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Tradeoff of channel coding and repetition-code spreading in IDMA systems

  • Yang Yan*
  • , Shidong Zhou
  • , Limin Xiao
  • , Xin Su
  • , Jing Wang
  • , Xibin Xu
  • *Corresponding author for this work
  • Tsinghua University

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

Abstract

This paper presents a novel tradeoff of channel coding and repetition-code spreading in IDMA systems which is generalized from traditional DS-CDMA systems. With the help of separation result of coding and spreading given by Veeravalli, we solve the coding-spreading tradeoff problem in the way of concatenating channel coding followed by spreading. In particular, we take two kinds of channel coding, i.e. feed-forward convolutional code and turbo code into consideration in this tradeoff problem. A low-complexity soft rake serial interference cancellation-aided turbo-type multiuser detection is utilized over AWGN channels. Theoretical analysis and Monte Carlo simulations both reveal that under a preset bandwidth expansion, the tradeoff problem favours channel coding over repetition-code spreading in enhancing the system spectral efficiency.

Original languageEnglish
Title of host publicationIET International Communication Conference on Wireless Mobile and Computing, CCWMC 2009
Pages496-499
Number of pages4
Edition562 CP
DOIs
StatePublished - 2009
Externally publishedYes
EventIET International Communication Conference on Wireless Mobile and Computing, CCWMC 2009 - Shanghai, China
Duration: 7 Dec 2009 → 9 Dec 2009

Publication series

NameIET Conference Publications
Number562 CP
Volume2009

Conference

ConferenceIET International Communication Conference on Wireless Mobile and Computing, CCWMC 2009
Country/TerritoryChina
CityShanghai
Period7/12/09 → 9/12/09

Keywords

  • Channel coding
  • IDMA
  • Spectral efficiency
  • Spreading
  • Turbo-type multiuser detection (MUD)

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