Title :
Exact BER analysis of an arbitrary square/rectangular QAM for MRC diversity with ICE in nonidentical Rayleigh fading channels
Author :
Najafizadeh, Laleh ; Tellambura, Chintha
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
In this paper, we derive a general expression for the bit error rate (BER) performance of an arbitrary square/rectangular Gray-coded quadratic amplitude modulation (QAM) scheme. This general formula requires a number of conditional probabilities, which we derive in closed-form for independent and nonidentically distributed (i.n.d.) Rayleigh fading channels, when maximum ratio combining (MRC) with imperfect channel estimation (ICE) is employed. Our general formula determines the exact BER of any arbitrary square/rectangular QAM MRC receiver with ICE in i.n.d. Rayleigh fading channels, avoiding time consuming simulations. In addition, Monte Carlo simulations and analytical results are in excellent agreement.
Keywords :
Gray codes; Monte Carlo methods; Rayleigh channels; channel estimation; error statistics; modulation coding; quadrature amplitude modulation; BER analysis; Gray-coded quadratic amplitude modulation; Monte Carlo simulations; arbitrary square-rectangular QAM; bit error rate; imperfect channel estimation; maximum ratio combining; nonidentical Rayleigh fading channels; AWGN; Additive white noise; Amplitude modulation; Bit error rate; Channel estimation; Diversity reception; Fading; Genetic expression; Ice; Quadrature amplitude modulation;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1494763
