论文标题
具有低分辨率预编码和PSK调制的多源MIMO系统的迭代检测和解码
Iterative Detection and Decoding for Multiuser MIMO Systems with Low Resolution Precoding and PSK Modulation
论文作者
论文摘要
低分辨率的预码技术最近在无线通信区域引起了很大的关注。本研究的主题是至关重要但几乎没有讨论的文献中，与通道编码结合使用的离散预码。与先前的研究不同，我们提出了三种不同的软检测方法以及一种迭代检测和解码方案，该方案允许使用通道编码与低分辨率预编码结合使用。除了确切的计算外部信息的方法外，我们还提出了两个具有降低计算复杂性的近似值。基于PSK调制和LDPC块代码的数值结果表明，与基于BIT-ERROR速率的常见AWGN通道模型相比，与系统设计相比具有出色的性能。
Low-resolution precoding techniques have gained considerable attention in the wireless communications area recently. Vital but hardly discussed in literature, discrete precoding in conjunction with channel coding is the subject of this study. Unlike prior studies, we propose three different soft detection methods and an iterative detection and decoding scheme that allow the utilization of channel coding in conjunction with low-resolution precoding. Besides an exact approach for computing the extrinsic information, we propose two approximations with reduced computational complexity. Numerical results based on PSK modulation and an LDPC block code indicate a superior performance as compared to the system design based on the common AWGN channel model in terms of bit-error-rate.
