Systems and method for orthogonal frequency divisional multiplexing

US7881181B2 · kind B2 · utility

Assignee

• ADC Telecommunications, Inc. · US

Inventors

• Mark J. Dapper · Cincinnati, US
• Michael J. Geile · Loveland, US
• Terrance J. Hill · Sharonville, US
• Harold A. Roberts · Eden Prairie, US
• Brian D. Anderson · Plymouth, US
• Jeffrey Brede · Eden Prairie, US
• Mark S. Wadman · Plymouth, US
• Robert J. Kirscht · Savage, US
• James J. Herrmann · Eagan, US
• Michael J. Fort · Eagan, US
• Steven P. Buska · Minnetonka, US
• Jeff Solum · Bloomington, US
• Debra Lea Enfield · Chaska, US
• Darrell Berg · Bloomington, US
• Thomas Smigelski · Lake Zurich, US
• Thomas C. Tucker · Chapel Hill, US
• Joe Hall · Winfield, US
• John M. Logajan · Arden Hills, US
• Somvay Boualouang · Bloomington, US
• Heng Lou · Bloomington, US
• Mark Elpers · Elk River, US
• Matt Downs · Bloomington, US
• Tammy Ferris · Bloomington, US
• Adam Opoczynski · Plano, US
• David S. Russell · Minneapolis, US
• Calvin G. Nelson · Shorewood, US
• Niranjan R. Samant · Lansdale, US
• Joseph F. Chiappetta · Trumbull, US
• Scott Sarnikowski · Plymouth, US

Key dates

• Filing date: Oct 29, 2007
• Grant date: Feb 1, 2011
• Expiry date: Mar 9, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02D30/50
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises: a receiver configured to receive a waveform comprising a plurality of spectrally overlapping carrier signals from at least two of a plurality of remotes, the carrier signals are modulated using an inverse Fourier transform; a transmitter; a processor coupled to the transmitter, the processor outputs data for transmission to the transmitter, the processor applies an inverse Fourier transform to the data provided to the transmitter; a controller programmed to instruct the transmitter to transmit timing adjustments to the at least two of the plurality of remotes, the timing adjustments instruct the at least two of the plurality of remotes to adjust transmission timing so that transmitted symbols associated with frames of a predetermined multiframe structure are received in sequence from the at least two of the plurality of remotes based on the structure.