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Author Soriano, R.D. ♦ Marciano, J.S.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2006
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Distortion ♦ Peak to average power ratio ♦ Bit error rate ♦ Parity check codes ♦ Turbo codes ♦ OFDM ♦ AWGN ♦ Degradation ♦ Error correction ♦ Additive white noise
Abstract Signal distortion techniques namely, peak windowing and clipping, are methods to address the high peak-to-average power ratio (PAPR) problem on OFDM systems. However, signal distortion technique introduces in-band and out-of-band distortion which may undermine the gain given by an error control code. This study investigated the effect of signal distortion techniques on the bit error rate (BER) performance of turbo and low density parity check (LDPC) coded orthogonal frequency division multiplexing (COFDM) communication system. It was found that LDPC-COFDM performs better than the turbo coded OFDM (T-COFDM) in an AWGN and exponentially decaying Rayleigh fade channel. Upon the application of signal distortion techniques, reduction in the coding gain was experienced by the LDPC-COFDM and T-COFDM. However, only a minimal loss was experienced by T-COFDM unlike the LDPC-COFDM. Thus, the effect of signal distortion to the T-COFDM system's performance is a good trade off, considering the reduced PAPR level
ISBN 1424405483
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2006-11-14
Publisher Place China
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 4.28 MB
Page Count 4
Starting Page 1
Ending Page 4


Source: IEEE Xplore Digital Library