S. Ranaweera, C. Weeraddana, P. Dharmawansa, and C. Fischione, ``On the convergence of inexact gradient discent with controlled synchronization steps", IEEE Signal Processing Letters, vol. 30, no. 5, pp. 703-707, May 2023.
P. Dharmawansa, P. Dissanayake, and Yang Chen, ``The eigenvectors of single-spiked complex Wishart matrices: Finite and asymptotic analyses ", IEEE Transactions on Information Theory, vol. 68, no. 12, pp. 8092-8120, Dec. 2022.
P. Dissanayake, P. Dharmawansa, and Yang Chen, ``Distribution of the scaled condition number of single-spiked complex Wishart matrices ", IEEE Transactions on Information Theory, vol. 68, no. 10, pp. 6716-6737, Oct. 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, vol. 10, no. 3, pp. 493-497, Mar. 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, vol. 66, no. 10, pp. 6413-6433, Oct. 2020.
S. Atapattu, R. Fan, P. Dharmawansa, G. Wang, J. Ivans, and T. A. Tsiftsis, ``Reconfigurable surface assisted two-way communications: Performance analysis and optimization", IEEE Transactions on Communications, vol. 68, no. 10, pp. 6552-6567, Oct. 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, vol. 174, 104524, Nov. 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, vol. 67, no. 2, pp. 955-972 , Feb. 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, vol. 21, no. 12, pp. 2754-2757, Dec. 2017.
P. Dharmawansa, ``Some new results on the eigenvalues of complex non-central Wishart matrices with a rank-one mean", Journal of Multivariate Analysis, vol. 149, pp. 30-53, Jul. 2016.
P. Dharmawansa, M. R. McKay, and Y. Chen, ``Distributions of Demmel and related condition numbers,” SIAM Journal on Matrix Analysis and Applications, vol. 34, no. 1, pp. 257-279, 2013.
L. Wei, P. Dharmawansa, and O. Tirkkonen, `` Multiple primary user spectrum sensing in the low SNR regime," IEEE Transactions on Communications, vol. 61, no. 5, pp. 1720-1731, May 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, vol. 62. no. 4, pp. 1610-1622, May 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, vol. 58, no. 6, pp. 3536-3547, Jun. 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, vol. 60, no. 7, pp. 1811-1822, Jul. 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, vol. 60, no, 5, pp. 1451-1463, May 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, vol. 59, no. 8, pp. 2119-2131, Aug. 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, vol. 102, pp. 847-868, Apr. 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, vol. 58, no. 7, pp. 2147-2158, Jul. 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, vol. 100, pp. 561-580, Apr. 2009.
P. Dharmawansa, R. M. A. P. Rajatheva, and C. Tellambura, ``Envelope and phase distributions of two correlated Gaussian variables," IEEE Transactions on Communications, vol. 57, no. 4, pp. 915-921, Apr. 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, vol. 57, no. 3, pp. 665-675, Mar. 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, vol. 57, no. 1, pp. 26-31, Jan. 2009.
P. Dharmawansa, R. M. A. P. Rajatheva, and C. Tellambura, ``On the trivariate Rician distribution," IEEE Transactions on Communications, vol. 56, no. 12, pp. 1993-1997, Dec. 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, vol. 6, no. 12, pp. 4320-4328, Dec. 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, vol. 55, no. 7, pp. 1407-1416, July 2007.
P. Dharmawansa and R. M. A. P. Rajatheva, ``Pairwise error probability of space-time codes in frequency selective Rician channels," IEEE Communications Letters, vol. 9, no. 10, pp. 894-896, Oct. 2005.