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长期演进系统下行短帧结构及其导频图样设计
谢培浩, 张静, 苏颖
上海师范大学 信息与机电工程学院, 上海 200234
摘要:
在长期演进(LTE)系统下行链路中,使用短帧传输数据可达到降低通信时延的目的.由于缩短帧的长度会造成系统性能的损失,为权衡系统吞吐量和信道估计质量之间的关系,给出一种新的小区专用参考信号(CRS)映射图样.链路级仿真结果表明:所设计的短帧导频图样在满足LTE系统下行吞吐量要求的同时,可提高信道估计质量并降低系统的误码率.
关键词:  低时延  短帧  导频图样  信道估计  吞吐量
DOI:10.3969/J.ISSN.1000-5137.2019.01.007
分类号:
基金项目:
The downlink short frame structure and pilot pattern design of long term evolution system
XIE Peihao, ZHANG Jing, SU Ying
College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China
Abstract:
In this paper,short frame was introduced to transmit data in the long term evolution (LTE) system downlink to reduce communication delay.Since the reduction of the frame length would degrade system performance,a new cell-specific reference signal (CRS) mapping pattern was proposed in order to balance the relationship between the system throughput and the channel estimation quality.Link-level simulation results showed that the proposed method could satisfy system throughput requirement while improving the channel estimation quality and reducing system error rate.
Key words:  low latency  short frame  pilot pattern  channel estimation  system throughput