期刊名称：International Journal of Future Generation Communication and Networking
印刷版ISSN：2233-7857
出版年度：2016
卷号：9
期号：9
页码：77-86
出版社：SERSC
摘要：In this paper, we develop an analytical method in order to derive approximatedaverage symbol error expressionsas tractable and closed formsin amplify-and-forward with relay receiving diversity (AFwRRD) and amplify-and-forward with relay transmission diversity (AFwRTD) systems. In AFwRRD system, each relay receivestwo signals from the source node and the previous relay node and transmitsto the next relay or the destination node. In AFwRTD scheme, it is assumed that each relay can receive a signal from the source node or the previous relay node and transmit to the next relay and the destination node. In the proposed analytical method, we modify a dual-hop relay scheme as a single branch channel over Rayleigh fading channels. Furthermore, it is confirmed that the derived performance expressionscan be applied to both AFwRRD and AFwRTD schemes. Through a numerical simulation, the analyzed performance well concurs the simulation results and it is confirmed that the performance is well analyzed in terms of the diversity order and the signal to noise ratio (SNR)gain for the different number of relays.
关键词：Average symbol error expression;AFwRRD; AFwRTD; Rayleigh fading ;channels; ;diversity order
