Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Analysis of Adaptive Interference Cancellation Using Common-Mode Information in Wireline Communications | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 84956 11 pages doi 2007 84956 Research Article Analysis of Adaptive Interference Cancellation Using Common-Mode Information in Wireline Communications Thomas Magesacher Per Odling and Per Ola Borjesson Department of Information Technology Lund University . Box 118 22100 Lund Sweden Received 4 September 2006 Accepted 1 June 2007 Recommended by Ricardo Merched 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. Copyright 2007 Thomas Magesacher et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Transmission of information over copper cables is conventionally carried out by differential signalling. On physicallayer level this corresponds to the application of a voltage between the two wires of a pair. The .
