Wireless transmission with cooperation on demand for slow and fast fading environments

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Wireless transmission with cooperation on demand for slow and fast fading environments

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Title: Wireless transmission with cooperation on demand for slow and fast fading environments
Author: Tourki, K.; Alouini, M.S.; Hasna, M.O.
Abstract: Mobile users with single antennas can still take advantage of spatial diversity through repetition based cooperative transmission. In this paper, we consider a scheme in which the relay chooses to cooperate only if the source-destination channel is of an unacceptable quality. In our study, we consider a regenerative relay in which the decision to cooperate is based on a signal-to-noise ratio (SNR) threshold and consider the effect of the possible erroneously detected and transmitted data at the relay. We derive an expression for the end-to-end bit-error rate (BER) of binary phase-shift keying (BPSK) modulation and look at the optimal strategy to minimize this end-to-end BER at the destination for high SNR. Some selected performance results show that computer simulations based results coincide with our analytical results.
URI: http://dx.doi.org/10.1109/PIMRC.2008.4699763
http://hdl.handle.net/10576/10519
Date: 2008

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