tailieunhanh - Báo cáo hóa học: " Partial Crosstalk Cancellation for Upstream VDSL Raphael Cendrillon"

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: Partial Crosstalk Cancellation for Upstream VDSL Raphael Cendrillon | EURASIP Journal on Applied Signal Processing 2004 10 1520-1535 2004 Hindawi Publishing Corporation Partial Crosstalk Cancellation for Upstream VDSL Raphael Cendrillon Department of Electrical Engineering Katholieke Universiteit Leuven Kasteelpark Arenberg 10 Leuven-Heverlee 3001 Belgium Email Marc Moonen Department of Electrical Engineering Katholieke Universiteit Leuven Kasteelpark Arenberg 10 Leuven-Heverlee 3001 Belgium Email George Ginis Texas Instruments 2043 Samaritan Drive San Jose CA 95124 USA Email gginis@ Katleen Van Acker Alcatel Bell Francis Wellesplein 1 Antwerp 2018 Belgium Email acker@ Tom Bostoen Alcatel Bell Francis Wellesplein 1 Antwerp 2018 Belgium Email Piet Vandaele Alcatel Bell Francis Wellesplein 1 Antwerp 2018 Belgium Email Received 5 March 2003 Crosstalk is a major problem in modern DSL systems such as VDSL. Many crosstalk cancellation techniques have been proposed to help mitigate crosstalk but whilst they lead to impressive performance gains their complexity grows with the square of the number of lines within a binder. In binder groups which can carry up to hundreds of lines this complexity is outside the scope of current implementation. In this paper we investigate partial crosstalk cancellation for upstream VDSL. The majority of the detrimental effects of crosstalk are typically limited to a small subset of lines and tones. Furthermore significant crosstalk is often only seen from neighbouring pairs within the binder configuration. We present a number of algorithms which exploit these properties to reduce the complexity of crosstalk cancellation. These algorithms are shown to achieve the majority of the performance gains of full crosstalk cancellation with significantly reduced run-time complexity. Keywords and phrases DSL interference cancellation reduced complexity partial .

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