Aware, Inc.

Tq Delta, LLC

Gte Laboratories Incorporated

Daphimo Co., B.v., LLC

Other

Lantiq Deutschland Gmbh

Intellectual Ventures II LLC

Lantiq Beteiligungs Gmbh & Co. Kg

Richard W Gross

Michael A Tzannes

John A Greszczuk

Halil Padir

Marcos Tzannes

David M Krinsky

David C Hunter

Stuart D Sandberg

Robert Olshansky

Arnon Friedmann

Mei Yong

Yan Yang

Vladimir Oksman

Joon Bae Kim

Peter N Heller

Christopher Cahill

Pramod Pandey

Marcos C Tzannes

Peter Heller

A multicarrier transceiver is provided with a sleep mode in which it idles with reduced power consumption when it is not needed to transmit or receive data. The full transmission and reception capabilities of the transceiver are quickly restored when needed, without requiring the full (and time-consuming) initialization commonly needed to restore such transceivers to operation after inactivity.

Multicarrier transmission system with low power sleep mode and rapid-on capability

Described herein are techniques related to the generation of data blocks that collectively include padding appended before a first or after a last of the data blocks. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Padding after channel encoding repetition and interleaving

A stable Low Power Mode (LPM) for multicarrier transceivers is described that at least provides transmit power savings while enabling receiver designs that can easily operate without the detrimental effects of fluctuating crosstalk. In one exemplary embodiment, the LPM achieves power savings by reducing the number of used subcarriers without actually performing a power cutback on those subcarriers, thereby allowing a receiver to measure the SNR or noise levels and determine the crosstalk noise on the line regardless of a crosstalking modem being in a LPM or not.

Stable low power mode for multicarrier transceivers

A modem for use in Digital Subscriber Line communications transmits and receives data over the local subscriber loop in common with voice information over the loop, while avoiding the need for voice/data splitters. The modem responds to disruptions associated with 'disturbance events' such as on-hook to off-hook transitions and the like by rapidly switching between pre-stored channel parameter control sets defining communications over the loop under varying conditions. In addition to changing parameter control sets responsive to a disturbance event, the modem may also change transmission power levels and other system parameters such as frequency domain equalizer characteristics. Further, provisions are made for reduced bandwidth communications under selected conditions.

Splitterless multicarrier modem

A transceiver and method for communicating over a communications channel having a plurality of subchannels are described. In particular, the transceiver is capable of dynamically switching between communicating data for a first active application set and communicating data for a second different active application set. An active application set is defined as the set of one or more active applications for which the transceiver is currently communicating data. As part of communicating data for the first active application set, the transceiver allocates the subchannels to the one or more applications in the first application set. The transmission requirements of the first active application set defines a first communication state of the transceiver. When the transceiver dynamically transitions to communicating data for the second different application set, the transceiver reallocates the subchannels to the one or more applications in the second different application set. The transmission requirements of the second different active application set defines a second communication state of the transceiver. In one embodiment the transceiver modifies the data rates of subchannels in the Bit Allocation Table according to the transmission requirements of the application whose data is being transmitted on the particular subchannel. In another embodiment, the transceiver is capable of dynamically switching from transmitting data for an Internet access application to transmitting data for a voice telephony application in addition to the Internet access application. In a further embodiment, the ABCD voice telephony signaling bits can be transmitted with either the data from the Internet access application or the data from the voice telephony application.

Method and a multi-carrier transceiver supporting dynamic switching between active application sets

Through the use of feedback in determining frequency domain equalization, intersymbol interference can be reduced. Specifically, the determined constellation point closest to the determined received point can be fed back to aid in determining one or more other closest constellation points.

Systems and methods for multicarrier modulation using multi-tap frequency-domain equalizer and decision feedback

Growing community of inventors

Acton, MA, United States of America

Richard W Gross