NDLI: Two-way opportunistic relaying systems: Performance and optimization in Rayleigh fading environments

Content Provider	IEEE Xplore Digital Library
Author	Ben Fredj, K. Ikki, S.S. Aissa, S.
Copyright Year	2013
Description	Author affiliation: Inst. Nat. de la Rech. Sci. (INRS), Univ. of Quebec, Montreal, QC, Canada (Ben Fredj, K.; Ikki, S.S.; Aissa, S.)
Abstract	This paper derives the error probability of a two-way relay-based communication system with opportunistic selection in Rayleigh fading environments. We consider a two-way wireless communication system where two nodes, acting as sources, are unable to exchange data directly and, thus, proceed via L intermediate relay terminals. We investigate a single-relay selection scheme wherein only the best among the L relays is chosen. Since the communication is two-way, the analyzed scheme aims at optimizing the worse performance of the two communication tasks between the pair of users. In particular, we derive closed-form expressions of the probability density functions (PDFs) of the signal-to-noise ratios (SNRs) at both users. This result is then used to derive novel closed-form expressions for the average symbol error probabilities (ASEPs) at both users' nodes. Results on the asymptotic error probability in the high-SNR range completes the performance evaluation part. Then, we provide closed-form expressions for the transmit power optimization at the two source nodes before corroborating the analysis with numerical results.
Starting Page	2250
Ending Page	2254
File Size	154364
Page Count	5
File Format	PDF
ISBN	9781467362351
ISSN	21669570
DOI	10.1109/PIMRC.2013.6666518
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-08
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Error probability Closed-form solutions Rayleigh channels Wireless communication Probability density function Rayleigh fading Two-way communication opportunistic relaying performance analysis symbol error probability power allocation
Content Type	Text
Resource Type	Article

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