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The optimum resource allocation in relay networks is used to improve the error performance and increase the energy efficiency. In this paper, a two-dimensional resource allocation, i.e., the energy optimization and location optimization, is carried out based on the average symbol error rate (SER) for the system with and without a direct link. Differential modulation which bypasses the channel estimation...
The optimum resource allocation is an important method to improve the error performance and energy efficiency of wireless relay networks. In this paper, we consider the resource allocation as a two-dimensional optimization problem; that is, the energy optimization and the location optimization. Differential modulation which bypasses the channel estimation at the receiver is investigated using the...
In this paper, we consider a scenario, where all the links in the cooperative system are perturbed by the different random carrier offsets. We have implemented double differential modulation in cooperative communications to overcome the problem of carrier offsets. The performance analysis of decode-and-forward relaying with double differential modulation is performed. We derive an upper bound over...
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