Aware, Inc.

Tq Delta, LLC

Tq Detla, LLC

Arnon Friedmann

Marcos Tzannes

Stuart D Sandberg

Jelena Jovin

Bindu Chandna

Richard W Gross

Mei Yong

Yan Yang

In a receiver transparent Q-mode, i.e., a Q-mode that is only implemented by a transmitter, the receiver is unaware of the Q-mode state of the transmitter. In this type of Q-mode configuration, the transmitter could enter and exit Q-mode as desired while the receiver, could, for example, continue to function as if operating normally, such as in 'showtime.' Through this approach, it is not necessary for the receiver to detect the transmitter's entry and exit of Q-mode.

Systems and methods for implementing receiver transparent Q-mode

A multicarrier transceiver can have a plurality of carriers and convert a bit stream into a plurality of parallel words for QAM on the plurality of carriers, a length of one of the plurality of parallel words for QAM on the plurality of carriers, a length of one of the plurality of parallel words corresponding to a number of bits modulated on an associated carrier of the plurality of carriers for the one of the plurality of parallel words, the transceiver further including an XOR scrambler that scrambles the plurality of parallel words, a QAM encoder tha maps all or part of each scrambled word to a QAM constellation point to generate a plurality of QAM constellation points, and a transmitter that transmits the plurality of QAM constellation points using the plurality of carriers.

Randomization using an XOR scrambler in multicarrier communications

Using a known or later developed time domain equalizer coefficient training algorithm, a least square solution for the time domain equalizer coefficients is taken at a starting point and iteratively improved on. In particular, the improvement is directed towards maximizing number of bits per frame loaded over the time domain equalizer coefficient choice. This can be accomplished by maximizing capacity directly rather than setting a goal to shorten the channel and hoping that the capacity will be maximized as a result.

Systems and methods that provide frequency domain supplemental training of the time domain equalizer for DMT

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

In a receiver transparent Q-mode, i.e., a Q-mode that is only implemented by a transmitter, the receiver is unaware of the Q-mode state of the transmitter. In this type of Q-mode configuration, the transmitter could enter and exit Q-mode as desired while the receiver, could, for example, continue to function as if operating normally, such as in &ldquo;showtime.&rdquo; Through this approach, it is not necessary for the receiver to detect the transmitter's entry and exit of Q-mode.

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Marlboro, MA, United States of America

Arnon Friedmann