This letter investigates the feasibility of the quantized digital polar transmitter architecture in a downlink multi-user massive multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) system, where a low amplitude resolution and a moderate phase resolution are utilized. We derive a lower bound on the average sum-rate achievable with Gaussian signaling inputs and linear precoding by a simple diagonal approximation for the quantization distortion. The analysis and simulations demonstrate that the quantized polar transmitter can enable excellent performance in terms of average sum-rate throughput, symbol error rate (SER), and out-of-band (OOB) emission level, thus providing an attractive option for the traditional Cartesian architecture.

中文翻译：

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用于高能效大规模 MIMO 系统的量化极性发射机


这封信研究了量化数字极化发射机架构在下行链路多用户大规模多输入多输出正交频分复用（MIMO-OFDM）系统中的可行性，其中利用了低幅度分辨率和中等相位分辨率。我们通过量化失真的简单对角线近似，得出了使用高斯信令输入和线性预编码可实现的平均和速率的下限。分析和仿真表明，量化极化发射机在平均总速率吞吐量、误码率（SER）和带外（OOB）发射水平方面具有出色的性能，从而为传统的发射机提供了一个有吸引力的选择。笛卡尔建筑学。