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本文介绍了两种空-时传输机制,通过在频率选择性衰落信道上使用两根传输天线,来得到全速率和全分集非相干性。第一种机制结合了频域的OFDM微分空-时分组编码;第二种机制采用微分反时空-时分组编码,这样可以保证在不需要当前过采样或多根接收天线的情况下保证盲信道估计。
This article describes two space-time transmission mechanisms that yield full rate and full-diversity incoherence by using two transmit antennas on frequency-selective fading channels. The first scheme combines OFDM differential space-time block coding in the frequency domain. The second uses differential inverse space-time block coding, which ensures that blind channels are guaranteed without the need for the current oversampling or multiple receive antennas estimate.