期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2015
卷号：4
期号：10
页码：14839-14843
DOI：10.18535/ijecs/v4i10.36
出版社：IJECS
摘要：In the OFDM communication system the main disadvantage factor is Peak Average to Power Ratio (PAPR) which limitsthe performance of the overall system. To limit this factor in the OFDM system there are so many techniques are there, depends onthe nature of the system like clipping, Partial transmission, Selective mapping, Companding transform etc, in these techniquecompanding technique is the a simple methodology to compress or compand the input signal based on the inflection points to reducethe PAPR in the system, while decompander is the technique in the receiver to expand the companded signal from the transmittersection in the OFDM. The piecewise linear companding is based on the linear equations to compress the OFDM sequence wherethe companding distortion should considered, in this paper we present a efficient companding based on the piecewise linearequations. The whole system considered under ETU channel model. The simulation results show that a reduced PAPR and optimalBER rate of the OFDM system
关键词：Piecewise linear companding; OFDM; PAPR; Power; Gain; AWGN channel
