一种新的导频符号辅助下的信道衰落估计方法
A NEW METHOD OF PILOT-SYMBOL-AIDED CHANNEL FADING ESTIMATION
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摘要: 本文提出一种新的导频符号辅助下的信道衰落估计方法。它同时利用导频符号和数据符号进行信道衰落估计和补偿，而不同于传统的信道衰落估计只利用导频符号的信息。此方法具有实现简单，延时小的优点。针对16PSK和16QAM调制方式作了仿真，结果显示导频符号辅助下的16QAM的性能优于16PSK，采用信道衰落估计与相干检测结合的16PSK性能又好于采用差分检测的16PSK的性能。
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关键词:
- 信道估计;导频符号辅助;衰落补偿
Abstract: A new method of pilot-symbol-aided(PSA) channel fading estimation is proposed,which uses the data symbols and the pilot symbols to perform channel fading estimation and fading compensation,but normally only pilot symbols are used to estimate the signal distor-tion.The technique has the advantages of simple implementation and short delay time.The simulation based on 16PSK and 16QAM shows the performance of PSA-16QAM is better than that of PSA-16PSK,and the use of PSA technique can improve the performance relative to the differential detection. -
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