Jamming Effects on Distributed AF SIMO Wireless Relay Networks under Power Constraints

This paper studies a noncooperative distributed wireless relay system under jamming and no jamming influence. The system under investigation employs amplify-and-forward (AF) tactic at relays, where N-relays forward their received signals from one-source to M-destination nodes. The new proposed optimal amplifying relay diagonal matrices, designed for single-input-multiple-output (SIMO) system, utilizes the minimum mean square error (MMSE) criterion. It also considers power constraints at relay nodes. Impacts of jamming locations, jamming power levels and number of relays on SIMO system, were deeply examined. Evaluations of the system performance, using the derived optimal AF matrices, are presented in terms of bit error rate (BER). Comparisons between a system, that employs the amplifying matrix, and a system that does not are also presented.

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