Optimum discrete-power adaptive QAM scheme for Rayleigh fading channels

Abstract

In this letter, the utilization of a finite number of power levels per constellation in adaptive QAM schemes for flat fading channels is analyzed. Assuming a maximum target BER, the optimum switching thresholds in order to maximize the spectral efficiency are found for Rayleigh fading. Both analysis and simulation results show that a small number of power levels per constellation allows to obtain a good compromise between high spectral efficiency and low feedback information rate.

DOI: 10.1109/4234.935742

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@article{Paris2001OptimumDA, title={Optimum discrete-power adaptive QAM scheme for Rayleigh fading channels}, author={Jos{\'e} F. Paris and M. Carmen Aguayo-Torres and Jos{\'e} T. Entrambasaguas}, journal={IEEE Communications Letters}, year={2001}, volume={5}, pages={281-283} }