Closed-Form Error Analysis of the Non-Identical Nakagami-m Relay Fading Channel

We present closed-form expressions for the average\ud bit error probability (ABEP) of BPSK, QPSK and M-QAM of\ud an amplify-and-forward average power scaling dual-hop relay\ud transmission, over non-identical Nakagami-m fading channels,\ud with integer values of m. Additionally, we evaluate in closedform\ud the ABEP under sufficiently large signal-to-noise ratio\ud for the source-relay link, valid for arbitrary m. Numerical and\ud simulation results show the validity of the proposed mathematical\ud analysis and point out the effect of the two hops unbalanced\ud fading conditions on the error performance