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This paper considers an orthogonal frequency division multiplexing (OFDM) based two-way cognitive radio (CR) multiuser multiple relay network. The target is to jointly solve the problem of power allocation, subcarrier assignment, selection of best relay/s, and the sub-carrier pairing at the relay nodes. The aim of the optimization is to maximize the end-to-end sum rate of the network under exclusive...
In this paper, we consider detection for DFT-spread OFDM based 3GPP long term evolution (LTE) uplink transmission, where multiuser multiple-input multiple-output (MUMIMO) technique is employed. We propose an iterative detection method, in which soft interference cancellation based on sorted QR decomposition of frequency domain channel matrix. We show that the new iterative detection has lower computational...
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