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Finite-State Vector Quantization for Noisy Channels
(1992)
Under noiseless channel conditions and for sources with memory, finite-state vector quantizers (FSVQs) exhibit improvements over memoryless vector quantizers. It is shown, however, that in the presence of channel noise, ...
A Study of the Reflection Symmetric Residual Quantizer and Application to Speech Coding
(1993)
The performance of the reflection symmetric residual quantizer (rRQ) on various types of sources is tested and certain conclusions about its capabilities and limitations are drawn. rRQ is then used to design several ...
Entropy-Constrained Trellis Coded Quantization: Implementation and Adaptation
(1993)
Entropy-constrained trellis coded quantization (ECTCQ) of memoryless sources is known to be an efficient source coding technique in the rate-distortion sense. We develop an ECTCQ scheme that employs a symmetric reproduction ...
Representation of Spectral Profiles in the Auditory System Part II: A Ripple Analysis Model
(1993)
Based on experimental results presented in [Vranic-Sowers and Shamma, 1993], and on further physiological and psychoacoustical evidence, it is argued that the auditory system analyzes a spectral profile along two largely ...
Design and Performance Evaluation of a Class of Finite-State Vector Quantizers
(1992)
The finite-state vector quantizer (FSVQ), introduced by Foster, Dunham and Gray, is a finite-state machine that can be viewed as a collection of memoryless full-searched vector quantizers, where each input vector is encoded ...
Heavy and Light Traffic Approximations for Queues with Synchronization Constraints
(1990)
The aim of this dissertation is to develop approximations to performance measures for queues with synchronization constraints with the help of limit theorems. In particular we shall consider queues exhibiting the fork-join ...
Variable-Rate Finite-State Vector Quantization and Applications to Speech and Image Coding
(1991)
A finite-state vector quantizer is a finite-state machine that can be viewed as a collection of memoryless full-searched vector quantizers, where each input vector is encoded using a vector quantizer associated with the ...
An Analysis of Rollback-Based Simulation
(1991)
We present and analyze a general model of rollback in parallel processing. The analysis points out three possible modes where rollback may become excessive; we provide an example of each type. We identify the parameters ...
A Perceptually Motivated Three-Component Image Model
(1992)
In this paper, results of phychovisual studies of the human visual system are discussed and interpreted in a mathematical framework. The formation of the perception is described by appropriate minimization problems and the ...
Area-Efficient Switched Capacitor Filters: Very Large Time- Constant Circuits
(1992)
The detailed theoretical analysis of very large time-constant (VLT) integrators which use either charge elimination (T-cell and Huang's integrators) or charge cancellation (Nagaraj's and charge-differencing integrators) ...