14 citations · 36 across the 26 of their papers we have counts for
28 papers
Spatial Limits of Fluid Antenna Systems
Amy S. Inwood, Peter J. Smith, Rajitha Senanayake +1
Continuous fluid antenna systems (CFASs) represent an upper bound on the spatial diversity performance of fluid antenna systems (FASs), achieved when antennas may be positioned any…
Analysis of Fluid Antenna Systems with Continuous Positioning and Spatial Correlation
Gayani Siriwardana, Peter J. Smith, Himal A. Suraweera +1
We analyze multi-user fluid antenna systems with continuous positioning over a track of length L under a spatial correlation model, where exact performance distributions become ana…
Performance Analysis of Movable Antenna Arrays
Gayani Siriwardana, Peter J. Smith, Himal A. Suraweera +1
This paper provides a thorough mathematical analysis of continuous movable antenna (MA) arrays. Focusing on the multiple antenna case, we consider a linear antenna array with multi…
Deep Learning-Based Computer Vision for Beam Selection and Proactive Blockage Prediction
Sachira Karunasena, Erfan Khordad, Tom Drummond +1
Millimeter-wave communication faces two critical challenges: propagation losses requiring costly narrow-beam alignment, and penetration losses causing link failures from blocked li…
Beam Squinting Effects in Super Wideband Communication Systems
Sachitha C. Bandara, Peter J. Smith, Erfan Khordad +3
Beam squint, the frequency-dependent shift of the main beam, poses a major challenge for wideband antenna arrays. This paper focuses on the beam squint effects in super wideband (S…
Dimensional Scaling Laws for Continuous Fluid Antenna Systems
Peter J. Smith, Amy S. Inwood, Michail Matthaiou +1
Consider the signal-to-noise ratio (SNR) of a continuous fluid antenna system (CFAS) operating over a Rayleigh fading channel. In this paper, we extend traditional system assumptio…
Target Detection with Tightly-coupled Antennas: Analysis for Unknown Wideband Signals
Erfan Khordad, Peter J. Smith, Sachitha C. Bandara +2
This paper presents analysis for target detection using tightly-coupled antenna (TCA) arrays with high mutual coupling (MC). We show that the wide operational bandwidth of TCAs is…
Dynamic Length FSK Waveforms for Joint Communications and Radar
Tian Han, Peter J Smith, Urbashi Mitra +3
Motivated by the constant modulus property of frequency shift keying (FSK) based waveforms and the stabilisation of its radar performance with an increase in the number of subpulse…
High SNR Probabilities of Continuous Fluid Antenna Systems in Ricean Environments
Amy S. Inwood, Peter J. Smith, Rajitha Senanayake +1
We consider a single-user (SU) continuous fluid antenna system (CFAS) employing matched filtering (MF) operating over a Ricean fading channel. Focusing on the upper tail of the rec…
Constant Modulus Waveforms for IoT-Centric Integrated Sensing and Communications
Tian Han, Shalanika Dayarathna, Rajitha Senanayake +5
Integrated sensing and communications (ISAC) is considered a key enabler to support application scenarios such as the Internet-of-Things (IoT) in which both communications and sens…
A Robust Nonparametric Framework for Detecting Repeated Spatial Patterns
Rajitha Senanayake, Pratheepa Jeganathan
Identifying spatially contiguous clusters and repeated spatial patterns (RSP) characterized by similar underlying distributions that are spatially apart is a key challenge in moder…
Joint Max-Min Power Control and Clustering in Cell-Free Wireless Networks: Design and Analysis
Achini Jayawardane, Rajitha Senanayake, Erfan Khordad +1
Cell-free wireless networks have attracted significant interest for their ability to eliminate cell-edge effects and deliver uniformly high service quality through macro-diversity.…
Deep Learning based Computer-vision for Enhanced Beamforming
Sachira Karunasena, Erfan Khordad, Thomas Drummond +1
Meeting the high data rate demands of modern applications necessitates the utilization of high-frequency spectrum bands, including millimeter-wave and sub-terahertz bands. However,…
Rician Channel Modelling for Super Wideband MIMO Communications
Sachitha C. Bandara, Peter J. Smith, Erfan Khordad +2
Recent developments in Multiple-Input-Multiple-Output (MIMO) technology include packing a large number of antenna elements in a compact array to access the bandwidth benefits provi…
Can FSK Be Optimised for Integrated Sensing and Communications?
Tian Han, Peter J Smith, Urbashi Mitra +2
Motivated by the ideal peak-to-average-power ratio and radar sensing capability of traditional frequency-coded radar waveforms, this paper considers the frequency shift keying (FSK…
OTFS based Joint Radar and Communication: Signal Analysis using the Ambiguity Function
Shalanika Dayarathna, Peter Smith, Rajitha Senanayake +1
Orthogonal time frequency space (OTFS) modulation has recently been identified as a suitable waveform for joint radar and communication systems. Focusing on the effect of data modu…
Integrated Sensing and Communications for IoT: Synergies with Key 6G Technology Enablers
Aryan Kaushik, Rohit Singh, Ming Li +7
The Internet of Things (IoT) and wireless generations have been evolving simultaneously for the past few decades. Built upon wireless communication and sensing technologies, IoT ne…
Performance Analysis of Relay Selection Schemes in Multi-Hop Decode-and-Forward Networks
Shalanika Dayarathna, Rajitha Senanayake, Jamie Evans
This paper analyses the data rate achieved by various relay selection schemes in a single-user multi-hop relay network with decode-and-forward (DF) relaying. While the single-user…
Towards Integrated Sensing and Communications for 6G: A Standardization Perspective
Aryan Kaushik, Rohit Singh, Shalanika Dayarathna +8
The radio communication division of the International Telecommunication Union (ITU-R) has recently adopted Integrated Sensing and Communication (ISAC) among the key usage scenarios…
A Modified Union Bound on Symbol Error Probability for Fading Channels
Tian Han, Rajitha Senanayake, Peter Smith +1
In this paper, we propose a new upper bound on the error probability performance of maximum-likelihood (ML) detection. The proposed approach provides a much tighter upper bound whe…
Frequency Permutation Subsets for Joint Radar and Communication
Shalanika Dayarathna, Rajitha Senanayake, Peter Smith +1
This paper focuses on waveform design for joint radar and communication systems and presents a new subset selection process to improve the communication error rate performance and…
Joint Relay Selection and Power Control that aims to Maximize Sum-Rate in Multi-Hop Networks
Shalanika Dayarathna, Rajitha Senanayake, Jamie Evans
Focusing on the joint relay selection and power control problem with a view to maximizing the sum-rate, we propose a novel sub-optimal algorithm that iterates between relay selecti…
Optimal Routing for Multi-user Multi-hop Relay Networks via Dynamic Programming
Shalanika Dayarathna, Rajitha Senanayake, Jamie Evans
In this paper, we study the relay selection problem in multi-user, multi-hop relay networks with the objective of minimizing the maximum outage probability across all users. When o…
Combined Radar and Communications with Phase-Modulated Frequency Permutations
Tian Han, Rajitha Senanayake, Peter Smith +3
This paper focuses on the combined radar and communications problem and conducts a thorough analytical investigation on the effect of phase and frequency change on the communicatio…