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Probability density function (PDF) of the modulating retro-reflector (MRR) turbulence fading channels is crucial for the performance analysis of MRR communication systems. In this study, closed-form expression for the PDF of normalised MRR free-space optical (FSO) turbulence fading coefficient is obtained first. Moreover, it is applied to the evaluations of the closed-form expressions for average...
In cognitive radio networks, conventional power control algorithms (PCAs) based on instantaneous perfect channel gain may lead to performance degradation in practical systems, since channel uncertainties are inevitable because of quantisation errors and estimation errors. As a result, robustness of the algorithms becomes an important issue. However, traditional robust PCAs with probabilistic models...
Genetic algorithm (GA) is one of the most effective methods to solve combination optimal problem of machine scheduling. The aspect application of GA is limited because limitations of itself. The paper purposes an improved GA with self adaptation selection of crossover probability and mutation probability, and non-equiprobability selection of crossover sites through analyzing the limitation of rareripe...
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