Amount of Correlation Function-based Diversity ...

Improve the reliability in terms of diversity in wireless communications using MIMO systems is crucial as MIMO channels is spatially and temporally correlated . The impact of correlations on space-time codes results in the decrease their performance in terms of bit-error rate (BER) .Hence, it is reasonable to seek for metrics which provide the measure of fading correlations. In This paper we investigate the measure of correlation in spatial domain by using the amount of correlation as a metric. High (resp. low) amount of correlation value means low (resp. high) diversity and therefore the knowledge of the variation of this metric lets to foresee the performance analysis of MIMO channels. By considering the one-ring scattering model as the wireless communication Channel, we first compute the amount of correlation function and then show that a wise tradeoff between parameters can be envisaged in order to minimize MIMO channel correlation .AS application, MIMO system with two transmit antenna and two receive antenna (2x2 MIMO) with orthogonal space-time block (OSTBC) are implemented with high reliability.