Signal Processing for Gigabit-Rate Wireline Communications: An Overview of the State of the Art and Research Challenges

Abstract

Signal processing played an important role in improving the quality of communications over copper cables in earlier digital subscriber line (DSL) technologies. Even more powerful signal processing techniques are required to enable a gigabit per second data rate in the upcoming fast access to subscriber terminals (G.fast.) standard. This new standard is different from its predecessors in many respects. In particular, G.fast will use a significantly higher bandwidth. At such a high bandwidth, crosstalk among different lines in a binder will reach unprecedented levels, which are beyond the capabilities of most efficient techniques for interference mitigation.