Systems and methods for orthogonal frequency division multiplexing

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8406115
APP PUB NO 20110242963A1
SERIAL NO

13158322

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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 spectrally overlapping carrier signals from at least two of a plurality of remotes, wherein the spectrally overlapping carrier signals are modulated using an inverse Fourier transform algorithm; a transmitter; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform algorithm to the data provided to the transmitter; a controller programmed to calculate an elapsed time for each of the two remotes, the elapsed time representing a time between transmitting a ranging signal to a remote and receiving a signal from the remote in response to the ranging signal; the controller further programmed to reducing any difference between at least two elapsed times by instructing at least one of the plurality of remotes to adjust a delay.

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Patent Owner(s)

  • HTC CORPORATION

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Anderson, Brian D Plymouth, US 84 2838
Berg, Darrell Bloomington, US 36 1235
Boualouang, Somvay Bloomington, US 35 1202
Brede, Jeffrey Savage, US 89 3968
Buska, Steven P Minnetonka, US 36 1356
Chiappetta, Joseph F Trumbull, US 45 1385
Dapper, Mark J Cincinnati, US 57 2596
Downs, Matt Bloomington, US 34 1181
Elpers, Mark D Elk River, US 67 2420
Enfield, Debra Lea Chaska, US 35 1182
Ferris, Tammy Bloomington, US 34 1215
Fort, Michael J Pelham, US 76 3127
Geile, Michael J Batavia, US 146 6344
Hall, Joe Bloomington, US 40 1259
Herrmann, James J Eagan, US 48 1454
Hill, Terrance J Fairfield, US 41 1259
Kirscht, Robert J Savage, US 68 2531
Logajan, John M Arden Hills, US 36 1242
Lou, Heng Bloomington, US 41 1581
Nelson, Calvin G Shorewood, US 37 1783
Opoczynski, Adam Plano, US 40 1618
Roberts, Harold A Eden Prairie, US 94 3135
Russell, David S Minneapolis, US 43 2617
Samant, Niranjan R Middletown, US 42 1473
Sarnikowski, Scott Plymouth, US 38 1336
Smigelski, Thomas Lake Zurich, US 45 1545
Solum, Jeff Bloomington, US 46 2357
Tucker, Thomas C Chapel Hill, US 33 1146
Wadman, Mark S Plano, US 44 1474

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