SYSTEM FOR ORDERWIRE MODULATION
First Claim
1. A bidirectional communication system, the system comprising:
- a first remote unit for communicating with a host unit using orthogonal frequency division multiplexing, the host unit communicatively coupled to a plurality of remote units in a multipoint-to-point configuration;
wherein the first remote unit is configured to transmit up to a plurality of tones, the up to a plurality of tones modulated with upstream information using orthogonal frequency division multiplexing; and
wherein the first remote unit is configured to modulate at least one tone of the up to a plurality of tones with payload data using a first modulation scheme, and modulate at least one tone of the up to a plurality of tones with control data using a second modulation scheme, the second scheme more robust than the first modulation scheme.
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Accused Products
Abstract
Systems for orderwire modulation are provided. In one embodiment, a bidirectional communication system comprises a first remote unit for communicating with a host unit using orthogonal frequency division multiplexing, the host unit communicatively coupled to a plurality of remote units in a multipoint-to-point configuration; wherein the first remote unit is configured to transmit up to a plurality of tones, the up to a plurality of tones modulated with upstream information using orthogonal frequency division multiplexing; and wherein the first remote unit is configured to modulate at least one tone of the up to a plurality of tones with payload data using a first modulation scheme, and modulate at least one tone of the up to a plurality of tones with control data using a second modulation scheme, the second scheme more robust than the first modulation scheme.
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Citations
16 Claims
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1. A bidirectional communication system, the system comprising:
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a first remote unit for communicating with a host unit using orthogonal frequency division multiplexing, the host unit communicatively coupled to a plurality of remote units in a multipoint-to-point configuration;
wherein the first remote unit is configured to transmit up to a plurality of tones, the up to a plurality of tones modulated with upstream information using orthogonal frequency division multiplexing; and
wherein the first remote unit is configured to modulate at least one tone of the up to a plurality of tones with payload data using a first modulation scheme, and modulate at least one tone of the up to a plurality of tones with control data using a second modulation scheme, the second scheme more robust than the first modulation scheme. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A bidirectional communication system, the system comprising:
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a host unit to communicate with a plurality of remote units using orthogonal frequency division multiplexing, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration;
the host unit receiving an orthogonal frequency division multiplexing waveform, the orthogonal frequency division multiplexing waveform comprising a plurality of tones transmitted by the plurality of remote units; and
wherein the host unit is configured to demodulate payload data from at least one tone of the plurality of tones based on a first modulation scheme, and demodulate control data from at least one tone of the plurality of tones based on a second modulation scheme. - View Dependent Claims (9, 10, 11, 12, 13)
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14. 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 are configured to modulate at least one tone of the plurality of tones using a first modulation scheme for transmitting payload data, and modulate at least one tone of the plurality of tones using a second modulation scheme for transmitting control data. - View Dependent Claims (15, 16)
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Specification