一种改进型的IEEE802.16 HARQ策略

An improved HARQ strategy for IEEE 802.16 protocol

简要介绍了现代通信系统中的一项关键技术HARQ(HybridARQ),并对IEEE802.16d标准的HARQ方案进行了研究,针对传统映射方案中同一符号各个比特间译码可靠性不均一的问题提出了一种基于星座重组的改进型ARQ策略。仿真结果表明改进型的策略优于原始系统。

Hybrid Automatic Repeat request （HARQ） protocol is widely used to provide higher data rate and lower delay. This paper discuss the HARO strategy used in IEEE 802.16 protocol, then an improved HARO strategy based on constellation rearrangement is proposed to enhance the system performance. Simulation shows that the proposed strategy gains a better performance than the origin system.