联合迭代解调译码算法的短波FH/OFDM系统的性能分析

熊俊俏; 甘良才; 朱毅超

doi:10.3724/SP.J.1146.2009.01629

联合迭代解调译码算法的短波FH/OFDM系统的性能分析

doi: 10.3724/SP.J.1146.2009.01629

基金项目:

国家自然科学基金(60372056，60672043)资助课题

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出版历程
- 收稿日期: 2009-12-22
- 修回日期: 2010-06-19
- 刊出日期: 2010-12-19

Performance Analysis of Short-wave FH/OFDM System Based on Joint Iterative Demodulation and Decoding Algorithm

摘要

摘要: 该文提出了一种基于联合迭代解调译码的短波跳频OFDM系统，并在其接收端采用非相干序列检测和迭代译码相结合的联合迭代解调译码算法。该联合迭代解调译码算法可以降低差分检测时所导致的性能损失，同时，也可以提高短波FH/OFDM系统的可靠性。仿真结果表明：该方法可使其系统在短波信道中获得较好的比特误码性能，当Eb/N0＝5.5 dB时，其系统的比特误码率可达到10-5，数据传输速率达到8.912 kb/s，显然，该联合迭代译码解调算法是适合短波FH/OFDM系统的。
- 跳频通信 /
- 迭代解调译码 /
- 非相干序列检测 /
- 正交频分复用
Abstract: A short-wave FH/OFDM system based on joint iterative demodulation and decoding is proposed. By combining the advantage of NSD technique and iterative demodulation and decoding, the method could compensate the SNR loss caused by differential detection and improve the reliability of short-wave communication system. Numeric simulation results show that the proposed method could effectively improve the system BER performance, while it reachs to10-5 when SNR is 5.5 dB and data rate reachs to 8.192 kbps. Joint iterative demodulation and decoding is a practical algorithm for FH/OFDM systems.

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