- I. Shakya, F. H. Ali, “Higher than Unity Rate CDMA using Collaborative Spreading”, International Symposium on Communications Theory and Applications (ISCTA'09), Ambleside, UK, July 2009
- I. Shakya, F. H. Ali, E. Stipidis, “Improved Cooperative CDMA with Blind Adaptive Interference Cancellation”, IEEE International Workshop on Cooperative Wireless Communications and Networking (CONET) 2008
- I. Shakya, F. H. Ali, E. Stipidis, “Performance of Cooperative CDMA with Successive Interference Cancellation”, IEEE International Conference on Broadband Communications and Network Systems (BROADNETS) 2008
- F. H. Ali, I. Shakya, E. Stipidis, “User Cooperative Diversity for Multiuser CCMA”, IEEE International Symposium on Personal, Indoor and Mobile Radio communications (PIMRC'07), Athens, Greece, September 2007
- I. Shakya, F. H. Ali, E. Stipidis, “Performance of Joint User Cooperation Diversity and Successive Interference Cancellation for CDMA”, IEE Smart Antenna and Cooperative Communications Workshop, London, UK, October 2007
- I. Shakya, F. H. Ali, E. Stipidis, “Improved Successive Interference Cancellation for DS CDMA using constant modulus algorithm”, International Symposium on Communications Theory and Applications (ISCTA'07), Ambleside, UK, July 2007
- I. Shakya, F. H. Ali, E. Stipidis, “Simple Adaptive Sigma Delta Modulators for Software Defined Radio”, London Communications Symposium, September 2006
- I. Shakya, F. H. Ali, E. Stipidis, “Adaptive Sigma Delta Modulators for Fading Channels”, IEE International Conference of Advanced Data Converters, July 2005