基于TD-SCDMA的追踪合并HARQ性能研究  

PERFORMANCE RESEARCH ON CHASE COMBINING HARQ SCHEME IN TD-SCDMA

作　　者：李鹏[1] 张军[2] 

机构地区：[1]中国石油大学(华东)计算机与通信工程学院,山东东营257061 [2]郑州大学西亚斯国际学院,河南郑州450001

出　　处：《陕西科技大学学报（自然科学版）》2011年第5期78-80,97,共4页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(60572020)

摘　　要：混合自动重复请求技术作为高速下行分组接入系统中的一项关键技术使得数据传输向更可靠的阶段发展.作者阐述了混合自动重传技术的原理,基于TD-SCDMA系统,提出了一种在高速下行分组接入中将追踪合并算法应用于混合自动重传技术的方案,并对不同信道条件和参数下的下行链路性能进行了仿真,结果表明,该方案对于提高下行链路的吞吐量和降低误块率具有较好的效果.As one of an important techniques that used in High Speed Downlink Packet Access（HSDPA）,Hybrid Automatic Repeat Request（HARQ） can increase the reliability sensibly during the transmission service.This paper elaborates the principal of HARQ technology,and an HARQ scheme in which Chase Combining algorithm can be applied is proposed based on TD-SCDMA system.The downlink performance under some conditions such as different channel environment or different control parameters has been simulated.Simulations verify the effectiveness of the Chase Combining HARQ scheme in reducing Block Error Rate（BLER） as well as in increasing throughput.Also,through the experiments it is found that the more retransmission times in Chase Combining,the smaller BLER in the downlink.

关 键 词：高速下行分组接入 追踪合并 混合自动重传请求 吞吐量 

分 类 号：TN914[电子电信—通信与信息系统]