We propose an efficient parallel Gauss-Seidel (GS) iterative algorithm for solving large systems of linear equations on a 3-dimensional torus network-on-chip (NoC) architecture. The proposed parallel algorithm is O(Nn2/k3) time complexity for solving a system with matrix of order n on a k×k×k 3D torus NoC architecture with N iterations assuming n and N are […]
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Experimental Control and Design of Low-Frequency Bias Networks for Dynamically Biased Amplifiers
To reach the video bandwidth requirements on the supply paths, power amplifiers with dynamic bias schemes are constrained to reduce the values of the low-frequency (LF) decoupling capacitors on their bias lines. This can entail a decrease of the LF stability margins, among other negative effects. In this work, a methodology is proposed to experimentally […]
Read moreThe automatic recognition of sound events by computers is an important aspect of emerging applications such as automated surveillance, machine hearing and auditory scene understanding. Recent advances in machine learning, as well as in computational models of the human auditory system, have contributed to advances in this increasingly popular research field. Robust sound event classification, […]
Read moreWe demonstrate a cross-layer orchestration for packet service over IP-optical networks, in terms of availability and elasticity. Our orchestration built over the SDN concept self-adjusts and cost-efficiently responds to dynamics on network paths, impairments/failures, and topology.
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Optimal Stochastic Coordinated Beamforming for Wireless Cooperative Networks With CSI Uncertainty
Transmit optimization and resource allocation for wireless cooperative networks with channel state information (CSI) uncertainty are important but challenging problems in terms of both the uncertainty modeling and performance optimization. In this paper, we establish a generic stochastic coordinated beamforming (SCB) framework that provides flexibility in the channel uncertainty modeling, while guaranteeing optimality in the […]
Read moreOptical networks-on-chip (ONoCs) have shown the potential to be substituted for electronic networks-on-chip (NoCs) to bring substantially higher bandwidth and more efficient power consumption in both onand off-chip communication. However, basic optical devices, which are the key components in constructing ONoCs, experience inevitable crosstalk noise and power loss; the crosstalk noise from the basic devices […]
Read moreThe current evolution of system architectures leads towards implementation of large number of processor cores into the same circuit. This evolution actually supports the performance increase and provides the capability to support the execution of very complex applications. Nevertheless, if these new architectures propose high computational performances, an important bottleneck appears for the communications between […]
Read moreDelay- and Disruption Tolerant Networks (DTNs) are based on an overlay protocol and on the store-carry-forward paradigm. In practice, each DTN node can store information for a long time before forwarding it. DTNs are particularly suited to cope with the challenges imposed by the space environment. This paper is focused on routing in space DTNs, […]
Read moreRecently, most wireless network security schemes merely based on physical layer characteristics tackle the two fundamental issues-device authentication and secret key extraction separately. It remains an open problem to simultaneously achieve device authentication and fast secret key extraction merely using wireless physical layer characteristics, without the help of advanced hardware or out-of-band channel. In this […]
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Multi-relay Selection in Decode-and-Forward Cooperative Network Based on Genetic Algorithm
A novel multi-relay selection algorithm based on genetic algorithm (GA) in dual-hop decode- and-forward cooperative network is presented. The quality of service is expressed by the condition that the SNR of destination should be larger than 22R — 1 according to Shannon information capacity, in which R is its data-rate requirement. Moreover, residual energy status […]
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