| 改进Turbo码与MIMO-OFDM级联的系统性能分析 |
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| 引用本文： | 俞传峰,张翠翠,李李. 改进Turbo码与MIMO-OFDM级联的系统性能分析[J]. 通信技术, 2008, 41(9) |
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| 作者姓名： | 俞传峰 张翠翠 李李 |
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| 作者单位： | 1. 淮北市广电传输中心,安徽,淮北,235000
2. 安徽大学,计算智能与信号处理教育部重点实验室,安徽,合肥,230039 |
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| 摘 要： | 丈中研究了MIMO-OFDM系统中的空时分组编码,并在此系统的基础上与Turbo码进行级联,从而使系统具有分集和抗多径衰落的性能.为了更进一步的减少系统误码率,文中对Turbo码的译码算法进行改进后,与MIMO-OFDM再进行级联.仿真结果表明,改进的Turbo码译码算法与其他译码算法相比,减少了误码率.这种级联后的系统比传统的MIMO系统的性能有较好的改善.
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| 关 键 词： | 空时码 Log-MAP算法 改进的Max-Log-MAP算法 |
Performance Analysis of Improved Concatenated System of Turbo Code and MIMO-OFDM |
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| YU Chuan-feng,ZHANG Cui-cui,LI Li. Performance Analysis of Improved Concatenated System of Turbo Code and MIMO-OFDM[J]. Communications Technology, 2008, 41(9) |
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| Authors: | YU Chuan-feng ZHANG Cui-cui LI Li |
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| Affiliation: | YU Chuan-feng ,ZHANG Cui-cui ,LI Li (Radio , TV Transmission Centre of Huaibei,Huaibei Anhui 235000,China,Key Laboratory of Intelligent Computing & Signal Processing,Ministry of Education,Anhui University,Hefei Anhui 230039,China) |
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| Abstract: | In this paper,the space-time block coding of the MIMO-OFDM system is studied,and on this basis,the system is concatenated with Turbo Codes in order to obtain the diversity and ability of anti-multipath fading.To further reduce BER of the system,the Turbo Code Decoding algorithm is improved,then concatenated with the MIMO-OFDM system.The simulation results show that,as compared with other decoding algorithms,the proposed algorithm can reduce BER.The improved system is better than traditional MIMO systems in ... |
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| Keywords: | MIMO-OFDM |
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