Title :
Reduction of peak to average power ration of OFDM signals using companding
Author :
Vallavaraj, Athinarayanan ; Stewart, Brain G. ; Harrison, David K. ; McIntosh, Francis G.
Author_Institution :
Caledonian Coll. of Eng.
Abstract :
In this paper, the use of companding as an effective tool for minimizing the peak-to-average power ratio (PAPR) of OFDM signals is presented. The influence of in-band and out-of band noise due to sampling and compression is considered. The bit-error-rate (BER) performance for different companding profiles is also evaluated for transmissions within an AWGN channel. The improvement on BER performance and PAPR is studied for various companding profiles and is compared with the performance due to clipping within the OFDM transmissions
Keywords :
AWGN channels; OFDM modulation; compandors; error statistics; AWGN channel; BER performance; OFDM signal; additive white Gaussian noise; bit-error-rate; orthogonal frequency division multiplexing; out-of band noise; peak-to-average power ratio reduction; Bit error rate; Digital audio broadcasting; Educational institutions; Noise level; Nonlinear distortion; OFDM; Peak to average power ratio; Power engineering and energy; Predistortion; Sampling methods;
Conference_Titel :
Communications Systems, 2004. ICCS 2004. The Ninth International Conference on
Conference_Location :
Singapore, China
Print_ISBN :
0-7803-8549-7
DOI :
10.1109/ICCS.2004.1359359
