Cognitive ratio power control method

Abstract

The invention discloses a cognitive ratio power control method. The method improves a revenue function on the basis of a non-cooperative game power control algorithm proposed by D.Goodman, and provides a new power control algorithm based on non-cooperative game; and simultaneously, for improving the searching precision of the power control algorithm, the invention further provides an improved shuffled frog leaping algorithm. The cognitive radio power control method of the invention has higher calculation accuracy, implements effective control on transmitting power of users, and can improve system performance obviously.

Description

technical field [0001] The present invention relates to a cognitive radio technology, in particular to a cognitive radio power control method. Background technique [0002] With the rapid development of information technology, wireless spectrum has become an indispensable and precious resource in modern society. The growth of wireless services and the development of wireless communication systems make spectrum resources increasingly scarce. However, studies have shown that more than 70% of the allocated spectrum resources have not been fully utilized, which obviously contradicts the widespread concern about the shortage of spectrum resources. [0003] Cognitive Radio (CR) is a new smart radio technology. It perceives the state of spectrum usage through spectrum detection technology, and can adaptively adjust signal frequency and transmission power to adapt to changes in the wireless environment and achieve opportunistic Use idle spectrum to improve communication system reli...

AI Technical Summary

Problems solved by technology

The AFSA algorithm has a good global search ability, is insensitive to the initial value and parameter selection, has strong robustness, and is easy to implement, but when the problem scale is too large, the convergence speed slows down in the later stage of evolution

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