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A new power control algorithm is proposed in a cognitive radio system with MC-CDMA. A new utility function that is formed by transmit power and SIR is applied to the algorithm and the static nash equilibrium is obtained for utility function. The nash equilibrium power in new algorithm provides substantial power saving as compared to SIR balancing algorithm and Koskie-Gajic algorithm while reducing...
A unified system model for multirate multiple-input multiple-output (MIMO) multicarrier code division multiple access (MC-CDMA) systems is proposed in this paper. Based on the proposed unified system model, a novel space-frequency minimum mean-squared error based successive interference cancellation receiver (SF-MMSE/SIC) is developed and analyzed. The signal processing of this new detector is jointly...
This paper analyzes the performance of IR-UWB (impulse radio ultra wide-band) with different monocycles in the presence of interference generated by the UMTS/WCDMA systems. The bit error rate is derived for the IR-UWB with n-order derivative Gaussian monocycle in the presence of UMTS/WCDMA interference. The relationship between the anti-UMTS interference ability of IR-UWB and the derivative order...
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