Sensor Network, Interconnected Cellular/ WLANs systems, Channel estimation for ST    
systems, Real time traffic over WLANs, Routing for Ad Hoc WLANs, Blind  FEC acquisition of SS codes, Blind channel estimation, Admission and congestion control for interconnected Macro/ Micro systems, Slot Allocation policies in EGPRS, Admission and Congestion Control for GSM, EDGE and GPRS systems. Problems in ATM/IP switching for QoS Internet, Multicast over MPLS Platforms, Optimal selection of FEC Routers for IP Multicast, Smart Antennas for 3G CDMA Systems, Real Time Traffic Accommodation over Wireless LANs, Power Budget for Software Radio systems, Roaming for Dynamic Soft Radio Systems, Scalable congestion control for MPEG sources over the Internet, GPS based Routing techniques for Ad-Hoc  Interconnected Wireless LANs, DNS based Routing techniques for Ad-Hoc  Interconnected Wireless LANs, Clustering techniques for  software Radios, FEC techniques for wireless LANs ( IEEE 802.11  modifications), FEC/ARQ and cell concealment techniques for ATM, Scalable FEC techniques for QoS guarantee over the wire based IP, Server design for the MYMAR system (Mobile Yellow Page Messaging and  retrieval, a  new concept in Wireless IP for which  a prototype has been   tested successfully in the field ), On Board Satellite Switching, CDMA Systems , Spread Spectrum Code Acquisition ,Modulation,  and Multiuser detection.

Delay and throughput characteristics of TH, CDMA, TDMA, and hybrids for multipath faded data transmission channels; Mobile Satellite and Terrestrial Networks, Hybrid Access Techniques, the GSM system and adaptive CDMA/TDMA systems; ARQ Techniques in DS, and FH CDMA systems; Combined Multidetection/Single Detection in CDMA Systems; Congestion and admission control in ATM/CDMA networks using transport window flow techniques; priorterized non-blocking switches for onboard satellite switching CDMA application to networks; optical wideband ISDN, priority and routing aspects; chirp and hybrid chirp signals, new acquisitionless SUGAR systems; cancatenated coding speech encryption systems; and Hybrid TH/DS systems and multicoding modified erasure systems.