Generation and implementation of Pseudorandom codes for Navigation System in FPGA

Size: px
Start display at page:

Download "Generation and implementation of Pseudorandom codes for Navigation System in FPGA"

Transcription

1 Generation and implementation of Pseudorandom codes for Navigation System in FPGA Akash B #1, Dileep D *2, Yashodha H #3 # Reva Institute of Technology & Management (RITM), Visvesvaraya Technological University(VTU) Rukmini Knowledge Park, Kattigenahalli,Yelahanka,Bangalore-64 * ISTRAC/ISRO #12&13,2 nd Phase, Peenya Industrial Area,Bangalore-58 Abstract Satellite Navigation system provides autonomous geo-spatial positioning with global coverage, collectively being called Global Navigation Satellite System (GNSS). Most of these systems work on the principle of code division multiple access (CDMA), in which Pseudo Random Code (PRN) sequences are heart of the whole system. In this paper a study is made on generation and properties of the PRN codes form Navigation system perspective. This paper also presents the design and implementation of PRN Code on Virtex-2P FPGA Hardware. The results of generation from hardware are validated with the simulation results and the properties of the PRN codes are analyzed. Keywords Multiple access, GNSS, PRN code, correlation, synthesis, ISE I. INTRODUCTION The Spread Spectrum communication involves the spreading of the signal spectrum to make it appear as noise-like signal. The signal will thus be hidden and any intentional jammer would not be able to detect it. The method usually employed for spreading the signal spectrum is to multiply it with spreading sequences. Some ways to spread the bandwidth of the signal: Frequency Hopping, Time Hopping, Direct sequence (DS), Hybrid system. Due to the LPI, AJ characteristics, the most popular SS are in fields where security is an important consideration. Also, multiple access enables many users to operate at the same time without much interference. The coded modulation characteristics uniquely qualify SS for navigation from the standpoints of both range measurements and direct fading. DS-SS is the most preferred for ranging. DSSS provides the structure for the transmission of ranging signals and essential navigation data, such as satellite ephemerides and satellite health. The ranging signals are PRN codes that binary phase shift key (BPSK) modulate the satellite carrier frequencies. These codes look like and have spectral properties similar to random binary sequences but are actually deterministic. A. Choice of Code: In BPSK transmission, bandwidth is a direct function of the code chip rate. Code repetition rate is simply given as R Rep =Clock rate(chips/sec)/code length (chips) (1) This repetition rate determines the line spacing in the RF output spectrum. Hence, it is an important consideration in a system design. Another important criterion is that the period of the code must be very large. Table I lists various code lengths for a 1-Mcps-chip rate. Other consideration should be that the choices of code rate and code length determine the relationship of the repetition rate to the information baseband and use of the system for ranging. The code used in a direct sequence system should be adjusted for repetition rate 78 Akash B, Dileep D, Yashodha H

2 and length such that noise does not pass into the demodulator especially under jammed conditions. A properly chosen code can not only improve resolution but also can ease range measurement problem. if the chip rate is chosen in such a way that an integral number of code offset can be used to measure range. Clock rates that are integral multiple of 161,875Hzproduce code at rates that are integrally related to the speed of propagation of RF signal. The relationship may be derived as follows: Speed of light in vacuum is c = x 10 8 m/s, 1 nautical mile = x 10 3 meter, The clock rate (wavelength = 1nmi) = c/r= x 10 8 /1.852 x 10 3 = 161,875 Hz Among the biggest problems in code generation are (1) finding feedback logic that gives desired code length and (2) checking the code one a sequence generator has been constructed to ensure that it is operating properly. Tables of feedback connections and irreducible polynomials have been generated. B. Popular Codes: 1) Maximal Length Sequence or PN Sequence: The pseudorandom noise (PN) sequence are a series of 1 s and 0 s which lack of any definite pattern and consists of a deterministic sequence of pulse that will repeat after its period. In a truly random sequence the bit pattern never repeats. A pseudo random binary sequence is a semi-random sequence in the sense that it appears random within the sequence length, fulfilling the needs of randomness, but the entire sequence repeats indefinitely. The heart of PN sequence generator is usually made up of linear feedback shift registers (LFSR). It generates a maximallength sequence of length N = 2n 1 elements. Because of their good autocorrelation two similar PN sequences can easily be phase synchronized, even when one of them is corrupted by noise. 2) Gold Sequence: Gold sequences are constructed by the XOR of a preferred pair of m-sequence with the same clocking. They have well defined cross correlation properties and only simple circuitry is needed to generate large number of unique codes. 3) Kasami Codes: Kasami codes have popular use in 3G wireless scheme. They can be classified as (1) large Kasami set or (2) small Kasami set. Small kasami set has family size (M) = 2 n/2 and period = N = 2 n -1. Their maxium cross-correlation is 2 n/2-1.large kasami set contains both gold sequence and small set of kasami sequences as subset.its period is N=2 n -1.Maximum cross-correlation is 2 (n+2)/2. II. PROPERTIES OF PN-SEQUENCE FOR NAVIGATION SYSTEM A PN sequence is a bit stream of 1 s and 0 s occurring randomly, with some unique properties. The sequence serves as a reference pattern with known random characteristics for the analysis, optimization and performance measurement of communication channels and systems. A. Balance Property In each period of a maximum length sequence, the number of 1s is always one more than the number of 0s. B. Autocorrelation Property: The autocorrelation function r(i) of any PN sequence of length N is given by r(i)= (2) C. Correlation Property: Correlation is a measure of similarity between two sequences. When the two sequences compared are different it is the cross correlation and when they are the same it is the autocorrelation. Mathematically, the correlation between two sequences x (k) and y (k) as a function of the time delay m is expressed as 79 Akash B, Dileep D, Yashodha H

3 (3) R(m) xy = The correlation equation for the digital bit sequence can thus be written as The proposed architecture for the PRN code generation for satellite based navigation is shown below. R (m) = total number of 1 s / total number of bits (4) These three properties make PN sequences efficient for speech encryption. However, particularly due to the third property, adjacent bits correlation becomes considerably less, thereby making the PN sequences more effective to be used in systems like CDMA. Therefore, useful PN sequences must have very good auto-correlation and cross-correlation properties as well as maintaining some randomness properties. Welch bound: Designing codes optimized for any of the potential application is practically impossible, using code centric metric is more appropriate. This is the reason why the Welch bound has gained importance in recent years as suitable metric for evaluating PRN codes. The Welch bound is the theoretical minimum of the maximum value of cross-correlation that can be obtained for a given code length L within a set of M codes [3]. The Welch bound for a set of K sequences with each sequence of length N (N K) is defined as (5) such a bound is no longer achievable when N > K(K+1)=2 for real cases. Note that, in the sequel, sometimes we shall represent binary sequences using zeros and ones and in other cases +1 s and -1 s. The appropriate mapping is that the zeros are mapped to +1 s and ones are mapped to -1 s. III. PROPOSED ARCHITECTURE FOR PRN CODE GENERATION Fig. 1 Block diagram for PRN code generation The GPS can be taken as an example for PRN code generation for satellite based navigation. The GPS signal for Standard Positioning Service (SPS) consists of the Navigational Data stream at 50bpsmixed with the C/A code, modulated using a carrier of MHz (L-band). The C/A has a chipping rate of 1.023MHz with a code period of 1.023ms. The bits obtained after spreading the data with the PN sequence is represented in NRZ format, which is then used for BPSK modulation of a sinusoidal carrier of MHz. So, the GPS-SPS signal for the ith satellite can be represented as (6) Where, A: The carrier amplitude Ci(t) : C/A code for the ith satellite Di(t) : Navigational data for the ith satellite ω c : L1 carrier with frequency of MHz Gold codes are constructed by taking the modulo-2 sum of two maximal length sequences of length 2n-1, although the two sequences are required to be related to one another in a particular way. An explanation for the theory of Gold codes is beyond the scope of this thesis, although an excellent summary may be found in the Appendix of (Spilker, 1996). 80 Akash B, Dileep D, Yashodha H

4 In the case of the C/A codes, the pair of maximal-length sequences are constructed using generating polynomials G1 and G2, where G1 and G2 are given by G1= 1+X3+X10 (7) G2= 1+X2+X3+X6+X8+X9+X10 (8) The Gold code is constructed as the modulo- 2 sum of the G1 sequence and a delayed version of the G2 sequence, with each satellite number allocated a different delay quantity. As there are 1025 different sequences in the family of codes,but only 513 codes are balanced codes where the number of 1s and 0s differ by 1, the assignment of codes to satellites is from the set of balanced codes. The G1 and G2 generators reset to all 1s after generation of 1023 pseudorandom binary chips. In the case of GPS, two different taps of the 10-bit G2 register are added thereby allowing a maximum of 45 different codes to be generated. Alternative approaches that are more widely used are to reset the G2 register to a specified initial value rather than all 1s, or to insert a programmable delay that delays the reset of G2 until a specified number of chips in the sequence have elapsed. The advantage of these methods is that not only do they permit all of the 1023 codes in the family to be generated, but they also offer a simpler implementation3. In particular, they also permit generation of the codes used by the WAAS and EGNOS satellite based augmentation systems (SBAS). All the 37 Satellite vehicles have different code phase assignments so as to generate the Pseudo random noise codes. From the generated PN sequence the various properties mentioned in Section III are performed and they are verified. The balanced property is verified for all the satellites. The Auto correlation values obtained for the generated PRN code is represented with the waveforms generated. The Cross Correlation is also generated and represented. They are verified with the welch bound condition given by {Cross Correlation maximum peak value} x {Code Length} Code Length (9) IV. SIMULATION RESULTS AND ANALYSIS The PRN codes generation and analysis has been done using Matlab and Xlinx ISE simulations. Both Matlab and verilog codes have been used for the PRN codegeneration. The results are shown in the following figures. Fig. 2 PRN code generation & its Autocorrelation The Fig. 2 shows the generation of 1023 chips of PRN code and its auto correlation. It is evident from the figure that, the autocorrelation peak is occurring at the exact chip rate. The Fig. 3 shows the generation of two 1023 chips of PRN codes and their cross-correlation. From the definition, PRN codes are not complete orthogonal, but are semi-orthogonal. This feature is clearly indicated in the crosscorrelation plot which shows multiple peaks throughout the chip range. The Fig. 4 shows the generation of PRN code in the Xilinx ISE 9.1 environment by using code written in verilog HDL. The first 10-bits 81 Akash B, Dileep D, Yashodha H

5 represented on octal form is used for validating the generated data. 2P development kit. The Fig 6 shows the PRN code generation in FPGA kit. From the synthesis report, it was found that, this design and implementation has utilized only 12 slices, 20 flip-flops, 4 LUTs, 24 bonded IOBs and 1 GCLK. The delay involved for generation of 1023 chips is around 1.779ns. Fig. 3 Two PRN codes generation & plot of their Cross-correlation Fig. 5 Xilinx Virtex-2P development kit Fig. 4 PRN codes generation using Xlinx ISE 9.1 environment V. HARDWARE IMPLEMENTATION RESULTS The Xilinx Virtex-2 pro development FPGA kit is used for PRN code generation in the hardware. The physical layout of the kit is represented in the Fig. 5. The push button switch provided enter key is utilized as the clock input. The clock was derived from the internal master clock. Out of four DIP switches, two were used as reset and read inputs. Out of four LEDs, LED-1 is used for the displaying generated PRN data. The necessary user constrain files(ucf) were available from the user manual of the VIrtex- Fig. 6 PRN code generation in Virtex-2P development kit VI. CONCLUSIONS In this paper a study on generation and properties of the PRN codes is completed. This paper presents the design and implementation of PRN Code on Matlab, Xilinx ISE and Virtex-2P FPGA Hardware environments. The results of generation from hardware are validated with the simulation results and also the properties of the PRN codes are analyzed. ACKNOWLEDGMENT 82 Akash B, Dileep D, Yashodha H

6 I would like to thank my parents for their immense blessings without which this would not have been possible. I also like to thank my teachers, colleagues and friends for their support. REFERENCES [1] James Bao-Yen Tsui, Fundamentals of Global Positioning System Receivers - A Software approach, Wiley Publications, USA, 2000J [2] A. V. Oppenheim and R. W. Schafer, Discrete-Time Signal Processing, Prentice- Hall, Englewood Cliffs, NJ, USA, [3] Haykin. S, Communication Systems. 4th Edition. New York: John Wiley and Sons, [4] ACEEE Int. J. on Communications, Vol. 03, No. 03, Nov 2012-Analysis and Simulation of Pseudo Ranging Noise codes for Geo-Stationary Satellites and its Doppler Effect [5] E. D. Kaplan, Editor, Understanding GPS principles and applications, Artech House Publishers, [6] K. Borre, D. Akos, N. Bertelsen, P. Rinder, and S. Jensen, A Software- Defined GPS and Galileo Receiver: A Single-Frequency Approach, Birkhäauser, Boston, Mass, USA, [7] B. W. Parkinson and J. J. Spilker, Global Positioning Systems: Theory and Applications, American Institute of Aeronautics and Astronautics, Washington, DC, USA, 1996 [8] Mr. Akash B has obtained his Bachelor s degree in Electronics & Communication from VTU in the year 2008 and is currently pursuing M.Tech in VLSI & Embedded Systems Design from VTU. Currently he is working as SR. TECHICAL ASSISTANT in ISTRAC/ISRO located in Bangalore. His areas of interests are Embedded Systems, Navigation and Multimedia systems. Mr. Dileep D has obtained his Bachelor s degree in Electronics & Communication from VTU in the year 2007 and also M.Tech in Digital Electronics from VTU. Currently he is working as SCIENTIST in ISTRAC/ISRO located in Bangalore. His areas of interest are Navigation, Cryptography, Chaos Theory and Digital Signal Processing. Ms. Yashodha H has obtained her Bachelor s degree Electronics & Communication from Dharwad university and her M.E degree in Power Electronics from Bangalore university. Currently she is working as ASSISTANT PROFESSOR in Reva Institute of Technology & Management, Bangalore. Her area of interests are Power electronics, Medical Electronics and Embedded Systems.. 83 Akash B, Dileep D, Yashodha H

SPS Gold Code Generation and Implementation for IRNSS User Receiver

SPS Gold Code Generation and Implementation for IRNSS User Receiver RESEARCH ARTICLE OPEN ACCESS SPS Gold Code Generation and Implementation for IRNSS User Receiver Shachi Varku 1, Swetha A 2, Sharanya S Konandur 3, Dileep D 4, Aklpita L Kulkarni 5 1,2,3,5 (Department

More information

Performance Analysis of DSSS and FHSS Techniques over AWGN Channel

Performance Analysis of DSSS and FHSS Techniques over AWGN Channel Performance Analysis of DSSS and FHSS Techniques over AWGN Channel M. Katta Swamy, M.Deepthi, V.Mounika, R.N.Saranya Vignana Bharathi Institute of Technology, Hyderabad, and Andhra Pradesh, India. Corresponding

More information

Cross Spectral Density Analysis for Various Codes Suitable for Spread Spectrum under AWGN conditions with Error Detecting Code

Cross Spectral Density Analysis for Various Codes Suitable for Spread Spectrum under AWGN conditions with Error Detecting Code Cross Spectral Density Analysis for Various Codes Suitable for Spread Spectrum under AWG conditions with Error Detecting Code CH.ISHATHI 1, R.SUDAR RAJA 2 Department of Electronics and Communication Engineering,

More information

SPREADING CODES PERFORMANCE FOR CORRELATION FUNCTION USING MATLAB

SPREADING CODES PERFORMANCE FOR CORRELATION FUNCTION USING MATLAB International Journal of Electronics, Communication & Instrumentation Engineering Research and Development (IJECIERD) ISSN 2249-684X Vol. 3, Issue 2, Jun 2013, 15-24 TJPRC Pvt. Ltd. SPREADING CODES PERFORMANCE

More information

Code Division Multiple Access.

Code Division Multiple Access. Code Division Multiple Access Mobile telephony, using the concept of cellular architecture, are built based on GSM (Global System for Mobile communication) and IS-95(Intermediate Standard-95). CDMA allows

More information

Spread Spectrum. Chapter 18. FHSS Frequency Hopping Spread Spectrum DSSS Direct Sequence Spread Spectrum DSSS using CDMA Code Division Multiple Access

Spread Spectrum. Chapter 18. FHSS Frequency Hopping Spread Spectrum DSSS Direct Sequence Spread Spectrum DSSS using CDMA Code Division Multiple Access Spread Spectrum Chapter 18 FHSS Frequency Hopping Spread Spectrum DSSS Direct Sequence Spread Spectrum DSSS using CDMA Code Division Multiple Access Single Carrier The traditional way Transmitted signal

More information

GPS Signal Generation for L 1 Frequency using Model Based Design Tools

GPS Signal Generation for L 1 Frequency using Model Based Design Tools GPS Signal Generation for L 1 Frequency using Model Based Design Tools Kota Solomon Raju 1, Y.Pratap 1, 2, Virendra Patel 1, 2, S.M.M Naidu 2, Amit Patwardhan 2, and P.Bhanu Prasad 1 Central Electronics

More information

Spread Spectrum: Definition

Spread Spectrum: Definition Spread Spectrum: Definition refers to the expansion of signal bandwidth, by several orders of magnitude in some cases, which occurs when a key is attached to the communication channel an RF communications

More information

CHAPTER 2. Instructor: Mr. Abhijit Parmar Course: Mobile Computing and Wireless Communication ( )

CHAPTER 2. Instructor: Mr. Abhijit Parmar Course: Mobile Computing and Wireless Communication ( ) CHAPTER 2 Instructor: Mr. Abhijit Parmar Course: Mobile Computing and Wireless Communication (2170710) Syllabus Chapter-2.4 Spread Spectrum Spread Spectrum SS was developed initially for military and intelligence

More information

Introduction to Global Navigation Satellite System (GNSS) Signal Structure

Introduction to Global Navigation Satellite System (GNSS) Signal Structure Introduction to Global Navigation Satellite System (GNSS) Signal Structure Dinesh Manandhar Center for Spatial Information Science The University of Tokyo Contact Information: dinesh@iis.u-tokyo.ac.jp

More information

Single Chip FPGA Based Realization of Arbitrary Waveform Generator using Rademacher and Walsh Functions

Single Chip FPGA Based Realization of Arbitrary Waveform Generator using Rademacher and Walsh Functions IEEE ICET 26 2 nd International Conference on Emerging Technologies Peshawar, Pakistan 3-4 November 26 Single Chip FPGA Based Realization of Arbitrary Waveform Generator using Rademacher and Walsh Functions

More information

Generation of Orthogonal Logistic Map Sequences for Application in Wireless Channel and Implementation using a Multiplierless Technique

Generation of Orthogonal Logistic Map Sequences for Application in Wireless Channel and Implementation using a Multiplierless Technique Generation of Orthogonal Logistic Map Sequences for Application in Wireless Channel and Implementation using a Multiplierless Technique KATYAYANI KASHYAP 1, MANASH PRATIM SARMA 1, KANDARPA KUMAR SARMA

More information

Noise Effective Code Analysis on the Basis of Correlation in CDMA Technology

Noise Effective Code Analysis on the Basis of Correlation in CDMA Technology Manarat International University Studies, 2 (1): 183-191, December 2011 ISSN 1815-6754 @ Manarat International University, 2011 Noise Effective Code Analysis on the Basis of Correlation in CDMA Technology

More information

Implementation of DSSS System using Chaotic Sequence using MATLAB and VHDL

Implementation of DSSS System using Chaotic Sequence using MATLAB and VHDL Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology IJCSMC, Vol. 4, Issue. 5, May 2015, pg.598

More information

Satellite Telemetry Data Transmission Immunity from the ASI and Jamming Using DSSS Optimized PN Codes in DS-CDMA Systems

Satellite Telemetry Data Transmission Immunity from the ASI and Jamming Using DSSS Optimized PN Codes in DS-CDMA Systems IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 12, Issue 1, Ver. II (Jan.-Feb. 2017), PP 01-12 www.iosrjournals.org Satellite Telemetry

More information

Lecture 3. Direct Sequence Spread Spectrum Systems. COMM 907:Spread Spectrum Communications

Lecture 3. Direct Sequence Spread Spectrum Systems. COMM 907:Spread Spectrum Communications COMM 907: Spread Spectrum Communications Lecture 3 Direct Sequence Spread Spectrum Systems Performance of DSSSS with BPSK Modulation in presence of Interference (Jamming) Broadband Interference (Jamming):

More information

Spread Spectrum Signal for Digital Communications

Spread Spectrum Signal for Digital Communications Wireless Information Transmission System Lab. Spread Spectrum Signal for Digital Communications Institute of Communications Engineering National Sun Yat-sen University Multiple Access Schemes Table of

More information

High Speed & High Frequency based Digital Up/Down Converter for WCDMA System

High Speed & High Frequency based Digital Up/Down Converter for WCDMA System High Speed & High Frequency based Digital Up/Down Converter for WCDMA System Arun Raj S.R Department of Electronics & Communication Engineering University B.D.T College of Engineering Davangere-Karnataka,

More information

PERFORMANCE ASSESSMENT OF MAXIMUM LIKELIHOOD IN THE DETECTION OF CARRIER INTERFERENCE CORRUPTED GPS DATA IN MOBILE HANDSETS

PERFORMANCE ASSESSMENT OF MAXIMUM LIKELIHOOD IN THE DETECTION OF CARRIER INTERFERENCE CORRUPTED GPS DATA IN MOBILE HANDSETS PERFORMANCE ASSESSMENT OF MAXIMUM LIKELIHOOD IN THE DETECTION OF CARRIER INTERFERENCE CORRUPTED GPS DATA IN MOBILE HANDSETS Taher AlSharabati Electronics and Communications Engineering Department, Al-Ahliyya

More information

Spread Spectrum Techniques

Spread Spectrum Techniques 0 Spread Spectrum Techniques Contents 1 1. Overview 2. Pseudonoise Sequences 3. Direct Sequence Spread Spectrum Systems 4. Frequency Hopping Systems 5. Synchronization 6. Applications 2 1. Overview Basic

More information

Spreading Codes and Characteristics. Error Correction Codes

Spreading Codes and Characteristics. Error Correction Codes Spreading Codes and Characteristics and Error Correction Codes Global Navigational Satellite Systems (GNSS-6) Short course, NERTU Prasad Krishnan International Institute of Information Technology, Hyderabad

More information

Review on Design and Implementation of DSSS-CDMA Transmitter using HDL with Raised Cosine Filter to Minimize ISI

Review on Design and Implementation of DSSS-CDMA Transmitter using HDL with Raised Cosine Filter to Minimize ISI Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology IJCSMC, Vol. 3, Issue. 3, March 2014,

More information

FPGA Implementation of Digital Modulation Techniques BPSK and QPSK using HDL Verilog

FPGA Implementation of Digital Modulation Techniques BPSK and QPSK using HDL Verilog FPGA Implementation of Digital Techniques BPSK and QPSK using HDL Verilog Neeta Tanawade P. G. Department M.B.E.S. College of Engineering, Ambajogai, India Sagun Sudhansu P. G. Department M.B.E.S. College

More information

PERFORMANCE AND COMPARISON OF LINEAR MULTIUSER DETECTORS IN DS-CDMA USING CHAOTIC SEQUENCE

PERFORMANCE AND COMPARISON OF LINEAR MULTIUSER DETECTORS IN DS-CDMA USING CHAOTIC SEQUENCE PERFORMANCE AND COMPARISON OF LINEAR MULTIUSER DETECTORS IN DS-CDMA USING CHAOTIC SEQUENCE D.Swathi 1 B.Alekhya 2 J.Ravindra Babu 3 ABSTRACT Digital communication offers so many advantages over analog

More information

Pseudo Noise Sequence Generation using Elliptic Curve for CDMA and Security Application

Pseudo Noise Sequence Generation using Elliptic Curve for CDMA and Security Application IJIRST International Journal for Innovative Research in Science & Technology Volume 1 Issue 11 April 2015 ISSN (online): 2349-6010 Pseudo Noise Sequence Generation using Elliptic Curve for CDMA and Security

More information

Comparative Analysis of the BER Performance of WCDMA Using Different Spreading Code Generator

Comparative Analysis of the BER Performance of WCDMA Using Different Spreading Code Generator Science Journal of Circuits, Systems and Signal Processing 2016; 5(2): 19-23 http://www.sciencepublishinggroup.com/j/cssp doi: 10.11648/j.cssp.20160502.12 ISSN: 2326-9065 (Print); ISSN: 2326-9073 (Online)

More information

Lecture 9: Spread Spectrum Modulation Techniques

Lecture 9: Spread Spectrum Modulation Techniques Lecture 9: Spread Spectrum Modulation Techniques Spread spectrum (SS) modulation techniques employ a transmission bandwidth which is several orders of magnitude greater than the minimum required bandwidth

More information

An Improved VLSI Architecture Using Galois Sequence for High Speed DSSS Signal Acquisition at Low SNR

An Improved VLSI Architecture Using Galois Sequence for High Speed DSSS Signal Acquisition at Low SNR International Journal of Engineering Inventions ISSN: 2278-7461, www.ijeijournal.com Volume 1, Issue 9 (November2012) PP: 42-48 An Improved VLSI Architecture Using Galois Sequence for High Speed DSSS Signal

More information

ECE 5325/6325: Wireless Communication Systems Lecture Notes, Spring 2013

ECE 5325/6325: Wireless Communication Systems Lecture Notes, Spring 2013 ECE 5325/6325: Wireless Communication Systems Lecture Notes, Spring 2013 Lecture 17 Today: Spread Spectrum: (1) Frequency Hopping, (2) Direct Sequence Reading: Today Molisch 18.1, 18.2. Thu: MUSE Channel

More information

ECS455: Chapter 4 Multiple Access

ECS455: Chapter 4 Multiple Access ECS455: Chapter 4 Multiple Access 4.4 DS/SS 1 Dr.Prapun Suksompong prapun.com/ecs455 Office Hours: BKD 3601-7 Wednesday 15:30-16:30 Friday 9:30-10:30 Spread spectrum (SS) Historically spread spectrum was

More information

Part A: Spread Spectrum Systems

Part A: Spread Spectrum Systems 1 Telecommunication Systems and Applications (TL - 424) Part A: Spread Spectrum Systems Dr. ir. Muhammad Nasir KHAN Department of Electrical Engineering Swedish College of Engineering and Technology March

More information

CH 5. Air Interface of the IS-95A CDMA System

CH 5. Air Interface of the IS-95A CDMA System CH 5. Air Interface of the IS-95A CDMA System 1 Contents Summary of IS-95A Physical Layer Parameters Forward Link Structure Pilot, Sync, Paging, and Traffic Channels Channel Coding, Interleaving, Data

More information

QUESTION BANK SUBJECT: DIGITAL COMMUNICATION (15EC61)

QUESTION BANK SUBJECT: DIGITAL COMMUNICATION (15EC61) QUESTION BANK SUBJECT: DIGITAL COMMUNICATION (15EC61) Module 1 1. Explain Digital communication system with a neat block diagram. 2. What are the differences between digital and analog communication systems?

More information

CDMA Mobile Radio Networks

CDMA Mobile Radio Networks - 1 - CDMA Mobile Radio Networks Elvino S. Sousa Department of Electrical and Computer Engineering University of Toronto Canada ECE1543S - Spring 1999 - 2 - CONTENTS Basic principle of direct sequence

More information

Performance Comparison of Spreading Codes in Linear Multi- User Detectors for DS-CDMA System

Performance Comparison of Spreading Codes in Linear Multi- User Detectors for DS-CDMA System Performance Comparison of Spreading Codes in Linear Multi- User Detectors for DS-CDMA System *J.RAVINDRABABU, **E.V.KRISHNA RAO E.C.E Department * P.V.P. Siddhartha Institute of Technology, ** Andhra Loyola

More information

Hardware/Software Co-Simulation of BPSK Modulator and Demodulator using Xilinx System Generator

Hardware/Software Co-Simulation of BPSK Modulator and Demodulator using Xilinx System Generator www.semargroups.org, www.ijsetr.com ISSN 2319-8885 Vol.02,Issue.10, September-2013, Pages:984-988 Hardware/Software Co-Simulation of BPSK Modulator and Demodulator using Xilinx System Generator MISS ANGEL

More information

Optimal Pulsing Schemes for Galileo Pseudolite Signals

Optimal Pulsing Schemes for Galileo Pseudolite Signals Journal of Global Positioning Systems (27) Vol.6, No.2: 133-141 Optimal Pulsing Schemes for Galileo Pseudolite Signals Tin Lian Abt, Francis Soualle and Sven Martin EADS Astrium, Germany Abstract. Galileo,

More information

CDMA Technology : Pr. S. Flament Pr. Dr. W. Skupin On line Course on CDMA Technology

CDMA Technology : Pr. S. Flament  Pr. Dr. W. Skupin  On line Course on CDMA Technology CDMA Technology : Pr. Dr. W. Skupin www.htwg-konstanz.de Pr. S. Flament www.greyc.fr/user/99 On line Course on CDMA Technology CDMA Technology : Introduction to Spread Spectrum Technology CDMA / DS : Principle

More information

PERFORMANCE EVALUATION OF DIRECT SEQUENCE SPREAD SPECTRUM UNDER PHASE NOISE EFFECT WITH SIMULINK SIMULATIONS

PERFORMANCE EVALUATION OF DIRECT SEQUENCE SPREAD SPECTRUM UNDER PHASE NOISE EFFECT WITH SIMULINK SIMULATIONS PERFORMANCE EVALUATION OF DIRECT SEQUENCE SPREAD SPECTRUM UNDER PHASE NOISE EFFECT WITH SIMULINK SIMULATIONS Rupender Singh 1, Dr. S.K. Soni 2 1,2 Department of Electronics & Communication Engineering,

More information

Prof. P. Subbarao 1, Veeravalli Balaji 2

Prof. P. Subbarao 1, Veeravalli Balaji 2 Performance Analysis of Multicarrier DS-CDMA System Using BPSK Modulation Prof. P. Subbarao 1, Veeravalli Balaji 2 1 MSc (Engg), FIETE, MISTE, Department of ECE, S.R.K.R Engineering College, A.P, India

More information

GNSS Technologies. GNSS Acquisition Dr. Zahidul Bhuiyan Finnish Geospatial Research Institute, National Land Survey

GNSS Technologies. GNSS Acquisition Dr. Zahidul Bhuiyan Finnish Geospatial Research Institute, National Land Survey GNSS Acquisition 25.1.2016 Dr. Zahidul Bhuiyan Finnish Geospatial Research Institute, National Land Survey Content GNSS signal background Binary phase shift keying (BPSK) modulation Binary offset carrier

More information

Spread Spectrum (SS) is a means of transmission in which the signal occupies a

Spread Spectrum (SS) is a means of transmission in which the signal occupies a SPREAD-SPECTRUM SPECTRUM TECHNIQUES: A BRIEF OVERVIEW SS: AN OVERVIEW Spread Spectrum (SS) is a means of transmission in which the signal occupies a bandwidth in excess of the minimum necessary to send

More information

A Simulation of Wideband CDMA System on Digital Up/Down Converters

A Simulation of Wideband CDMA System on Digital Up/Down Converters Scientific Journal Impact Factor (SJIF): 1.711 e-issn: 2349-9745 p-issn: 2393-8161 International Journal of Modern Trends in Engineering and Research www.ijmter.com A Simulation of Wideband CDMA System

More information

Implementation of A Low Power Low Complexity VLSI Architecture for DSSS Signal Transmission and Reception.

Implementation of A Low Power Low Complexity VLSI Architecture for DSSS Signal Transmission and Reception. IOSR Journal of VLSI and Signal Processing (IOSR-JVSP) ISSN: 2319 4200, ISBN No. : 2319 4197 Volume 1, Issue 2 (Sep-Oct. 2012), PP 21-29 Implementation of A Low Power Low Complexity VLSI Architecture for

More information

BPSK_DEMOD. Binary-PSK Demodulator Rev Key Design Features. Block Diagram. Applications. General Description. Generic Parameters

BPSK_DEMOD. Binary-PSK Demodulator Rev Key Design Features. Block Diagram. Applications. General Description. Generic Parameters Key Design Features Block Diagram Synthesizable, technology independent VHDL IP Core reset 16-bit signed input data samples Automatic carrier acquisition with no complex setup required User specified design

More information

CH 4. Air Interface of the IS-95A CDMA System

CH 4. Air Interface of the IS-95A CDMA System CH 4. Air Interface of the IS-95A CDMA System 1 Contents Summary of IS-95A Physical Layer Parameters Forward Link Structure Pilot, Sync, Paging, and Traffic Channels Channel Coding, Interleaving, Data

More information

Performance of Wideband Mobile Channel with Perfect Synchronism BPSK vs QPSK DS-CDMA

Performance of Wideband Mobile Channel with Perfect Synchronism BPSK vs QPSK DS-CDMA Performance of Wideband Mobile Channel with Perfect Synchronism BPSK vs QPSK DS-CDMA By Hamed D. AlSharari College of Engineering, Aljouf University, Sakaka, Aljouf 2014, Kingdom of Saudi Arabia, hamed_100@hotmail.com

More information

SPREAD SPECTRUM (SS) SIGNALS FOR DIGITAL COMMUNICATIONS

SPREAD SPECTRUM (SS) SIGNALS FOR DIGITAL COMMUNICATIONS Dr. Ali Muqaibel SPREAD SPECTRUM (SS) SIGNALS FOR DIGITAL COMMUNICATIONS VERSION 1.1 Dr. Ali Hussein Muqaibel 1 Introduction Narrow band signal (data) In Spread Spectrum, the bandwidth W is much greater

More information

COMPARATIVE ANALYSIS OF PEAK CORRELATION CHARACTERISTICS OF NON-ORTHOGONAL SPREADING CODES FOR WIRELESS SYSTEMS

COMPARATIVE ANALYSIS OF PEAK CORRELATION CHARACTERISTICS OF NON-ORTHOGONAL SPREADING CODES FOR WIRELESS SYSTEMS International Journal of Distributed and Parallel Systems (IJDPS) Vol.3, No.3, May 212 COMPARATIVE ANALYSIS OF PEAK CORRELATION CHARACTERISTICS OF NON-ORTHOGONAL SPREADING CODES FOR WIRELESS SYSTEMS Dr.

More information

FPGA Implementation of PAPR Reduction Technique using Polar Clipping

FPGA Implementation of PAPR Reduction Technique using Polar Clipping International Journal of Engineering Inventions e-issn: 2278-7461, p-issn: 2319-6491 Volume 2, Issue 11 (July 2013) PP: 16-20 FPGA Implementation of PAPR Reduction Technique using Polar Clipping Kiran

More information

ITT Technical Institute. ET3330 Telecommunications Systems and Technology Onsite Course SYLLABUS

ITT Technical Institute. ET3330 Telecommunications Systems and Technology Onsite Course SYLLABUS ITT Technical Institute ET3330 Telecommunications Systems and Technology Onsite Course SYLLABUS Credit hours: 4.5 Contact/Instructional hours: 56 (34 Theory Hours, 22 Lab Hours) Prerequisite(s) and/or

More information

Pseudo Chaotic Sequence Generator based DS-SS Communication System using FPGA

Pseudo Chaotic Sequence Generator based DS-SS Communication System using FPGA RESEARCH ARTICLE OPEN ACCESS Pseudo Chaotic Sequence Generator based DS-SS Communication System using FPGA Amit Tripathi1,Abhishek Zade2,Rohit Himte3 Department of Electronics Engineering, Yashwantrao

More information

SC - Single carrier systems One carrier carries data stream

SC - Single carrier systems One carrier carries data stream Digital modulation SC - Single carrier systems One carrier carries data stream MC - Multi-carrier systems Many carriers are used for data transmission. Data stream is divided into sub-streams and each

More information

Acquisition and Tracking of IRNSS Receiver on MATLAB and Xilinx

Acquisition and Tracking of IRNSS Receiver on MATLAB and Xilinx Acquisition and Tracking of IRNSS Receiver on MATLAB and Xilinx Kishan Y. Rathod 1, Dr. Rajendra D. Patel 2, Amit Chorasiya 3 1 M.E Student / Marwadi Education Foundation s Groups of Institute 2 Accociat

More information

High Data Rate QPSK Modulator with CCSDS Punctured FEC channel Coding for Geo-Imaging Satellite

High Data Rate QPSK Modulator with CCSDS Punctured FEC channel Coding for Geo-Imaging Satellite International Journal of Advances in Engineering Science and Technology 01 www.sestindia.org/volume-ijaest/ and www.ijaestonline.com ISSN: 2319-1120 High Data Rate QPSK Modulator with CCSDS Punctured FEC

More information

COMMUNICATION SYSTEMS

COMMUNICATION SYSTEMS COMMUNICATION SYSTEMS 4TH EDITION Simon Hayhin McMaster University JOHN WILEY & SONS, INC. Ш.! [ BACKGROUND AND PREVIEW 1. The Communication Process 1 2. Primary Communication Resources 3 3. Sources of

More information

Chaos based Communication System Using Reed Solomon (RS) Coding for AWGN & Rayleigh Fading Channels

Chaos based Communication System Using Reed Solomon (RS) Coding for AWGN & Rayleigh Fading Channels 2015 IJSRSET Volume 1 Issue 1 Print ISSN : 2395-1990 Online ISSN : 2394-4099 Themed Section: Engineering and Technology Chaos based Communication System Using Reed Solomon (RS) Coding for AWGN & Rayleigh

More information

BPSK Modulation and Demodulation Scheme on Spartan-3 FPGA

BPSK Modulation and Demodulation Scheme on Spartan-3 FPGA BPSK Modulation and Demodulation Scheme on Spartan-3 FPGA Mr. Pratik A. Bhore 1, Miss. Mamta Sarde 2 pbhore3@gmail.com1, mmsarde@gmail.com2 Department of Electronics & Communication Engineering Abha Gaikwad-Patil

More information

Laboratory 5: Spread Spectrum Communications

Laboratory 5: Spread Spectrum Communications Laboratory 5: Spread Spectrum Communications Cory J. Prust, Ph.D. Electrical Engineering and Computer Science Department Milwaukee School of Engineering Last Update: 19 September 2018 Contents 0 Laboratory

More information

Mobile & Wireless Networking. Lecture 2: Wireless Transmission (2/2)

Mobile & Wireless Networking. Lecture 2: Wireless Transmission (2/2) 192620010 Mobile & Wireless Networking Lecture 2: Wireless Transmission (2/2) [Schiller, Section 2.6 & 2.7] [Reader Part 1: OFDM: An architecture for the fourth generation] Geert Heijenk Outline of Lecture

More information

Optimized BPSK and QAM Techniques for OFDM Systems

Optimized BPSK and QAM Techniques for OFDM Systems I J C T A, 9(6), 2016, pp. 2759-2766 International Science Press ISSN: 0974-5572 Optimized BPSK and QAM Techniques for OFDM Systems Manikandan J.* and M. Manikandan** ABSTRACT A modulation is a process

More information

Digital Image Watermarking by Spread Spectrum method

Digital Image Watermarking by Spread Spectrum method Digital Image Watermarking by Spread Spectrum method Andreja Samčovi ović Faculty of Transport and Traffic Engineering University of Belgrade, Serbia Belgrade, november 2014. I Spread Spectrum Techniques

More information

Lecture 2. Mobile Evolution Introduction to Spread Spectrum Systems. COMM 907:Spread Spectrum Communications

Lecture 2. Mobile Evolution Introduction to Spread Spectrum Systems. COMM 907:Spread Spectrum Communications COMM 907: Spread Spectrum Communications Lecture 2 Mobile Evolution Introduction to Spread Spectrum Systems Evolution of Mobile Telecommunications Evolution of Mobile Telecommunications Evolution of Mobile

More information

Design of Spread-Spectrum Communication System Based on FPGA

Design of Spread-Spectrum Communication System Based on FPGA Sensors & Transducers 203 by IFSA http://www.sensorsportal.com Design of Spread-Spectrum Communication System Based on FPGA Yixin Yan, Xiaolei Liu, 2* Xiaobing Zhang College Measurement Control Technology

More information

Performance Analysis Of Multi Carrier CDMA System

Performance Analysis Of Multi Carrier CDMA System IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735. PP 12-18 www.iosrjournals.org Darshini. R 1, Dhanalakshmi. V 2, P. Velavan 3, R. Mirunalini 4

More information

Satellite Navigation Principle and performance of GPS receivers

Satellite Navigation Principle and performance of GPS receivers Satellite Navigation Principle and performance of GPS receivers AE4E08 GPS Block IIF satellite Boeing North America Christian Tiberius Course 2010 2011, lecture 3 Today s topics Introduction basic idea

More information

J. Electrical Systems 13-3 (2017): Regular paper. An efficient digital signal processing method for RRNS-based DS-CDMA systems

J. Electrical Systems 13-3 (2017): Regular paper. An efficient digital signal processing method for RRNS-based DS-CDMA systems Peter Olsovsky 1,*, Peter Podhoransky 1 J. Electrical Systems 13-3 (2017): 606-617 Regular paper An efficient digital signal processing method for RRNS-based DS-CDMA systems JES Journal of Electrical Systems

More information

BPSK System on Spartan 3E FPGA

BPSK System on Spartan 3E FPGA INTERNATIONAL JOURNAL OF INNOVATIVE TECHNOLOGIES, VOL. 02, ISSUE 02, FEB 2014 ISSN 2321 8665 BPSK System on Spartan 3E FPGA MICHAL JON 1 M.S. California university, Email:santhoshini33@gmail.com. ABSTRACT-

More information

AD9361 transceiver IC are explored. The signal properties are tested on spectrum analyzer. Index Terms: DS-SS, CDMA, Gold code, SOC.

AD9361 transceiver IC are explored. The signal properties are tested on spectrum analyzer. Index Terms: DS-SS, CDMA, Gold code, SOC. COMPACT IMPLEMENTATION OF DSSS WAVEFORM USING XILINX ZYNQ SOC AND AD9361 TRANSCEIVER Sharvani Gadgil 1, Atul Pawar 2, C D Naidu 3, M Haritha 4 1,3,4 VNR Vignana Jyothi Institute of Engineering and Technology,

More information

Analysis of Processing Parameters of GPS Signal Acquisition Scheme

Analysis of Processing Parameters of GPS Signal Acquisition Scheme Analysis of Processing Parameters of GPS Signal Acquisition Scheme Prof. Vrushali Bhatt, Nithin Krishnan Department of Electronics and Telecommunication Thakur College of Engineering and Technology Mumbai-400101,

More information

TIMA Lab. Research Reports

TIMA Lab. Research Reports ISSN 292-862 TIMA Lab. Research Reports TIMA Laboratory, 46 avenue Félix Viallet, 38 Grenoble France ON-CHIP TESTING OF LINEAR TIME INVARIANT SYSTEMS USING MAXIMUM-LENGTH SEQUENCES Libor Rufer, Emmanuel

More information

Evaluation of C/N 0 estimators performance for GNSS receivers

Evaluation of C/N 0 estimators performance for GNSS receivers International Conference and Exhibition The 14th IAIN Congress 2012 Seamless Navigation (Challenges & Opportunities) 01-03 October, 2012 - Cairo, Egypt Concorde EL Salam Hotel Evaluation of C/N 0 estimators

More information

Multiple Access Schemes

Multiple Access Schemes Multiple Access Schemes Dr Yousef Dama Faculty of Engineering and Information Technology An-Najah National University 2016-2017 Why Multiple access schemes Multiple access schemes are used to allow many

More information

The Influence of Multipath on the Positioning Error

The Influence of Multipath on the Positioning Error The Influence of Multipath on the Positioning Error Andreas Lehner German Aerospace Center Münchnerstraße 20 D-82230 Weßling, Germany andreas.lehner@dlr.de Co-Authors: Alexander Steingaß, German Aerospace

More information

CONVOLUTIONAL CODED GENERALIZED DIRECT SEQUENCE SPREAD SPECTRUM

CONVOLUTIONAL CODED GENERALIZED DIRECT SEQUENCE SPREAD SPECTRUM CONVOLUTIONAL CODED GENERALIZED DIRECT SEQUENCE SPREAD SPECTRUM 1 VISHAL J. PATEL, 2 MITESH D. PATEL 1, PG Student, E.C. Department KIT&RC, Kalol, Gujarat, India 2, Associate Professor, E.C. Department

More information

BER Calculation of DS-CDMA over Communication Channels

BER Calculation of DS-CDMA over Communication Channels BER Calculation of DS-CDMA over Communication Channels Dr. Saroj Choudhary A, Purneshwari Varshney B A Associate Professor, Department of Applied Science, Jodhpur National University, Jodhpur, Rajasthan,

More information

Multiple Access Techniques

Multiple Access Techniques Multiple Access Techniques EE 442 Spring Semester Lecture 13 Multiple Access is the use of multiplexing techniques to provide communication service to multiple users over a single channel. It allows for

More information

Part 3. Multiple Access Methods. p. 1 ELEC6040 Mobile Radio Communications, Dept. of E.E.E., HKU

Part 3. Multiple Access Methods. p. 1 ELEC6040 Mobile Radio Communications, Dept. of E.E.E., HKU Part 3. Multiple Access Methods p. 1 ELEC6040 Mobile Radio Communications, Dept. of E.E.E., HKU Review of Multiple Access Methods Aim of multiple access To simultaneously support communications between

More information

Part A: Spread Spectrum Systems

Part A: Spread Spectrum Systems 1 Telecommunication Systems and Applications (TL - 424) Part A: Spread Spectrum Systems Dr. ir. Muhammad Nasir KHAN Department of Electrical Engineering Swedish College of Engineering and Technology February

More information

FPGA-based GNSS Search Engine using Parallel Techniques in the Time-Domain

FPGA-based GNSS Search Engine using Parallel Techniques in the Time-Domain International Global Navigation Satellite Systems Society IGNSS Symposium 2009 Holiday Inn Surfers Paradise, Qld, Australia 1 3 December, 2009 FPGA-based GNSS Search Engine using Parallel Techniques in

More information

Multiple Access Techniques for Wireless Communications

Multiple Access Techniques for Wireless Communications Multiple Access Techniques for Wireless Communications Contents 1. Frequency Division Multiple Access (FDMA) 2. Time Division Multiple Access (TDMA) 3. Code Division Multiple Access (CDMA) 4. Space Division

More information

VLSI Implementation of Digital Down Converter (DDC)

VLSI Implementation of Digital Down Converter (DDC) Volume-7, Issue-1, January-February 2017 International Journal of Engineering and Management Research Page Number: 218-222 VLSI Implementation of Digital Down Converter (DDC) Shaik Afrojanasima 1, K Vijaya

More information

CDMA Principle and Measurement

CDMA Principle and Measurement CDMA Principle and Measurement Concepts of CDMA CDMA Key Technologies CDMA Air Interface CDMA Measurement Basic Agilent Restricted Page 1 Cellular Access Methods Power Time Power Time FDMA Frequency Power

More information

Spread Spectrum Basics Spreading Codes IS-95 Features- Transmitter/Receiver Power Control Diversity Techniques RAKE Receiver Soft Handoff

Spread Spectrum Basics Spreading Codes IS-95 Features- Transmitter/Receiver Power Control Diversity Techniques RAKE Receiver Soft Handoff CDMA Mobile Communication & IS-95 1 Outline Spread Spectrum Basics Spreading Codes IS-95 Features- Transmitter/Receiver Power Control Diversity Techniques RAKE Receiver Soft Handoff 2 Spread Spectrum A

More information

Chapter 2 Overview - 1 -

Chapter 2 Overview - 1 - Chapter 2 Overview Part 1 (last week) Digital Transmission System Frequencies, Spectrum Allocation Radio Propagation and Radio Channels Part 2 (today) Modulation, Coding, Error Correction Part 3 (next

More information

WCDMA Basics Chapter 2 OBJECTIVES:

WCDMA Basics Chapter 2 OBJECTIVES: WCDMA Basics Chapter 2 This chapter is designed to give the students a brief review of the WCDMA basics of the WCDMA Experimental System. This is meant as a review only as the WCDMA basics have already

More information

Chapter 2 Overview - 1 -

Chapter 2 Overview - 1 - Chapter 2 Overview Part 1 (last week) Digital Transmission System Frequencies, Spectrum Allocation Radio Propagation and Radio Channels Part 2 (today) Modulation, Coding, Error Correction Part 3 (next

More information

FPGA Based Signal Security Using FHSS

FPGA Based Signal Security Using FHSS FPGA Based Signal Security Using FHSS Pralay Shende, Nilay Neve, Faizan Momin, Rutuja Deshmukh SavitribaiPhule Pune University. Abstract: Security of the data, information is the major topic of concern

More information

Study and Analysis on Binary Offset Carrier (BOC) Modulation in Satellite Navigation Systems

Study and Analysis on Binary Offset Carrier (BOC) Modulation in Satellite Navigation Systems IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 11, Issue 5, Ver. I (Sep.-Oct.2016), PP 115-123 www.iosrjournals.org Study and Analysis

More information

Satellite-based positioning (II)

Satellite-based positioning (II) Lecture 11: TLT 5606 Spread Spectrum techniques Lecturer: Simona Lohan Satellite-based positioning (II) Outline GNSS navigation signals&spectra: description and details Basics: signal model, pilots, PRN

More information

Channelization and Frequency Tuning using FPGA for UMTS Baseband Application

Channelization and Frequency Tuning using FPGA for UMTS Baseband Application Channelization and Frequency Tuning using FPGA for UMTS Baseband Application Prof. Mahesh M.Gadag Communication Engineering, S. D. M. College of Engineering & Technology, Dharwad, Karnataka, India Mr.

More information

Adaptive Antenna Array Processing for GPS Receivers

Adaptive Antenna Array Processing for GPS Receivers Adaptive Antenna Array Processing for GPS Receivers By Yaohua Zheng Thesis submitted for the degree of Master of Engineering Science School of Electrical & Electronic Engineering Faculty of Engineering,

More information

OVERVIEW OF MULTI-CARRIER AND MULTI-CODED SPREAD SPECTRUM SYSTEMS

OVERVIEW OF MULTI-CARRIER AND MULTI-CODED SPREAD SPECTRUM SYSTEMS Chapter - 2 OVERVIEW OF MULTI-CARRIER AND MULTI-CODED SPREAD SPECTRUM SYSTEMS This chapter aims to give an overview of the principles of multi-carrier and multi-coded spread spectrum systems, which are

More information

Design of 2 4 Alamouti Transceiver Using FPGA

Design of 2 4 Alamouti Transceiver Using FPGA Design of 2 4 Alamouti Transceiver Using FPGA Khalid Awaad Humood Electronic Dept. College of Engineering, Diyala University Baquba, Diyala, Iraq Saad Mohammed Saleh Computer and Software Dept. College

More information

Evaluation of Code Division Multiplexing on Power Line Communication

Evaluation of Code Division Multiplexing on Power Line Communication Evaluation of Code Division Multiplexing on Power Line Communication Adriano Favaro and Eduardo Parente Ribeiro Department of Electrical Engineering, Federal University of Parana CP 90, CEP 853-970 - Curitiba,

More information

CDMA Technology. Pr. S.Flament Pr. Dr. W.Skupin On line Course on CDMA Technology

CDMA Technology. Pr. S.Flament   Pr. Dr. W.Skupin   On line Course on CDMA Technology CDMA Technology Pr. Dr. W.Skupin www.htwg-konstanz.de Pr. S.Flament www.greyc.fr/user/99 On line Course on CDMA Technology CDMA Technology : Introduction to spread spectrum technology CDMA / DS : Principle

More information

Multiplexing Module W.tra.2

Multiplexing Module W.tra.2 Multiplexing Module W.tra.2 Dr.M.Y.Wu@CSE Shanghai Jiaotong University Shanghai, China Dr.W.Shu@ECE University of New Mexico Albuquerque, NM, USA 1 Multiplexing W.tra.2-2 Multiplexing shared medium at

More information

Hardware/Software Co-Simulation of BPSK Modulator Using Xilinx System Generator

Hardware/Software Co-Simulation of BPSK Modulator Using Xilinx System Generator IOSR Journal of Engineering (IOSRJEN) e-issn: 2250-3021, p-issn: 2278-8719, Volume 2, Issue 10 (October 2012), PP 54-58 Hardware/Software Co-Simulation of BPSK Modulator Using Xilinx System Generator Thotamsetty

More information

Year : TYEJ Sub: Digital Communication (17535) Assignment No. 1. Introduction of Digital Communication. Question Exam Marks

Year : TYEJ Sub: Digital Communication (17535) Assignment No. 1. Introduction of Digital Communication. Question Exam Marks Assignment 1 Introduction of Digital Communication Sr. Question Exam Marks 1 Draw the block diagram of the basic digital communication system. State the function of each block in detail. W 2015 6 2 State

More information

DESIGN AND IMPLEMENTATION OF INTEGRATED GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) RECEIVER. B.Tech Thesis Report

DESIGN AND IMPLEMENTATION OF INTEGRATED GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) RECEIVER. B.Tech Thesis Report Indian Institute of Technology Jodhpur DESIGN AND IMPLEMENTATION OF INTEGRATED GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) RECEIVER B.Tech Thesis Report Submitted by Arun Balajee V, Aswin Suresh and Mahesh

More information