| 联合迭代解调译码算法的短波FH/OFDM系统的性能分析 |
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| 引用本文： | 熊俊俏,甘良才,朱毅超.联合迭代解调译码算法的短波FH/OFDM系统的性能分析[J].电子与信息学报,2010,32(12):3041-3045. |
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| 作者姓名： | 熊俊俏 甘良才 朱毅超 |
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| 作者单位： | 武汉大学电子信息学院,武汉,430072 |
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| 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。
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| 关 键 词： | 跳频通信 迭代解调译码 非相干序列检测 正交频分复用 |
| 收稿时间： | 2009-12-22 |
Performance Analysis of Short-wave FH/OFDM System Based on Joint Iterative Demodulation and Decoding Algorithm |
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| Xiong Jun-qiao,Gan Liang-cai,Zhu Yi-chao.Performance Analysis of Short-wave FH/OFDM System Based on Joint Iterative Demodulation and Decoding Algorithm[J].Journal of Electronics & Information Technology,2010,32(12):3041-3045. |
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| Authors: | Xiong Jun-qiao Gan Liang-cai Zhu Yi-chao |
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| Affiliation: | School of Wlectronic Information, Wuhan University, Wuhan 430072, China |
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| 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 to 10-5 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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| Keywords: | Frequency Hopping (FH) communication Iterative demodulation and decoding Noncoherent Sequence Detection (NSD) OFDM (Orthogonal Frequency Division Multiplexing) |
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