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Performance analysis of complex adaptive IIR notch filters

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3 Author(s)
Nishimura, S. ; Dept. of Electron. & Control Syst. Eng., Shimane Univ., Matsue, Japan ; Hai-Yun Jiang ; Hinamoto, T.

We present a new structure for complex adaptive IIR notch filters which is useful for the rejection of narrowband interference from broadband signals in QPSK communications systems. The proposed structure is based on a gradient algorithm. A performance analysis for convergence properties is developed. It is shown that the convergence speed does not depend on the variance of input white noise. The effects of colored Gaussian noise on convergence speed are analyzed. The results of computer simulation are shown which confirm the theoretical prediction

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Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on

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