论文标题
均等检查的软取消解码器 - 极性代码
A Soft Cancellation Decoder for Parity-Check Polar Codes
论文作者
论文摘要
极地代码已被选为5G新无线电（NR）控制通道的通道编码方案。具体而言，在上行链路控制信息（UCI）中采用了一种特殊类型的奇偶校验检查（PC极性）代码。在本文中，我们提出了一个奇偶校验 - 检查软性策略（PC-SCAN）算法及其简化版本以解码PC极码。潜在的好处是两个方面。首先，PC扫描可以为PC止饰代码提供软输出，这对于高级涡轮接收器至关重要。其次，解码性能比连续取消（SC）更好。这是由于PC扫描可以利用奇偶校验检查的约束来增强其他信息位对迭代的可靠性。此外，我们描述了一个基于环状转移的注册（CSR）实施“ CSR-SCAN”，以减少硬件成本和延迟，并最小的性能损失。
Polar codes has been selected as the channel coding scheme for 5G new radio (NR) control channel. Specifically, a special type of parity-check polar (PC-Polar) codes was adopted in uplink control information (UCI). In this paper, we propose a parity-check soft-cancellation (PC-SCAN) algorithm and its simplified version to decode PC-Polar codes. The potential benefits are two-fold. First, PC-SCAN can provide soft output for PC-Polar codes, which is essential for advanced turbo receivers. Second, the decoding performance is better than that of successive cancellation (SC). This is due to the fact that parity-check constraints can be exploited by PC-SCAN to enhance the reliability of other information bits over the iterations. Moreover, we describe a cyclic-shift-register (CSR) based implementation "CSR-SCAN" to reduce both hardware cost and latency with minimum performance loss.
