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Antenna coupled bolometers developed at CEA-Leti can address the whole THz range by proper tailoring of the antennas while keeping the technological stack unchanged. This paper presents the flexibility of the design regarding absorption frequency and presents its capability to sense frequencies below 1 THz.
In this paper, we present exact analytical expressions for the outage probability of cooperative diversity wireless relay networks operating in various decode-and-forward (DF) protocols (fixed, adaptive, and incremental relaying) under Rayleigh fading conditions. Current works only analyze the asymptotic behavior of these protocols, either under high signal-to-noise ratios (SNR) or under low SNR-low...
Up to now, there are so many CLIR systems has been researched and built. Generally, These CLIR systems are built upon some search engine to skip building a crawler, an indexer and a searcher component. By this way, these CLIR systems do not have enough documents gathered for identifying pairs of similar content documents in languages and they have to send and receive too much data to and from the...
This paper proposes a novel framework called distributed compressed video sensing (DISCOS) - a solution for distributed video coding (DVC) based on the recently emerging compressed sensing theory. The DISCOS framework compressively samples each video frame independently at the encoder. However, it recovers video frames jointly at the decoder by exploiting an interframe sparsity model and by performing...
We propose a novel layered compressed sensing (CS) approach for robust transmission of video signals over packet loss channels. In our proposed method, the encoder consists of a base layer and an enhancement layer. The base layer is a conventionally encoded bitstream and transmitted without any error protection. The additional enhancement layer is a stream of compressed measurements taken across slices...
Failure management is crucial for high performance computing systems, especially when the complexity of applications and underlying infrastructure has grown sharply in recent years. In this paper, we present the design, implementation and experiment of trouble dashboard (TD), an adaptive, flexible, and low overhead failure monitoring system. Our goal is to provide a lightweight, scalable failure-monitoring...
This paper proposes a novel framework called Distributed Compressed Video Sensing (DISCOS) - a solution for Distributed Video Coding (DVC) based on the compressed sensing (CS) theory. The DISCOS framework compressively samples each video frame independently at the encoder and recovers video frames jointly at the decoder by exploiting an interframe sparsity model and by performing sparse recovery with...
Most lightweight ad-hoc routing authentication protocols based on hash-chain method face the latency issue. This is because the late disclosure of predecessor key in the hash-chain leads to delayed authentication. Moreover, routing authentication approaches usually ignore or assume a prior key management as a working condition. In this paper, we integrate a reliable key management scheme based on...
This paper discusses two types of Demand Response (DR), namely price-based DR and reliability-based DR, in the United States context. The advantages and limitations of each type of DR are reviewed through examining related studies. The paper claims that neither price-based DR nor reliability-based DR can maximize the DR benefit if applied alone. The paper then proposes two hybrid frameworks, in which...
Distributed feedback (DFB) phosphate glass fiber lasers that are cladding pumped with multimode diodes have been demonstrated. Single and cascaded DFB lasers with outputs up to 160 mW and 1 W, respectively, have been achieved.
We propose a new mechanism for optical limiting in which nonlinear absorption and nonlinear reflection act in concert. The mechanism is based on the light-induced shift of the band gap in Bragg-spaced semiconductor quantum wells.
Spin- and polarization-dependent ultrafast blue shifts, transient gain and self-wave-mixing are observed in Bragg-spaced InGaAs/GaAs quantum wells. The data are in agreement with a microscopic theory.
We present a microscopic theory for the polarization dependence of the nonlinear reflection of Bragg-spaced quantum wells. Our theory includes polariton correlations beyond third order. Comparisons with experimental results show reasonably good agreement.
We present a microscopic theory for the polarization dependence of the nonlinear reflection of Bragg-spaced quantum wells. Our theory includes polariton correlations beyond third order. Comparisons with experimental results show reasonably good agreement.
Current opinions vary on the question of suitability of wavelet-based multi-carrier modulation (MCM) systems for communication through dispersive time invariant channels such as digital subscriber line (DSL) and wireless communication environments. This is because there has not been sufficient work done on the analysis and improvement techniques for wavelet-based MCM systems. In this paper we propose...
We present a microscopic theory for the nonlinear reflection of semiconductor Bragg structures. Our theoretical results showing ultrafast optical gain complement recent experimental observations and allow for the identification of the underlying many-particle processes.
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