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In this paper, we consider a wireless-powered cooperative communication network, which consists of a hybrid access-point (AP), a hybrid relay, and an information source. In contrast to the conventional cooperative networks, the source in the considered network is assumed to have no embedded energy supply. Thus, it first needs to harvest energy from the signals broadcast by the AP and/or relay, which...
The paper studies two moving vehicles exchanging messages assisted by another vehicle which is used as a relay. All the vehicle-to-vehicle (V2V) links are modeled as flat double-Rayleigh fading. Based on this particular channel model, the OPA (optimal power allocation) solutions are derived through maximizing source-to-destination channel capacity on the assumptions of amplify-and-forward relaying...
Three new power allocation schemes for a typical amplify-and-forward (AF) cooperative system over independent non-identical Nakagami-m fading channels are proposed in this paper. By analyzing the upper bound of the instantaneous SNR (signal-to-noise-ratio) at the destination using the inequity expression between arithmetic mean and geometric mean, we derive the average SNR and SER (symbol-error-rate)...
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