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Your search keyword '"Ken R. Duffy"' showing total 3 results
Start Over Author "Ken R. Duffy" Journal ieee communications letters
3 results on '"Ken R. Duffy"'

1. Log-convexity of rate region in 802.11e WLANs

Author

Douglas J. Leith, Ken R. Duffy, and Vijay G. Subramanian

Subjects
FOS: Computer and information sciences, 0209 industrial biotechnology, Mathematical optimization, Computer science, Throughput, 02 engineering and technology, Convexity, Computer Science - Networking and Internet Architecture, 020901 industrial engineering & automation, Wireless lan, Computer Science::Networking and Internet Architecture, 0202 electrical engineering, electronic engineering, information engineering, Electrical and Electronic Engineering, Networking and Internet Architecture (cs.NI), Wireless network, business.industry, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, 020206 networking & telecommunications, Computer Science Applications, Computer Science::Performance, Aloha, Modeling and Simulation, Computer Science, IEEE 802.11e-2005, business, Hamilton Institute, Computer network
Abstract

In this paper we establish the log-convexity of the rate region in 802.11 WLANs. This generalises previous results for Aloha networks and has immediate implications for optimisation based approaches to the analysis and design of 802.11 wireless networks.

Published
2010

2. Modeling the Impact of Buffering on 802.11

Author

Ayalvadi Ganesh and Ken R. Duffy

Subjects
business.industry, Computer science, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Throughput, Code rate, Computer Science Applications, IEEE 802.11, Transmission (telecommunications), Modeling and Simulation, Wireless lan, Resource allocation, Resource management, Electrical and Electronic Engineering, business, Throughput (business), Computer network
Abstract

A finite load, large buffer model for the WLAN medium access protocol IEEE 802.11 is developed that gives throughput and delay predictions. This enables us to investigate the impact of buffering on resource allocation. In the presence of heterogeneous loads, 802.11 do not allocate transmission opportunities equally. It is shown that increased buffering can help this inequity, but only at the expense of possibly significantly increased delays

Published
2007

3. Modeling 802.11 mesh networks

Author

Tianji Li, David Malone, Ken R. Duffy, and Douglas J. Leith

Subjects
Computer science, business.industry, Distributed computing, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Mesh networking, Subject (documents), Throughput, Code rate, Computer Science Applications, Computer Science::Performance, IEEE 802.11, Modeling and Simulation, Computer Science, Wireless lan, Computer Science::Networking and Internet Architecture, Electrical and Electronic Engineering, business, Throughput (business), Hamilton Institute, Computer network
Abstract

We introduce a tractable analytic model of throughput performance for general 802.11 multi-hop multi-radio networks subject to finite loads. The model’s accuracy and utility is illustrated by comparison with simulation.

Published
2006

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