DefinePK

Abstract

In this paper, a modified adaptive modulation is proposed to avoid wireless channel fluctuations that affect particular kind of modulations. The proposed approach is used to fit channel fluctuations in regard to several parameters including modulation order, bit error rate, signal to noise ratio and code rate. In addition, a new parameter is proposed to improve modulation performance which is called modulation error ratio. The communication channel fit is achieved by implementing a fuzzy inference system with optimum characteristics for data transmission in aim to obtain higher received data rate with minimal error. The experimental results prove that our approach considerably improves efficiency, performance over noisy channels.