Turbo Equalization for Clipped and Filtered COFDM Signals

Author

Zillmann, P. ; Rave, Wolfgang ; Fettweis, Gerhard

Author_Institution

Tech. Univ. Dresden, Dresden

fYear

2007

fDate

24-28 June 2007

Firstpage

4335

Lastpage

4340

Abstract

Clipping and filtering is an attractive method for the reduction of the PAPR of OFDM signals before transmission. However, the resulting in-band distortion noise impacts the error rate performance. Since the optimum soft iterative equalization scheme has a prohibitively high computational complexity, we present two equalization algorithms for clipped and filtered COFDM signals with reduced complexity. The coded frame error rate (FER) performance over both AWGN and frequency-selective fading channels is evaluated for typical OFDM system parameters.

Keywords

AWGN channels; OFDM modulation; computational complexity; equalisers; error statistics; fading channels; filtering theory; turbo codes; AWGN channels; clipped-filtered COFDM signals; computational complexity; error rate performance; frame error rate; frequency-selective fading channels; inband distortion noise; soft iterative equalization; turbo equalization; AWGN; Additive white noise; Computational complexity; Error analysis; Filtering; Frequency-selective fading channels; Gaussian noise; Iterative algorithms; OFDM; Peak to average power ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2007. ICC '07. IEEE International Conference on

Conference_Location

Glasgow

Print_ISBN

1-4244-0353-7

Type

conf

DOI

10.1109/ICC.2007.715

Filename

4289386