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This paper focuses on studying the performance of TPGF geographic routing algorithm with multi routing metric called McTPGF in random duty-cycled wireless multimedia sensor networks (WMSNs). The multi-metric contains the geographic distance and the time, which is called sleeping-delay in this paper, the forwarding node waits to forward packet to the neighbor node after it wakes up. We recognize the...
Low-density parity-check (LDPC) codes form an important subclass of error correcting coding techniques, and its implementation has been hot spot of domains such as signal process, magnetic recording or next generation communication for years. This paper proposes a configurable FPGA implementation of Partition-and-Shift LDPC decoder based on Min-Sum algorithm. An MPEG algorithm is introduced to reduce...
Network on chip (NoC) is an emerging area and recognized as the future methodology for chip design. Provision of QoS in network on chip is a challenging problem and receives much attention recently. A QoS routing scheme is proposed to support various traffic with different QoS requirements in the interconnection networks of NoC. Specifically, three distributed QoS routing algorithms are developed...
The characteristics of mobile ad hoc network make it face much more security threats than wired network, while the security of routing is the premise of secure application of ad hoc networks. In allusion to the safety weakness of resisting the active attacks from malicious nodes, trust metric is introduced to defend those attacks by loading a trust model on proposed distance-based LAR (DBALR). The...
In ad hoc networks, node misbehaviors due to selfish or malicious reasons can significantly degrade the performance of ad hoc networks. Previously, we proposed a trust-based incentive model on a self-policing mechanism to make nodes evaluate the trust of their neighbor locally (Kun and Meng, 2007). That approach can mitigate contamination by direct observation and the use of second-hand information...
The movement of nodes in MANETs results in a change in routes, requiring some mechanism for determining new routes. In this paper, a distance-based location-aided routing (DBLAR) for MANETs had been proposed. By tracing the LI of destination nodes and the change of distance between nodes to adjust route discovery dynamically, the proposed routing algorithm can avoid flooding in the whole networks...
Heterogeneous collaborative networks have been ever-increasingly concerned due to the constant development of wireless networks . However, before employed in commercial applications, the secure charging should be solved; say, the charging systems with the guarantee of security are vital to support this architecture. Meanwhile, nodes' non-cooperation behavior should be under control as well. Hence,...
In this paper, channel aware adaptive resource allocation scheme in two-hop wireless relay networks (WRNs) is proposed to achieve maximum system throughput and better delay performance. Both the routing selection and resource scheduling algorithm are designed to accomplish the resource allocation scheme. Considering the network throughput, a routing algorithm is proposed to select the optimal RS based...
Regular wireless sensor networks gain more and more attention because they can help to save energy and achieve longer network lifetime. In this paper, the popular hexagonal sensor network is focused and some new energy efficient routing algorithms are proposed based on a new addressing scheme. Performance of the new algorithms is compared by simulation. The results show the tree based routing algorithm...
Direct interconnection network (DIN) has gained more and more attention when designing the switching fabric in the terabit routers. Various congestion control mechanisms are proposed for DIN when it is employed in the parallel computer systems. However, they all have own shortcomings and are not suitable for fabrics in the terabit routers. Based on the requirements of terabit class routers we propose...
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