| 时间选择性莱斯衰落信道条件下的OFDM系统 |
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| 引用本文： | 刘鹏,张殿富.时间选择性莱斯衰落信道条件下的OFDM系统[J].重庆邮电学院学报(自然科学版),2003,15(2):92-94. |
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| 作者姓名： | 刘鹏 张殿富 |
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| 作者单位： | 武警部队工程学院通信工程系 陕西西安710086
(刘鹏)，武警部队工程学院通信工程系 陕西西安710086(张殿富) |
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| 摘 要： | 给出了时间选择性莱斯无线衰落信道条件下一种64—QAM 0FDM系统的理论论证，并给出了仿真结果。首先，对波形形成技术和TCM编码使AWGN(加性高斯噪声信道)条件下的0FDM系统性能得到改善进行了探讨；其次，讨论了COFDM(编码0FDM调制)系统抗时间选择性莱斯衰落性能。选择有效的信道编码和波形形成方法可以得到系统的理想抗衰落性能。
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| 关 键 词： | OFDM 时间选择性 莱斯衰落信道 波形形成技术 TCM编码 COFDM 正交频分复用 |
An OFDM System in a Time-Selective Rician Fading Channel |
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| LIU Peng,ZHANG Diana-fu.An OFDM System in a Time-Selective Rician Fading Channel[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2003,15(2):92-94. |
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| Authors: | LIU Peng ZHANG Diana-fu |
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| Abstract: | In this paper, the theory and the simulation results of a 64-QAM OFDM system in a time-selective Rician fading channel are presented. First, the results dealing with the improvement of OFDM system performance by waveform shaping and TCM coding in an AWGN channel are reported. Then, coded OFDM system performance in a time-selective Rician fading channel is discussed, and the conclusion is drawn that selecting effective signal coding and waveform shaping method helps obtain ideal anti-fading effect in the system. |
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| Keywords: | QAM OFDM TCM coding waveform shaping technology |
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