面向6G的QC-LDPC码

QC-LDPC Codes for 6G

在各无线通信标准中,如Wi-Fi、WiMAX和5G标准等,都采用了QC-LDPC码作为数据信道的纠错编码方案。QCLDPC码的译码具有较高并行度,非常适合于高数据传输速率的通信系统。目前5G的QC-LDPC码虽然可以满足上行10 Gbps和下行20 Gbps的峰值速率需求。然而,面对未来6G无线移动通信系统对超过100 Gbps峰值速率的迫切需求,现有QC-LDPC编码正面临着前所未有的挑战。鉴于此,基于迭代阈值和距离上限等设计新QC-LDPC码,其最大提升值为1024,对应的基础矩阵兼容5G-BG1,可以兼容5G的译码方法。仿真结果表明,新LDPC码具有更高的译码吞吐量和更低的差错平层性能。

In various wireless communication standards such as Wi-Fi,WiMAX,and 5G,quasi-cyclic low-density parity-check(QC-LDPC)codes are utilized as the error correction coding scheme for data channels.The decoding of QC-LDPC codes offers high parallelism,making it particularly suitable for communication systems with high data transmission rates.Although current 5G QC-LDPC codes meet peak rate requirements of up to 10 Gbps upstream and 20 Gbps downstream,they face unprecedented challenges as future 6G wireless mobile communication systems demand peak rates exceeding 10o Gbps.In response,we propose a new design for QC-LDPC codes based on iterative thresholds and a minimum distance bound,with a lifting size of up to 1024.The base matrix is compatible with 5G-BG1,allowing for compatibility with existing 5G decoding techniques.Simulation results demonstrate that the new LDPC codes offer higher decoding throughput and improved error-floor performance.