NDLI: Performance Comparison Analyses of the $$N$$ th Best Relay Selection Schemes Over Independent and Non-identically Distributed Nakagami- $$m$$ Fading Channels

Content Provider	Springer Nature Link
Author	Jia, Xiangdong Yang, Longxiang Zhu, Hongbo
Copyright Year	2013
Abstract	In this work, we study the $$N$$ th best relay selection schemes with the consideration that in some case the best relay is unavailable due to the restriction of practical implementation. With amplify-and-forward relaying protocols, the interested $$N$$ th best relay schemes are investigated over independent and non-identically distributed (i.ni.d) Nakagami- $$m$$ fading channels. For such opportunistic relaying schemes, we first obtain the closed-form expressions to the probability density function (PDF) and cumulative distribution function (CDF) of the instantaneous end-to-end signal-to-noise ratio with appropriate mathematical proof. Then, with the obtained CDF and PDF, three main measurements are investigated as well as the corresponding explicit solutions, $$i.e.$$ , outage probability, average symbol error ratio (SER), and ergodic capacity. At the same time, as a byproduct, the corresponding performance metrics over Rayleigh fading are also derived. Finally, the detailed performance comparison analyses are presented under different values of $$N$$ and different Nakagami- $$m$$ channel fading severity parameters. The numerical results show that the increase of $$N$$ incurs the very severe loss in performance such outage probability, SER, and ergodic capacity. However, the loss in performance can be decreased greatly when the $$N$$ th systems have bigger fading severity factors. The derivations are of significance because the Nakagami- $$m$$ fading spans via the fading severity parameters a wide range of fading scenarios that are typical in realistic wireless relay networks.
Starting Page	1355
Ending Page	1372
Page Count	18
File Format	PDF
ISSN	09296212
Journal	Wireless Personal Communications
Volume Number	75
Issue Number	2
e-ISSN	1572834X
Language	English
Publisher	Springer US
Publisher Date	2013-10-06
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Opportunistic relaying Best relay selection Amplify-and-forward Nakagami- $$m$$ fading Performance analyses Communications Engineering, Networks Signal, Image and Speech Processing Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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