Generalized selection combining with double threshold and performance analysis

被引:1
|
作者
Xie, Ning [1 ,2 ]
Liu, Zhaorong [1 ,3 ]
Wang, Rui [1 ]
Wang, Hui [1 ]
Lin, Xiaohui [1 ]
机构
[1] Shenzhen Univ, Coll Informat Engn, Shenzhen 518060, Guangdong, Peoples R China
[2] Beijing Univ Posts & Telecommun, State Key Lab Networking & Switching Technol, Beijing 100876, Peoples R China
[3] Zhuhai First Vocat Sch, Zhuhai 519000, Guangdong, Peoples R China
来源
WIRELESS COMMUNICATIONS & MOBILE COMPUTING | 2014年 / 14卷 / 01期
关键词
diversity combining; the average number of path estimation; the average number of combined branches; absolute threshold; output threshold; GSC;
D O I
10.1002/wcm.1228
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, we propose a new diversity combining scheme to save power, which is called as the generalized selection combining with double threshold (DT-GSC). It selects the branch whose SNR is above an input threshold to combine, and this process will keep running until the combined output SNR is larger than an output threshold or until all paths are examined. The values of both thresholds are required to be predetermined on the basis of the practical communication conditions. For comparing the complexity of various combining schemes, we will show the mathematical formulas of the average number of path estimation and the average number of combined branches. Moreover, we will also compare the average bit-error-ratio performance of the proposed DT-GSC with absolute threshold GSC (AT-GSC) and output threshold MRC (OT-MRC). Numerical examples and simulation results show that the proposed DT-GSC leads to a lower complexity than the conventional AT-GSC and OT-MRC while it has a satisfactory performance.Copyright (c) 2012 John Wiley & Sons, Ltd.
引用
收藏
页码:56 / 63
页数:8
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