Method for multiple use subchannels
US8213398B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2009 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Sep 16, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing (OFDM) are provided. In one embodiment, a remote unit for communicating with a host unit using OFDM is provided, the host unit communicatively coupled to a plurality of remote units in a multipoint-to-point configuration. The remote unit comprises a modulator for modulating up to a plurality of tones with upstream information using orthogonal frequency division multiplexing, wherein the modulator is configured to adjust a carrier frequency and timing of the plurality of tones such that spectrally overlapping tones transmitted from the remote unit and at least one other remote unit of the plurality of remote units are orthogonal and combine to form an OFDM waveform when received at the host; and wherein a first tone of the plurality of tones carries both control data and payload data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.