Optimal power allocation for amplify-and-forward in single relay non-cooperative systems |
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Authors: | Wang Shiguo Ji Hong |
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Institution: | Key Lab of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, P.R. China |
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Abstract: | For a single-relay amplify-and-forward (AF) non-cooperative system, an optimal power proportion between source and relay is considered. Aiming to minimize end-to-end bit error rate (BER) and maximize attainable rate, both large-scale path loss and small-scale Rayleigh fading are taken into account. A closed form expression to allocate power in optimal proportion at source is obtained. Simulation results show that the proposed scheme to distribute power can minimize BER under any channel conditions. |
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Keywords: | amplify-and-forward (AF) optimal power allocation cooperative communication wireless relay |
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