多进制LDPC码混合重传联合设计与性能分析

Joint Design and Performance Analysis of Non-Binary LDPC Coded Hybrid ARQ

以下一代数字卫星战术数据链通信系统为背景,研究了低复杂度、简单实用多进制低密度校验(LDPC)码与混合自动请求重传(HARQ)技术的联合优化,并且与传统的二进制LDPC码HARQ方案进行了误帧率和吞吐量性能比较。基于C++的链路级仿真结果表明,多进制LDPC码HARQ技术能提供明显的性能改善,尤其是包合并和部分增益型HARQ。此外,多进制LDPC码HARQ在复杂度增加不大的情况下,可提供比二进制LDPC码HARQ更可观的性能增益。

Joint design of non-binary Low Density Parity Check （LDPC） code and Hybrid Automatic Repeat Quest （HARQ） is presented for potential application in future satellite tactical data link system. The and performance comparison is evaluated with binary LDPC coded HARQ scheme in term of frame error rate and throughput. Link level simulation results using C＋＋ show that non-binary LDPC code can be integrated into HARQ protocol successful with significant performance gain, especially for chase combining and partial incremental redundancy schemes. Furthermore, non-binary LDPC coded HARQ outperforms the binary one substantially with reasonable complexity increase.