METHOD AND SYSTEM FOR TRAINING SEQUENCES
First Claim
1. A method for a remote unit of an orthogonal frequency division multiplexing multipoint-to-point communications system, the method comprising:
- establishing communication between a first remote unit of a plurality of remote units and a host unit, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration;
transmitting up to a plurality of tones from the first remote unit, the up to a plurality of tones modulated with upstream information using orthogonal frequency division multiplexing;
transmitting a training pattern from the first remote unit to the host unit on at least one of the up to a plurality of tones.
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Accused Products
Abstract
Methods and systems for training sequences are provided. In one embodiment, a bi-directional communication system comprises: a multipoint-to-point host unit; and a plurality of remote units communicatively coupled to the multipoint-to-point host unit through an orthogonal frequency division multiplexing waveform. The multipoint-to-point host unit is configured to receive the orthogonal frequency division multiplexing waveform, the orthogonal frequency division multiplexing waveform comprising a plurality of tones transmitted by the plurality of remote units. The plurality of remote units each transmit a training pattern to the host unit on at least one of the plurality of tones; and the multipoint-to-point host unit is configured to adjust demodulation of upstream information from the plurality of tones based on the training pattern.
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Citations
14 Claims
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1. A method for a remote unit of an orthogonal frequency division multiplexing multipoint-to-point communications system, the method comprising:
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establishing communication between a first remote unit of a plurality of remote units and a host unit, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration;
transmitting up to a plurality of tones from the first remote unit, the up to a plurality of tones modulated with upstream information using orthogonal frequency division multiplexing;
transmitting a training pattern from the first remote unit to the host unit on at least one of the up to a plurality of tones. - View Dependent Claims (2, 3, 4)
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5. A method for an orthogonal frequency division multiplexing multipoint-to-point communications system, the method comprising:
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establishing communication between a first remote unit of a plurality of remote units and a host unit, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration;
receiving an orthogonal frequency division multiplexing waveform at the host unit, the orthogonal frequency division multiplexing waveform comprising a plurality of tones transmitted by the plurality of remote units;
demodulating upstream information from the plurality of tones;
receiving a training pattern on at least one tone of the plurality of tones;
adjusting demodulation of upstream information from the plurality of tones based on the training pattern. - View Dependent Claims (6, 7, 8)
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9. A bi-directional communication system, the system comprising:
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a multipoint-to-point host unit; and
a plurality of remote units communicatively coupled to the multipoint-to-point host unit through an orthogonal frequency division multiplexing waveform;
wherein the multipoint-to-point host unit is configured to receive the orthogonal frequency division multiplexing waveform, the orthogonal frequency division multiplexing waveform comprising a plurality of tones transmitted by the plurality of remote units;
wherein the plurality of remote units each transmit a training pattern to the host unit on at least one of the plurality of tones; and
wherein the multipoint-to-point host unit is configured to adjust demodulation of upstream information from the plurality of tones based on the training pattern. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification