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On the Effects of the Initial Condition in State Estimation for Discrete-Time Linear Systems
(1992)
We consider the one-step prediction problem for discrete-time linear systems in correlated Gaussian white plant and observation noises, and non-Gaussian initial conditions. Explicit representations are obtained for the ...
Critical Points of Matrix Least Square Distance Functions
(1992)
A Classical problem in matrix analysis and total least squares estimation is that of finding a best approximant of a given matrix by lower rank ones. In this paper the critical points and the local minima are determined ...
A Three-Component Image Model Based on Human Visual Perception and Its Applications in Image Coding and Processing
(1992)
In this work, results of psychovisual 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 ...
Optimal Detection of Discrete Markov Sources Over Discrete Memoryless Channels - Applications to Combined Sources-Channel Coding
(1992)
We consider the problem of detecting a discrete Markov source which is transmitted across a discrete memoryless channel. The detection is based upon the maximum a posteriori (MAP) criterion which yields the minimum probability ...
Analog VLSI Implementations of Auditory Wavelet Transforms Using Switched-Capacitor Circuits
(1992)
A general scheme for the VLSI implementation of auditory wavelet transforms is proposed using switched-capacitor (SC) circuits. SC circuits are well suited for this application since the dilation constant across different ...
Distributed Parallelism Considered Harmful
(1992)
We consider a model of a distributed parallel processing system that shows that parallel versus sequential processing is beneficial only under conditions of light load. Our results are valid under general assumptions on ...
One-Step Memory Nonlinearities for Signal Detection and Discrimination from Correlated Observations
(1992)
New detectors employing test statistics which are formed by passing pairs of consecutive observations through one-step memory nonlinearities g(x, y) and summing the resulting terms are introduced. Problems of discrimination ...
A Distributed, Object-Oriented Communication Network Simulation Testbed
(1992)
The Distributed Network Simulation Testbed is a research tool designed to aid users in the modeling and performance analysis of communication protocols. The testbed can be used to model communication networks consisting ...
Comparison of Coherent WDMA and Hybrid WDMA/CDMA for the Multiplexing of Optical Signals
(1992)
In this paper, we provide an accurate analysis of the performance of coherent dense wavelength-division multiple-access (WDMA) schemes introduced for use in high-capacity optical networks. In our analysis, the effects of ...
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, ...