System and method for round trip delay adjustment in a multipoint-to-point orthogonal frequency division multiplexing system
US7408873B2 · kind B2 · utility
31Cited by
151References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 26, 2007 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Oct 26, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for round-trip-delay adjustment in a multipoint-to-point orthogonal frequency division multiplexing (OFDM) system are provided. In one embodiment, a method for multipoint-to-point communication comprises: receiving at a host a plurality of upstream symbols transmitted from a plurality of remote units, the upstream symbols transmitted on a plurality of orthogonal carriers modulated using an inverse Fourier transform; and determining respective round trip path delay values associated with each of at least two of the plurality of remote units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.