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Resource allocation plays an important role in orthogonal frequency division multiplexing (OFDM) based relaying systems. In this paper, we jointly consider power allocation (PA) and subcarrier pairing (SP) in a relaying system in which a source node sends OFDM signals to a destination node with the help of a full-duplex (FD) relay node. Under individual power constraints at both the source node and...
A multi-carrier one-way relay network is considered, in which a source wishes to send information to a destination via a full-duplex amplify-and-forward relay. We perform power allocation across different subcarriers for the source and the relay, as well as subcarrier pairing at the relay, so as to maximize the achievable sum rate subject to individual power budget constraint at each transmit node,...
Radio spectrum resources are becoming scarce with the increasing demand for multiple users wireless services. Hence, it is an important problem to increase the system potential capacity and coverage for wireless system in future. This paper aims at proposing a relay algorithm based on power control and SINR evaluation for two-hop OFDM cellular networks with fixed relay stations. This algorithm improves...
We consider a two-hop relay link in which orthogonal frequency division multiplexing (OFDM) is used on both hops. Under a joint sum-power constraint, our aim is to allocate power over subcarriers on the two hops such that the instantaneous rate of the relay link is maximized. Ordered subcarrier pairing (OSP) has been proposed in the literature to further improve the relay link rate; however, the optimality...
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