论文标题
交替的预测方法，用于降低联合预编码和峰值功率比率
Alternating Projections Method for Joint Precoding and Peak-to-Average-Power Ratio Reduction
论文作者
论文摘要
正交频划分多路复用（OFDM）时间域信号表现出高峰值（功率）比（PAR），这需要线性射频链链，以避免误差量幅度（EVM）和带外（OOB）发射的增加。在本文中，我们提出了一种新型的关节降低和预编码算法，该算法在大量多源（MU）多输入多输出（MIMO）无线系统中放松这些线性要求。具体而言，我们开发了一种新颖的交替投影方法，该方法限制了PAR和传递功率的增加，同时抑制了MU干扰。我们为算法提供了理论基础，并为大规模的MU-MIMO-OFDM场景提供了模拟结果。我们的结果表明，在限制发射功率的同时，显着降低了，而不会导致EVM或OOB排放。
Orthogonal frequency-division multiplexing (OFDM) time-domain signals exhibit high peak-to-average (power) ratio (PAR), which requires linear radio-frequency chains to avoid an increase in error-vector magnitude (EVM) and out-of-band (OOB) emissions. In this paper, we propose a novel joint PAR reduction and precoding algorithm that relaxes these linearity requirements in massive multiuser (MU) multiple-input multiple-output (MIMO) wireless systems. Concretely, we develop a novel alternating projections method, which limits the PAR and transmit power increase while simultaneously suppressing MU interference. We provide a theoretical foundation of our algorithm and provide simulation results for a massive MU-MIMO-OFDM scenario. Our results demonstrate significant PAR reduction while limiting the transmit power, without causing EVM or OOB emissions.
