NDLI: Upper and lower bound on signal-to-noise ratio gains for cooperative relay networks

Content Provider	IEEE Xplore Digital Library
Author	Renk, T. Jondral, F.K.
Copyright Year	2009
Description	Author affiliation: Institut für Nachrichtentechnik, Universität Karlsruhe (TH), Germany (Renk, T.; Jondral, F.K.)
Abstract	Cooperative networking as a means of creating spatial diversity is used in order to mitigate the adverse effect of fading in a wireless channel and increase reliability of communications. We investigate signal-to-noise ratio (SNR) gain in wireless cooperative networks. We show that the differential SNR gain in the high data rate regime, which we refer to as SNR gain exponent ζ∞, is independent of the relaying strategy and only depends on the number of transmission phases used for communication. Furthermore, a straight-line upper and lower bound is derived based on geometric considerations. It is shown that the approximation error of the upper bound with respect to the exact SNR gain tends to zero for R → ∞. For the lower bound, the approximation error tends asymptotically to a constant factor δ for R → ∞. Both bounds are the best possible straight-line bounds with respect to absolute error.
Starting Page	652
Ending Page	656
File Size	135064
Page Count	5
File Format	PDF
ISBN	9781424427338
DOI	10.1109/CISS.2009.5054799
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading relaying Performance gain upper bound Probability distribution lower bound Relays Upper bound Diversity reception Approximation error signal-to-noise ratio gain OFDM modulation Telecommunication network reliability cooperative communications Signal to noise ratio
Content Type	Text
Resource Type	Article

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