Abstract
RF channels are affected by time and frequency variant conditions caused by physical impairments that lead to the occurrence of errors during the transmission. These errors are basically of two types: burst errors and random errors. Simulating the behavior of RF channels affected by physical impairments has been subject of several investigations in the past years. Nevertheless, researches generally do not consider the occurrence of both errors at the same time. The current approach to simulate RF channel behavior may lead to imprecisions on the results. In order to deal with this limitation, this paper proposes an hybrid error sequence generator, which is able of generating both burst and random error sequences. The proposed error sequence generator is applied to a case study that aims to evaluate the performance of the channel encoder of the IEEE 802.16 networks. The outcomes of the experiments show that using an hybrid model reflects better the realistic behavior of RF channels.
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