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首页> 外文期刊>Wireless Networks >Combining Pilot-Symbol-Aided Techniques for Fading Estimation and Diversity Reception in Multipath Fading Channels
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Combining Pilot-Symbol-Aided Techniques for Fading Estimation and Diversity Reception in Multipath Fading Channels

机译：结合导频符号辅助技术进行多径衰落信道中的衰落估计和分集接收

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摘要

A novel pilot-symbol-aided (PSA) fading estimation technique that combines the estimates from a conventional PSA technique and a bandwidth-efficient PSA technique to achieve better performances is proposed for digital signals in multipath fading channels. The conventional technique has better performances at low signal-to-noise ratios (SNRs), while the bandwidth-efficient technique is superior at high SNRs. Monte Carlo computer simulation has been used to assess the effects of the proposed combining technique on the bit-error-rate (BER) performances of 16-ary quadrature-amplitude-modulation (16QAM), with and without two-branch diversity reception, in a flat Rayleigh fading channel. Results have shown that the combining technique has the advantages of both of the conventional technique and the bandwidth-efficient technique and is more preferred for use with diversity reception.
机译：对于多径衰落信道中的数字信号，提出了一种新颖的导频符号辅助（PSA）衰落估计技术，该技术将常规PSA技术和带宽有效的PSA技术的估计相结合，以获得更好的性能。常规技术在低信噪比（SNR）时具有更好的性能，而带宽效率高的技术在高SNR时表现优异。蒙特卡罗计算机仿真已被用于评估所提出的组合技术在有和没有两分支分集接收的情况下对16进制正交幅度调制（16QAM）的误码率（BER）性能的影响。平坦的瑞利衰落信道。结果表明，组合技术具有传统技术和带宽有效技术的优点，并且更优选用于分集接收。

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