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Demodulation of 4??4 MIMO signal using single RF

机译:使用单个RF解调4×4 MIMO信号

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Beam switching in the receiving antenna generates replicas in frequency domain, which enables MIMO decoding by using just single RF. It is fascinating to demodulate MIMO signals using single RF, which relieves the volume expansion by MIMO. However, this scheme has not been verified through a test-bed especially in 4??4 MIMO case. This paper presents test results of 4??4 MIMO receiver using single RF chain and beam switching antenna. Test results show the constellation and SNR of decoded 4??4 MIMO signal. When beam switching scheme applies, measured SNR was 12.95 dB on average and 17.85 dB at its maximum. This scheme can apply to massive MIMO system which requires quite a number of antennas and RF circuits.
机译:接收天线中的波束切换会在频域中生成副本,从而仅使用单个RF即可进行MIMO解码。使用单个RF解调MIMO信号非常令人着迷,这减轻了MIMO的体积扩展。但是,该方案尚未通过测试台进行验证,尤其是在4×4 MIMO情况下。本文介绍了使用单个RF链和波束切换天线的4×4 MIMO接收机的测试结果。测试结果显示了解码后的4×4 MIMO信号的星座图和SNR。当使用波束切换方案时,测得的SNR平均为12.95 dB,最大为17.85 dB。该方案可以应用于需要大量天线和RF电路的大规模MIMO系统。

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