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Opportunistic beamforming (OBF) is an effective way to increase the multiuser diversity (MUD) of the communication systems; with employing OBF in OFDM system, in addition to the MUD gain, frequency diversity gain is also obtainable. However, the complexity of the OBF-OFDM system is increased and the peak-to-average power-ratio (PAPR) of the OFDM signals must be reduced. The reduction of signals’ PAPR...
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