Performance Analysis of Fixed Gain Relaying Systems in Nakagami-m Fading Channels

ZHAO Rui; LI Chun-guo; WANG Hai-rong; YANG L

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Performance Analysis of Fixed Gain Relaying Systems in Nakagami-m Fading Channels

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- Performance Analysis of Fixed Gain Relaying Systems in Nakagami-m Fading Channels
- Acta Electronica Sinica Vol. 39, Issue 1, Pages: 162-167(2011)
- 作者机构：
  
  1. 东南大学信息科学与工程学院,江苏,南京,210096
  2. 华侨大学信息科学与工程学院,福建,泉州,362021
  3. 东南大学信息科学与工程学院江苏南京,210096
  4. 华侨大学信息科学与工程学院福建泉州,362021
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.5
- Published：2011
- 稿件说明：
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ZHAO Rui, LI Chun-guo, WANG Hai-rong, et al. Performance Analysis of Fixed Gain Relaying Systems in Nakagami-m Fading Channels[J]. Acta Electronica Sinica, 2011, 39(1): 162-167.
DOI：

ZHAO Rui, LI Chun-guo, WANG Hai-rong, et al. Performance Analysis of Fixed Gain Relaying Systems in Nakagami-m Fading Channels[J]. Acta Electronica Sinica, 2011, 39(1): 162-167. DOI：

摘要

在Nakagami-

衰落信道下

分析了两跳固定增益放大转发中继通信系统的性能.首先采用基于概率密度函数(PDF)的性能分析法推导了无协作分集时系统的中断概率和平均误符号率(ASER)的闭合表达式

然后采用基于矩生成函数(MGF)的方法推导了有协作分集时系统的中断概率和ASER表达式以及接收信噪比的

阶矩的闭合表达式.仿真结果显示

所推导的闭合表达式与数值仿真结果吻合良好

协作分集和较大的

值可提升系统性能

中继前后两跳的信道质量对系统性能的影响并不相同.

Abstract

The performance of dual-hop communication systems with fixed gain amplify-and-forward relay is analyzed over non-identical Nakagami-

fading channel.First

Closed-form expressions for outage probability and average symbol error rate (ASER) are derived based on probability density function (PDF) method for the system without cooperative diversity.Then

the expressions for outage probability and ASER and closed-form expression of the

-th moment of received SNR are derived based on moment generating function (MGF) method for the system with cooperative diversity.Simulation results show that

the derived expressions match well with the numerical simulations

and cooperative diversity and larger

values are both of benefit to the improvement of system performance

and the channel quality of the first

hop and that of the second hop have different effects on the system performance.

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