Nihal K. G. Samaraweera

Learn More
When a wireless link forms a part of a network, the rate of packet loss due to link noise may be considerably higher than observed in a modern terrestrial network. This paper studies TCP performance over a range of link environments and highlights the advantage of recent modifications to TCP (e.g. SACK, New-Reno) for wireless communications. It also(More)
Satellite based Digital Video Broadcasting (DVB-S) allows the same low cost satellite dish to receive both television programs and Internet traffic. The satellite system is used to construct a high-speed simplex distribution system, while the return path, needed for the Internet service will be provided using a low speed terrestrial network. The bandwidth(More)
Digital Video Broadcasting (DVB) provides the opportunity for high-speed Internet delivery direct to user's homes and offices. Most applications require full duplex communication, and the return path from the user to the Internet will be provided using lower speed terrestrial connections. Two challenges are presented when using DVB for high-speed Internet(More)
As a relevant exemplar of MPEG-1 and MPEG-2 digital video use, a multimedia computer-assisted learning (CAL) application dealing with Critical Communication Issues in medicine was developed. The application allowed the student to navigate through a series of high-quality digital video and audio clips that were delivered in near real-time from an Intranet(More)
Acknowledgments This work was performed under the JISC/JTAP 288 programme with funding from the Joint Information Systems Committee (JISC) of the Higher Education Funding Councils. The author particularly wishes to thank Dr Samaraweera for his contribution to this work and the effort in design and production of the TimeLine video clip delivery protocol.(More)
  • 1