| AOFDM在频率选择性衰落信道下的性能分析 |
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| 引用本文： | 何燕,胡捍英,周山. AOFDM在频率选择性衰落信道下的性能分析[J]. 通信技术, 2003, 0(11): 34-36 |
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| 作者姓名： | 何燕 胡捍英 周山 |
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| 作者单位： | 解放军信息工程大学,郑州,450002 |
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| 摘 要： | 从理论上分析了采用速率自适应策略的OFDM(AOFDM)传输模型在频率选择性信道下性能表现;并给出频谱效率及平均误码率的理论公式。结果表明,采用自适应调制能够在保证达到目标误码率的前提下提高频谱效率,提高的幅度与所选择的调制等级数以及子载波数有关。这对系统设计很有帮助。
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| 关 键 词： | 正交频分复用 自适应调制 误码率 |
| 修稿时间： | 2003-05-02 |
Performance of Adaptive OFDM over Frequency Selective Fading Channel |
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| He Yan Hu Hanying Zhou Shan. Performance of Adaptive OFDM over Frequency Selective Fading Channel[J]. Communications Technology, 2003, 0(11): 34-36 |
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| Authors: | He Yan Hu Hanying Zhou Shan |
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| Abstract: | This paper theoretically studies the performance of a constant-po wer variable-rate OFDM scheme over frequency selective fading channel. New stat istical method is used to analyze its spectral efficiency and average BER (bit e rror rate) and the theoretical formulation is given. Results show that the perfo rmance is dramatically affected by the number of modulation stages and that of t he subcarriers. It is very useful to the system design. |
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| Keywords: | OFDM adaptive modulation BER |
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