Search Results - "Vaishampayan, V."

Multiple-description vector quantization with lattice codebooks: design and analysis by Vaishampayan, V.A., Sloane, N.J.A., Servetto, S.D.

“…The problem of designing a multiple-description vector quantizer with lattice codebook /spl Lambda/ is considered. A general solution is given to a labeling…”
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Multiple description coding using pairwise correlating transforms by Yao Wang, Orchard, M.T., Vaishampayan, V., Reibman, A.R.

“…The objective of multiple description coding (MDC) is to encode a source into multiple bitstreams supporting multiple quality levels of decoding. In this…”
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Multiple description wavelet based image coding by Servetto, S.D., Ramchandran, K., Vaishampayan, V.A., Nahrstedt, K.

“…We consider the problem of coding images for transmission over error-prone channels. The impairments we target are transient channel shutdowns, as would occur…”
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Modeling packet-loss visibility in MPEG-2 video by Kanumuri, S., Cosman, P.C., Reibman, A.R., Vaishampayan, V.A.

“…We consider the problem of predicting packet loss visibility in MPEG-2 video. We use two modeling approaches: CART and GLM. The former classifies each packet…”
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On the performance and complexity of channel-optimized vector quantizers by Farvardin, N., Vaishampayan, V.

“…The performance and complexity of channel-optimized vector quantizers are studied for the Gauss-Markov source. Observations on the geometric structure of these…”
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Design of multiple description scalar quantizers by Vaishampayan, V.A.

“…The design of scalar quantizers for communication systems that use diversity to overcome channel impairments is considered. The design problem is posed as an…”
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Quality monitoring of video over a packet network by Reibman, A.R., Vaishampayan, V.A., Sermadevi, Y.

“…We consider monitoring the quality of compressed video transmitted over a packet network from the perspective of a network service provider. Our focus is on…”
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Asymptotic analysis of multiple description quantizers by Vaishampayan, V.A., Batllo, J.-C.

“…A high-rate analysis of multiple description quantizers is presented for rth-power distortions and general source densities. Both, fixed-length and…”
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Effect of Pd and Ce on the enhancement of ethanol vapor response of SnO2 thick films by Bagal, L.K., Patil, J.Y., Vaishampayan, M.V., Mulla, I.S., Suryavanshi, S.S.

“…•Synthesis of nanocrystalline SnO2, Ce-doped SnO2 and Pd-loaded Ce- doped SnO2.•Structural, morphological and gas sensing characteristics of undoped and doped…”
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Fe-doped SnO2 nanomaterial: A low temperature hydrogen sulfide gas sensor by Vaishampayan, Mukta V., Deshmukh, Rupali G., Walke, Pravin, Mulla, I.S.

“…The effect of Fe-doping on the surface chemistry and gas-sensing properties of nanocrystalline tin oxide is analyzed. The pristine and Fe-doped SnO2 are…”
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The analysis and design of windowed Fourier frame based multiple description source coding schemes by Balan, R., Daubechies, I., Vaishampayan, V.

“…In this paper the windowed Fourier encoding-decoding scheme applied to the multiple description compression problem is analyzed. In the general case, four…”
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Simultaneous Data Regeneration and Digital Label Swapping in an SOA-MZI Device by Feuer, Mark D., Hruska, Christina, Wang, Hongsheng, Spiekman, Leo H., Stefanov, Boris B., Vaishampayan, Vinay A.

“…We demonstrate all-optical regeneration of a 10-Gb/s data stream, with bit-error-rate improvement, simultaneously with digital label swapping, in a…”
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Curves on a sphere, shift-map dynamics, and error control for continuous alphabet sources by Vaishampayan, V.A., Costa, S.I.R.

“…We consider two codes based on dynamical systems, for transmitting information from a continuous alphabet, discrete-time source over a Gaussian channel. The…”
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Asymptotic performance of multiple description transform codes by Batllo, J.-C., Vaishampayan, V.A.

“…The multiple description transform coder is introduced for sources with memory and an asymptotic analysis is presented for the squared error distortion. For…”
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Optimal quantizer design for noisy channels: An approach to combined source - channel coding by Farvardin, N., Vaishampayan, V.

“…We present an analysis of the zero-memory quantization of memoryless sources when the quantizer output is to be encoded and transmitted across a noisy channel…”
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On the robustness of single-loop sigma-delta modulation by Gunturk, C.S., Lagarias, J.C., Vaishampayan, V.A.

“…Sigma-delta modulation, a widely used method of analog-to-digital (A/D) signal conversion, is known to be robust to hardware imperfections, i.e., bit streams…”
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An overlay architecture for managing lightpaths in optically routed networks by Vaishampayan, V.A., Feuer, M.D.

“…Existing solutions for optically routed networks (ORNs) lack certain key management functions available to electronically routed networks. In particular, ORNs…”
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Rejection of interlabel crosstalk in a digital lightpath labeling system with low-cost all-wavelength receivers by Feuer, M.D., Vaishampayan, V.A.

“…Theoretical and experimental results on the code design and bit error rate (BER) performance of a digitally encoded lightpath labeling system for…”
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Optical and Photocatalytic Properties of Single Crystalline ZnO at the Air–Liquid Interface by an Aminolytic Reaction by Vaishampayan, Mukta V, Mulla, I. S, Joshi, Satyawati S

“…Crystalline flowerlike ZnO was synthesized by an aminolytic reaction at the air–liquid interface in an aqueous media at an alkaline pH. A thin visible film was…”
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Asymmetric multiple description lattice vector quantizers by Diggavi, S.N., Sloane, N.J.A., Vaishampayan, V.A.

“…We consider the design of asymmetric multiple description lattice quantizers that cover the entire spectrum of the distortion profile, ranging from symmetric…”
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