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Wireless Sensor Network is an adhoc network having nodes with constraints like less memory and processing capability. Nodes work without knowledge of their position in the network. After random deployment of nodes, some of the nodes are in critical position as they connect one group of sensor nodes to another. If these nodes are removed from the network it may lead to partitioning of network. Most...
In this paper we present a partially asynchronous, fully distributed flow-based access scheme for slotted-time protocols, that guarantees proportional-fairness in ad hoc wireless networks. This problem of providing fairness in wireless networks is considered in the framework of non-linear optimization. We say a medium access control algorithm is proportionally fair with respect to individual end-to-end...
In this paper we present a distributed flow-based access scheme for slotted-time protocols, that provides proportional- fairness in ad hoc wireless networks based on the local two- hop information of nodes. We say a medium access control algorithm is proportionallyfair with respect to individual end- to-end flows in a network, if the product of the end-to-end flow-successprobabilities is maximized...
This paper presents a distributed flow-based access scheme for slotted-time protocols that approximates proportional-fairness in ad hoc wireless networks and does not have a significant implementation overhead. We say a medium access control algorithm is proportionally fair with respect to individual end-to-end flows in a network, if the product of the end-to-end flow-success probabilities is maximized...
Estimation of channel and data characteristics by the receiver is important in adaptive wireless transmission protocols and in cognitive radio. This paper formulates the estimation problem with the help of an illustrative example from the IEEE 802.11a OFDM standard. The problem reduces to the estimation of the common component variance and mixing probabilities in a finite Gaussian mixture, with known...
This paper presents a network-triggered feedback control framework for addressing an inherent hop-unfairness in random access wireless networks, it is experimentally shown that when multiple flows with varying hop-counts compete for wireless bandwidth, the shorter flows can consume an unfair share of the total bandwidth by diverting capacity from longer hop flows. Experimentally we also demonstrate...
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