Iterative clipping recovery in spatially multiplexed OFDM systems

Clipping and filtering is a well-known technique used at the transmitter side of orthogonalfrequency division multiplexing (ofdm) systems to reduce the peak to average power ratio (papr). in thispaper, the extension of clipping and filtering to spatially multiplexed ofdm systems will be introduced.in the proposed scheme, the channel coding and clipping operations are performed at the transmitterbranches independently. based on this scheme, a receiver is proposed, which is based on the detectionmethod of nulling cancellation (nc). in this method, the layer with the minimum average noise powerover all subcarriers is selected and an iterative method is used to compensate for its clipping noise. then,the effect of the signal of the selected antenna is eliminated from the received vectors.