1
Cioffi John M, Bingham John A C: Method and apparatus for echo cancellation of a multicarrier signal.. Telebit, August 12, 1992: EP0498369-A2 (48 worldwide citation)

When the transmitter and receiver of a duplex multicarrier modem are connected to a two-wire line, echoes of the transmitted signal are reflected back into the receiver by mismatches between the output impedance of the modem and the input impedance of the line. These echoes are cancelled by an echo ...


2
Cioffi John M: Adaptive fec codeword management. Adaptive Spectrum &Amp, Signal, September 13, 2006: EP1700410-A1 (35 worldwide citation)

Adaptive FEC coding is used to adjust the codeword composition of FEC codewords in a communication system. A codeword composition ratio may be adjusted in response to variance of a measured transmission error value from a target transmission error value in the system. The codeword composition ratio ...


3
Cioffi John M, Ginis Georgios: Dynamic minimum-memory interleaving. Adaptive Spectrum And Signal Alignment, Cioffi John M, Ginis Georgios, CALDWELL Gregory D, December 28, 2006: WO/2006/136883 (26 worldwide citation)

Minimum-memory-implementation is available with any depth and period in DSL interleaving/deinterleaving, always allowing the minimum amount of memory to be used in both transmitter and receiver without loss of performance or of basic triangular structure, even if the interleaver/deinterleaver parame ...


4
Cioffi John M, Ginis George, Rhee Wonjong, Brady Mark H, Silverman Peter J: Vectored dsl system. Adaptive Spectrum And Signal Alignment, Cioffi John M, Ginis George, Rhee Wonjong, Brady Mark H, Silverman Peter J, CALDWELL Gregory D, December 21, 2007: WO/2007/146048 (13 worldwide citation)

An apparatus comprises at least one vectoring engine (1511; 1512) and a cross-connect (1520) coupled to the vectoring engine (1511; 1512). The cross-connect (1520) is to couple with each of a plurality of customer premises equipment (CPE) devices (1541; 1592; 1543; 1544) via a respective DSL loop (1 ...


5
Cioffi John M: Fext determination system. Adaptive Spectrum And Signal Alignment, Cioffi John M, December 1, 2005: WO/2005/114861 (10 worldwide citation)

Operational data is utilized to determine the FEXT interference induced by one line into the other DSL line. FEXT interference can be calculated using the NEXT interference measured between the two lines at the upstream ends of the loops and the downstream channel transfer function of one of the loo ...


6
Cioffi John M, Rhee Wonjong, Lee bin, Ginis Georgios: Dsl system training. Adaptive Spectrum And Signal Alignment, Cioffi John M, Rhee Wonjong, Lee bin, Ginis Georgios, CALDWELL Gregory D, December 7, 2006: WO/2006/129140 (9 worldwide citation)

Existing and future standardized VDSL2 and other systems can be integrated into and used with a vectored DSLAM or other vectored or non-vectored DSL system, without a new user disrupting service to other users in the same or a nearby binder, in some cases by using transmit power, CARMASK and/or PSDM ...


7
Cioffi John M, Rhee Wonjong: Incentive-based dsl system. Adaptive Spectrum And Signal Alignment, Cioffi John M, Rhee Wonjong, December 1, 2005: WO/2005/114924 (8 worldwide citation)

Improved DSL and/or other communication system services can be provided by motivating users, service providers and operators to implement and comply with one or more operational conditions, such as parameter value limits and/or ranges, that enhance operation of the communication system. Enhanced ope ...


8
Cioffi John M, Ginis Georgios: Vectored dsl nesting. Adaptive Spectrum And Signal Alignment, Cioffi John M, Ginis Georgios, CALDWELL Gregory D, December 14, 2006: WO/2006/131791 (8 worldwide citation)

Methods, apparatus, systems and computer program products address one-sided vectoring systems that include a bonded-line set having two or more bonded DSL lines within a vectored group wherein other techniques such as precoding, tonal predictive GDFEs, tonal rotors and ordering techniques can be imp ...


9
Cioffi John M, Rhee Wonjong, Ginis George, Jagannathan Sumanth: Method and apparatus for analyzing and mitigating noise in a digital subscriber line. Adaptive Spectrum And Signal Alignment, Cioffi John M, Rhee Wonjong, Ginis George, Jagannathan Sumanth, CALDWELL Gregory D, February 7, 2008: WO/2008/016585 (7 worldwide citation)

Data indicative of a level of stability of a DSL link is received. Based on the received data, it is determined whether the data indicates a level of stability of the DSL link that is above or below a minimum threshold. If the level of stability of the DSL link is below the minimum threshold, die no ...


10
Rhee Wonjong, Brady Mark H, Cioffi John M: Dsl system estimation including known dsl line scanning and bad splice detection capability. Adaptive Spectrum And Signal Alignment, Rhee Wonjong, Brady Mark H, Cioffi John M, CALDWELL Gregory D, September 8, 2006: WO/2006/092730 (6 worldwide citation)

Estimates of a communication system configuration, such as a DSL system, are based on operational data collected from a network element management system, protocol, users and/or the like. The operational data collected from the system can include performance­characterizing operational data that typi ...