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This work is motivated by the demand for scheduling tasks upon the increasingly popular island-based many-core architectures. On such an architecture, homogeneous cores are grouped into islands, each of which is equipped with a scratchpad memory module (referred to as local memory). We first show the NP-hardness and the inapproximability of the scheduling problem. Despite the inapproximability, positive...
A placer without considering modern technology and region constraints could generate solutions with irresolvable detailed-routing violations or even illegal solutions. This paper presents a high-quality placement algorithm to satisfy technology and region constraints and optimize detailed-routing routability with three major techniques: (1) a clustering algorithm followed by two-round quadratic placement...
With the increase in the bandwidth needs of network service, the customer requirements for Quality of Service (QoS) are also higher. Although the QoS guarantees can be offered by signing the Service Level Agreement (SLA), the costs of infrastructures are increased as well. This paper proposes a shortest path algorithm based on SLA, combined with the resource allocation for virtual networks (VNs)....
The roadside unit (RSU) plays an important role in VANET environments for privacy conservation. In order to conserve the privacy of a vehicle, the issued certificate must be updated frequently via RSUs. If a certificate expires without being updated, the services for the vehicle will be terminated. Therefore, deploying as more as possible RSUs will ensure that the certificate can be updated before...
In this paper, we propose a new dynamic approach for addressing the allocation problem of the page-based scratch-pad memory (SPM) in embedded systems. The main characteristic of the proposed approach is to merge small basic blocks of a program in to big regions, and then perform the SPM allocation only when the control flow of the program is transmitted from one region to another. The results of our...
Proper Power allocation can improve energy efficiency in wireless sensor networks (WSNs). Previous works considered only the channel statistics and did not take the instantaneous observations into consideration. Applying the instantaneous quality of an observation to the transmission power control of a node can improve the overall energy efficiency. In this work, we proposed nearly optimal power allocation...
Allocation of time slots for RFID readers so as to avoid collision has been an active research problem in recent years. Various techniques have been proposed and demonstrated with success in small scale reader networks. In this paper, a heuristic algorithm and three simulated annealing (SA) algorithms for solving this problem are studied. Clearly, heuristic algorithm converges faster to a local solution...
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