Optimum Power and Rate Adaptation for MQAM in Rayleigh Flat Fading With Imperfect Channel Estimation

@article{Olfat2008OptimumPA,
  title={Optimum Power and Rate Adaptation for MQAM in Rayleigh Flat Fading With Imperfect Channel Estimation},
  author={Ali Olfat and Mohammad Shikh-Bahaei},
  journal={IEEE Transactions on Vehicular Technology},
  year={2008},
  volume={57},
  pages={2622-2627}
}
We derive an optimum power and rate adaptation for maximizing the spectral efficiency based on an imperfect channel estimate and subject to average power and instantaneous bit error rate (BER) constraints for multilevel quadrature amplitude modulation (MQAM) over Rayleigh flat-fading channels. The optimal solution is derived for continuous- and discrete-rate adaptation and is expressed in terms of a specific bounded function that is the solution of a nonlinear equation and cannot be expressed… CONTINUE READING
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