The classic line-of-sight (LoS) MIMO systems optimize antenna spacings according to the communication distance, and the subchannels of fixed symmetric arrays are sensitive with distance variations. Under array aperture constraints, this letter shows that asymmetric array topologies can provide robust spatial multiplexing over a broad distance range. To reduce the implementation costs and power consumption, we further propose to use one-bit quantization for both transmitting and receiving at the terminal of more antennas. Finally, with evaluations using Bussgang decomposition based mutual information lower bound, the proposed one-bit LoS MIMO system is verified with its significant and robust MIMO gain.

中文翻译：

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灵活通信距离下的一位视距 MIMO 通信

经典的视距 (LoS) MIMO 系统根据通信距离优化天线间距，并且固定对称阵列的子信道对距离变化很敏感。在阵列孔径限制下，这封信表明非对称阵列拓扑可以在很宽的距离范围内提供强大的空间复用。为了降低实现成本和功耗，我们进一步提出在更多天线的终端对发送和接收都使用一位量化。最后，通过使用基于 Bussgang 分解的互信息下界的评估，所提出的一位 LoS MIMO 系统通过其显着且稳健的 MIMO 增益得到验证。