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In this paper, we consider a dual-hop regenerative relay system consisting of one source node, one destination node and multiple relay nodes. All nodes are equipped with a single antenna except the destination node. We discuss two different relay selection strategies: 1) selection of the best relay; and 2) selection of all reliable relays. We investigate the optimal power allocation (PA) and relay...
In this paper, we consider a relay system with a number of potential relay nodes. We propose several relay assignment protocols to select a relay node to help transmit source data so that the average outage probability of the system is reduced. These protocols include: Optimal-Position relay assignment, Nearest-Optimal-Position relay assignment, and Left (Right)-Nearest-Optimal-Position relay assignment,...
We consider multi-hop decode-and-forward relaying OFDM systems in this paper. All the relay nodes are assumed to be regenerative and working in half-duplex mode. We propose adaptive power allocation (PA) algorithms to maximize the overall system capacity and minimize the system outage probability, respectively. Simulation results show that the proposed algorithms outperform the existing PA algorithms...
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