Fast convergence and reduced complexity receiver design for LDS-OFDM system

Lei Wen; Razieh Razavi; Pei Xiao; Muhammad Ali Imran

doi:10.1109/PIMRC.2014.7136297

Fast convergence and reduced complexity receiver design for LDS-OFDM system

Lei Wen
, Razieh Razavi
, Pei Xiao
, Muhammad Ali Imran

University of Surrey

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

9 Scopus citations

Abstract

Low density signature for OFDM (LDS-OFDM) is able to achieve satisfactory performance in overloaded conditions, but the existing LDS-OFDM has the drawback of slow convergence rate for multiuser detection (MUD) and high receiver complexity. To tackle these problems, we propose a serial schedule for the iterative MUD. By doing so, the convergence rate of MUD is accelerated and the detection iterations can be decreased. Furthermore, in order to exploit the similar sparse structure of LDS-OFDM and LDPC code, we utilize LDPC codes for LDS-OFDM system. Simulations show that compared with existing LDS-OFDM, the LDPC code improves the system performance.

Original language	English
Title of host publication	2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	918-922
Number of pages	5
ISBN (Electronic)	9781479949120
DOIs	https://doi.org/10.1109/PIMRC.2014.7136297
State	Published - 25 Jun 2014
Externally published	Yes
Event	25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014 - Washington, United States Duration: 2 Sep 2014 → 5 Sep 2014

Publication series

Name	IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume	2014-June
ISSN (Print)	2166-9570
ISSN (Electronic)	2166-9589

Conference

Conference	25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014
Country/Territory	United States
City	Washington
Period	2/09/14 → 5/09/14

Keywords

LDS-OFDM
forward error correction
iterative multiuser detection
serial schedule

Access to Document

10.1109/PIMRC.2014.7136297

Cite this

Wen, L., Razavi, R., Xiao, P., & Imran, M. A. (2014). Fast convergence and reduced complexity receiver design for LDS-OFDM system. In 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014 (pp. 918-922). Article 7136297 (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; Vol. 2014-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PIMRC.2014.7136297

Wen, Lei ; Razavi, Razieh ; Xiao, Pei et al. / Fast convergence and reduced complexity receiver design for LDS-OFDM system. 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 918-922 (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC).

@inproceedings{5d9efaf92afe411788ea37d032412f18,

title = "Fast convergence and reduced complexity receiver design for LDS-OFDM system",

abstract = "Low density signature for OFDM (LDS-OFDM) is able to achieve satisfactory performance in overloaded conditions, but the existing LDS-OFDM has the drawback of slow convergence rate for multiuser detection (MUD) and high receiver complexity. To tackle these problems, we propose a serial schedule for the iterative MUD. By doing so, the convergence rate of MUD is accelerated and the detection iterations can be decreased. Furthermore, in order to exploit the similar sparse structure of LDS-OFDM and LDPC code, we utilize LDPC codes for LDS-OFDM system. Simulations show that compared with existing LDS-OFDM, the LDPC code improves the system performance.",

keywords = "LDS-OFDM, forward error correction, iterative multiuser detection, serial schedule",

author = "Lei Wen and Razieh Razavi and Pei Xiao and Imran, \{Muhammad Ali\}",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.; 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014 ; Conference date: 02-09-2014 Through 05-09-2014",

year = "2014",

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doi = "10.1109/PIMRC.2014.7136297",

language = "English",

series = "IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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Wen, L, Razavi, R, Xiao, P & Imran, MA 2014, Fast convergence and reduced complexity receiver design for LDS-OFDM system. in 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014., 7136297, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, vol. 2014-June, Institute of Electrical and Electronics Engineers Inc., pp. 918-922, 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014, Washington, United States, 2/09/14. https://doi.org/10.1109/PIMRC.2014.7136297

Fast convergence and reduced complexity receiver design for LDS-OFDM system. / Wen, Lei; Razavi, Razieh; Xiao, Pei et al.
2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 918-922 7136297 (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; Vol. 2014-June).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Fast convergence and reduced complexity receiver design for LDS-OFDM system

AU - Wen, Lei

AU - Razavi, Razieh

AU - Xiao, Pei

AU - Imran, Muhammad Ali

PY - 2014/6/25

Y1 - 2014/6/25

N2 - Low density signature for OFDM (LDS-OFDM) is able to achieve satisfactory performance in overloaded conditions, but the existing LDS-OFDM has the drawback of slow convergence rate for multiuser detection (MUD) and high receiver complexity. To tackle these problems, we propose a serial schedule for the iterative MUD. By doing so, the convergence rate of MUD is accelerated and the detection iterations can be decreased. Furthermore, in order to exploit the similar sparse structure of LDS-OFDM and LDPC code, we utilize LDPC codes for LDS-OFDM system. Simulations show that compared with existing LDS-OFDM, the LDPC code improves the system performance.

AB - Low density signature for OFDM (LDS-OFDM) is able to achieve satisfactory performance in overloaded conditions, but the existing LDS-OFDM has the drawback of slow convergence rate for multiuser detection (MUD) and high receiver complexity. To tackle these problems, we propose a serial schedule for the iterative MUD. By doing so, the convergence rate of MUD is accelerated and the detection iterations can be decreased. Furthermore, in order to exploit the similar sparse structure of LDS-OFDM and LDPC code, we utilize LDPC codes for LDS-OFDM system. Simulations show that compared with existing LDS-OFDM, the LDPC code improves the system performance.

KW - LDS-OFDM

KW - forward error correction

KW - iterative multiuser detection

KW - serial schedule

UR - https://www.scopus.com/pages/publications/84944326388

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DO - 10.1109/PIMRC.2014.7136297

M3 - Conference contribution

AN - SCOPUS:84944326388

T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

SP - 918

EP - 922

BT - 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014

PB - Institute of Electrical and Electronics Engineers Inc.

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Y2 - 2 September 2014 through 5 September 2014

ER -

Wen L, Razavi R, Xiao P, Imran MA. Fast convergence and reduced complexity receiver design for LDS-OFDM system. In 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014. Institute of Electrical and Electronics Engineers Inc. 2014. p. 918-922. 7136297. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC). doi: 10.1109/PIMRC.2014.7136297

Fast convergence and reduced complexity receiver design for LDS-OFDM system

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Keywords

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