Browsing by Author "KING, CW"

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A UNIFIED APPROACH TO SCRAMBLING FILTER DESIGN
(1995-08-01)
KING, CW
;
LIN, CA
;
電控工程研究所
;
Institute of Electrical and Control Engineering
Most speech scrambling systems are either linear periodic filters or can be modeled as such, It is well-known that from an input-output point of view, a periodic filter is equivalent to a multi-input multi-output linear time-invariant system and thus a rational transfer matrix, In this paper, we propose a framework, based on transfer matrices and frequency domain descriptions, for analysis and design of speech scrambling filters, We derive necessary and sufficient conditions for a scrambling system to be insensitive to frame synchronization error, We propose a procedure for the design of scrambling filters that are insensitive to synchronization error and have zero bandwidth expansion. An illustrative design example is given.
GROWTH-KINETICS OF SILICON THERMAL NITRIDATION
(1982)
WU, CY
;
KING, CW
;
LEE, MK
;
CHEN, CT
;
電控工程研究所
INVERTING PERIODIC FILTERS
(1994-01-01)
LIN, CA
;
KING, CW
;
電控工程研究所
;
Institute of Electrical and Control Engineering
We consider linear periodic filters. We give simple necessary and sufficient conditions for the filter to be invertible and a simple formula to compute its inverse. If the filter is not invertible, we propose a method to compute its optimal approximate inverse. An illustrative example is given.
MINIMAL PERIODIC REALIZATIONS OF TRANSFER-MATRICES
(1993-03-01)
LIN, CA
;
KING, CW
;
電控工程研究所
;
Institute of Electrical and Control Engineering
Periodic controllers designed based on the so-called lifting technique are usually represented by transfer matrices. Real-time operations require that the controllers be implemented as periodic systems. We study the problem of realizing an Nn(o) X Nn(i) proper rational transfer matrix as an n(i)-input n(o)-output N-periodic discrete-time system. We propose an algorithm to obtain periodic realizations which have a minimal number of states. The result can also be used to remove any redundant states that exist in a periodic system.
OXIDATION RESISTANCE CHARACTERISTICS OF SILICON THERMAL NITRIDE FILMS
(1983)
WU, CY
;
KING, CW
;
LEE, MK
;
CHEN, CT
;
SHIH, CT