一种基于HARQ反馈的切换合并发送分集技术  

A Switched Combining Transmit Diversity based on HARQ

作　　者：金爽[1] 潘鸣宇[1] 杨鸿文[1] 程卫东[2] 

机构地区：[1]北京邮电大学北京,100876 [2]中国移动通信研究院,北京100053

出　　处：《通信技术》2008年第12期7-9,共3页Communications Technology

摘　　要：本文提出了一种与HARQ相结合的天线选择发送分集方案。该方案利用HARQ的ACK/NAK信号作为天线选择指示,如果反馈ACK则继续使用当前天线,否则切换到下一个天线。仿真表明,在低速情况下,新方案相比单天线系统有显著的分级增益,与传统的选择分集相比,能节约反馈,简化系统,同时性能损失不大。This paper proposes a new transmit diversity scheme combined with HARQ. The scheme utilizes the ACK/NAK message as the antenna selection indicator, namely, if an ACK is received, the transmitter would stay at the current antenna and an NAK would force the antenna to switch. Simulation results show that the proposed scheme has obvious diversity gain over single antenna at low velocity environment. Compared with classical antenna selection schemes, this scheme can save the feedback load, simplify the system and be small in performance loss is small.

关 键 词：切停合并 HARQ 误帧率 吞吐量 

分 类 号：TN919.1[电子电信—通信与信息系统]