Researches in Broadband Single Carrier Multiple Access Techniques
|
|
- Griffin Webb
- 5 years ago
- Views:
Transcription
1 Researches in Broadband Single Carrier Multiple Access Techniques Workshop on Fundamentals of Wireless Signal Processing for Wireless Systems Tohoku University, Sendai, Dr. Hyung G. Myung, Qualcomm
2 Outline Introduction Frequency Domain Equalization Single Carrier FDMA Summary and References 1
3 Prof. Adachi Prof. David Goodman NTT DOCOMO AT&T Bell Labs Tohoku U. Polytechnic U. 2
4 WICAT Workshop on SC-FDMA 12 oral presentations 4 IEEE Fellows including prof. Adachi (keynote speaker) 3
5 Outline Introduction Frequency Domain Equalization Single Carrier FDMA Summary and References 4
6 Number of Mobile Users Global Mobile Subscribers (billions)
7 Evolution of Mobile Traffic Voice Data Multimedia Data 6
8 Mobile Data Increase 7
9 Fundamental Constraints Shannon s capacity upper bound Channel bandwidth C = min(n T, N R ) BW log S N Spatial multiplexing Signal quality 8
10 Wider Bandwidth 100 MHz Demand for higher data rate is leading to utilization of wider transmission bandwidth. 20 MHz 200 khz 1.25 MHz 5 MHz GSM IS-95 UMTS/WCDMA LTE LTE-Advanced 9
11 Wireless Channel Wireless channel experiences multi-path radio propagation. 10
12 Multi-Path Channel Multi-path channel causes: Inter-symbol interference (ISI) and fading in the time domain. Frequency-selectivity in the frequency domain. 3GPP 6-Tap Typical Urban (TU6) Channel Delay Profile 2.5 Frequency Response of 3GPP TU6 Channel in 5MHz Band Amplitude [linear] Channel Gain [linear] Time [ sec] Frequency [MHz] 11
13 Multi-Path Channel - cont. For broadband wireless channel, ISI and frequency-selectivity become severe. To resolve the ISI and the frequency-selectivity in the channel, various measures are used. Channel equalization in the time domain or frequency domain Multi-carrier multiplexing Orthogonal Frequency Division Multiplexing (OFDM) Frequency hopping Channel-adaptive scheduling Channel coding Automatic repeat request (ARQ) and hybrid ARQ (H-ARQ) 12
14 Orthogonal Frequency Division Multiplexing Orthogonal Frequency Division Multiplexing (OFDM) Divide the broadband channel into much smaller subcarriers. Flat-fading on each subcarrier. Transmit data in parallel using orthogonal subcarriers. Channel response Subcarrier Frequency 13
15 OFDM - cont. Design issues of OFDM Cyclic prefix (CP): To maintain orthogonality among subcarriers in the pr esence of multi-path channel, CP longer than the channel impulse response is needed. Also CP converts linear convolution of the channel i mpulse response into a circular one. High peak-to-average power ratio (PAPR): Since the transmit signal is a c omposition of multiple subcarriers, high peaks occur. Carrier frequency offset: Frequency offset breaks the orthogonality and causes inter-carrier interference. Adaptive scheme or channel coding is needed to overcome the spectral null in the channel. 14
16 Outline Introduction Frequency Domain Equalization Single Carrier FDMA Summary and References 15
17 Frequency Domain Equaliztion Channel Time domain y h x x h 1 * y x h y Fourier transform Y H X Frequency domain 1 X H Y 16
18 FDE - cont. For broadband multi-path channels, conventional time domain equalizers are impractical because of complexity. Very long channel impulse response in the time domain. Prohibitively large tap size for time domain filter. Using discrete Fourier transform (DFT), equalization can be done in the frequency domain. Because the DFT size does not grow linearly with the length of the channel response, the complexity of FDE is lower than that of the equivalent time domain equalizer for broadband channel. 17
19 FDE - cont. In DFT, frequency domain multiplication is equivalent to time domain circular convolution. Cyclic prefix (CP) longer than the channel response length is needed to convert linear convolution to circular convolution. Or, perform overlap-and-add at the receiver without using CP. K. Takeda, H. Tomeba & F. Adachi, "Iterative Overlap FDE for DS-CDMA without GI," IEEE VTC-2006 Fall, Montreal. CP Symbols 18
20 FDE Most of the time domain equalization techniques can be implemented in the frequency domain. MMSE equalizer, DFE, turbo equalizer, and so on. - cont. References M. V. Clark, Adaptive Frequency-Domain Equalization and Diversity Combining for Broadband Wireless Communications, IEEE J. Sel. Areas Commun., vol. 16, no. 8, Oct M. Tüchler et al., Linear Time and Frequency Domain Turbo Equalization, Proc. IEEE 53rd Veh. Technol. Conf. (VTC), vol. 2, May 2001 F. Pancaldi et al., Block Channel Equalization in the Frequency Domain, IEEE Trans. Commun., vol. 53, no. 3, Mar F. Adachi et al., Broadband CDMA Techniques, IEEE Wireless Comm., vol. 12, no. 2, Apr
21 Single Carrier with FDE SC/FDE x n Add CP/ PS Channel Remove CP N- point DFT Equalization N- point IDFT Detect OFDM x n N- point IDFT Add CP/ PS Channel Remove CP N- point DFT Equalization Detect * CP: Cyclic Prefix, PS: Pulse Shaping 20
22 SC/FDE - cont. SC/FDE delivers performance similar to OFDM with essentially the same overall complexity, even for long channel delay. SC/FDE has advantage over OFDM in terms of: Low PAPR. Robustness to spectral null. Less sensitivity to carrier frequency offset. Disadvantage to OFDM is that channel-adaptive subcarrier bit and power loading is not possible. 21
23 Outline Introduction Frequency Domain Equalization Single Carrier FDMA Summary and References 22
24 Single Carrier FDMA Single carrier FDMA (SC-FDMA) is an extension of SC/FDE to accommodate multiple-user access. It has similar structure and performance to OFDMA. SC-FDMA is currently adopted as the uplink multiple access scheme in 3GPP LTE. 23
25 P-to-S S-to-P S-to-P P-to-S TX & RX structure of SC-FDMA N- point DFT Subcarrier Mapping M- point IDFT Add CP / PS DAC / RF Channel Detect N- point IDFT Subcarrier Demapping/ Equalization M- point DFT Remove CP RF / ADC * N < M * S-to-P: Serial-to-Parallel * P-to-S: Parallel-to-Serial SC-FDMA: OFDMA: + 24
26 P-to-S Why Single Carrier FDMA? Single Carrier : Sequential transmission of the symbols over a single frequency carrier. Time domain Frequency domain Time domain N- point DFT Subcarrier Mapping M- point IDFT Add CP / PS DAC / RF FDMA : User multiplexing in the frequency domain. 25
27 Subcarrier Mapping Data block size (N) = 4, Number of users (Q) = 3, Number of subcarriers (M) = 12. Terminal 1 Terminal 2 Terminal 3 subcarriers subcarriers Distributed Mode IFDMA, Block-IFDMA Localized Mode LTE Uplink 26
28 SC-FDMA and OFDMA Similarities Block-based modulation and use of CP. Divides the transmission bandwidth into smaller subcarriers. Channel inversion/equalization is done in the frequency domain. SC-FDMA is regarded as DFT-precoded or DFT-spread OFDMA. Dissimilarities Lower transmit peak power. Equalization performance. Multi-carrier MIMO receiver algorithm. 27
29 SC-FDMA and DS-CDMA In terms of bandwidth expansion, SC-FDMA is very similar to DS- CDMA system using orthogonal spreading codes. Both spread narrowband data into broader band. Time symbols are compressed into chips after modulation. Spreading gain (processing gain) is achieved. 28
30 SC-FDMA: Comparison * Subcarrier mapping: Frequency-selective scheduling SC-FDMA * SC transmission: Low PAPR * Time-compressed chip symbols * Time-domain detection * DFT-based FDE * Block-based processing & CP OFDMA DS-CDMA /FDE 29
31 0 subcarrier M- 1 SC-FDMA Modulation in LTE UL Zeros Subcarrier Mapping Localized mapping with an option of adaptive scheduling or random hopping. Serial- Parallel x M- 0, x1, xn 1 to- N-DFT -to- IDFT Parallel Serial Zeros x, x, xm One SC-FDMA symbol 30
32 LTE-Advanced: Carrier Aggregation Carrier Component (CC) 20 MHz 100 MHz 20 MHz R8 LTE 60 MHz Noncontiguous 60 MHz Contiguous Uplink multiple access scheme Clustered DFT spreading: N-times DFT-spread OFDM (per CC). 31
33 What s Next for Single Carrier? Ultra-wideband transmission 5G expected to increase bandwidth up to 3~400 MHz Single carrier transmission in mmwave Ultra-wideband transmission Point-to-point transmission RF contraints Single carrier multiple access for Internet-of-Things (IoT) Narrowband opportunistic transmission Low power operation Different classes of latency requirement 32
34 Outline Introduction Frequency Domain Equalization Single Carrier FDMA Summary and References 33
35 Summary Using DFT-precoding and frequency domain equalization, single carrier transmission can be as effective as multi-carrier transmission for broadband channels. Salient feature of single carrier is low peak transmit power. Well-suited for uplink or power-constraint transmission. 34
36 References Frequency domain equalization H. Sari et al., Transmission Techniques for Digital Terrestrial TV Broadcasting, IEEE Commun. Mag., vol. 33, no. 2, Feb D. Falconer et al., Frequency Domain Equalization for Single-Carrier Broadband Wireless Systems, IEEE Commun. Mag., vol. 40, no. 4, Apr F. Adachi et al., Broadband CDMA Techniques, IEEE Wireless Comm., vol. 12, no. 2, Apr IFDMA T. Frank et al., "IFDMA: A Scheme Combining the Advantages of OFDMA and CDMA," IEEE Wireless Commun., vol.14, no.3, June SC-FDMA H. G. Myung et al., Single Carrier FDMA for Uplink Wireless Transmission, IEEE Vehicular Technology Mag., vol. 1, no. 3, Sep H. G. Myung & D. Goodman, Single Carrier FDMA: A New Air Interface for Long Term Evolution, John Wiley & Sons, Nov
37 Congratulations! Thank you! Workshop on Fundamentals of Wireless Signal Processing for Wireless Systems Tohoku University, Sendai, Dr. Hyung G. Myung, Qualcomm
Single Carrier FDMA. May 18, Hyung G. Myung
Single Carrier FDMA May 18, 2008 Hyung G. Myung (hgmyung@ieee.org) Outline Introduction and Background Overview of SC-FDMA SC-FDMA Implementation in 3GPP LTE Peak Power Characteristics of SC-FDMA Signals
More informationTechnical Aspects of LTE Part I: OFDM
Technical Aspects of LTE Part I: OFDM By Mohammad Movahhedian, Ph.D., MIET, MIEEE m.movahhedian@mci.ir ITU regional workshop on Long-Term Evolution 9-11 Dec. 2013 Outline Motivation for LTE LTE Network
More informationFrequency-Domain Channel Estimation for Single- Carrier Transmission in Fast Fading Channels
Wireless Signal Processing & Networking Workshop Advanced Wireless Technologies II @Tohoku University 18 February, 2013 Frequency-Domain Channel Estimation for Single- Carrier Transmission in Fast Fading
More informationSingle Carrier Orthogonal Multiple Access Technique. for Broadband Wireless Communications DISSERTATION
Single Carrier Orthogonal Multiple Access Technique i for Broadband Wireless Communications DISSERTATION Submitted in Partial Fulfillment Of the Requirements for the Degree of DOCTOR OF PHILOSOPHY (Electrical
More informationECS455: Chapter 6 Applications
ECS455: Chapter 6 Applications 6.2 WiMAX 1 Dr.Prapun Suksompong prapun.com/ecs455 Office Hours: BKD 3601-7 Wednesday 15:30-16:30 Friday 9:30-10:30 Advanced Mobile Wirless Systems (IEEE) (Ultra Mobile Broadband)
More informationSingle Carrier Multi-Tone Modulation Scheme
Single Carrier Multi-Tone Modulation Scheme Roman M. Vitenberg Guarneri Communications Ltd, Israel roman@guarneri-communications.com Abstract In this paper, we propose a modulation scheme, which can improve
More informationImpact of the Solid State Power Amplifier on the BER Performance of the SC-FDMA System
Impact of the Solid State Power Amplifier on the Performance of the SC-FDMA System A.KHELIL Department of Electronics University of ELOUED PO Box 789 EL-OUED ALGERIA khelil_tel@yahoo.fr Abstract: - This
More informationUniversity of Bristol - Explore Bristol Research. Link to publication record in Explore Bristol Research PDF-document.
Mansor, Z. B., Nix, A. R., & McGeehan, J. P. (2011). PAPR reduction for single carrier FDMA LTE systems using frequency domain spectral shaping. In Proceedings of the 12th Annual Postgraduate Symposium
More informationPerformance Analysis of LTE System in term of SC-FDMA & OFDMA Monika Sehrawat 1, Priyanka Sharma 2 1 M.Tech Scholar, SPGOI Rohtak
Performance Analysis of LTE System in term of SC-FDMA & OFDMA Monika Sehrawat 1, Priyanka Sharma 2 1 M.Tech Scholar, SPGOI Rohtak 2 Assistant Professor, ECE Deptt. SPGOI Rohtak Abstract - To meet the increasing
More informationINTERFERENCE SELF CANCELLATION IN SC-FDMA SYSTEMS -A CAMPARATIVE STUDY
INTERFERENCE SELF CANCELLATION IN SC-FDMA SYSTEMS -A CAMPARATIVE STUDY Ms Risona.v 1, Dr. Malini Suvarna 2 1 M.Tech Student, Department of Electronics and Communication Engineering, Mangalore Institute
More informationChapter 5 OFDM. Office Hours: BKD Tuesday 14:00-16:00 Thursday 9:30-11:30
Chapter 5 OFDM 1 Office Hours: BKD 3601-7 Tuesday 14:00-16:00 Thursday 9:30-11:30 2 OFDM: Overview Let S 1, S 2,, S N be the information symbol. The discrete baseband OFDM modulated symbol can be expressed
More information(COMPUTER NETWORKS & COMMUNICATION PROTOCOLS) Ali kamil Khairullah Number:
(COMPUTER NETWORKS & COMMUNICATION PROTOCOLS) Ali kamil Khairullah Number: 15505071 22-12-2016 Downlink transmission is based on Orthogonal Frequency Division Multiple Access (OFDMA) which converts the
More informationAnju 1, Amit Ahlawat 2
Orthogonal Frequency Division Multiplexing Anju 1, Amit Ahlawat 2 1 Hindu College of Engineering, Sonepat 2 Shri Baba Mastnath Engineering College Rohtak Abstract: OFDM was introduced in the 1950s but
More informationNext Generation Synthetic Aperture Radar Imaging
Next Generation Synthetic Aperture Radar Imaging Xiang-Gen Xia Department of Electrical and Computer Engineering University of Delaware Newark, DE 19716, USA Email: xxia@ee.udel.edu This is a joint work
More informationEffects of Different modulation schemes in PAPR reduction of SC-FDMA System for Uplink Communication
Effects of Different modulation schemes in PAPR reduction of SC-FDMA System for Uplink Communication Prittu Ann Thomas 1, Prof M.Mathurakani 2 PG Student [Wireless Technology], Dept of ECE, Toc H Institute
More informationPage 1. Overview : Wireless Networks Lecture 9: OFDM, WiMAX, LTE
Overview 18-759: Wireless Networks Lecture 9: OFDM, WiMAX, LTE Dina Papagiannaki & Peter Steenkiste Departments of Computer Science and Electrical and Computer Engineering Spring Semester 2009 http://www.cs.cmu.edu/~prs/wireless09/
More informationForschungszentrum Telekommunikation Wien
Forschungszentrum Telekommunikation Wien OFDMA/SC-FDMA Basics for 3GPP LTE (E-UTRA) T. Zemen April 24, 2008 Outline Part I - OFDMA and SC/FDMA basics Multipath propagation Orthogonal frequency division
More informationCONVENTIONAL single-carrier (SC) modulations have
16 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 55, NO. 1, JANUARY 2007 A Turbo FDE Technique for Reduced-CP SC-Based Block Transmission Systems António Gusmão, Member, IEEE, Paulo Torres, Member, IEEE, Rui
More informationInvestigation on Multiple Antenna Transmission Techniques in Evolved UTRA. OFDM-Based Radio Access in Downlink. Features of Evolved UTRA and UTRAN
Evolved UTRA and UTRAN Investigation on Multiple Antenna Transmission Techniques in Evolved UTRA Evolved UTRA (E-UTRA) and UTRAN represent long-term evolution (LTE) of technology to maintain continuous
More informationLow-Complexity Beam Allocation for Switched-Beam Based Multiuser Massive MIMO Systems
Low-Complexity Beam Allocation for Switched-Beam Based Multiuser Massive MIMO Systems Jiangzhou Wang University of Kent 1 / 31 Best Wishes to Professor Fumiyuki Adachi, Father of Wideband CDMA [1]. [1]
More informationEvaluation of BER and PAPR by using Different Modulation Schemes in OFDM System
International Journal of Computer Networks and Communications Security VOL. 3, NO. 7, JULY 2015, 277 282 Available online at: www.ijcncs.org E-ISSN 2308-9830 (Online) / ISSN 2410-0595 (Print) Evaluation
More informationIntroduction to OFDM Systems
Introduction to OFDM Systems Dr. Prapun Suksompong prapun@siit.tu.ac.th June 23, 2010 1 Outline 1. Overview of OFDM technique 2. Wireless Channel 3. Multi-carrier Transmission 4. Implementation: DFT and
More informationPAPR Reduction in 4G Cellular Network: A SLM-based IFDMA Uplink System
Proceedings of the Pakistan Academy of Sciences 49 (2): 79-84 (2012) Copyright Pakistan Academy of Sciences ISSN: 0377-2969 Pakistan Academy of Sciences Original Article PAPR Reduction in 4G Cellular Network:
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 informationOrthogonal frequency division multiplexing (OFDM)
Orthogonal frequency division multiplexing (OFDM) OFDM was introduced in 1950 but was only completed in 1960 s Originally grew from Multi-Carrier Modulation used in High Frequency military radio. Patent
More informationLecture 3 Cellular Systems
Lecture 3 Cellular Systems I-Hsiang Wang ihwang@ntu.edu.tw 3/13, 2014 Cellular Systems: Additional Challenges So far: focus on point-to-point communication In a cellular system (network), additional issues
More informationS PG Course in Radio Communications. Orthogonal Frequency Division Multiplexing Yu, Chia-Hao. Yu, Chia-Hao 7.2.
S-72.4210 PG Course in Radio Communications Orthogonal Frequency Division Multiplexing Yu, Chia-Hao chyu@cc.hut.fi 7.2.2006 Outline OFDM History OFDM Applications OFDM Principles Spectral shaping Synchronization
More informationSINGLE CARRIER FDMA. Hyung G. Myung and David J. Goodman
SINGLE CARRIER FDMA Single Carrier FDMA: A New Air Interface for Long Term Evolution 2008 John Wiley & Sons, Ltd. ISBN: 978-0-470-72449-1 Hyung G. Myung and David J. Goodman Wiley Series on Wireless Communications
More informationChapter 6 Applications. Office Hours: BKD Tuesday 14:00-16:00 Thursday 9:30-11:30
Chapter 6 Applications 1 Office Hours: BKD 3601-7 Tuesday 14:00-16:00 Thursday 9:30-11:30 Chapter 6 Applications 6.1 3G (UMTS and WCDMA) 2 Office Hours: BKD 3601-7 Tuesday 14:00-16:00 Thursday 9:30-11:30
More informationSummary of the PhD Thesis
Summary of the PhD Thesis Contributions to LTE Implementation Author: Jamal MOUNTASSIR 1. Introduction The evolution of wireless networks process is an ongoing phenomenon. There is always a need for high
More informationFading & OFDM Implementation Details EECS 562
Fading & OFDM Implementation Details EECS 562 1 Discrete Mulitpath Channel P ~ 2 a ( t) 2 ak ~ ( t ) P a~ ( 1 1 t ) Channel Input (Impulse) Channel Output (Impulse response) a~ 1( t) a ~2 ( t ) R a~ a~
More informationOver the past fifteen years, the bit rates achieved in. Single Carrier FDMA for Uplink Wireless Transmission
Abstract: Single carrier frequency division multiple access (SC- FDMA), a modified form of Orthogonal FDMA (OFDMA), is a promising technique for high data rate uplink communications in future cellular
More informationReceiver Design for Single Carrier Equalization in Fading Domain
65 International Journal of Computer Science & Management Studies, Vol. 12, Issue 02, April 2012 Receiver Design for Single Carrier Equalization in Fading Domain Rajesh Kumar 1, Amit 2, Priyanka Jangra
More informationPage 1. Outline : Wireless Networks Lecture 6: Final Physical Layer. Direct Sequence Spread Spectrum (DSSS) Spread Spectrum
Outline 18-759 : Wireless Networks Lecture 6: Final Physical Layer Peter Steenkiste Dina Papagiannaki Spring Semester 2009 http://www.cs.cmu.edu/~prs/wireless09/ Peter A. Steenkiste 1 RF introduction Modulation
More informationMobile Radio Systems (Wireless Communications)
Mobile Radio Systems (Wireless Communications) Klaus Witrisal witrisal@tugraz.at Signal Processing and Speech Communication Lab, TU Graz Lecture 1 WS2015/16 (6 October 2016) Key Topics of this Lecture
More informationStudy of Performance Evaluation of Quasi Orthogonal Space Time Block Code MIMO-OFDM System in Rician Channel for Different Modulation Schemes
Volume 4, Issue 6, June (016) Study of Performance Evaluation of Quasi Orthogonal Space Time Block Code MIMO-OFDM System in Rician Channel for Different Modulation Schemes Pranil S Mengane D. Y. Patil
More informationInterference management Within 3GPP LTE advanced
Interference management Within 3GPP LTE advanced Konstantinos Dimou, PhD Senior Research Engineer, Wireless Access Networks, Ericsson research konstantinos.dimou@ericsson.com 2013-02-20 Outline Introduction
More informationOutline / Wireless Networks and Applications Lecture 7: Physical Layer OFDM. Frequency-Selective Radio Channel. How Do We Increase Rates?
Page 1 Outline 18-452/18-750 Wireless Networks and Applications Lecture 7: Physical Layer OFDM Peter Steenkiste Carnegie Mellon University RF introduction Modulation and multiplexing Channel capacity Antennas
More informationLecture LTE (4G) -Technologies used in 4G and 5G. Spread Spectrum Communications
COMM 907: Spread Spectrum Communications Lecture 10 - LTE (4G) -Technologies used in 4G and 5G The Need for LTE Long Term Evolution (LTE) With the growth of mobile data and mobile users, it becomes essential
More informationMulti-Carrier Systems
Wireless Information Transmission System Lab. Multi-Carrier Systems 2006/3/9 王森弘 Institute of Communications Engineering National Sun Yat-sen University Outline Multi-Carrier Systems Overview Multi-Carrier
More informationAn OFDM Transmitter and Receiver using NI USRP with LabVIEW
An OFDM Transmitter and Receiver using NI USRP with LabVIEW Saba Firdose, Shilpa B, Sushma S Department of Electronics & Communication Engineering GSSS Institute of Engineering & Technology For Women Abstract-
More informationRadio Interface and Radio Access Techniques for LTE-Advanced
TTA IMT-Advanced Workshop Radio Interface and Radio Access Techniques for LTE-Advanced Motohiro Tanno Radio Access Network Development Department NTT DoCoMo, Inc. June 11, 2008 Targets for for IMT-Advanced
More informationFundamentals of OFDM Communication Technology
Fundamentals of OFDM Communication Technology Fuyun Ling Rev. 1, 04/2013 1 Outline Fundamentals of OFDM An Introduction OFDM System Design Considerations Key OFDM Receiver Functional Blocks Example: LTE
More information2015 The MathWorks, Inc. 1
2015 The MathWorks, Inc. 1 What s Behind 5G Wireless Communications? 서기환과장 2015 The MathWorks, Inc. 2 Agenda 5G goals and requirements Modeling and simulating key 5G technologies Release 15: Enhanced Mobile
More information3G long-term evolution
3G long-term evolution by Stanislav Nonchev e-mail : stanislav.nonchev@tut.fi 1 2006 Nokia Contents Radio network evolution HSPA concept OFDM adopted in 3.9G Scheduling techniques 2 2006 Nokia 3G long-term
More informationReferences. What is UMTS? UMTS Architecture
1 References 2 Material Related to LTE comes from 3GPP LTE: System Overview, Product Development and Test Challenges, Agilent Technologies Application Note, 2008. IEEE Communications Magazine, February
More informationWelcome to SSY145 Wireless Networks Lecture 2
Welcome to SSY145 Wireless Networks Lecture 2 By Hani Mehrpouyan, Department of Signals and Systems, Chalmers University of Technology, hani.mehr@ieee.org Office #6317 1 Copy right 2011 Outline History
More informationIMPROVED CHANNEL ESTIMATION FOR OFDM BASED WLAN SYSTEMS. G.V.Rangaraj M.R.Raghavendra K.Giridhar
IMPROVED CHANNEL ESTIMATION FOR OFDM BASED WLAN SYSTEMS GVRangaraj MRRaghavendra KGiridhar Telecommunication and Networking TeNeT) Group Department of Electrical Engineering Indian Institute of Technology
More informationIEEE Broadband Wireless Access Working Group <
Project IEEE 802.6 Broadband Wireless Access Working Group Title Proposal for Incorporating Single-carrier FDMA into 802.6m Date Submitted Source(s) 2007--07 Jianfeng Kang, Adrian
More informationRadio Access Techniques for LTE-Advanced
Radio Access Techniques for LTE-Advanced Mamoru Sawahashi Musashi Institute of of Technology // NTT DOCOMO, INC. August 20, 2008 Outline of of Rel-8 LTE (Long-Term Evolution) Targets for IMT-Advanced Requirements
More informationPerformance analysis of FFT based and Wavelet Based SC-FDMA in Lte
Performance analysis of FFT based and Wavelet Based SC-FDMA in Lte Shanklesh M. Vishwakarma 1, Prof. Tushar Uplanchiwar 2,Prof.MissRohiniPochhi Dept of ECE,Tgpcet,Nagpur Abstract Single Carrier Frequency
More informationFrequency-Domain Equalization for SC-FDE in HF Channel
Frequency-Domain Equalization for SC-FDE in HF Channel Xu He, Qingyun Zhu, and Shaoqian Li Abstract HF channel is a common multipath propagation resulting in frequency selective fading, SC-FDE can better
More informationProposal for Incorporating Single-carrier FDMA into m
Proposal for Incorporating Single-carrier FDMA into 802.16m IEEE 802.16 Presentation Submission Document Number: IEEE S802.16m-08/100 Date Submitted: 2008-01-18 Source: Jianfeng Kang, Adrian Boariu, Shaohua
More informationLTE-Advanced research in 3GPP
LTE-Advanced research in 3GPP GIGA seminar 8 4.12.28 Tommi Koivisto tommi.koivisto@nokia.com Outline Background and LTE-Advanced schedule LTE-Advanced requirements set by 3GPP Technologies under investigation
More informationSOCP Approach for Reducing PAPR System SC- FDMA in Uplink via Tone Reservation
SOCP Approach for Reducing PAPR System SC- FDMA in Uplink via Tone Reservation Zid Souad 1 and Bouallegue Ridha 2 1 National Engineering School of Tunis, Tunisia zidsouad@gmail.com 2 SUP COM, 6 Tel Laboratory,
More informationOFDM system: Discrete model Spectral efficiency Characteristics. OFDM based multiple access schemes. OFDM sensitivity to synchronization errors
Introduction - Motivation OFDM system: Discrete model Spectral efficiency Characteristics OFDM based multiple access schemes OFDM sensitivity to synchronization errors 4 OFDM system Main idea: to divide
More informationSPECTRUM crowding will continue to increase
Performance Comparison of Modulation Techniques for Underlay Cognitive Radio Transceivers Imtiyaz Khan 1, Poonam Singh 2 Department of Electronics and Communication Engineering, National Institute of Technology,
More informationFractionally Spaced Equalization and Frequency Diversity Methods for Block Transmission with Cyclic Prefix
Fractionally Spaced Equalization and Frequency Diversity Methods for Block Transmission with Cyclic Prefix Yuki Yoshida, Kazunori Hayashi, Hideaki Sakai Department of System Science, Graduate School of
More informationThe 5th Smart Antenna Workshop 21 April 2003, Hanyang University, Korea Broadband Mobile Technology Fumiyuki Adachi
The 5th Smart Antenna Workshop 21 April 2003, Hanyang University, Korea Broadband Mobile Technology Fumiyuki Adachi Dept. of Electrical and Communications Engineering, Tohoku University, Japan adachi@ecei.tohoku.ac.jp
More informationUnveiling Myths about SC-FDMA in TGm
Unveiling Myths about SC-FDMA in TGm IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-08/066 Date Submitted: 2008-01-16 Source: Thierry Lestable, Alain Mourad, Ming
More informationFrom OFDM to LTE. Fabrizio Tomatis (ST-E) Based on slides from Andrea Ancora (ST-E)
From OFDM to LTE Fabrizio Tomatis (ST-E) Based on slides from Andrea Ancora (ST-E) Introduction OFDM History Principles of Wireless Communications OFDM principles Serial-to-parallel conversion Cyclic prefix
More informationEvolution of Cellular Systems. Challenges for Broadband Wireless Systems. Convergence of Wireless, Computing and Internet is on the Way
International Technology Conference, 14~15 Jan. 2003, Hong Kong Technology Drivers for Tomorrow Challenges for Broadband Systems Fumiyuki Adachi Dept. of Electrical and Communications Engineering, Tohoku
More informationPublication of Little Lion Scientific R&D, Islamabad PAKISTAN
FPGA IMPLEMENTATION OF SCALABLE BANDWIDTH SINGLE CARRIER FREQUENCY DOMAIN MULTIPLE ACCESS TRANSCEIVER FOR THE FOURTH GENERATION WIRELESS COMMUNICATION 1 DHIRENDRA KUMAR TRIPATHI, S. ARULMOZHI NANGAI, 2
More informationPlanning of LTE Radio Networks in WinProp
Planning of LTE Radio Networks in WinProp AWE Communications GmbH Otto-Lilienthal-Str. 36 D-71034 Böblingen mail@awe-communications.com Issue Date Changes V1.0 Nov. 2010 First version of document V2.0
More informationPerformance Evaluation of OFDM System with Rayleigh, Rician and AWGN Channels
Performance Evaluation of OFDM System with Rayleigh, Rician and AWGN Channels Abstract A Orthogonal Frequency Division Multiplexing (OFDM) scheme offers high spectral efficiency and better resistance to
More informationSurvey on Effective OFDM Technology for 4G
Survey on Effective OFDM Technology for 4G Kanchan Vijay Patil, 2 R D Patane, Lecturer, 2 Professor, Electronics and Telecommunication, ARMIET, Shahpur, India 2 Terna college of engineering, Nerul, India
More informationECS455: Chapter 5 OFDM
ECS455: Chapter 5 OFDM 1 Dr.Prapun Suksompong www.prapun.com Office Hours: Library (Rangsit) Mon 16:20-16:50 BKD 3601-7 Wed 9:20-11:20 OFDM Applications 802.11 Wi-Fi: a/g/n/ac versions DVB-T (Digital Video
More informationLecture 13. Introduction to OFDM
Lecture 13 Introduction to OFDM Ref: About-OFDM.pdf Orthogonal frequency division multiplexing (OFDM) is well-known to be effective against multipath distortion. It is a multicarrier communication scheme,
More informationField Experiments of 2.5 Gbit/s High-Speed Packet Transmission Using MIMO OFDM Broadband Packet Radio Access
NTT DoCoMo Technical Journal Vol. 8 No.1 Field Experiments of 2.5 Gbit/s High-Speed Packet Transmission Using MIMO OFDM Broadband Packet Radio Access Kenichi Higuchi and Hidekazu Taoka A maximum throughput
More informationA Smart Grid System Based On Cloud Cognitive Radio Using Beamforming Approach In Wireless Sensor Network
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735 PP 48-53 www.iosrjournals.org A Smart Grid System Based On Cloud Cognitive Radio Using Beamforming
More informationChallenges for Broadband Wireless Technology
Challenges for Broadband Wireless Technology Fumiyuki Adachi Electrical and Communication Engineering Graduate School of Engineering, Tohoku University 05 Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8579 Japan
More informationImplementation and Comparative analysis of Orthogonal Frequency Division Multiplexing (OFDM) Signaling Rashmi Choudhary
Implementation and Comparative analysis of Orthogonal Frequency Division Multiplexing (OFDM) Signaling Rashmi Choudhary M.Tech Scholar, ECE Department,SKIT, Jaipur, Abstract Orthogonal Frequency Division
More informationORTHOGONAL frequency division multiplexing (OFDM)
144 IEEE TRANSACTIONS ON BROADCASTING, VOL. 51, NO. 1, MARCH 2005 Performance Analysis for OFDM-CDMA With Joint Frequency-Time Spreading Kan Zheng, Student Member, IEEE, Guoyan Zeng, and Wenbo Wang, Member,
More informationOFDMA Networks. By Mohamad Awad
OFDMA Networks By Mohamad Awad Outline Wireless channel impairments i and their effect on wireless communication Channel modeling Sounding technique OFDM as a solution OFDMA as an improved solution MIMO-OFDMA
More information3GPP Long Term Evolution LTE
Chapter 27 3GPP Long Term Evolution LTE Slides for Wireless Communications Edfors, Molisch, Tufvesson 630 Goals of IMT-Advanced Category 1 2 3 4 5 peak data rate DL / Mbit/s 10 50 100 150 300 max DL modulation
More information3G Evolution HSPA and LTE for Mobile Broadband Part II
3G Evolution HSPA and LTE for Mobile Broadband Part II Dr Stefan Parkvall Principal Researcher Ericsson Research stefan.parkvall@ericsson.com Outline Series of three seminars I. Basic principles Channel
More informationPerformance analysis of MISO-OFDM & MIMO-OFDM Systems
Performance analysis of MISO-OFDM & MIMO-OFDM Systems Kavitha K V N #1, Abhishek Jaiswal *2, Sibaram Khara #3 1-2 School of Electronics Engineering, VIT University Vellore, Tamil Nadu, India 3 Galgotias
More informationFlexible Multi-Numerology Systems for 5G New Radio
Flexible Multi-Numerology Systems for 5G New Radio Ahmet Yazar, Berker Peköz and Hüseyin Arslan Department of Electrical and Electronics Engineering, Istanbul Medipol University, Istanbul, 34810 Turkey
More informationCognitive Radio Transmission Based on Chip-level Space Time Block Coded MC-DS-CDMA over Fast-Fading Channel
Journal of Scientific & Industrial Research Vol. 73, July 2014, pp. 443-447 Cognitive Radio Transmission Based on Chip-level Space Time Block Coded MC-DS-CDMA over Fast-Fading Channel S. Mohandass * and
More informationFrom 2G to 4G UE Measurements from GSM to LTE. David Hall RF Product Manager
From 2G to 4G UE Measurements from GSM to LTE David Hall RF Product Manager Agenda: Testing 2G to 4G Devices The progression of standards GSM/EDGE measurements WCDMA measurements LTE Measurements LTE theory
More informationHistory of the Digital Mobile Radio Systems in NTT & DoCoMo
History of the Digital Mobile Radio Systems in NTT & DoCoMo The University of Electro-Communications Nobuo Nakajima Progress of the Mobile Radio Systems Every 10 years 1 G Analog 2 G Digital 3 G IMT-2000
More informationTHIRD-GENERATION (3G) mobile communications networks. Packet Access Using DS-CDMA With Frequency-Domain Equalization
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 24, NO. 1, JANUARY 2006 161 Packet Access Using DS-CDMA With Frequency-Domain Equalization Deepshikha Garg and Fumiyuki Adachi, Fellow, IEEE Abstract
More informationWireless Medium Access Control and CDMA-based Communication Lesson 16 Orthogonal Frequency Division Medium Access (OFDM)
Wireless Medium Access Control and CDMA-based Communication Lesson 16 Orthogonal Frequency Division Medium Access (OFDM) 1 4G File transfer at 10 Mbps High resolution 1024 1920 pixel hi-vision picture
More informationBroadband OFDM-FDMA System for the Uplink of a Wireless LAN
Broadband OFDM-FDMA System for the Uplink of a Wireless LAN Dirk Galda and Hermann Rohling Department of Telecommunications,TU of Hamburg-Harburg Eißendorfer Straße 40, 21073 Hamburg, Germany Elena Costa,
More informationEffects of Nonlinearity on DFT-OFDM and DWT-OFDM Systems
Effects of Nonlinearity on DFT-OFDM and DWT-OFDM Systems Sivakrishna jajula 1, P.V.Ramana 2 1 Department of Electronics and Communication Engineering, Sree Vidyanikethan Engineering College, TIRUPATI 517
More informationWireless Information Transmission System Lab. Interference 2006/3/9 王森弘. Institute of Communications Engineering. National Sun Yat-sen University
Wireless Information Transmission System Lab. Interference 2006/3/9 王森弘 Institute of Communications Engineering National Sun Yat-sen University Introduction Interference Outline Multiuser Interference
More informationFairness-Capacity Tradeoff for SC-FDMA/SDMA Transmission Scheme
Fairness-Capacity Tradeoff for SC-FDMA/SDMA Transmission Scheme Abolfazl Mehbodniya and Fumiyuki Adachi Graduate School of Engineering, Department Communications Engineering, Tohoku University 6-6- Aza-Aoba,
More informationOrthogonal Frequency Division Multiplexing & Measurement of its Performance
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. 5, Issue. 2, February 2016,
More informationPerformance Analysis of OFDM System in Multipath Fading Environment
Performance Analysis of OFDM System in Multipath Fading Environment Kratika Gupta riyagupta180@yahoo.com Pratibha Nagaich pratibha.nagaich@trubainstitute.ac.in Abstract A detailed study of the OFDM technique
More information802.11ax Design Challenges. Mani Krishnan Venkatachari
802.11ax Design Challenges Mani Krishnan Venkatachari Wi-Fi: An integral part of the wireless landscape At the center of connected home Opening new frontiers for wireless connectivity Wireless Display
More informationSpace Time Block Coding - Spatial Modulation for Multiple-Input Multiple-Output OFDM with Index Modulation System
Space Time Block Coding - Spatial Modulation for Multiple-Input Multiple-Output OFDM with Index Modulation System Ravi Kumar 1, Lakshmareddy.G 2 1 Pursuing M.Tech (CS), Dept. of ECE, Newton s Institute
More informationUNDERSTANDING LTE WITH MATLAB
UNDERSTANDING LTE WITH MATLAB FROM MATHEMATICAL MODELING TO SIMULATION AND PROTOTYPING Dr Houman Zarrinkoub MathWorks, Massachusetts, USA WILEY Contents Preface List of Abbreviations 1 Introduction 1.1
More informationWhat s Behind 5G Wireless Communications?
What s Behind 5G Wireless Communications? Marc Barberis 2015 The MathWorks, Inc. 1 Agenda 5G goals and requirements Modeling and simulating key 5G technologies Release 15: Enhanced Mobile Broadband IoT
More informationPerformance Assessment of PAPR in OFDM System using Single Carrier - FDMA
Performance Assessment of PAPR in OFDM System using Single Carrier - FDMA Arjun Solanki Research Scholar Medicaps Ins. Of Technology & Management Dept. of Electronics & Communication Ratna Gour Sr. Assistant
More informationOFDM AS AN ACCESS TECHNIQUE FOR NEXT GENERATION NETWORK
OFDM AS AN ACCESS TECHNIQUE FOR NEXT GENERATION NETWORK Akshita Abrol Department of Electronics & Communication, GCET, Jammu, J&K, India ABSTRACT With the rapid growth of digital wireless communication
More informationSome Areas for PLC Improvement
Some Areas for PLC Improvement Andrea M. Tonello EcoSys - Embedded Communication Systems Group University of Klagenfurt Klagenfurt, Austria email: andrea.tonello@aau.at web: http://nes.aau.at/tonello web:
More information(LTE Fundamental) LONG TERMS EVOLUTION
(LTE Fundamental) LONG TERMS EVOLUTION 1) - LTE Introduction 1.1: Overview and Objectives 1.2: User Expectation 1.3: Operator expectation 1.4: Mobile Broadband Evolution: the roadmap from HSPA to LTE 1.5:
More informationAdvances in Radio Science
Advances in Radio Science, 3, 1 6, 2005 SRef-ID: 1684-9973/ars/2005-3-1 Copernicus GmbH 2005 Advances in Radio Science Robustness of IFDMA as Air Interface Candidate for Future High Rate Mobile Radio Systems
More informationChannel Estimation by 2D-Enhanced DFT Interpolation Supporting High-speed Movement
Channel Estimation by 2D-Enhanced DFT Interpolation Supporting High-speed Movement Channel Estimation DFT Interpolation Special Articles on Multi-dimensional MIMO Transmission Technology The Challenge
More informationLong Term Evolution (LTE) and 5th Generation Mobile Networks (5G) CS-539 Mobile Networks and Computing
Long Term Evolution (LTE) and 5th Generation Mobile Networks (5G) Long Term Evolution (LTE) What is LTE? LTE is the next generation of Mobile broadband technology Data Rates up to 100Mbps Next level of
More information