RANGING AND ROUND TRIP DELAY TIMING ADJUSTMENT IN A MULTI-POINT TO POINT BIDIRECTIONAL COMMUNICATION SYSTEM
First Claim
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1. A bidirectional communication system, the system comprising:
- a host unit to communicate with a plurality of remote units using orthogonal frequency division multiplexing (OFDM), wherein upstream OFDM signals from at least two of the plurality of remote units combine to a unified OFDM waveform of adjacent spectrally overlapping carriers at the host unit, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration; and
wherein the host unit is configured to adjust a round trip path delay associated with at least one of the plurality of remote units.
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Abstract
A bidirectional communication system is provided. In one embodiment, a system comprises a host unit to communicate with a plurality of remote units using orthogonal frequency division multiplexing (OFDM), the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration; and wherein the host unit is configured to adjust a round trip path delay associated with at least one of the plurality of remote units.
138 Citations
16 Claims
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1. 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 (OFDM), wherein upstream OFDM signals from at least two of the plurality of remote units combine to a unified OFDM waveform of adjacent spectrally overlapping carriers at the host unit, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration; and wherein the host unit is configured to adjust a round trip path delay associated with at least one of the plurality of remote units. - View Dependent Claims (2, 3, 4, 5)
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6. A bidirectional communication system, the system comprising:
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a first remote unit for communicating with a host unit, the host unit communicatively coupled to a plurality of remote units through an orthogonal frequency division multiplexing (OFDM) waveform in a multipoint-to-point configuration, wherein adjacent spectrally overlapping carriers from at least two of the plurality of remote units combine to a unified OFDM waveform at the host unit; wherein the first remote unit is configured to adjust a round trip path delay between the first remote unit and the host unit. - View Dependent Claims (7, 8, 9, 10)
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11. A bi-directional communication system, the system comprising:
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a multipoint-to-point host unit; a plurality of remote units communicatively coupled to the multipoint-to-point host unit through an orthogonal frequency division multiplexing (OFDM) waveform, wherein adjacent spectrally overlapping carriers from at least two of the plurality of remote units combine to a unified OFDM waveform at the host unit; wherein the multipoint-to-point host unit is configured to estimate a round trip path delay associated with each of the plurality of remote units; and wherein the multipoint-to-point host unit is configured to adjust the round trip path delay associated with at least one of the plurality of remote units. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification