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This paper investigates the traffic handling capability of wavelength routed optical WDM (Wavelength Division Multiplexing) network, exploiting multi-path transmission under a proposed adaptive link weight algorithm. Data transmission through multiple paths improves the connection probability by reducing the wavelength hold time on a link. Further it reduces traffic load on bottleneck links by distributing...
Efficient on-chip communication is very important for exploiting enormous computing power available on a multi-core chip. Network on Chip (NoC) has emerged as a competitive candidate for implementing on-chip communication. Routing algorithms significantly affect the performance of a NoC. Most of the existing NoC architectural proposals advocate distributed routing algorithms for building NoC platforms...
Ad hoc networks are characterized by wireless connectivity, continuous changing topology, distributed operations and ease of deployment. Routing in Ad hoc networks is a challenge due to mobility and thus is a current area of research. We compare two reactive routing protocols by considering multiple performance metrics to bring out their relative merits. Both DSR and AODV share similar on demand behavior,...
Complexity of designing large and complex NoCs can be reduced/managed by using the concept of hierarchical networks. In this paper, we propose a methodology for design of deadlock free routing algorithms for hierarchical networks, by combining routing algorithms of component subnets. Specifically, our methodology ensures reachability and deadlock freedom for the complete network if routing algorithms...
An Ad-hoc network is a cooperative arrangement of the collection of mobile nodes without any centralized control. A central challenge in Ad-hoc networks is the design of routing protocols that can adapt its behavior with the frequent and rapid change in the network. The performance of the protocols varies with network characteristics and one protocol outperforms the other in some different network...
Ad-hoc networks may exhibit varying characteristics in different environment, which may make the use of various physical layers, network topologies, and nodal mobility's. Using a simulator it is possible to model and simulate different physical layers, Link / MAC layers, and multi-routing schemes, to compare end-to-end statistics (end-to-end delay, throughput and energy efficiency), andfinally to...
Measuring available bandwidth over a network path is required by many applications including end-to-end admission control and server selection. In order to measure the available bandwidth, the end hosts need network information, such as packet delay, at intermediate systems. Several techniques have been proposed to address this problem. We have selected the most recently proposed algorithm called...
In this paper we propose a series of efficient routing strategies to effectively utilize NoC systems with partially faulty links. These strategies try to use partially faulty links when the load is high and distribute traffic uniformly on links. Evaluation of our strategies for 8times8 mesh with 7% partially faulty links shows that, using our best strategy, it is possible to achieve an average reduction...
In this paper we present the results on performance evaluation of 6-sector-site deployment and compare against 3-sector-site deployment in the downlink UTRAN LTE systems. To facilitate the performance evaluation a quasi-dynamic multicell system level simulator that follows the 3GPP UTRAN LTE specifications has been used. A significant gain in the order of 88% in site capacity is achieved by changing...
Region concept helps to accommodate cores larger than the tile size in mesh topology NoC architectures. In addition, it offers many new opportunities for NoC design, as well as provides new design issues and challenges. The most important among these is the design of a deadlock free routing algorithm. In this paper, we present and compare two routing algorithms for mesh topology NoC with regions....
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