Compresión LZW en un sistema de comunicaciones MIMO inalámbrico

Abstract

In this paper a LZW type data compression is implemented, taking advantage of the repeating patterns that arise by modulation of bits of information through the QPSK scheme. The algorithm used is dynamic, because they are computed simultaneously the output codes and the new entries for the formation of a dictionary, which, by having these features is known as semi-adaptive type and they do not need to be known by the receiver. Then the data is remodulated and transmitted through a MIMO wireless channel, where we have implemented the space-time coded proposed by Alamouti as a solution to the effects of fading.The algorithm has been implemented on MATLAB softwareto simulate the system and compare its performance against a traditional scheme.