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In this paper, we propose a novel user cooperation framework aimed at optimizing power efficiency in MIMO-OFDM uplink, where cooperation is directed towards minimizing the transmit signal PAPR at all cooperating users. We consider different degrees of cooperation: 1) joint data transmission with PAPR reduction, 2) only joint data transmission and 3) the reference non-cooperative case based on a zero...
We consider a scheme for PAPR reduction based on user cooperation in a single-cell multi-user MIMO-OFDM uplink system. The idea is to utilize the unused space-frequency resources induced by collaborative beamforming to transmit dummy symbols, resulting in a transmit signal with reduced per-antenna peak powers. Traditionally collaborative beamforming has been used to acquire beamforming gain, i.e.,...
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