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arXiv 1909.08451eess.SP
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一比特DAC用于mmWave大规模多输入多输出的混合预编码

Hybrid Precoding for mmWave Massive MIMO with One-Bit DAC

Sung Joon Maeng, Yavuz Yapıcı, Ismail Guvenc, Huaiyu Dai, Arupjyoti Bhuyan

摘要:

混合波束成形是实现配备大量天线的节能5G无线网络的关键。低分辨率数据转换器为最先进的5G收发器的能效带来了另一种自由度。在这项工作中,我们考虑了毫米波(mmWave)频谱中的大规模多输入多输出(MIMO)信道的混合预编码器的设计以及一位数模转换器(DAC)和有限量化移相器。特别是,我们提出了一种基于交替优化的预编码器设计,递归计算量化失真的协方差,并相应地更新预编码器。数值结果验证,可实现的速率提高迅速通过迭代,涉及更新的权重矩阵,量化的失真协方差,和相应的预编码器。

英文摘要:

Hybrid beamforming is key to achieving energy-efficient 5G wireless networks equipped with massive amount of antennas. Low-resolution data converters bring yet another degree of freedom to energy efficiency for the state-of-the-art 5G transceivers. In this work, we consider the design of hybrid precoders for massive multiple-input multiple-output (MIMO) channels in millimeter-wave (mmWave) spectrum along with one-bit digital-to-analog converters (DACs) and finite-quantized phase shifters. In particular, we propose an alternating-optimization-based precoder design which recursively computes the covariance of the quantization distortion, and updates the precoders accordingly. Numerical results verify that the achievable rate improves quickly through iterations that involve updates to the weight matrix, distortion covariance of the quantization, and the respective precoders.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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