Millimeter wave (mmWave) massive multiple-input and multiple-output (mMIMO) is a key technology for increasing the capacity of the future wireless communication systems. However, high-resolution ADCs are costly and infeasible for mmWave mMIMO systems due to high power consumption. Hence, there is a lot of interest in low-resolution ADCs including ultra-low-precision 1-bit ADCs. Such ADCs can be implemented with very low power consumption and hardware cost. However, new channel equalization algorithms are required to compensate the severe nonlinear distortion caused by such low-resolution ADCs. In this work, we analytically derive the maximum likelihood sequence estimation (MLSE) channel equalizer for MIMO systems in frequency-selective fading channels using 1-bit ADCs.

中文翻译：

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在频率选择通道中使用 1 位 ADC 的毫米波大规模 MIMO 的最佳通道均衡器

毫米波 (mmWave) 大规模多输入多输出 (mMIMO) 是提高未来无线通信系统容量的关键技术。然而，由于高功耗，高分辨率 ADC 成本高且不适合毫米波 mMIMO 系统。因此，人们对包括超低精度 1 位 ADC 在内的低分辨率 ADC 很感兴趣。此类 ADC 可以以极低的功耗和硬件成本实现。然而，需要新的通道均衡算法来补偿由此类低分辨率 ADC 引起的严重非线性失真。在这项工作中，我们使用 1 位 ADC 分析推导了频率选择性衰落信道中 MIMO 系统的最大似然序列估计 (MLSE) 信道均衡器。