WO2007133888A3 - Ofdm communication system, communication unit and method of communicating ofdm signals - Google Patents

Ofdm communication system, communication unit and method of communicating ofdm signals Download PDF

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Publication number
WO2007133888A3
WO2007133888A3 PCT/US2007/066975 US2007066975W WO2007133888A3 WO 2007133888 A3 WO2007133888 A3 WO 2007133888A3 US 2007066975 W US2007066975 W US 2007066975W WO 2007133888 A3 WO2007133888 A3 WO 2007133888A3
Authority
WO
WIPO (PCT)
Prior art keywords
ofdm
communication
mode
communicating
communication system
Prior art date
Application number
PCT/US2007/066975
Other languages
French (fr)
Other versions
WO2007133888A2 (en
Inventor
Markus D Muck
Patrick Labbe
Original Assignee
Motorola Inc
Markus D Muck
Patrick Labbe
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 Motorola Inc, Markus D Muck, Patrick Labbe filed Critical Motorola Inc
Publication of WO2007133888A2 publication Critical patent/WO2007133888A2/en
Publication of WO2007133888A3 publication Critical patent/WO2007133888A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0067—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2603—Signal structure ensuring backward compatibility with legacy system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload

Abstract

An orthogonal frequency division multiplex (OFDM) wireless communication system supports two OFDM communication modes of operation. A first OFDM communication mode of operation utilises a first respective communication bandwidth and a second OFDM communication mode of operation utilises a second communication bandwidth that incorporates the first communication bandwidth and at least one side carrier of the first communication bandwidth, where the at least one side carrier is arranged to carry no power in the first mode of operation. Signalling information is communicated in the at least one side-carrier in the second mode of operation, thereby indicating that the second mode of communication is to be used.
PCT/US2007/066975 2006-05-11 2007-04-19 Ofdm communication system, communication unit and method of communicating ofdm signals WO2007133888A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0609269A GB2438010B (en) 2006-05-11 2006-05-11 OFDM communication system,communication unit and method of communicating OFDM signals
GB0609269.6 2006-05-11

Publications (2)

Publication Number Publication Date
WO2007133888A2 WO2007133888A2 (en) 2007-11-22
WO2007133888A3 true WO2007133888A3 (en) 2008-10-16

Family

ID=36637242

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/066975 WO2007133888A2 (en) 2006-05-11 2007-04-19 Ofdm communication system, communication unit and method of communicating ofdm signals

Country Status (2)

Country Link
GB (1) GB2438010B (en)
WO (1) WO2007133888A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102160300B (en) * 2008-09-19 2014-06-18 诺基亚西门子通信公司 Network element and method of operating a network element

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581555A (en) * 1993-09-17 1996-12-03 Scientific-Atlanta, Inc. Reverse path allocation and contention resolution scheme for a broadband communications system
US5625651A (en) * 1994-06-02 1997-04-29 Amati Communications, Inc. Discrete multi-tone data transmission system using an overhead bus for synchronizing multiple remote units
US5644573A (en) * 1995-01-20 1997-07-01 Amati Communications Corporation Methods for coordinating upstream discrete multi-tone data transmissions

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7573807B1 (en) * 1999-09-17 2009-08-11 Alcatel-Lucent Usa Inc. Method and apparatus for performing differential modulation over frequency in an orthogonal frequency division multiplexing (OFDM) communication system
KR101018485B1 (en) * 2003-06-30 2011-03-03 에이저 시스템즈 인크 Methods and apparatus for backwards compatible communication in a multiple antenna communication system using fdm-based preamble structures
KR101065687B1 (en) * 2004-06-10 2011-09-19 엘지전자 주식회사 Method of obtaining time synchronization in OFDM mobile communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581555A (en) * 1993-09-17 1996-12-03 Scientific-Atlanta, Inc. Reverse path allocation and contention resolution scheme for a broadband communications system
US5625651A (en) * 1994-06-02 1997-04-29 Amati Communications, Inc. Discrete multi-tone data transmission system using an overhead bus for synchronizing multiple remote units
US5644573A (en) * 1995-01-20 1997-07-01 Amati Communications Corporation Methods for coordinating upstream discrete multi-tone data transmissions

Also Published As

Publication number Publication date
GB0609269D0 (en) 2006-06-21
WO2007133888A2 (en) 2007-11-22
GB2438010B (en) 2008-08-27
GB2438010A (en) 2007-11-14

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