| 多径衰落信道下频域差分检测OFDM系统的误码率分析 |
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| 引用本文： | 宋立军,唐友喜,李少谦.多径衰落信道下频域差分检测OFDM系统的误码率分析[J].通信学报,2005,26(2):9-14. |
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| 作者姓名： | 宋立军 唐友喜 李少谦 |
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| 作者单位： | 电子科技大学,通信抗干扰技术国家级重点实验室,四川,成都,610054 |
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| 基金项目： | 国家自然科学基金资助项目(60272009)，教育部博士点基金资助项目(20020614001) |
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| 摘 要： | 在多径衰落信道条件下，分析了正交频分复用系统中频域差分检测的误码率性能，并进行了仿真验证。分析与仿真结果表明，信道相干时间和相干带宽均影响频域差分检测的误码率性能，信道相干带宽对频域差分检测的影响比信道相干时间的影响更大，频域差分检测适合于多径延迟扩展比较小的信道。
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| 关 键 词： | 无线通信技术 频域差分检测 误码率分析 正交频分复用 相干带宽 相干时间 |
| 文章编号： | 1000-436X(2005)02-0009-06 |
Analysis of BER performance of frequency domain differential detection OFDM system in multipath fading channels |
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| SONG Li-jun,Tang You-xi,Li Shao-qian.Analysis of BER performance of frequency domain differential detection OFDM system in multipath fading channels[J].Journal on Communications,2005,26(2):9-14. |
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| Authors: | SONG Li-jun Tang You-xi Li Shao-qian |
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| Abstract: | Bit error rate (BER) performance of orthogonal frequency division multiplexing (OFDM) system in multipath fading channels using the frequency domain differential detection (FDDD) was analyzed, and the results were evaluated by simulation. The BER performance of FDDD was affected by both coherent bandwidth and coherent time of the channel, but the BER performance of FDDD is more sensitive to the change of coherent bandwidth, FDDD can be used to the multipath fading channel with shorter delay spread. |
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| Keywords: | wireless communications technology frequency domain differential detection analysis of BER orthogonal frequency division multiplexing coherent bandwidth coherent time |
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