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| Adaptive Power Control Algorithm Based on SIR in Cognitive Radios |
| Cheng Shi-lun;Yang Zhen |
| Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China |
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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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Received: 06 September 2006
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2008, Vol. 30 
