Steady-State Analysis of Complex Adaptive IIR Notch Filter and Its Application to QPSK Communication Systems
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概要
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In this paper, we present a method to analyze the steady-state performance of a complex coefficient adaptive IIR notch filter which is useful for the rejection of multiple narrow-band interferences from broad-band signals in quadrature phase shift keying (QPSK) spread-spectrum communication systems. The adaptive notch filter based on the simplified gradient algorithm is considered. Analytical expressions have been developed for the conditional mean and variance of notch filter output. The signal-to-noise ratio improvement factor is also obtained from which the validity of the use of the notch filter can be concluded. Finally, the results of computer simulations are shown which confirm the theoretical predictions.
- 2002-05-01
著者
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JIANG Haiyun
The authors are with the Faculty of Engineering, Hiroshima University
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NISHIMURA Shotaro
The author is with the Department of Electronic and Control Systems Engineering, Shimane University
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HINAMOTO Takao
The authors are with the Faculty of Engineering, Hiroshima University
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Jiang Haiyun
The Authors Are With The Faculty Of Engineering Hiroshima University
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Nishimura Shotaro
The Author Is With The Department Of Electronic And Control Systems Engineering Shimane University
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Hinamoto Takao
The Authors Are With The Faculty Of Engineering Hiroshima University
関連論文
- Steady-State Analysis of Complex Adaptive IIR Notch Filter and Its Application to QPSK Communication Systems
- Steady-State Analysis of a Simplified Lattice-Based Adaptive IIR Notch Filter (Special Section of Papers Selected from ITC-CSCC'99)