Clipping noise mitigating iterative receivers for OFDM

Author

Bibi, Nazia ; Cheetham, Barry

Author_Institution

Sch. of Comput. Sci., Univ. of Manchester, Manchester, UK

fYear

2012

fDate

13-14 Dec. 2012

Firstpage

1

Lastpage

5

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) systems are susceptible to High Power Amplifier (HPA) nonlinearities because of the high Peak to Average Power Ratios (PAPR) in the symbols that are transmitted. Clipping or otherwise limiting these high peaks causes in-band and out-of-band distortion in the signals. This study focuses on clipping noise mitigation using iterative receivers based on Bussgang Noise Cancellation (BNC) and Decision-Aided Reconstruction (DAR). A modified DAR receiver is simulated with oversampled clipping and filtering. Both receivers are compared in terms of bit-error rate (BER) and number of iterations.

Keywords

OFDM modulation; distortion; interference suppression; power amplifiers; radio receivers; BER; BNC; Bussgang noise cancellation; DAR; HPA nonlinearities; OFDM; PAPR; bit-error rate; clipping noise mitigation; decision-aided reconstruction; high power amplifier; in-band distortion; iterative receiver; orthogonal frequency division multiplexing; out-of-band distortion; peak-to-average power ratio; Bit error rate; Filtering; Noise; Peak to average power ratio; Receivers; Time domain analysis; clipping; iterative receiver; orthogonal frequency division multiplexing (OFDM); peak to average power ratio (PAPR);

fLanguage

English

Publisher

ieee

Conference_Titel

Networked Embedded Systems for Every Application (NESEA), 2012 IEEE 3rd International Conference on

Conference_Location

Liverpool

Print_ISBN

978-1-4673-4721-1

Type

conf

DOI

10.1109/NESEA.2012.6474024

Filename

6474024