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研究生:高再生
研究生(外文):Zai-Sheng Gao
論文名稱:使用多項式濾波器之一新型貝森等化器
論文名稱(外文):A New Bayesian Equalizer Using Polynomial Filters
指導教授:鄭木火
指導教授(外文):Mu-Huo Cheng
學位類別:碩士
校院名稱:國立交通大學
系所名稱:電機與控制工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:1999
畢業學年度:87
語文別:英文
論文頁數:66
中文關鍵詞:貝森等化器多項式濾波器讀取通道
外文關鍵詞:Bayesian equalizerPolynomial filtersRead channel
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本論文提出一個結合貝森等化器(Bayesian Equalizer)和多項式濾波器(Polynomial Filter)
的新型等化器。傳統貝森等化器主要是針對線性的通道(Channel)來設計,然而,很多實際系統的通道都是
非線性的。所以,為了提高等化器的性能,我們提出一個新型等化器,它是利用多項式的濾波器來模擬非線性
的通道,並結合貝森等化器而成的。此外,我們利用多項式濾波器來模擬磁碟機讀取的通道,將所提出的等化器
應用在磁碟機的讀取方面。由模擬的結果,證明我們所提出的新型等化器的確比傳統等化器的效能還要好。

In this thesis, we propose a new
Bayesian equalizer using polynomial filters.
Conventional Bayesian equalizers are designed based on the linear channel, however, the channel
is nonlinear in practice. Hence, to improve the performance of the equalizer, we propose a new
equalizer which combines the Bayesian equalizer and the polynomial filter. We also use the
polynomial filter to model the magnetic recording channel and the proposed equalizer is
empolyed for the detection of the read signal from this magnetic recording channel with
the effect of partial earsure. Simulation results show that the new Bayesian equalizer
does outperform the conventional Bayesian equalizer.

(1). Introduction
(2). Channel Equalization
(3). Bayesian Equalizer
(4). Volterra Series Expansion For Nonlinear Systems
(5). A new Bayesian Equalizer
(6). A Simple Partial Erasure Model
(7). A New Bayesian Equalizer with Partial-Erasure Model
(8). Conclusions

[1] R. W. Lucky, J. Salz, and E. J. Weldon, Jr., ``Principles of data communication,
New York: McGraw-Hill, 1968.
[2] S. Chen, G. J. Gibson, C. F. N. Cowan and P. M. Grant, ``Reconstruction of binary signal using an adaptive radial basis function equalizer,
EURASIP Signal Processing , vol. 22, pp. 77-94, May 1991.
[3] S. Boyd and L. O. Chua, ``Fading memory and the problem of approximating nonlinear operator with
Volterra series,
IEEE trans. on Circuits and Systems, vol. CAS-32, no. 11, pp. 1150-1161, Nov. 1985.
[4] R. Brockett, ``Volterra series and geometric control theory,
Automatic Control, vol. AC-19, pp. 334-348,1974.
[6] S. Chen, B. Mulgrew, and S. Mclaughlin, ``Adaptive Bayesain equalizer with decision Feedback,
IEEE Trans. on Signal Processing, vol. 41, no. 9, Sep. 1993.
[6] B. Mulgrew., ``Applying radial basis functions,"
IEEE Signal Processing Magazine, Mar. 1996.
[7] S. Siu and G. J. Gibson. ``Decision feedback equalization using neural network structures and performance comparsions with standard architecture,"
IEE Proceedings, Pt. I, vol. 137, no. 4, pp. 221-225, Aug. 1990.
[8] I. W. Sandberg, ``On Volterra expansions for time-varying nonlinear systems,'
IEEE Trans. on Circuit and Systems, vol. CAS-30, no. 2, PP. 61-67, Feb. 1983.
[9] I. W. Sandberg, ``Series expansions for nonlinear systems,"
Circuits, Systems and Signal Processing, vol. 2, No. 1, pp. 77-87, 1983.
[10] R. D. Barndt, A. J. Armstrong, H. N. bertram, and J. K. Wolf, ``A simple statistical model of partial erasure in the thin film disk recording systems ,''
IEEE Trans. Magn., vol. MAG-27, pp. 4978-4980, Nov. 1991.
[11] T. Yamauchi and J. M. Cioffi,
``A nonlinear model in thin film disk recording system,"
{\sl INTERMAG '93}, EC-09, Apr. 1993.

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