A Novel Clipping and Filtering Method Employing Transmit Power Control for OFDM Systems

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This paper proposes a novel clipping and filtering method employing transmit power control to improve the Bit Error Rate (BER) performance in MIMO-OFDM transmission. The feature of the proposed approach is to perform the transmit power control before clipping and filtering to alleviate the BER degradation caused by clipping and filtering. Since the transmit power control to satisfy maximum Signal-to-Noise-plus Distortion Ratio (SNDR) tends to lower the transmit power level especially in a relatively large CNR, the combination of its transmit power control with clipping and filtering surely improves the BER performance while suppressing the out-of-band radiation.