A Software Implemented Spread Spectrum Modem based on two TMS320C50 DSPs
|
|
- Blaze Logan
- 5 years ago
- Views:
Transcription
1 A Software Implemented Spread Spectrum Modem based on two TMS320C50 DSPs Eric Kooistra Eindhoven University of Technology, Faculty of Electrical Engineering, Telecommunications Division, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, fax: +31-(0) Abstract A BPSKIDS-CDMA modem is described. Many functions of this spread spectrum modem are implemented in software on a DSP board. Constraints for proper IF receiver operation are given, plus BER measurement results for a prototype and a frequency-synthesizer resolution enhancement algorithm. Brief description of the poster session The poster session describes the design of a direct-sequence spread spectrum modem based on a signal processing board that contains a D/A-converter, an AID-converter, and two digital signal processors (DSP) [2,3]. The spread spectrum signal is generated at baseband by multiplying each bit with the pseudo-noise code, so Tb=NcTc where Nc is the code length [chips]. The modulation scheme applied is BPSK with square-root raised-cosine pulse shaping of the chips (p 1). The IF receiver demodulates the input signal at an intermediate frequency (e.g. hr128 khz) through coherent subsampling, using a software Costas loop for carrier tracking. This subsampling creates a baseband replica by spectrum folding (p2). The despreading also occurs in software by means of a serial search code acquisition scheme, and a delay-lock loop (DLL) for code tracking [6]. The proper operation of the DLL and Costas loop is determined by three constraints that concern the resolution of the sample frequency its and chip rate!c, the loop bandwidth BL and the loop sample frequency ff [1,4,5] (p3). A prototype version of the modem was built using one TMS32OC25 DSP. This prototype can achieve 16 kchip/s and measurement results are presented of its bit error rate performance (p4). A new design of the modem uses two TMS32OC50 DSPs. On this new modem a multiple correlator scheme can be implemented, in order to increase the sample frequencies of the loops, so fs»ij, instead of fs=fb' Furthermore, thanks to a smooth resolution enhancement algorithm, both the sampling frequency and the chip rate can be generated by means of the timers of the DSPs. The algorithm has a recursive structure and is implemented by means of a look-up table. The O's and 1 's in this table state whether the next timer period has to be T or T+l [.1.Tmin], and the size of the table determines the resolution enhancement factor (e.g. a factor 7). Together the two DSPs are expected to be sufficiently powerful to implement in software all functions of the baseband transmitter and IF receiver for chip rates up to 64 kchip/s (p5). References [1] Best, E.B., Phase-locked loops, theory, design and applications, second edition, McGraw Hill, 1993 [2] Kamperman, F.L.A.J., Design study for a spread-spectrum picoterminal satellite network and the realization of a modem, IVO Report EUT, Telecommunications Division, 1993 [3] Kooistra, E., On the development of a spread spectrum transceiver based on a digital signal processor, IVO Report EUT, Telecommunications Division, 1995 [4] Lindsey, W.C., C.M. Chie, A survey of digital phase-locked loops, Proceedings IEEE, Vol. 69, pp , Apr [5] Natali, P.D., All-digital coherent demodulator techniques, Proc. lnt. Telemetering Conf., Vol. VIII, pp , Oct [6] Ziemer, R.E. and R.L. Peterson, Digital communications and spread spectrum systems, Macmillan Publishing Company,
2 The BPSK / DS-CDMA transceiver pi The baseband transmitter and modulator data c od e d; Data signal Pi Pulse i --..t fb spreader shaping I DAC f--~ LPF T fo. filter f DAC Pi I' Vo(t) = Ad(t)p(t), , cos(21tfil,t) BPSK modulator C25-transceiver Transmit clock analog IF carrier oscillator The IF receiver BPFR Frequency synthesizer To analog amplifiers in the receiver AGC,-{ Receiver control I frs NCO J~, 2(,,. Vi Digital I,Q Pulse shaping ~ - data.. ADC f-+ --JI> Despreading r flf down conversion HR(z) i fb i C25-transceiver Tasks: Demodulation Despreading ~databits 92
3 Demodulation by subsampling p2 4 Digital I,Q downconversion, ffs = 2m+ 1 fif Time domain: = sample moment t Frequency domain: Baseband replica 93
4 p3 Oespreading by correlating with the code I It====== ~ Correlators Correlators Code tracking Early Late IF in Baseband PN code generator i Chip rate NCO 1'01-",, Data out Digital Central l'v lc ~ Nc downconverter VI I VIC> V QC ADC I,Q ~-' i Correlators If i f l VQ ' ' Nd Frequency fro synthesizer Costas loop Sampling frequency Carrier tracking Code Code phase! shift II I acquisition I i I j -- ::::]. 1 1.,, 1 Receiver control I 1 I... _.. * Functions: 1 Code acquisition (coarse) 2a Code tracking delay-lock loop, DLL (fine) 2b IF carrier tracking Costas loop Constraints for the loops:. 1 DLL: ~Tmin< SON f ' d c Costas: LiT ;in < O.SBL, Tc ~fmin< O.SBL, 94
5 Performance of the C25-transceiver p4 BER measurement results: 10 2~~~~~,..,.,..,..,..,~~~-:-c-:-:-:-:-~~~~~.,...,..,...,~ :::: ::::: ::,:: ::::: ::: ::,:,:::,::,: ::,: :::.::: :::.:::: ::::::: :,:: :: :::::,:,::::::,.:::,: ::::... : : : : : : : : : : : : ::: : : : : : : : : : : ::: : : : : : : : ' : : : ~ : : :: : : : : : : : ~ : : ; : : : : : : : : :::: ::::::::: ~ : : : : : : : : : : : ;.:.:::::::,, "... '., ' '.',, l', ', '.'.,, (.,. ',',...,.. ","",-,...,:...,... ':'.,...,...,. : '..,... ".. :...,...,' ':... ".., ~ ,... -'...,...,...,...,......,..., '...,...,...,., ~...,,..,,.".. ~~~ T~~!!~~~~!::T!n!~:Ly!!:!::d:::::~::::~i::;»::: :TT::\~:::: ::<~T>:T:... ".,...,..., ','.. """.,.".,;'"...,' "',""..,. '.'...,.,.,,'.., '.,,... ",".,."""...,...,...,.... "... "..,...,.,,, ' '1...,..,.... :. ~ : : ~ : : :. : ::: : : : : : : : : : : ::: : : : : : : :~: ~: : :. ~ : ~ : : : : : ~ ~ : : : : : ~ ~ : ~. :::. : :. : : : : : : : : : : : : : : : : : : : ;: ::.....,., : - : Nc=15 : : :,,: :!::.7!!::!!!!!:: i::!!!::::!!!!!::::::!: J::!:!:':::i!::,,:::!!::!::' '-tl,,':!::::::::::,..""",..:"..,.. ".,.;... "... ";...,..,,. ':.,.. "....;.,... "".,;,...,.,.,..., " ~ ~ ::]:]!:: i!!!:::::::: ::!;: : :;: : ~ : :! ::::::: i: : : : : ~ : ::::::!::::!:;:::::::: j : \ : ; :!::!:: ~ ::::::::::::::::::::::::}:::::::::::1:::::::::::::::::::::::::::::::::::::i:::: ::::::1:\:::::::..,,...,., " ' :. ;.,,.". "', '..,,....,...,, ~... '...,': " , _...L..-_...I..-_-.l..-.._-1--_--'---_--'--_---:""::-_-----: Eb/No [db] Chip rate: fc ~ 16 kchip/s (due to limited processor capabilities) Bit rate: fb ~ 250 bitls (due to the minimum update frequency fs of the control loops ) code length: Nc = 63 chips 95
6 The CSO-transceiver p5 Schematic diagram of the DSP board: Receiving t Transmitting ~r ADC DAC L ;). I timer I TMS320 C50.. timer J TMS320 C50 Expected performance: - fc = 64 kchip/s - Increased fs by means of multiple correlators Particularities: ADC samples switch - Two timers for generating Tc and T fs ~:~:~:~:~:~:~ ~ 0,0,1,0,0,0,1.4 "'R p 0, 1,0, 1,0,0, 1 Resolution enhancement algonthm, e.g.: 0,1,1,0, 1,0,1 0, 1, 1, 1, 0, 1, 1 0, 1, 1, 1, 1, 1, 1 1, 1, 1, 1, 1, 1, 1 96
THIS work focus on a sector of the hardware to be used
DISSERTATION ON ELECTRICAL AND COMPUTER ENGINEERING 1 Development of a Transponder for the ISTNanoSAT (November 2015) Luís Oliveira luisdeoliveira@tecnico.ulisboa.pt Instituto Superior Técnico Abstract
More informationResearch on DQPSK Carrier Synchronization based on FPGA
Journal of Information Hiding and Multimedia Signal Processing c 27 ISSN 273-422 Ubiquitous International Volume 8, Number, January 27 Research on DQPSK Carrier Synchronization based on FPGA Shi-Jun Kang,
More informationSpread 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 informationCommunication systems employing spread spectrum
BITSPREADER - 2: A SOFTWARE CONFIGURABLE SPREAD SPECTRUM TRANSCEIVER Henrique C. Miranda,VictorM.G.Alves,Tânia C. S. Pinto and Sílvio A. Abrantes INESC Porto, Largo Mompilher, 22-45 Porto (Portugal) Tel.:
More informationA Software Configurable Spread Spectrum Transceiver
A Software Configurable Spread Spectrum Transceiver Henrique C. Miranda and Sílvio A. Abrantes INESC Porto, Largo Mompilher, 22-45 Porto (Portugal) Tel.: +351 2 294243, Fax: +315 2 284172 E-mail: hmiranda@inescn.pt
More informationABHELSINKI UNIVERSITY OF TECHNOLOGY
CDMA receiver algorithms 14.2.2006 Tommi Koivisto tommi.koivisto@tkk.fi CDMA receiver algorithms 1 Introduction Outline CDMA signaling Receiver design considerations Synchronization RAKE receiver Multi-user
More informationDesign 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 informationPERFORMANCE EVALUATION OF WCDMA SYSTEM FOR DIFFERENT MODULATIONS WITH EQUAL GAIN COMBINING SCHEME
PERFORMANCE EVALUATION OF WCDMA SYSTEM FOR DIFFERENT MODULATIONS WITH EQUAL GAIN COMBINING SCHEME Rajkumar Gupta Assistant Professor Amity University, Rajasthan Abstract The performance of the WCDMA system
More informationFaculty of Information Engineering & Technology. The Communications Department. Course: Advanced Communication Lab [COMM 1005] Lab 6.
Faculty of Information Engineering & Technology The Communications Department Course: Advanced Communication Lab [COMM 1005] Lab 6.0 NI USRP 1 TABLE OF CONTENTS 2 Summary... 2 3 Background:... 3 Software
More informationSatellite 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 informationGPS software receiver implementations
GPS software receiver implementations OLEKSIY V. KORNIYENKO AND MOHAMMAD S. SHARAWI THIS ARTICLE PRESENTS A DETAILED description of the various modules needed for the implementation of a global positioning
More informationB SCITEQ. Transceiver and System Design for Digital Communications. Scott R. Bullock, P.E. Third Edition. SciTech Publishing, Inc.
Transceiver and System Design for Digital Communications Scott R. Bullock, P.E. Third Edition B SCITEQ PUBLISHtN^INC. SciTech Publishing, Inc. Raleigh, NC Contents Preface xvii About the Author xxiii Transceiver
More informationPERFORMANCE 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 informationHigh 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 informationA Multicarrier CDMA Based Low Probability of Intercept Network
A Multicarrier CDMA Based Low Probability of Intercept Network Sayan Ghosal Email: sayanghosal@yahoo.co.uk Devendra Jalihal Email: dj@ee.iitm.ac.in Giridhar K. Email: giri@ee.iitm.ac.in Abstract The need
More informationCDMA 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 informationDATA INTEGRATION MULTICARRIER REFLECTOMETRY SENSORS
Report for ECE 4910 Senior Project Design DATA INTEGRATION IN MULTICARRIER REFLECTOMETRY SENSORS Prepared by Afshin Edrissi Date: Apr 7, 2006 1-1 ABSTRACT Afshin Edrissi (Cynthia Furse), Department of
More informationA contribution to a virtual prototyping for a spread spectrum telecommunication system using VHDL-AMS
A contribution to a virtual prototyping for a spread spectrum telecommunication system using VHDL-AMS GUILLEMINOT Céline ICARE, 1 Place G.Brassens, 3173 BLAGNAC, FRANCE guillemi@iut-blagnac.fr ANDRIEUX
More informationBIT SYNCHRONIZERS FOR PSK AND THEIR DIGITAL IMPLEMENTATION
BIT SYNCHRONIZERS FOR PSK AND THEIR DIGITAL IMPLEMENTATION Jack K. Holmes Holmes Associates, Inc. 1338 Comstock Avenue Los Angeles, California 90024 ABSTRACT Bit synchronizers play an important role in
More informationSpread 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 informationGNSS 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 informationTHE DESIGN OF C/A CODE GLONASS RECEIVER
THE DESIGN OF C/A CODE GLONASS RECEIVER Liu Hui Cheng Leelung Zhang Qishan ABSTRACT GLONASS is similar to GPS in many aspects such as system configuration, navigation mechanism, signal structure, etc..
More informationParallel Digital Architectures for High-Speed Adaptive DSSS Receivers
Parallel Digital Architectures for High-Speed Adaptive DSSS Receivers Stephan Berner and Phillip De Leon New Mexico State University Klipsch School of Electrical and Computer Engineering Las Cruces, New
More informationRealization of Programmable BPSK Demodulator-Bit Synchronizer using Multirate Processing
International Journal of Electrical and Computer Engineering (IJECE) Vol. 4, No. 3, June 2014, pp. 433~440 ISSN: 2088-8708 433 Realization of Programmable BPSK Demodulator-Bit Synchronizer using Multirate
More informationA MODIFIED DIRECT-SEQUENCE SPREAD SPECTRUM MODULATION SCHEME FOR BURST TRANSMISSIONS. Bart Scheers and Vincent Le Nir
A MODIFIED DIRECT-SEQUENCE SPREAD SPECTRUM MODULATION SCHEME FOR BURST TRANSMISSIONS Bart Scheers and Vincent Le Nir CISS Department Royal Military Academy RMA) Brussels, Belgium {bart.scheers, vincent.lenir}@rma.ac.be
More informationCode 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 informationParallel Programming Design of BPSK Signal Demodulation Based on CUDA
Int. J. Communications, Network and System Sciences, 216, 9, 126-134 Published Online May 216 in SciRes. http://www.scirp.org/journal/ijcns http://dx.doi.org/1.4236/ijcns.216.9511 Parallel Programming
More informationRELIABLE UNDERWATER COMMUNICATION SYSTEM FOR SHALLOW COASTAL WATERS JAN SCHMIDT
Volume 17 HYDROACOUSTICS RELIABLE UNDERWATER COMMUNICATION SYSTEM FOR SHALLOW COASTAL WATERS JAN SCHMIDT Gdansk University of Technology Faculty of Electronics, Telecommunication and Informatics Department
More informationGPS RECEIVER IMPLEMENTATION USING SIMULINK
GPS RECEIVER IMPLEMENTATION USING SIMULINK C.Abhishek 1, A.Charitha 2, Dasari Goutham 3 1 Student, SCSVMV University, Kanchipuram 2 Student, kl university, Vijayawada 3 Student, SVEC college, Tirupati
More informationA 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 informationCDMA 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 informationDynamic bandwidth direct sequence - a novel cognitive solution for ultra-wideband communications
University of Wollongong Research Online University of Wollongong Thesis Collection 1954-2016 University of Wollongong Thesis Collections 2008 Dynamic bandwidth direct sequence - a novel cognitive solution
More informationMODULATION AND MULTIPLE ACCESS TECHNIQUES
1 MODULATION AND MULTIPLE ACCESS TECHNIQUES Networks and Communication Department Dr. Marwah Ahmed Outlines 2 Introduction Digital Transmission Digital Modulation Digital Transmission of Analog Signal
More informationUsing Modern Design Tools To Evaluate Complex Communication Systems: A Case Study on QAM, FSK and OFDM Transceiver Design
Using Modern Design Tools To Evaluate Complex Communication Systems: A Case Study on QAM, FSK and OFDM Transceiver Design SOTIRIS H. KARABETSOS, SPYROS H. EVAGGELATOS, SOFIA E. KONTAKI, EVAGGELOS C. PICASIS,
More informationAnalysis 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 informationISSCC 2003 / SESSION 20 / WIRELESS LOCAL AREA NETWORKING / PAPER 20.5
ISSCC 2003 / SESSION 20 / WIRELESS LOCAL AREA NETWORKING / PAPER 20.5 20.5 A 2.4GHz CMOS Transceiver and Baseband Processor Chipset for 802.11b Wireless LAN Application George Chien, Weishi Feng, Yungping
More informationReal-time FPGA realization of an UWB transceiver physical layer
University of Wollongong Research Online University of Wollongong Thesis Collection 1954-2016 University of Wollongong Thesis Collections 2005 Real-time FPGA realization of an UWB transceiver physical
More informationTowards an IEEE SDR Transceiver
Towards an IEEE 802.15.4 SDR Transceiver Rapid prototyping of an all-digital implementation Josep Sabater ( jsabaterm@el.ub.es) Departament d'electrònica Universitat de Barcelona Index Topics of the presentation
More information9 Best Practices for Optimizing Your Signal Generator Part 2 Making Better Measurements
9 Best Practices for Optimizing Your Signal Generator Part 2 Making Better Measurements In consumer wireless, military communications, or radar, you face an ongoing bandwidth crunch in a spectrum that
More informationMaking Noise in RF Receivers Simulate Real-World Signals with Signal Generators
Making Noise in RF Receivers Simulate Real-World Signals with Signal Generators Noise is an unwanted signal. In communication systems, noise affects both transmitter and receiver performance. It degrades
More informationSOFTWARE RADIOS APPLYING TO THE DGPS TRANSCEIVERS
SOFTWARE RADIOS APPLYING TO THE DGPS TRANSCEIVERS Item Type text; Proceedings Authors Wu, Hao; Zhang, Naitong Publisher International Foundation for Telemetering Journal International Telemetering Conference
More informationBPSK Modulator and Demodulator
RadFXSat- (Fox-1E) BPSK Modulator and Demodulator Chris Thompson, G0KLA / ACCZ November 018 1 Requirements Fox-1E RF Design required a 45MHz carrier with PSK modulation, to mix with TX signal Had to work
More informationProf. 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 informationLecture 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 informationAcquisition 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 informationReconfigurable and Simultaneous Dual Band Galileo/GPS Front-end Receiver in 0.13µm RFCMOS
Reconfigurable and Simultaneous Dual Band Galileo/GPS Front-end Receiver in 0.13µm RFCMOS A. Pizzarulli 1, G. Montagna 2, M. Pini 3, S. Salerno 4, N.Lofu 2 and G. Sensalari 1 (1) Fondazione Torino Wireless,
More informationDigital 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 informationAnalog and Telecommunication Electronics
Politecnico di Torino Electronic Eng. Master Degree Analog and Telecommunication Electronics C5 - Synchronous demodulation» AM and FM demodulation» Coherent demodulation» Tone decoders AY 2015-16 19/03/2016-1
More informationAN EXTENDED PHASE-LOCK TECHNIQUE FOR AIDED ACQUISITION
AN EXTENDED PHASE-LOCK TECHNIQUE FOR AIDED ACQUISITION Item Type text; Proceedings Authors Barbour, Susan Publisher International Foundation for Telemetering Journal International Telemetering Conference
More informationFully integrated UHF RFID mobile reader with power amplifiers using System-in-Package (SiP)
Fully integrated UHF RFID mobile reader with power amplifiers using System-in-Package (SiP) Hyemin Yang 1, Jongmoon Kim 2, Franklin Bien 3, and Jongsoo Lee 1a) 1 School of Information and Communications,
More informationPart 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 informationCDMA 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 informationOn the Design of Software and Hardware for a WSN Transmitter
16th Annual Symposium of the IEEE/CVT, Nov. 19, 2009, Louvain-La-Neuve, Belgium 1 On the Design of Software and Hardware for a WSN Transmitter Jo Verhaevert, Frank Vanheel and Patrick Van Torre University
More informationDOPPLER SHIFTED SPREAD SPECTRUM CARRIER RECOVERY USING REAL-TIME DSP TECHNIQUES
DOPPLER SHIFTED SPREAD SPECTRUM CARRIER RECOVERY USING REAL-TIME DSP TECHNIQUES Bradley J. Scaife and Phillip L. De Leon New Mexico State University Manuel Lujan Center for Space Telemetry and Telecommunications
More informationMehmet SÖNMEZ and Ayhan AKBAL* Electrical-Electronic Engineering, Firat University, Elazig, Turkey. Accepted 17 August, 2012
Vol. 8(34), pp. 1658-1669, 11 September, 2013 DOI 10.5897/SRE12.171 ISSN 1992-2248 2013 Academic Journals http://www.academicjournals.org/sre Scientific Research and Essays Full Length Research Paper Field-programmable
More informationPerformance Comparison of RAKE and Hypothesis Feedback Direct Sequence Spread Spectrum Techniques for Underwater Communication Applications
Performance Comparison of RAKE and Hypothesis Feedback Direct Sequence Spread Spectrum Techniques for Underwater Communication Applications F. Blackmon, E. Sozer, M. Stojanovic J. Proakis, Naval Undersea
More informationSYSTEM MODEL. Transmitter Preamble Configuration
ACQUISITION FOR SATELLITE UMTS WITH LARGE FREQUENCY OFFSETS M. C. Reed Applicable Research and Technology Ascom Systec AG, Switzerland Ph: +41 62 889 5293 Fx: +41 62 889 529 mark.reed@ascom.ch Abstract-
More informationAN FPGA RECEIVER FOR CPSK SPREAD SPECTRUM SIGNALING
AN FPGA RECEIVER FOR CPSK SPREAD SPECTRUM SIGNALING Sunny K S Chan and Victor C M Leung Department of Electrical and Computer Engineering The University of British Columbia Vancouver, B C, Canada, V6T
More informationON SYMBOL TIMING RECOVERY IN ALL-DIGITAL RECEIVERS
ON SYMBOL TIMING RECOVERY IN ALL-DIGITAL RECEIVERS 1 Ali A. Ghrayeb New Mexico State University, Box 30001, Dept 3-O, Las Cruces, NM, 88003 (e-mail: aghrayeb@nmsu.edu) ABSTRACT Sandia National Laboratories
More information: DIGITAL COMMUNICATION
SRM UNIVERSITY FACULTY OF ENGINEERING AND TECHNOLOGY DEPARTMENT OF ECE COURSE PLAN Course Code : EC0307 Course Title : DIGITAL COMMUNICATION Semester : V Course Time : JULY NOVEMBER 2012 Location : S.R.M.TECH
More informationEC 551 Telecommunication System Engineering. Mohamed Khedr
EC 551 Telecommunication System Engineering Mohamed Khedr http://webmail.aast.edu/~khedr 1 Mohamed Khedr., 2008 Syllabus Tentatively Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 Week 9 Week
More informationBER 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 informationUSE OF MATLAB IN SIGNAL PROCESSING LABORATORY EXPERIMENTS
USE OF MATLAB SIGNAL PROCESSG LABORATORY EXPERIMENTS R. Marsalek, A. Prokes, J. Prokopec Institute of Radio Electronics, Brno University of Technology Abstract: This paper describes the use of the MATLAB
More informationLaboratory 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 informationAdoption of this document as basis for broadband wireless access PHY
Project Title Date Submitted IEEE 802.16 Broadband Wireless Access Working Group Proposal on modulation methods for PHY of FWA 1999-10-29 Source Jay Bao and Partha De Mitsubishi Electric ITA 571 Central
More informationIP-PSK-DEMOD4. BPSK, QPSK, 8-PSK Demodulator for FPGA FEATURES DESCRIPTION APPLICATIONS HARDWARE SUPPORT DELIVERABLES
BPSK, QPSK, 8-PSK Demodulator for FPGA v1.3 FEATURES Multi-mode Phase Shift Keyed demodulator supports BPSK, QPSK, 8-PSK Symbol rates up to 682.5 KSPS Matched filtering with programmable Root Raised Cosine
More informationUnit 1 Introduction to Spread- Spectrum Systems. Department of Communication Engineering, NCTU 1
Unit 1 Introduction to Spread- Spectrum Systems Department of Communication Engineering, NCTU 1 What does it mean by spread spectrum communications Spread the energy of an information bit over a bandwidth
More informationSOQPSK Software Defined Radio
SOQPSK Software Defined Radio Item Type text; Proceedings Authors Nash, Christopher; Hogstrom, Christopher Publisher International Foundation for Telemetering Journal International Telemetering Conference
More information2011 PSW American Society for Engineering Education Conference
Communications Laboratory with Commercial Test and Training Instrument Peter Kinman and Daniel Murdock California State University Fresno Abstract A communications laboratory course has been designed around
More informationLab 3.0. Pulse Shaping and Rayleigh Channel. Faculty of Information Engineering & Technology. The Communications Department
Faculty of Information Engineering & Technology The Communications Department Course: Advanced Communication Lab [COMM 1005] Lab 3.0 Pulse Shaping and Rayleigh Channel 1 TABLE OF CONTENTS 2 Summary...
More informationSC - 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 informationDEPARTMENT OF COMPUTER GCE@Bodi_ SCIENCE GCE@Bodi_ AND ENIGNEERING GCE@Bodi_ GCE@Bodi_ GCE@Bodi_ Analog and Digital Communication GCE@Bodi_ DEPARTMENT OF CsE Subject Name: Analog and Digital Communication
More informationBy Nour Alhariqi. nalhareqi
By Nour Alhariqi nalhareqi - 2014 1 Outline Basic background Research work What I have learned nalhareqi - 2014 2 DS-CDMA Technique For years, direct sequence code division multiple access (DS-CDMA) appears
More informationBPSK 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 informationI-Q transmission. Lecture 17
I-Q Transmission Lecture 7 I-Q transmission i Sending Digital Data Binary Phase Shift Keying (BPSK): sending binary data over a single frequency band Quadrature Phase Shift Keying (QPSK): sending twice
More informationImplementation of a BPSK Transceiver for use with KUAR
Implementation of a BPSK Transceiver for use with KUAR Ryan Reed M.S. Candidate Information and Telecommunication Technology Center Electrical Engineering and Computer Science The University of Kansas
More informationSpread 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 informationChaos 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 informationTwelve voice signals, each band-limited to 3 khz, are frequency -multiplexed using 1 khz guard bands between channels and between the main carrier
Twelve voice signals, each band-limited to 3 khz, are frequency -multiplexed using 1 khz guard bands between channels and between the main carrier and the first channel. The modulation of the main carrier
More informationPerformance 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 informationSpread 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 informationLOW DATA RATE BPSK DEMODULATION IN PRESENCE OF DOPPLER
LOW DATA RATE BPSK DEMODULATION IN PRESENCE OF DOPPLER Aghanash Karthik 1 Ashwin.R 2, Dr.Sambasiva Rao.V 3, Prof. V. Mahadevan 4 1,2,3 Dept. of ECE, PESIT, Bangalore, 4 Dept. of TCE, PESIT, Bangalore Abstract
More informationEXPERIMENT WISE VIVA QUESTIONS
EXPERIMENT WISE VIVA QUESTIONS Pulse Code Modulation: 1. Draw the block diagram of basic digital communication system. How it is different from analog communication system. 2. What are the advantages of
More information2284 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 43, NO. 10, OCTOBER /$ IEEE
2284 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 43, NO. 10, OCTOBER 2008 A 622-Mb/s Mixed-Mode BPSK Demodulator Using a Half-Rate Bang-Bang Phase Detector Duho Kim, Student Member, IEEE, Kwang-chun Choi,
More informationFEATURES DESCRIPTION BENEFITS APPLICATIONS. Preliminary PT4501 Sub-1 GHz Wideband FSK Transceiver
Preliminary PT4501 Sub-1 GHz Wideband FSK Transceiver DESCRIPTION The PT4501 is a highly integrated wideband FSK multi-channel half-duplex transceiver operating in sub-1 GHz license-free ISM bands. The
More informationUsing a design-to-test capability for LTE MIMO (Part 1 of 2)
Using a design-to-test capability for LTE MIMO (Part 1 of 2) System-level simulation helps engineers gain valuable insight into the design sensitivities of Long Term Evolution (LTE) Multiple-Input Multiple-Output
More informationStudy on the UWB Rader Synchronization Technology
Study on the UWB Rader Synchronization Technology Guilin Lu Guangxi University of Technology, Liuzhou 545006, China E-mail: lifishspirit@126.com Shaohong Wan Ari Force No.95275, Liuzhou 545005, China E-mail:
More informationSpread spectrum. Outline : 1. Baseband 2. DS/BPSK Modulation 3. CDM(A) system 4. Multi-path 5. Exercices. Exercise session 7 : Spread spectrum 1
Spread spectrum Outline : 1. Baseband 2. DS/BPSK Modulation 3. CDM(A) system 4. Multi-path 5. Exercices Exercise session 7 : Spread spectrum 1 1. Baseband +1 b(t) b(t) -1 T b t Spreading +1-1 T c t m(t)
More informationSatellite 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 informationMonitoring Station for GNSS and SBAS
Monitoring Station for GNSS and SBAS Pavel Kovář, Czech Technical University in Prague Josef Špaček, Czech Technical University in Prague Libor Seidl, Czech Technical University in Prague Pavel Puričer,
More informationAN IMPROVED WINDOW BLOCK CORRELATION ALGORITHM FOR CODE TRACKING IN W-CDMA
Al-Qadisiya Journal For Engineering Sciences, Vol. 5, No. 4, 367-376, Year 01 AN IMPROVED WINDOW BLOCK CORRELATION ALGORITHM FOR CODE TRACKING IN W-CDMA Hassan A. Nasir, Department of Electrical Engineering,
More informationFFT Based Carrier Recovery with Lower Processing Speed Using DSP Techniques
FFT Based Carrier Recovery with Lower Processing Speed Using DSP Techniques Vikas Kumar 1, Divya K. N 2 1,2 RFC-BEL Bangalore, MIT Manipal ABSTRACT Carrier recovery is one of most important block during
More informationISSCC 2006 / SESSION 33 / MOBILE TV / 33.4
33.4 A Dual-Channel Direct-Conversion CMOS Receiver for Mobile Multimedia Broadcasting Vincenzo Peluso, Yang Xu, Peter Gazzerro, Yiwu Tang, Li Liu, Zhenbiao Li, Wei Xiong, Charles Persico Qualcomm, San
More informationEE 460L University of Nevada, Las Vegas ECE Department
EE 460L PREPARATION 1- ASK Amplitude shift keying - ASK - in the context of digital communications is a modulation process which imparts to a sinusoid two or more discrete amplitude levels. These are related
More informationThe BER Evaluation of UMTS under Static Propagation Conditions
Proceedings of the 5th WSEAS Int. Conf. on System Science and Simulation in Engineering, Tenerife, Canary Islands, Spain, December 16-18, 2006 310 The BER Evaluation of UMTS under Static Propagation Conditions
More informationThe Loss of Down Converter for Digital Radar receiver
The Loss of Down Converter for Digital Radar receiver YOUN-HUI JANG 1, HYUN-IK SHIN 2, BUM-SUK LEE 3, JEONG-HWAN KIM 4, WHAN-WOO KIM 5 1-4: Agency for Defense Development, Yuseong P.O. Box 35, Daejeon,
More informationADVANCED EXPERIMENTS IN MODERN COMMUNICATIONS
ADVANCED EXPERIMENTS IN MODERN COMMUNICATIONS NEW FIBER OPTICS KIT New Generation Single-Board Telecoms Experimenter for Advanced Experiments Emona ETT-101 BiSKIT Multi-Experiment Telecommunications &
More informationPearson Education Limited Edinburgh Gate Harlow Essex CM20 2JE England and Associated Companies throughout the world
Pearson Education Limited Edinburgh Gate Harlow Essex CM20 2JE England and Associated Companies throughout the world Visit us on the World Wide Web at: www.pearsoned.co.uk Pearson Education Limited 2014
More informationSequential compensation of RF impairments in OFDM systems
Sequential compensation of RF impairments in OFDM systems Fernando Gregorio, Juan Cousseau Universidad Nacional del Sur, Dpto. de Ingeniería Eléctrica y Computadoras, DIEC, IIIE-CONICET, Bahía Blanca,
More informationAdaptive DS/CDMA Non-Coherent Receiver using MULTIUSER DETECTION Technique
Adaptive DS/CDMA Non-Coherent Receiver using MULTIUSER DETECTION Technique V.Rakesh 1, S.Prashanth 2, V.Revathi 3, M.Satish 4, Ch.Gayatri 5 Abstract In this paper, we propose and analyze a new non-coherent
More information