Journals Proceedings

Abstract

In wireless communications, fading is deviation of the attenuation affecting a signal over certain propagation media. The fading may vary with time, geographical position or radio frequency, and is often modeled as a random process. A fading channel is a communication channel comprising fading. Fading mitigation techniques are used to avoid the attenuation presented in a wireless communication system. Adaptive systems are the examples of the fading mitigation techniques. In this paper an adaptive system is simulated using MATLAB, which can switch its transmission and reception characteristics according the bit error rate (BER) between the sent and received data. The system will commute in a certain value that will be established by the user. The characteristics of the system based on the standard wireless communication system. So, an adaptive system was created with two modes: one with only modulation (64QAM) and the other with modulation (64QAM) and coding (Reed Solomon (64,48). The BER value is established by the user, getting a more efficient system according to the necessities.