Title :
Soft Detection and Decoding of Clipped and Filtered COFDM Signals
Author :
Zillmann, Peter ; Rave, Wolfgang ; Fettweis, Gerhard
Author_Institution :
Vodafone Chair Mobile Commun. Syst., Technische Univ. Dresden
Abstract :
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.
Keywords :
AWGN channels; OFDM modulation; channel coding; decoding; error statistics; fading channels; filtering theory; modulation coding; signal detection; AWGN channels; FER; clipped COFDM signals; coded frame error rate; error rate performance; filtered COFDM signals; filtering; frequency-selective fading channels; soft detection; soft input-soft output decoding; soft modulation; AWGN; Additive white noise; Error analysis; Filtering; Gaussian noise; Iterative algorithms; Iterative decoding; Modulation coding; OFDM modulation; Peak to average power ratio;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.333
