Study on Dynamic Spectrum Management Model for Interactive Cognitive Radio  

作　　者：MA Zhonggui ZHOU Xianwei WANG Hongbo TU Xuyan 

机构地区：[1]School of Information Engineering, Beijing University of Science and Technology, Beijing 100083, China

出　　处：《Chinese Journal of Electronics》2010年第1期145-149,共5页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No.60773074）, China National Science and Technology Supporting Project of the llth Five Years Plan （No.2006BAJ04B07-2）.

摘　　要：In Interactive cognitive radio networks （ICRN）, secondary usage of spectrum is of competition and conflict, and radio frequency environment is time-varying. In order to realize real-time secondary spectrum usage, we propose architecture based on SoftMan for the ICRN. In this architecture, the ICRN are divided into many coalitions according to geographical locations, utilization degree of spectrum, frequency range and transmission power level. In one coalition, a dynamic spectrum management model based on differential games is proposed, and feedback Nash equilibrium solution to the non-cooperative differential games is given and analyzed. Differential games study a class of decision problems, under which the evolution of the state is described by a differential equation and the players act throughout a time interval. So the model can ensure real-time secondary spectrum usage. The simulation results show that the model can improve efficiency of spectrum utilization, and reflect realistically time-varying radio frequency environment. It also constitutes the theoretical foundation for the spectrum management in a dynamic environment.

关 键 词：Cognitive radio （CR） Differential games Dynamic spectrum management. 

分 类 号：TN929.5[电子电信—通信与信息系统] P641.8[电子电信—信息与通信工程]