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- Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Peter Kwong-Shun Tam
- IEEE Trans. on Circuits and Systems
- 2008

1 Manuscript received June 18, 2007; revised July 30, 2007. This work was substantially supported by a research grant (project number G-YD26) from the Hong Kong Polytechnic University, the Centre for Multimedia Signal Processing, The Hong Kong Polytechnic University, the CRGC grant (project number PolyU 5101\01E) from the Research Grants Council of Hong… (More)

- Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Yanqun Liu, Peter Kwong-Shun Tam, Kok Lay Teo
- IEEE Transactions on Signal Processing
- 2005

This correspondence considers an optimum nonuniform finite impulse response (FIR) transmultiplexer design problem subject to specifications in the frequency domain. Our objective is to minimize the sum of the ripple energy for all the individual filters, subject to the specifications on amplitude and aliasing distortions, and to the passband and stopband… (More)

- Bingo Wing-Kuen Ling, Charlotte Yuk-Fan Ho, Zoran Cvetkovic
- Digital Signal Processing
- 2012

- Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Hak-Keung Lam, Muhammad H. U. Nasir
- IEEE Transactions on Neural Networks
- 2008

In this paper, it is found that the weights of a perceptron are bounded for all initial weights if there exists a nonempty set of initial weights that the weights of the perceptron are bounded. Hence, the boundedness condition of the weights of the perceptron is independent of the initial weights. Also, a necessary and sufficient condition for the weights… (More)

- Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Joshua D. Reiss
- IEEE Trans. on Circuits and Systems
- 2006

In this paper, a fuzzy impulsive control strategy is proposed. The state vectors that the impulsive controller resets to are determined so that the state vectors of interpolative low-pass sigma–delta modulators (SDMs) are bounded within any arbitrary nonempty region no matter what the input step size, the initial condition and the filter parameters are, the… (More)

- Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Joshua D. Reiss
- IEEE Trans. on Circuits and Systems
- 2006

In this paper, an initial condition of strictly causal rational interpolative sigma–delta modulators (SDMs) is estimated based on quantizer output bit streams and an input signal. A set of initial conditions generating bounded trajectories is characterized. It is found that a set of initial conditions generating bounded trajectories but not necessarily… (More)

- Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Zhi-Wei Chi, Mohammad Shikh-Bahaei, Yanqun Liu, Kok Lay Teo
- IEEE Trans. on Circuits and Systems
- 2008

In this brief, a near allpass strictly stable minimal phase real valued rational IIR filter is designed so that the maximum absolute phase error is minimized subject to a specification on the maximum absolute allpass error. This problem is actually a minimax nonsmooth optimization problem subject to both linear and quadratic functional inequality… (More)

- Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Lamia Benmesbah, Chi-Wah Kok, Wan-Chi Siu, Kok Lay Teo
- IEEE Transactions on Signal Processing
- 2010

In this correspondence, a two-channel linear phase finite-impulse-response (FIR) quadrature mirror filter (QMF) bank minimax design problem is formulated as a nonconvex optimization problem so that a weighted sum of the maximum amplitude distortion of the filter bank, the maximum passband ripple magnitude and the maximum stopband ripple magnitude of the… (More)

- Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Yanqun Liu, Peter Kwong-Shun Tam, Kok Lay Teo
- IEEE Trans. on Circuits and Systems
- 2008

- Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Yanqun Liu, Peter Kwong-Shun Tam, Kok Lay Teo
- IEEE Transactions on Signal Processing
- 2005

In this correspondence, we consider the problem of designing a set of nonuniform near allpass complementary finite impulse response (FIR) filters. This problem can be formulated as a quadratic semi-infinite programming problem, where the objective is to minimize the sum of the ripple energy for the individual filters, subject to the passband and stopband… (More)