82 citations · 363 across the 22 of their papers we have counts for
25 papers
Robust Implementable Regulator Design of General Linear Systems
Lei Wang, Lorenzo Marconi, Christopher M. Kellett
Robust implementable output regulator design approaches are studied for general linear continuous-time \mbox{systems} with periodically sampled measurements, consisting of both the…
Robust I&I Adaptive Tracking Control of Systems with Nonlinear Parameterization: An ISS Perspective
Lei Wang, Christopher M. Kellett
This paper studies the immersion and invariance (I&I) adaptive tracking problem for a class of nonlinear systems with nonlinear parameterization in the ISS framework. Under some mi…
Robust Output Feedback Stabilization of MIMO Invertible Nonlinear Systems with Output-Dependent Multipliers (extended version)
Lei Wang, Christopher M. Kellett
This note studies the robust output feedback stabilization problem of multi-input multi-output invertible nonlinear systems with output-dependent multipliers. An "ideal" state feed…
On Continuous-Time Infinite Horizon Optimal Control -- Dissipativity, Stability and Transversality
Timm Faulwasser, Christopher M. Kellett
This paper analyses the interplay between dissipativity and stability properties in continuous-time infinite-horizon Optimal Control Problems (OCPs). We establish several relations…
Robust Output Feedback Stabilization of Multivariable Invertible Nonlinear Systems: A Feedback Linearization-Based Method
Lei Wang, Christopher M. Kellett
This note studies the robust output feedback stabilization problem of a class of multi-input multi-output invertible nonlinear systems, for which an "ideal" state feedback based on…
Adaptive Semiglobal Nonlinear Output Regulation:An Extended-State Observer Approach
Lei Wang, Christopher M. Kellett
This paper proposes a new extended-state observer-based framework for adaptive nonlinear regulator design of a class of nonlinear systems, in the general nonequilibrium theory. By…
Feedback, Dynamics, and Optimal Control in Climate Economics
Christopher M. Kellett, Steven R. Weller, Timm Faulwasser +2
For his work in the economics of climate change, Professor William Nordhaus was a co-recipient of the 2018 Nobel Memorial Prize for Economic Sciences. A core component of the work…
Convergence Properties for Discrete-time Nonlinear Systems
Duc N. Tran, Björn S. Rüffer, Christopher M. Kellett
Three similar convergence notions are considered. Two of them are the long established notions of convergent dynamics and incremental stability. The other is the more recent notion…
DICE2013R-mc: A Matlab / CasADi Implementation of Vanilla DICE 2013R
Christopher M. Kellett, Timm Faulwasser, Steven R. Weller
This brief document provides a description of how to use DICE2013R-mc \cite{DICE2013R-mc}, a Matlab and CasADi-based implementation of the Dynamic Integrated model of Climate and E…
Classical Converse Theorems in Lyapunov's Second Method
Christopher M. Kellett
Lyapunov's second or direct method is one of the most widely used techniques for investigating stability properties of dynamical systems. This technique makes use of an auxiliary f…
Input-to-State Stability, integral Input-to-State Stability, and -Gain Properties: Qualitative Equivalences and Interconnected Systems
Christopher M. Kellett, Peter M. Dower
Input-to-state stability (ISS) and -gain are well-known robust stability properties that continue to find wide application in the analysis and control of nonlinear d…
Optimal Coding Functions for Pairwise Message Sharing on Finite-Field Multi-Way Relay Channels
Lawrence Ong, Sarah J. Johnson, Christopher M. Kellett
This paper considers the finite-field multi-way relay channel with pairwise message sharing, where multiple users exchange messages through a single relay and where the users may s…
On the Capacity of the Binary-Symmetric Parallel-Relay Network
Lawrence Ong, Sarah J. Johnson, Christopher M. Kellett
We investigate the binary-symmetric parallel-relay network where there is one source, one destination, and multiple relays in parallel. We show that forwarding relays, where the re…
On the Equal-Rate Capacity of the AWGN Multiway Relay Channel
Lawrence Ong, Christopher M. Kellett, Sarah J. Johnson
The L-user additive white Gaussian noise multiway relay channel is investigated, where L users exchange information at the same rate through a single relay. A new achievable rate r…
The Three-User Finite-Field Multi-Way Relay Channel with Correlated Sources
Lawrence Ong, Gottfried Lechner, Sarah J. Johnson +1
This paper studies the three-user finite-field multi-way relay channel, where the users exchange messages via a relay. The messages are arbitrarily correlated, and the finite-field…
Functional-Decode-Forward for the General Discrete Memoryless Two-Way Relay Channel
Lawrence Ong, Christopher M. Kellett, Sarah J. Johnson
We consider the general discrete memoryless two-way relay channel, where two users exchange messages via a relay, and propose two functional-decode-forward coding strategies for th…
The Capacity of a Class of Multi-Way Relay Channels
Lawrence Ong, Sarah J. Johnson, Christopher M. Kellett
The capacity of a class of multi-way relay channels, where L users communicate via a relay (at possibly different rates), is derived for the case where the channel outputs are modu…
The Half-Duplex AWGN Single-Relay Channel: Full Decoding or Partial Decoding?
Lawrence Ong, Sarah J. Johnson, Christopher M. Kellett
This paper compares the partial-decode-forward and the complete-decode-forward coding strategies for the half-duplex Gaussian single-relay channel. We analytically show that the ra…
Joint Channel-Network Coding Strategies for Networks with Low Complexity Relays
Sarah J. Johnson, Lawrence Ong, Christopher M. Kellett
We investigate joint network and channel coding schemes for networks when relay nodes are not capable of performing channel coding operations. Rather, channel encoding is performed…
On Achievable Rate Regions of the Asymmetric AWGN Two-Way Relay Channel
Lawrence Ong, Christopher M. Kellett, Sarah J. Johnson
This paper investigates the additive white Gaussian noise two-way relay channel, where two users exchange messages through a relay. Asymmetrical channels are considered where the u…
The Finite Field Multi-Way Relay Channel with Correlated Sources: The Three-User Case
Lawrence Ong, Roy Timo, Gottfried Lechner +2
The three-user finite field multi-way relay channel with correlated sources is considered. The three users generate possibly correlated messages, and each user is to transmit its m…
The Capacity Region of Multiway Relay Channels Over Finite Fields with Full Data Exchange
Lawrence Ong, Sarah J. Johnson, Christopher M. Kellett
The multi-way relay channel is a multicast network where L users exchange data through a relay. In this paper, the capacity region of a class of multi-way relay channels is derived…
The Binary-Symmetric Parallel-Relay Network
Lawrence Ong, Sarah J. Johnson, Christopher M. Kellett
We present capacity results of the binary-symmetric parallel-relay network, where there is one source, one destination, and K relays in parallel. We show that forwarding relays, wh…
Capacity Theorems for the AWGN Multi-Way Relay Channel
Lawrence Ong, Christopher M. Kellett, Sarah J. Johnson
The L-user additive white Gaussian noise multi-way relay channel is considered, where multiple users exchange information through a single relay at a common rate. Existing coding s…