Abstract
The effect of spatial correlation on channel capacity of orthogonal space---time block codes (OSTBCs) over multiple-input multiple-output Weibull fading under different adaptive transmission scheme is studied. In this paper, we have derive the moment generating function of the OSTBC received signal-to-noise ratio for integer Weibull parameter $$\beta $$s, considering spatial fading correlation. Utilizing the exact expression of the MGF, the probability density function has been simply achieved, thus enabling the exact evaluation of OSTBC capacity under distinct power and rate allocation schemes. Numerical outcomes illustrate the effect of fading severity $$\left( \beta \right) $$s and fading correlation on the channel capacity and outline the performance differences among the distinctive adaptation schemes. It can be observed that OSTBC system with $$opra$$opra outperform the system with $$tifr$$tifr adaptive scheme.
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