Contact information
Teaching and Administrative Activities
Research Coordinator - Coordinate and promote departmental research activities (2021 To 2023)
Student counselor -Help students succeed both academically and socially (2021 To 2023)
Research Activities
Communication theory
Signal processing
Random matrix theory
Multivariate statistics
Communication theory, Signal processing and Random matrix theory
Education and Professional Affiliations
D.Eng, AIT ,2007 Information and Communication Technology
IEEE(2005 To 2021)
Career
I serve as an Associate Editor for the (Q1) journal.
Honours and Awards
IEEE ICC Best Paper Award in Communication Theory (Received 2011)
Publications*
P. Dissanayake, P. Dharmawansa, and Yang Chen,".Distribution of the scaled condition number of single-spiked complex Wishart matrices.",IEEE Transactions on Information Theory (Q1),vol. 68/no. 10,2022
P. Dharmawansa, P. Dissanayake, and Yang Chen,".`The eigenvectors of single-spiked complex Wishart matrices: Finite and asymptotic analyses .",IEEE Transactions on Information Theory (Q1),vol. 68/no. 12,2022
P. Dharmawansa, S. Atapattu, and M. Di Renzo,".Performance analysis of a two-tiled reconfigurable intelligent surface assisted 2*2 MIMO system.",IEEE Wireless Communications Letters (Q1),10,2021
L. D. Chamain, P. Dharmawansa, S. Atapattu and C. Tellambura,,".Eigenvalue-Based Detection of a Signal in Colored Noise: Finite and Asymptotic Analyses.",IEEE Transactions on Information Theory (Q1),66,2020
S. Atapattu, R. Fan, P. Dharmawansa, G. Wang, J. Evans and T. A. Tsiftsis,".Reconfigurable Intelligent Surface Assisted Two鈥揥ay Communications: Performance Analysis and Optimization.",IEEE Transactions on Communications (Q1),68,2020
P. Dharmawansa, B. Nadler, and O. Shwartz,".Roy's largest root under rank-one perturbation: The complex valude case and applications.",Journal of Multivariate Analysis (Q1),174,2019
S. Atapattu, P. Dharmawansa, M. Di Renzo, C. Tellambura, and J. Evans,".Multi-user relay selection for full-duplex radio.",IEEE Transactions on Communications (Q1),67,2019
S. Atapattu, P. Dharmawansa, C. Tellambura, and J. Ivans,".Exact outage analysis of multiple-user down link with MIMO matched-filter precoding.",IEEE Communications Letters (Q1),21,2017
P. Dharmawansa,".Some new results on the eigenvalues of complex non-central Wishart matrices with a rnk-one mean.",Journal of Multivariate Analysis (Q1),149,2016
P. Dharmawansa, M. R. McKay, and Y. Chen,".Distributions of Demmel and related condition numbers.",SIAM Journal on Matrix Analysis and Applications (Q1) ,34,2013
L. Wei, P. Dharmawansa, and O. Tirkkonen,".Multiple primary user spectrum sensing in the low SNR regime.",IEEE Transactions on Communications (Q1),61,2013
L. K. S. Jayasinghe, N. Rajatheva, P. Dharmawansa, and M. Latva-Aho,".Noncoherent amplify-and-forward relaying with OSTBC over Rayleigh-Rician fading channels.", IEEE Transactions on Vehicular Technology (Q1),62,2013
P. Dharmawansa, M. R. McKay, and P. J. Smith,".Generalized framework for the level crossing analysis of ordered random processes.",IEEE Transactions on Information Theory (Q1),58,2012
L. Vijayandran, P. Dharmawansa, T. Ekman, and C. Tellambura,".Analysis of aggregate interference and primary system performance in finite area cognitive radio networks.",IEEE Transactions on Communications (Q1),60,2012
Y. Liu, P. Dharmawansa, M. R. McKay, and K. B. Letaief,".Finite-SNR diversity-multiplexing trade-off and power allocation of dual hop multiple-relay channels.",IEEE Transactions on Communications (Q1),60,2012
P. Dharmawansa, M. R. McKay, R. K. Mallik, and K. B. Letaief,".Ergodic capacity and beamforming optimality for multi-antenna relaying with statistical CSI.",IEEE Transactions on Communications (Q1),59,2011
P. Dharmawansa and M. R. McKay,".Extreme eigenvalue distributions of some complex correlated non-central Wishart and gamma-Wishart random matrices.",Journal of Multivariate Analysis (Q1),102,2011
P. Dharmawansa, M. R. McKay, and R. K. Mallik,".Analytical Performance of amplify-and-forward relaying with orthogonal space-time block codes.",IEEE Transactions on Communications (Q1),58,2010
P. Dharmawansa and M. R. McKay,".Diagonal distribution of a 3*3 complex non-central Wishart matrix: A new trivariate non-central Chi-square density.",Journal of Multivariate Analysis (Q1),100,2009
P. Dharmawansa, R. M. A. P. Rajatheva, and C. Tellambura,".Envelope and phase distributions of two correlated Gaussian variables.",IEEE Transactions on Communications (Q1),57,2009
P. Dharmawansa, R. M. A. P. Rajatheva, and C. Tellambura,".New series representations for the trivariate non-Central Chi-squared distribution.",IEEE Transactions on Communications (Q1),57,2009
P. Dharmawansa, R. M. A. P. Rajatheva, and H. Minn,".An exact error probability analysis of OFDM systems with frequency offset.",IEEE Transactions on Communications (Q1),57,2009
P. Dharmawansa, R. M. A. P. Rajatheva, and C. Tellambura,".On the trivariate Rician distribution.",IEEE Transactions on Communications (Q1),57,2008
P. Dharmawansa, R. M. A. P. Rajatheva, and C. Tellambura,".Infinite series representations of the trivariate and quadrivariate Nakagami-m distributions.",IEEE Transactions on Wireless Communications (Q1),6,2007
P. Dharmawansa, R. M. A. P. Rajatheva, and K. M. Ahmed,".On the distribution of the sum of Nakagami-m variables.",IEEE Transactions on Communications (Q1),55,2007
P. Dharmawansa and R. M. A. P. Rajatheva,".Pairwise error probability of space-time codes in frequency selective Rician channels.",IEEE Communications Letters (Q1),9,2005
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