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

fYear

2007

fDate

22-25 April 2007

Firstpage

1598

Lastpage

1602

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th

Conference_Location

Dublin

ISSN

1550-2252

Print_ISBN

1-4244-0266-2

Type

conf

DOI

10.1109/VETECS.2007.333

Filename

4212761