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http://dx.doi.org/10.5515/KJKIEES.2008.19.9.1058

A Study on Adaptive Interference Cancellation System of RF Repeater Using the Grouped Constant-Modulus Algorithm  

Han, Yong-Sik (Department of Electronics Engineering, University of Incheon)
Yang, Woon-Geun (Department of Electronics Engineering, University of Incheon)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.9, 2008 , pp. 1058-1064 More about this Journal
Abstract
In this paper, we proposed a new hybrid interference canceller using the adaptive filter with Grouped CMA(Constant Modulus Algorithm)-LMS(Least Mean Square) algorithm in the RF(Radio Frequency) repeater. The feedback signal generated from transmitter antenna to receiver antenna reduces the performance of the receiver system. The proposed interference canceller has better channel adaptive performance and a lower MSE(Mean Square Error) than conventional structure because it uses the cancellation method of Grouped CMA algorithm. This structure reduces the number of iterations fur the same MSE performance and hardware complexity compared to conventional nonlinear interference canceller. Namely, MSE values of the proposed algorithm were lower than those of LMS algorithm by 2.5 dB and 4 dB according to step sizes. And the proposed algorithm showed fast speed of convergence and similar MSE performance compared to VSS(Variable Step Size)-LMS algorithm.
Keywords
Adaptive Interference Cancellation System; CMA(Constant Modulus Algorithm); LMS(Least Mean Square); RF(Radio Frequency) Repeater;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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