A pre-emphasis filter system for in-building MPEG-2 video distribution

It is becoming popular that both residential and commercial buildings in a densely populated urban city have fibre cables laid from a central office to the basement of the building. Category 5 twisted pairs are then used for in-building distribution. This paper introduces a pre-emphasis filter system to distribute MPEG-2 videos within a building using category 5 twisted pairs. A novel technique is used to identify the frequency response of a twisted pair cable to obtain the necessary preamplification at the transmitter. Simulation results are obtained for both conventional and fractional tap-line pre-emphasis filters for a 1000 ft category 5 twisted pair. The proposed system can be used by telecom companies to provide video-on-demand, internet connection and other interactive multimedia services. The system can also be utilized by hotels, hospitals, recreation centres and corporations to deploy their private intranets, VOD and multimedia information systems. © 1998 John Wiley & Sons, Ltd.