CA2064975A1 - Method and apparatus for multiple access between transceivers in wireless communications using ofdm spread spectrum - Google Patents

Method and apparatus for multiple access between transceivers in wireless communications using ofdm spread spectrum

Info

Publication number
CA2064975A1
CA2064975A1 CA2064975A CA2064975A CA2064975A1 CA 2064975 A1 CA2064975 A1 CA 2064975A1 CA 2064975 A CA2064975 A CA 2064975A CA 2064975 A CA2064975 A CA 2064975A CA 2064975 A1 CA2064975 A1 CA 2064975A1
Authority
CA
Canada
Prior art keywords
information
transceiver
multiplexed
wideband frequency
transceivers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2064975A
Other languages
French (fr)
Other versions
CA2064975C (en
Inventor
Michel T. Fattouche
Hatim Zagloul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quarterhill Inc
Original Assignee
Michel T. Fattouche
Hatim Zagloul
Wi-Lan Inc.
Wi-Lan Technologies Corp.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Michel T. Fattouche, Hatim Zagloul, Wi-Lan Inc., Wi-Lan Technologies Corp. filed Critical Michel T. Fattouche
Priority to CA002064975A priority Critical patent/CA2064975C/en
Priority to EP19930302325 priority patent/EP0562868A3/en
Publication of CA2064975A1 publication Critical patent/CA2064975A1/en
Application granted granted Critical
Publication of CA2064975C publication Critical patent/CA2064975C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

A method for allowing a number of wireless transceivers to exchange information (data, voice or video) with each other. A first frame of information is multiplexed over a number of wideband frequency bands at a first transceiver, and the information transmitted to a second transceiver. The information is received and processed at the second transceiver.
The information is differentially encoded using phase shift keying. In addition, after a pre-selected time interval, the first transceiver may transmit again.
During the preselected time interval, the second transceiver may exchange information with another transceiver in a time duplex fashion. The processing of the signal at the second transceiver may include estimating the phase differential of the transmitted signal and pre-distorting the transmitted signal. A
transceiver includes an encoder for encoding information, a wideband frequency division multiplexer for multiplexing the information onto wideband frequency voice channels, and a local oscillator for upconverting the multiplexed information. The apparatus may include a processor for applying a Fourier transform to the multiplexed information to bring the information into the time domain for transmission.
CA002064975A 1992-03-27 1992-03-27 Method and apparatus for multiple access between transceivers in wireless communications using ofdm spread spectrum Expired - Lifetime CA2064975C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002064975A CA2064975C (en) 1992-03-27 1992-03-27 Method and apparatus for multiple access between transceivers in wireless communications using ofdm spread spectrum
EP19930302325 EP0562868A3 (en) 1992-03-27 1993-03-25 Method and apparatus for multiple access between tansceivers in wireless communication using OFDM spread spectrum.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002064975A CA2064975C (en) 1992-03-27 1992-03-27 Method and apparatus for multiple access between transceivers in wireless communications using ofdm spread spectrum

Publications (2)

Publication Number Publication Date
CA2064975A1 true CA2064975A1 (en) 1993-09-28
CA2064975C CA2064975C (en) 1999-07-27

Family

ID=4149567

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002064975A Expired - Lifetime CA2064975C (en) 1992-03-27 1992-03-27 Method and apparatus for multiple access between transceivers in wireless communications using ofdm spread spectrum

Country Status (1)

Country Link
CA (1) CA2064975C (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6452915B1 (en) 1998-07-10 2002-09-17 Malibu Networks, Inc. IP-flow classification in a wireless point to multi-point (PTMP) transmission system
US7218691B1 (en) 2001-03-05 2007-05-15 Marvell International Ltd. Method and apparatus for estimation of orthogonal frequency division multiplexing symbol timing and carrier frequency offset
US7489731B2 (en) 2000-08-25 2009-02-10 Industrial Research Limited Communication system using OFDM
US7627067B2 (en) 2001-02-01 2009-12-01 Industrial Research Limited Maximum likelihood synchronization for a communications system using a pilot symbol
US7626920B2 (en) 1999-10-22 2009-12-01 Nextnet Wireless, Inc. Fixed OFDM wireless MAN utilizing CPE having internal antenna
US7733976B2 (en) 2001-03-23 2010-06-08 James Stuart Wight Computational circuits and methods for processing modulated signals having non-constant envelopes
US8619922B1 (en) 2002-02-04 2013-12-31 Marvell International Ltd. Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise
US9712289B2 (en) 1998-07-10 2017-07-18 Intellectual Ventures I Llc Transmission control protocol/internet protocol (TCP/IP) packet-centric wireless point to multi-point (PtMP) transmission system architecture

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6640248B1 (en) 1998-07-10 2003-10-28 Malibu Networks, Inc. Application-aware, quality of service (QoS) sensitive, media access control (MAC) layer
US6594246B1 (en) 1998-07-10 2003-07-15 Malibu Networks, Inc. IP-flow identification in a wireless point to multi-point transmission system
US6680922B1 (en) 1998-07-10 2004-01-20 Malibu Networks, Inc. Method for the recognition and operation of virtual private networks (VPNs) over a wireless point to multi-point (PtMP) transmission system
US6628629B1 (en) 1998-07-10 2003-09-30 Malibu Networks Reservation based prioritization method for wireless transmission of latency and jitter sensitive IP-flows in a wireless point to multi-point transmission system
US6590885B1 (en) 1998-07-10 2003-07-08 Malibu Networks, Inc. IP-flow characterization in a wireless point to multi-point (PTMP) transmission system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6452915B1 (en) 1998-07-10 2002-09-17 Malibu Networks, Inc. IP-flow classification in a wireless point to multi-point (PTMP) transmission system
US9712289B2 (en) 1998-07-10 2017-07-18 Intellectual Ventures I Llc Transmission control protocol/internet protocol (TCP/IP) packet-centric wireless point to multi-point (PtMP) transmission system architecture
US7626920B2 (en) 1999-10-22 2009-12-01 Nextnet Wireless, Inc. Fixed OFDM wireless MAN utilizing CPE having internal antenna
US7633893B2 (en) 1999-10-22 2009-12-15 Nextnet Wireless, Inc. Fixed OFDM wireless man utilizing CPE having internal antenna
US7489731B2 (en) 2000-08-25 2009-02-10 Industrial Research Limited Communication system using OFDM
US7627067B2 (en) 2001-02-01 2009-12-01 Industrial Research Limited Maximum likelihood synchronization for a communications system using a pilot symbol
US7218691B1 (en) 2001-03-05 2007-05-15 Marvell International Ltd. Method and apparatus for estimation of orthogonal frequency division multiplexing symbol timing and carrier frequency offset
US7532693B1 (en) 2001-03-05 2009-05-12 Marvell International Ltd. Method and apparatus for acquistion and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise
US8300743B1 (en) 2001-03-05 2012-10-30 Marvell International Ltd. Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise
US8929487B1 (en) 2001-03-05 2015-01-06 Marvell International Ltd. Channel estimator for updating channel estimates and carrier frequency offsets
US7733976B2 (en) 2001-03-23 2010-06-08 James Stuart Wight Computational circuits and methods for processing modulated signals having non-constant envelopes
US8619922B1 (en) 2002-02-04 2013-12-31 Marvell International Ltd. Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise

Also Published As

Publication number Publication date
CA2064975C (en) 1999-07-27

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Legal Events

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EEER Examination request
MKEX Expiry