基于Turbo码的OFDM-IDMA系统干扰消除算法

doi:10.3969/j.issn.1006-2475.2012.09.037

计算机与现代化 ›› 2012, Vol. 1 ›› Issue (9): 147-150.doi: 10.3969/j.issn.1006-2475.2012.09.037

基于Turbo码的OFDM-IDMA系统干扰消除算法

李逸龙1，伍守豪2，张捷1

1.西北工业大学电子信息学院,陕西西安710129；2.深圳清华大学研究院电子信息技术研究所电子设计自动化（EDA）重点实验室,广东深圳518057

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-09-21 发布日期:2012-09-21

Interference Cancellation Algorithm of OFDM-IDMA Systems Based on Turbo-coded

LI Yi-long1, WU Shou-hao2, ZHANG Jie1

1. School of Electronics and Information， Northwestern Polytechnical University， Xi’an 710129, China;2. Key Laboratory of EDA, Research Center of Electronics and Information Technology， Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China

Received:1900-01-01 Revised:1900-01-01 Online:2012-09-21 Published:2012-09-21

摘要/Abstract

摘要： 基于交织多址系统，通过分析串行干扰消除和并行干扰消除两种方式的结构特点和纠错性能，结合两者优势，给出适用于OFDM-IDMA技术的串并结合干扰消除方式。通过构建等效的信道传输模型，在Turbo编码和OFDM条件下，将串并结合干扰消除方式与传统串行干扰消除方式进行性能对比。仿真结果表明，采用串并结合干扰消除技术的OFDM-IDMA系统，能够以较少的纠错性能损失为代价实现低时延多用户通信的目的。
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关键词: 交织多址, 多用户检测, 干扰消除, Turbo码, 正交频分复用

Abstract: This paper provides a comprehensive study of interference cancellation based on Interleave-Division Multiple-Access system. Through the analysis of the structure characteristics and error correction performance of the serial interference cancellation and the parallel interference cancellation, this paper gives a combining scheme that is used for OFDM-IDMA system. By establishing equivalent channel transfer model with the conditions of Turbo Coding and OFDM technology, the combining scheme is compared with the traditional serial interference cancellation in performance. Simulation results demonstrate that the combining scheme in OFDM-IDMA system can achieve low delay on multi-user communication with less loss of error correction performance.
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Key words: IDMA, multi-user detection, interference cancellation, Turbo code, OFDM

李逸龙;伍守豪;张捷. 基于Turbo码的OFDM-IDMA系统干扰消除算法[J]. 计算机与现代化, 2012, 1(9): 147-150.

LI Yi-long;WU Shou-hao;ZHANG Jie. Interference Cancellation Algorithm of OFDM-IDMA Systems Based on Turbo-coded[J]. Computer and Modernization, 2012, 1(9): 147-150.

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基于Turbo码的OFDM-IDMA系统干扰消除算法

Interference Cancellation Algorithm of OFDM-IDMA Systems Based on Turbo-coded

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