Power Control for Cognitive Radio Base on Game Theory
A new technology to achieve the spectrum efficiency usage is cognitive radio. This paper we study the power control of the transmitter in basic cognitive cycle. And game theory is applied for modeling. Non-cooperative power control game which is created by D. Goodman is used; however, we introduce a new sigmoid efficiency function only related with users SIR. Its advantage is obvious that regardless of the modulation of users RAT, which is very suitable for cognitive radio system. Specifically, we also modify the traditional pricing function with an addition of path gain. It is proved that the new utility function will bring an obvious improvement comparing to NPG and NPGP used in traditional CDMA systems.
cognitive radio game theory power control sigmoid efficiency function pricing function1
Wang Xia Zhu Qi
Nanjing University of Posts and Telecommunications, Nanjing 210003, P.R.China
国际会议
上海
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）