Investigating the validity of IEEE 802.11 MAC modeling hypotheses (2008)
Huang, K.D., Duffy, K.R., Malone, D., Leith, D. J.
As WLANs employing IEEE 802.11 have become pervasive, many analytic models for predicting their performance have been developed in recent years. Due to the complicated nature of the 802.11 MAC...
D. J. Leith, C. Kellett, P. Clifford, R. N. Shorten
A non-invasive method for link upgrade planning
ABSTRACT A critique of recently proposed Buffer-Sizing strategies (2008)
G. Vu-brugier, R. S. Stanojević, D. J. Leith, R. N. Shorten
Internet router buffers are used to accommodate packets that arrive in bursts and to maintain high utilization of the egress link. Such buffers can lead to large queueing delays. Recently, several...
operations General Terms (2008)
G. Vu-brugier, R. S. Stanojevic, D. J. Leith, R. N. Shorten
Internet router buffers are used to accommodate packets that arrive in bursts and to maintain high utilization of the egress link. Such buffers can lead to large queueing delays. Recently, several...
E. Solak, D. J. Leith, R. Murray-smith, W. E. Leithead, C. E. Rasmussen
Gaussian processes provide an approach to nonparametric modelling which allows a straightforward combination of function and derivative observations in an empirical model. This is of particular...
Channel Dependent Interference and Decentralized (2008)
Abstract — We consider channel allocation to mitigate interference between wireless LANs. The channel allocation task is often formulated in the literature as finding a proper colouring of a single...
E. Solak, D. J. Leith, R. Murray-smith, W. E. Leithead, C. E. Rasmussen
Gaussian processes provide an approach to nonparametric modelling which allows a straightforward combination of function and derivative observations in an empirical model. This is of particular...
Modeling 802.11 Mesh Networks (2008)
K. Duffy, D.J. Leith, T. Li, D. Malone
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...
Direct Regulation Of Large Speed Excursions For Variable Speed Wind (2008)
Turbines Leithead Leith, D. J. Leith, F. Hardan, H. Markou
In above rated wind speed the pitch control system of a pitch regulated variable speed wind turbine aims to maintain the rotor speed within a permitted range. However, this requirement can be...
E. Solak, W. E. Leithead, D. J. Leith
Gaussian processes provide an approach to nonparametric modelling which allows a straightforward combination of function and derivative observations in an empirical model. This is of particular...
E. Solak, R. Murray-smith, W. E. Leithead, D. J. Leith, C. E. Rasmussen
Gaussian processes provide an approach to nonparametric modelling which allows a straightforward combination of function and derivative observations in an empirical model. This is of particular...
Experimental implementation of optimal WLAN channel selection without communication (2007)
Malone, D., Clifford, P., Reid, D., Leith, D. J.
Proposed a simple decentralised algorithm for channel allocation that is provably correct and requires no message passing or common administrative control between interfering WLANs. In this paper we...
MAC layer channel quality measurement in 802.11 (2007)
Malone, D., Clifford, P., Leith, D. J.
We present a novel technique for accurately estimating the proportions of packet losses arising from collisions and from other sources of loss (channel noise, hidden nodes etc). Our approach is...
Inference of disjoint linear and nonlinear sub-domains of a nonlinear mapping (2006)
Leith, D.J., Leithead, W.E., Murray-Smith, R.
This paper investigates new ways of inferring nonlinear dependence from measured data. The existence of unique linear and nonlinear sub-spaces which are structural invariants of general nonlinear...
Inference of disjoint linear and nonlinear sub-domains of a nonlinear mapping (2006)
Leith, D.J., Leithead, W.E., Murray-Smith, R.
This paper investigates new ways of inferring nonlinear dependence from measured data. The existence of unique linear and nonlinear sub-spaces which are structural invariants of general nonlinear...
Inference of disjoint linear and nonlinear sub-domains of a nonlinear mapping (2006)
Leith, D.J., Leithead, W.E., Murray-Smith, R.
This paper investigates new ways of inferring nonlinear dependence from measured data. The existence of unique linear and nonlinear sub-spaces which are structural invariants of general nonlinear...
Improving Fairness in Multi-Hop Mesh Networks Using 802.11e (2006)
Duffy, K., Leith, D. J., Li, T., Malone, D.
In this paper we introduce a tractable analytic model of throughput performance for general 802.11 multi-hop networks. We use this model to explore a number of fairness issues in 802.11 multi-hop...
A self-managed distributed channel selection algorithm for WLANs (2006)
Abstract — In this paper we consider the problem of a wireless LAN selecting a channel to minimise interference with other WLANs. We focus on interfering infrastructure-mode networks, where each...
Convergence of distributed learning algorithms for optimal wireless channel allocation (2006)
Abstract — In this paper we establish the convergence to an optimal non-interfering channel allocation of a class of distributed stochastic algorithms. We illustrate the application of this result...
Impact of drop synchronisation on TCP fairness in high bandwidth-delay product networks (2006)
Abstract — In this paper we consider the performance of several well known high speed protocols in environments where individual flows experience different probabilities of seeing a drop in...
Improving Fairness in Multi-Hop Mesh Networks Using 802.11e (2006)
K. Duffy, D.J. Leith, T. Li, D. Malone
In this paper we introduce a tractable analytic model of throughput performance for general 802.11 multi-hop networks. We use this model to explore a number of fairness issues in 802.11 multi-hop...
TCP fairness in 802.11e WLANs (2005)
Leith, D. J., Clifford, P., Malone, D., Ng, A.
We investigate the use of the 802.11e MAC EDCF to address transport layer unfairness in WLANs. A simple solution is developed that uses the 802.11e AIFS, TXOP and CWmin parameters to ensure fairness...
Using the 802.11e EDCF to Achieve TCP Upload Fairness over WLAN Links (2005)
We investigate the use of the 802.11e MAC EDCF to address transport layer unfairness in WLANs. A simple solution is developed that uses the 801.11e AIF S and CWmin parameters to ensure fairness...
TCP fairness in 802.11e WLANs (2005)
D. J. Leith, P. Clifford, D. Malone, A. Ng
Abstract — We investigate the use of the 802.11e MAC EDCF to address transport layer unfairness in WLANs. A simple solution is developed that uses the 802.11e AIF S, TXOP and CWmin parameters to...
Issues in the design of switched linear systems: a benchmark study (2003)
Shorten, R., Leith, D.J., Leithead, W.E., Curran, P.
In this paper we present a tutorial overview of some of the issues that arise in the design of switched linear control systems. A benchmark regulation problem is then presented.
Issues in the design of switched linear systems: a benchmark study (2003)
Shorten, R., Leith, D.J., Leithead, W.E., Curran, P.
In this paper we present a tutorial overview of some of the issues that arise in the design of switched linear control systems. A benchmark regulation problem is then presented.
Issues in the design of switched linear systems: a benchmark study (2003)
Shorten, R., Leith, D.J., Leithead, W.E., Curran, P.
In this paper we present a tutorial overview of some of the issues that arise in the design of switched linear control systems. A benchmark regulation problem is then presented.
Derivative observations in Gaussian Process models of dynamic systems (2003)
Solak, E., Murray-Smith, R., Leithead, W.E., Leith, D.J., Rasmussen, C.E.
Gaussian processes provide an approach to nonparametric modelling which allows a straightforward combination of function and derivative observations in an empirical model. This is of particular...
Divide and conquer identification using Gaussian process priors (2002)
Leith, D. J., Leithead, W. E., Solak, E., Murray-Smith, R.
We investigate the reconstruction of nonlinear systems from locally identified linear models. It is well known that the equilibrium linearisations of a system do not uniquely specify the global...
Leith, D.J., Tsourdos, A., White, B., Leithead, W.E.
In this paper a modern gain-scheduling methodology is proposed which exploits recently developed velocity-based techniques to resolve many of the deficiencies of classical gain-scheduling approaches...
Li, M., Er, M., Leithead, W.E., Leith, D.J.
For a class of uncertain time-delay systems, a new approach to the design of robust tracking and model following controllers is presented. In the case that the system uncertainties satisfy the...
Leith, D.J., Tsourdos, A., White, B., Leithead, W.E.
In this paper a modern gain-scheduling methodology is proposed which exploits recently developed velocity-based techniques to resolve many of the deficiencies of classical gain-scheduling approaches...
Li, M., Er, M., Leithead, W.E., Leith, D.J.
For a class of uncertain time-delay systems, a new approach to the design of robust tracking and model following controllers is presented. In the case that the system uncertainties satisfy the...
Leith, D.J., Tsourdos, A., White, B., Leithead, W.E.
In this paper a modern gain-scheduling methodology is proposed which exploits recently developed velocity-based techniques to resolve many of the deficiencies of classical gain-scheduling approaches...
Li, M., Er, M., Leithead, W.E., Leith, D.J.
For a class of uncertain time-delay systems, a new approach to the design of robust tracking and model following controllers is presented. In the case that the system uncertainties satisfy the...
Analytic Framework for Blended Multiple Model Systems Using Linear Local Models (1999)
In this paper it is shown that the dynamics of a conventional type of blended multiple model system are only weakly related to the local models from which it is formed. A novel class of...
Divide and conquer identification using Gaussian process priors
Leith, D. J., Leithead, W. E., Solak, E., Murray-Smith, R.
We investigate the reconstruction of nonlinear systems from locally identified linear models. It is well known that the equilibrium linearisations of a system do not uniquely specify the global...
Derivative observations in Gaussian Process models of dynamic systems
Solak, E., Murray-Smith, R., Leithead, W.E., Leith, D.J., Rasmussen, C.E.
Gaussian processes provide an approach to nonparametric modelling which allows a straightforward combination of function and derivative observations in an empirical model. This is of particular...
Divide and conquer identification using Gaussian process priors
Leith, D. J., Leithead, W. E., Solak, E., Murray-Smith, R.
We investigate the reconstruction of nonlinear systems from locally identified linear models. It is well known that the equilibrium linearisations of a system do not uniquely specify the global...
Derivative observations in Gaussian Process models of dynamic systems
Solak, E., Murray-Smith, R., Leithead, W.E., Leith, D.J., Rasmussen, C.E.
Gaussian processes provide an approach to nonparametric modelling which allows a straightforward combination of function and derivative observations in an empirical model. This is of particular...