基于信干比的认知无线电自适应功率控制算法
doi: 10.3724/SP.J.1146.2006.00410
Adaptive Power Control Algorithm Based on SIR in Cognitive Radios
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摘要: 该文以空时编码(STBC) MC-CDMA网络系统为认知无线电通信平台，将一种基于SIR的非合作功率控制博弈算法应用于该认知无线电系统，并根据用户的SIR需求差异，对算法改进设计出新的自适应功率控制博弈算法(CR-NCPCG)。仿真结果表明CR-NCPCG算法以不同用户SIR需求为前提，通过不同用户功率的有效控制，实现了用户公平共享频谱资源的需求。Abstract: Aiming at the discrepancies of the Signal-to-Interference Ratio (SIR) among different users in Cognitive Radios (CR), a Nash game algorithm for SIR-based power control was adopted and a novel adaptive algorithm was designed based on a Space-Time Block Coding MC-CDMA (STBC MC-CDMA) system. Simulation results show that the novel algorithm can regulate their transmitter powers to meet the different SIR requirements effectively and the anti-interference performance of CR system is improved obviously.
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