We show that the Gaussian multiple-access channel and the Gaussian broadcast channel are fundamentally related and are essentially duals of each other. The dual channels we consider have the same channel gains and the same noise power at all receivers. We show that the capacity region of a broadcast channel (both constant and fading) can be written in terms of the capacity region of the dual mu...

We derive the two-user capacity region with and without common information for a Gaussian broadcast channel with intersymbol interference, assuming colored Gaussian noise and an input power constraint. The proof is achieved by rst deening a similar channel model, the circular broadcast channel, which can be decomposed into a set of parallel degraded broadcast channels. The capacity region for p...

One way to broadcast a popular/hot video is to let multiple users share a few channels. The stress on the scarce channels can be alleviated without sacrificing viewer waiting time. One common approach is to partition the video into fixed-length segments, which are broadcast on several channels periodically. Two representative approaches are the Fast Broadcasting scheme and the PAGODA scheme, wh...

With the increasing popularity of portable wireless computers, mechanisms to ef-ciently transmit information to such clients are of signiicant interest. The environment under consideration is asymmetric in that the information server has much more bandwidth available, as compared to the clients. It has been proposed that in such systems the server should broadcast the information periodically. ...

Content delivery has undergone a sea of changes in recent years. While even only ten years back the major delivery channels were television and radio broadcast, nowadays content is delivered digitally via the Internet or other electronic delivery channels. The engineering problem of delivering multimedia content through the Internet has received much attention by the research community. However...

During the past years digital TV as a media consumption platform has more and more turned from a simple receiver and presenter of broadcast signals to an interactive and personalized media terminal, with access to traditional broadcast as well as internet-based services. Currently available TV panels offer integrated digital processing platforms, with access to standardized hybrid Web+TV (or Hy...

Convergence is one of the most popular buzzwords in the academic, research, and industrial fields. One of the most successful examples of convergence is Internet Protocol Television (IPTV), a convergence of communication and broadcast methodologies. In this study we introduce the ‘Open IPTV System’ that allows subscribers to easily open their own IPTV broadcasting station. We then investigated ...

The current computer technology enables us to build huge broadcast video archives which had been a future dream. Today, even the hard disk recorders on the market are capable of recording several hundred hours of broadcast video. It is naturally perceived that a huge amount of broadcast video would be a useful corpus for multimedia indexing and mining research. Based on this viewpoint, we desig...

With the increasing popularity of portable wireless computers, mechanisms to ef-ciently transmit information to such clients are of signiicant interest. The environment under consideration is asymmetric in that the information server has much more bandwidth available, as compared to the clients. It has been proposed that in such systems the server should broadcast the information periodically. ...