Analysis of Adaptive Interference Cancellation Using Common-Mode Information in Wireline Communications

Thomas Magesacher, Per Ödling, Per Ola Börjesson

Research output: Contribution to journalArticlepeer-review

6 Citations (SciVal)

Abstract

Joint processing of common-mode (CM) and differential-mode (DM) signals in wireline transmission can yield significant improvements in terms of throughput compared to using only the DM signal. Recent work proposed the employment of an adaptive CM-reference-based interference canceller and reported performance improvements based on simulation results. This paper presents a thorough investigation of the cancellation approach. A subchannel model of the CM-aided wireline channel is presented and the Wiener solutions for different adaptation strategies are derived. It is shown that a canceller, whose coefficients are adapted while the far-end transmitter is silent, yields a signal-to-noise power ratio (SNR) that is higher than the SNR at the DM channel output for a large class of practically relevant cases. Adaptation while the useful far-end signal is present yields a front-end whose output SNR is considerably lower compared to the SNR of the DM channel output. The results are illustrated by simulations based on channel measurement data.
Original languageEnglish
Article number84956
JournalEurasip Journal on Advances in Signal Processing
DOIs
Publication statusPublished - 2007

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

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