Asymptotic performance analysis of SC over arbitrarily correlated Nakagami-m channels

Asymptotic symbol error rate and outage probability are derived for multi-branch selection combining over arbitrarily correlated Nakagami-m fading channels using a new Marcum Q-function approximation. It is shown that asymptotic error rates and outage probability over correlated branches can be obtained by scaling the asymptotic error rates over independent branches with a factor, det^m(√(R)), where det(√(R)) is the determinant of matrix √(R) whose elements are the square root of corresponding elements in the branch power covariance correlation matrix R.