IP Library › Patent Application 11927379
Patent Application
App. No. 11/927,379

SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING

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Quick Facts
Patent No.
US None
App. No.
11/927,379
Filed
Oct 29, 2007
Art Unit
2461
USPC
370/210
Abstract

Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a method for ranging 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; comparing a phase of at least one ranging symbol received from at least one of the plurality of remote units with a phase of a symbol transmitted by the host; and transmitting an adjustment instruction instructing the at least one of the plurality of remote units to vary a phase of transmissions transmitted from the at least one of the plurality of remote units based on a difference in phase between the at least one ranging symbol and the symbol transmitted by the host unit.

Claims (7)

1 . A method for ranging, the method comprising:

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;

comparing a phase of at least one ranging symbol received from at least one of the plurality of remote units with a phase of a symbol transmitted by the host; and

transmitting an adjustment instruction instructing the at least one of the plurality of remote units to vary a phase of transmissions transmitted from the at least one of the plurality of remote units based on a difference in phase between the at least one ranging symbol and the symbol transmitted by the host unit.

2 . The method of claim 1 , further comprising:

transmitting an adjustment instruction instructing the at least one of the plurality of remote units to vary a phase of any symbols transmitted from the at least one of the plurality of remote units.

3 . The method of claim 1 , wherein the inverse Fourier transform is based on one of an inverse Fast Fourier Transform (FFT) and an inverse Discrete Fourier Transform (DFT).

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2015
From: COMMSCOPE EMEA LIMITED
To: COMMSCOPE TECHNOLOGIES LLC
Reel/Frame 037012/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2011
From: ADC TELECOMMUNICATIONS, INC.
To: HTC CORPORATION
Reel/Frame 026390/0167 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INVENTOR NAME THOMAS G. TUCKER AND EXECUTION DATE OF JOE HALL 01/31/1997 PREVIOUSLY RECORDED ON REEL 022071 FRAME 0467. ASSIGNOR(S) HEREBY CONFIRMS THE THOMAS C. TUCKER JOE HALL'S EXECUTION DATE: 01/21/1997. Recorded May 22, 2009
From: DAPPER, MARK J.; GEILE, MICHAEL J.; HILL, TERRANCE J.; ROBERTS, HAROLD A.; ANDERSON, BRIAN D.; BREDE, JEFFREY; WADMAN, MARK S.; KIRSCHT, ROBERT J.; HERRMANN, JAMES J.; FORT, MICHAEL J.; BUSKA, STEVEN P.; SOLUM, JEFF; ENFIELD, DEBRA LEA; BERG, DARRELL; SMIGELSKI, THOMAS; TUCKER, THOMAS C.; HALL, JOE; LOGAJAN, JOHN M.; BOUALOUANG, SOMVAY; LOU, HENG; ELPERS, MARK D.; DOWNS, MATT; FERRIS, TAMMY; OPOCZYNSKI, ADAM; RUSSELL, DAVID S.; NELSON, CALVIN G.; SAMANT, NIRANJAN R.; CHIAPPETTA, JOSEPH F.; SARNIKOWSKI, SCOTT
To: ADC TELECOMMUNICATIONS, INC.
Reel/Frame 022729/0029 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 8, 2009
From: DAPPER, MARK J.; GEILE, MICHAEL J.; HILL, TERRANCE J.; ROBERTS, HAROLD A.; ANDERSON, BRIAN D.; BREDE, JEFFREY; WADMAN, MARK S.; KIRSCHT, ROBERT J.; HERRMANN, JAMES J.; FORT, MICHAEL J.; BUSKA, STEVEN P.; SOLUM, JEFF; ENFIELD, DEBRA LEA; BERG, DARRELL; SMIGELSKI, THOMAS; TUCKER, THOMAS G.; HALL, JOE; LOGAJAN, JOHN M.; BOUALOUANG, SOMVAY; LOU, HENG; ELPERS, MARK D.; DOWNS, MATT; FERRIS, TAMMY; OPOCZYNSKI, ADAM; RUSSELL, DAVID S.; NELSON, CALVIN G.; SAMANT, NIRANJAN R.; CHIAPPETTA, JOSEPH F.; SARNIKOWSKI, SCOTT
To: ADC TELECOMMUNICATIONS, INC.
Reel/Frame 022071/0467 →