Bit error rate for rectangular QAM with arbitrary constellation mapping in Nakagami-m channels
We present closed-form expressions for the bit error rate (BER) of rectangular quadrature amplitude modulaton (QAM) in Nakagami-m fading channels. The presented formulas, which are valid for arbitrary bits-to-symbols mapping, thus may be used when non-Gray mapping is employed, are particularly useful in the low signal-to-noise ratio (SNR) range and/or for small values of the parameter m. The advantage of the proposed expressions over the known bounding techniques is illustrated through numerical simulations. Copyright (C) 2006 John Wiley & Sons, Ltd.
bit error rate qam nakagami-m fading performance evaluation