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1. US20120106605 - Detection and correction of impulse noise in communication channel crosstalk estimates

Office
United States of America
Application Number 12915743
Application Date 29.10.2010
Publication Number 20120106605
Publication Date 03.05.2012
Grant Number 09667450
Grant Date 30.05.2017
Publication Kind B2
IPC
H04B 1/38
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
H04L 5/16
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
14Two-way operation using the same type of signal, i.e. duplex
16Half-duplex systems; Simplex/duplex switching; Transmission of break signals
H04L 25/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
H04B 3/487
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
3Line transmission systems
02Details
46Monitoring; Testing
487Testing crosstalk effects
Applicants Alexei E. Ashikhmin
Alcatel Lucent
Philip Alfred Whiting
Inventors Alexei E. Ashikhmin
Philip Alfred Whiting
Agents Ryan, Mason & Lewis, LLP
Title
(EN) Detection and correction of impulse noise in communication channel crosstalk estimates
Abstract
(EN)

An access node of a communication system is configured to control crosstalk between channels of the system. A set of L distinct and linearly independent pilot signals is generated, with each pilot signal having length n, where n>L such that n−L linearly independent n-tuples are available for use in detection and correction of impulse noise. In an illustrative embodiment, the L pilot signals are mutually orthogonal. The L pilot signals are transmitted over respective ones of the channels, and one or more of the pilot signals as received over their respective channels are processed to detect the presence of impulse noise. A crosstalk estimate corrected for the detected impulse noise is generated and utilized to control crosstalk between two or more of the channels.