Aspects of Block Interleavers Influence in MIMO Systems Affected by Impulsive Noises

In wireless communications the diversity techniques are used with success to mitigate de perturbations from the transmitted channel. These interferences can be generated by different sources and can be noises or multipath fading effect. The noise can be Gaussian or impulsive with various mathematical models. The impulsive noise degrades sever the signal quality, affecting groups of successive bits in data streaming. Using interleaver this effect can be decreased by rearrange the bit sequence before encoding. In this paper an Alamouti code with interleaver system is proposed to mitigate the impulsive noise with SαS distribution. Alamouti code is a spatial diversity technique, and it has good performances on Additive White Gaussian Noise channel. Data are transmitted on multiple antennas at the emitter and at the receiver. We considered 2x2 system with Binary-Phase-Shift-Keying modulation, Rayleigh fading and two types of interleavers: random and Takeshita-Costello. Both has smaller error rate, but the best is the last one. The results are presented for both cases: impulsive and gaussian noise. The model of impulsive noise is described and analyzed for different values of its parameters. This electronic document is a “live” template and already defines the components of your paper [title, text, heads, etc.] in its style sheet. *CRITICAL: Do Not Use Symbols, Special Characters, Footnotes, or Math in Paper Title or Abstract. (Abstract)