| FFH-OFDM预编码矩阵的分析和改进 |
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| 引用本文： | 钱璟,张申如. FFH-OFDM预编码矩阵的分析和改进[J]. 电路与系统学报, 2008, 13(6) |
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| 作者姓名： | 钱璟 张申如 |
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| 作者单位： | 1. 解放军理工大学,通信工程学院,江苏,南京,210007
2. 解放军理工大学,理学院,江苏,南京,210007 |
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| 摘 要： | 快速跳频正交频分复用(FFH-OFDM)在常规的OFDM符号中加入快速跳频预编码矩阵(FFH),使其在多径时变的衰落环境下具有良好的抗衰落性能[1].本文首先对循环预编码矩阵带来的噪声半混合进行了分析,并进一步提出了噪声全混合的预编码矩阵,分析了其误码率.仿真结果表明,频率选择性信道下,在高信噪比时全混合较之半混合预编码矩阵进一步提高了OFDM系统抗衰落的能力.
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| 关 键 词： | 快速跳频 正交频分复用 预编码矩阵 噪声混合 |
Analysis and improvement of pre-coding matrix in FFH-OFDM |
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| QIAN Jing,ZHANG Shen-ru. Analysis and improvement of pre-coding matrix in FFH-OFDM[J]. Journal of Circuits and Systems, 2008, 13(6) |
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| Authors: | QIAN Jing ZHANG Shen-ru |
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| Affiliation: | QIAN Jing1,ZHANG Shen-ru2(1.Institute of Communication Engineering,PLA Univ.of Sci.&Tech.,Nanjing 210007,China,2.Institute of Sciences,Nanjing 211101,China ) |
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| Abstract: | FFH-OFDM combines fast frequency hopping(FFH) with regular OFDM symbols, and it shows better performance in anti-fading of time-varying multi-path1.This paper analyses half hybrid noise of the circulant pre-coding matrix, then proposes full hybrid noise pre-coding matrix and discusses its bit error rate.The simulation results show that on frequency-selective channels, full hybrid pre-coding matrix can further improve the BER performance at a high SNR. |
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| Keywords: | FFH OFDM pre-coding matrix hybrid noise |
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