Iterative estimation and cancellation of clipping noise for OFDM signals

Author

Chen, Hangjun ; Haimovich, Alexander M.

Author_Institution

Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA

Volume

7

Issue

7

fYear

2003

fDate

7/1/2003 12:00:00 AM

Firstpage

305

Lastpage

307

Abstract

Clipping is an efficient and simple method to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. However, clipping causes distortion and out-of-band radiation. In this letter, a novel iterative receiver is proposed to estimate and cancel the distortion caused by clipping noise. The proposed method is applied to clipped and filtered OFDM signals. It is shown by simulation that for an IEEE 802.11a typical scenario the system performance can be restored to within 1 dB of the nonclipped case with only moderate complexity increase and with no bandwidth expansion.

Keywords

4G mobile communication; IEEE standards; OFDM modulation; broadband networks; interference suppression; iterative methods; mobile computing; wireless LAN; 4G broadband wireless communications; IEEE 802.11a; OFDM signals; PAPR; clipping noise; clipping noise cancellation; iterative estimation; orthogonal frequency division multiplexing; peak-to-average power ratio; system performance; Additive white noise; Bandwidth; Chromium; Gaussian noise; Noise cancellation; Nonlinear distortion; OFDM; Peak to average power ratio; Signal processing; Signal to noise ratio;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2003.814720

Filename

1214054