Performance of decode-and-forward over Nakagami-m fading channel in cooperative wireless networks

被引：0

作者：

Hikmat, Qabas Ali ^{[1
]}

Dai, Bin ^{[1
]}

Khaji, Rokan ^{[2
]}

Huang, Benxiong ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Elect & Informat Engn, Wuhan 430074, Peoples R China

[2] Diyala Univ, Dept Math, Coll Sci, Diyala 32001, Iraq

来源：

COMPUTERS & ELECTRICAL ENGINEERING | 2016年 / 56卷

基金：

美国国家科学基金会;

关键词：

Decode and forward; Nakagami-m fading; Symbol error rate; Optimal power allocation; POWER ALLOCATION; OUTAGE ANALYSIS; RELAY; DIVERSITY; SYSTEMS;

D O I：

10.1016/j.compeleceng.2015.11.034

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, we analyse the performance of a decode-and-forward (DF) multi-relay system over Nakagami-m fading channels. First, the closed form expression for the symbol error rate (SER) for both M phase shift keying (MPSK) and M quadrature amplitude modulation (MQAM) signals is derived using the concept of moment generating function (MGF) in the high signal to noise ratio (SNR) and determining a tight SER lower bound that converges to the same limit as the theoretical upper bound. Next, by optimising SER, we can identify the optimal amount of power that should be allocated at the source and relay nodes to develop an optimal power allocation (OPA) technique to reduce the SER. The validation of the theoretical analysis is corroborated by the simulation results of the proposed model over Nakagami-m fading compared to the various schemes regarding the performance in terms of the model's achievable SER and OPA. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：171 / 181

页数：11

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