Wavelet Entropy Algorithm to Allocate the Extreme Power Peaks in WiMax Systems

Wavelet Entropy Algorithm to Allocate the Extreme Power Peaks in WiMax Systems

Orthogonal Frequency Division Multiplexing

Peak-to-Average Power Ratio

Discrete Wavelet Transform

Entropy

Multiple-Input Multiple-Output

This work proposes a solution to overcome the effect for one of the main drawbacks of these days’ wireless systems, where Multiple-Input Multiple-Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM) combinations has been used. High peak-to-average power ratio (PAPR) arises after the OFDM stage and reduces the performance of the used nonlinear devices. Therefore, a new stage has been imposed between the MIMO and OFDM block. It is based on the entropy meaning of the wavelet transformation to trigger a proposed thresholding criterion and reconstruct the OFDM signal. As a result, the probability of high PAPR appearance will be limited and reduced; a promising result over our recently published work has been conducted; 15-25% extra reduction. This work could be denoted by MIMO-OFDM based on Entropy Wavelet Transform (MO-EWT) systems.
The MO-EWT validity has been checked based on either numerical analysis or conducted simulation based on MATLAB; where 80% improvement of reducing the high PAPR has been achieved over the literature. These results have been reached using the same environment conditions and at additional cost and complexity of the transceivers structure.

Daoud, Omar

Hamarsheh, Qadri

Saraireh, Saleh

International Journal of Interactive Mobile Technologies (iJIM); Vol. 8 No. 4 (2014); pp. 14-19

1865-7923

International Association of Online Engineering (IAOE), Vienna, Austria

2014-10-07

Copyright (c) 2017 Omar Daoud, Qadri Hamarsheh, Saleh Saraireh

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Peer-reviewed Article