Adaptive repetition coding as a pseudorandom issue for WiMedia UWB-payload protection

Abstract

This article describes an encoding strategy through repetition codes for error protecting of the WiMedia payload. Such codes have usually their application rather constrained due to their low transmission rates over low error probabilities. A binary symmetric channel (BSC) was used to evaluate the system performance and a number of simulations were done to assess the influence of the parameters of the coded system. The chief idea is to select the maximum acceptable error probability and fade probability followed by the designing of the repetition coding scheme so as to maximize the transmission rate. Simulations results show that this pseudorandom adaptive technique presents better performance at low error probability, besides offering a tradeoff between rate and error probability.