Estudo da recepção com diversidade espacial em canais sem fio de natureza markoviana.

Abstract

Design systems capable of reliably transmitting information from one point to another, allocating the least amount of resources, has always been a difficult task. The search for new frequency bands and the emergence of new applications offered by the Internet modified how the communications channel is seen. Ways of modeling the channel more dynamically enables a more realistic treatment of the communications channel. In this work, the impact of mode- ling the effects present in the communications channel by means of Markov chains on the bit error probability of the digital modulation scheme M-QAM is evaluate. Furthermore, the influ- ence of the use of the maximum ratio combining (MRC) spatial diversity technique on the error probability for the proposed channel models is evaluated. Additionally, techniques for the esti- mation of parameters of the Markovian noise model described in this work, using the MoM and MS estimators, are evaluated. Additionally, all the analytical results obtained are corroborated by means of Monte Carlo simulations. Finally, the use of Markov chains in fading and noise models a more dynamic and near-real feature.