We analyze the diversity gain for a distributed antenna subarray employing orthogonal frequency-division multiplexing (OFDM) in millimeter-wave (mm-Wave) massive multiple-input multiple-output (MIMO) systems. We show that the diversity gain depends on the number of transmitted data streams, the number of remote antenna units, and the number of propagation paths between RAUs. Furthermore, we show that by using bit-interleaved coded multiple beamforming (BICMB), one can achieve the maximum diversity gain in a distributed antenna subarray system. The assumption in both scenarios is that the number of the antennas at the transmitter and the receiver are large enough and channel state information (CSI) is known at the transmitter and the receiver.

翻译：我们分析分布式天线子阵列的多样性增益,在毫米波(mm-Wave)大规模多投入多产出(MIMO)系统中,使用正方位频率分流多功能多功能系统(OFDM),我们分析分布式天线子子阵列的多样性增益。我们显示,多样性增益取决于传输数据流的数量、远程天线单位的数量以及RAUs之间的传播路径数量。此外,我们显示,通过使用位隔式编码多波束(BICMB),人们可以在分布式天线次阵列系统中实现最大多样性增益。两种假设的假设是,发射机和接收机的天线数量足够大,发射机和接收机的频道状态信息也十分清楚。