Abstract
In this article, we analyze the performance of a cooperative spatial multiplexing scheme using amplify and forward relays over Rayleigh fading channels. We propose a simple user and relay selection scheme, and demonstrate that gains in spectral efficiencies are possible by such opportunistic selection. Using a bound on the outage performance, we develop a power control mechanism. We develop a bound on the ergodic rate of the proposed scheme. Computer simulation results are presented to demonstrate the performance of the scheme, and to validate the analytical expressions.
Highlights
Several new standards for cellular communication are incorporating amplify and forward (AF) or decode and forward (DF) relays [1]
Cooperative communication protocols have the ability to exploit these relays to harness the spatial features of the network for reliable data transmissions [1,2,3]
Numerical and simulation results we present numerical results based on the derived analytical expressions along with computer simulations, to demonstrate the performance of the considered system
Summary
Several new standards for cellular communication are incorporating amplify and forward (AF) or decode and forward (DF) relays [1]. Assuming Rayleigh fading channels, an analysis of the outage probability and ergodic performance of the user(s) and relay selection scheme-based CMS system is presented. Estimation of the channel gains, and selection of users m , n , and relay l is facilitated by a training phase that precedes the actual data transmission.
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