Clipping and filtering is an attractive method for the reduction of the PAPR of OFDM signals before transmission. However, the resulting distortion noise impacts the error rate performance. An iterative receive algorithm employing soft modulation and soft input-soft output (SISO) decoding is presented, and its coded frame error rate (FER) performance over both AWGN and frequency-selective fading channels is evaluated. The performance of an approach with reduced complexity is also shown.
['Peter Zillmann', 'Wolfgang Rave', 'Gerhard Fettweis']
Soft Detection and Decoding of Clipped and Filtered COFDM Signals