Inventors:
Mark Dapper - Cincinnati OH, US
Michael Geile - Loveland OH, US
Terrance Hill - Fairfield OH, US
Harold Roberts - Eden Prairie MN, US
Brian Anderson - Plymouth MN, US
Jeffrey Brede - Eden Prairie MN, US
Mark Wadman - Plano TX, US
Robert Kirscht - Savage MN, US
James Herrmann - Eagan MN, US
Michael Fort - Eagan MN, US
Steven Buska - Minnetonka MN, US
Jeff Solum - Bloomington MN, US
Debra Enfield - Chaska MN, US
Darrell Berg - Bloomington MN, US
Thomas Smigelski - Lake Zurich IL, US
Thomas Tucker - Chapel Hill NC, US
Joe Hall - Bloomington MN, US
John Logajan - Arden Hills MN, US
Somvay Boualouang - Bloomington MN, US
Heng Lou - Bloomington MN, US
Mark Elpers - Elk River MN, US
Matt Downs - Bloomington MN, US
Tammy Ferris - Bloomington MN, US
Adam Opoczynski - Plano TX, US
David Russell - Minneapolis MN, US
Calvin Nelson - Shorewood MN, US
Niranjan Samant - Middletown CT, US
Joseph Chiappetta - Trumbull CT, US
Scott Sarnikowski - Plymouth MN, US
Assignee:
ADC TELECOMMUNICATIONS, INC. - Eden Prairie MN
International Classification:
H04K 1/10, H04J 11/00
Abstract:
Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprising: a receiver configured to de-modulate symbols from at least one of a plurality of spectrally overlapping carrier signals; a transmitter configured to modulate symbols onto at least one of a plurality of the spectrally overlapping carrier signals; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform to the data transmitted by the transmitter; and a controller programmed to instruct the transmitter to transmit a coarse timing adjustment followed by at least one secondary timing adjustment, wherein the secondary timing adjustment is a fine tuning adjustment with respect to the coarse timing adjustment.