Accurate BER of Transmitter Antenna Selection/Receiver-MRC over Arbitrarily Correlated Nakagami Fading Channels

Recently, a combined transmitter-selection combining/ receiver-maximal-ratio -combining (TAS/MRC) scheme has been proposed to reduce the complexity of system and retain the diversity advantage. An accurate bit error rate expression is derived for arbitrarily correlated Nakagami fading channels. The Gauss-Laguerre quadrature based numerical method is employed to evaluate the derived expression. For the channels with integer fading parameter, an exact BER expression is obtained. The numerical results illustrate that the derived approximate formula of BER is in excellent agreement with the Monte Carlo results.