Low complexity equalization for burstmode communication in upstream CATV networks

The recent interest in the use of CATV networks for advanced telecommunication purposes has spurred research in modems for upstream communication. Signal disturbances along the upstream path necessitate the use of advanced signal processing methods. One of these disturbances is group delay distortion. This paper describes two algorithmic alternatives to solve this particular problem. I. Introduction Recently, coaxial cable networks have received much attention in the context of interactive applications [1], [4]. In countries with a high penetration of CATV (e.g. Belgium ? 90%), the cable network forms a viable alternative to classical telephone networks. Envisaged applications include telephony, interactive television, home-shopping, video-on-demand and high-speed internet browsing. The interactive nature of these services requires two-way communication on a network that initially was only intended for a one-way broadcasting of television signals. What is aimed at now, is a low bit-r..