GB2434065B - Variable bandwidth transmitter and receiver - Google Patents

Variable bandwidth transmitter and receiver

Info

Publication number
GB2434065B
GB2434065B GB0600346A GB0600346A GB2434065B GB 2434065 B GB2434065 B GB 2434065B GB 0600346 A GB0600346 A GB 0600346A GB 0600346 A GB0600346 A GB 0600346A GB 2434065 B GB2434065 B GB 2434065B
Authority
GB
United Kingdom
Prior art keywords
receiver
variable bandwidth
bandwidth transmitter
transmitter
variable
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.)
Expired - Fee Related
Application number
GB0600346A
Other versions
GB2434065A (en
GB0600346D0 (en
Inventor
Steve Carl Jamieson Parker
Justin Coon
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.)
Toshiba Europe Ltd
Original Assignee
Toshiba Research Europe Ltd
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 Toshiba Research Europe Ltd filed Critical Toshiba Research Europe Ltd
Priority to GB0600346A priority Critical patent/GB2434065B/en
Publication of GB0600346D0 publication Critical patent/GB0600346D0/en
Publication of GB2434065A publication Critical patent/GB2434065A/en
Application granted granted Critical
Publication of GB2434065B publication Critical patent/GB2434065B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
    • 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
    • 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
    • H04L27/2608—
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • H04L27/26524—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • 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
    • H04L27/26035—Maintenance of orthogonality, e.g. for signals exchanged between cells or users, or by using covering codes or sequences
GB0600346A 2006-01-09 2006-01-09 Variable bandwidth transmitter and receiver Expired - Fee Related GB2434065B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0600346A GB2434065B (en) 2006-01-09 2006-01-09 Variable bandwidth transmitter and receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0600346A GB2434065B (en) 2006-01-09 2006-01-09 Variable bandwidth transmitter and receiver

Publications (3)

Publication Number Publication Date
GB0600346D0 GB0600346D0 (en) 2006-02-15
GB2434065A GB2434065A (en) 2007-07-11
GB2434065B true GB2434065B (en) 2008-05-07

Family

ID=35911584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0600346A Expired - Fee Related GB2434065B (en) 2006-01-09 2006-01-09 Variable bandwidth transmitter and receiver

Country Status (1)

Country Link
GB (1) GB2434065B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011509595A (en) * 2008-01-04 2011-03-24 クゥアルコム・インコーポレイテッド Method and apparatus for maximum ratio combining for replicated signals in an OFDMA system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8218969B2 (en) * 2009-03-18 2012-07-10 Cisco Technology, Inc. OFDM transponder interface with variable bit transfer rate in optical communications systems
US20150358117A1 (en) * 2014-06-09 2015-12-10 Intel IP Corporation Interleaver for multiuser transmission

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809296A (en) * 1986-02-27 1989-02-28 Bbc Brown, Boveri Ltd. Method for transmitting data via the lines of a power supply system
EP0854619A1 (en) * 1997-01-15 1998-07-22 Alcatel Method to allocate data bits, multicarrier transmitter and receiver using the method, and related allocation message generator
EP1277317A2 (en) * 2000-04-22 2003-01-22 Atheros Communications, Inc. Multi-carrier communication systems employing variable ofdm-symbol rates and number of carriers
EP1299978A2 (en) * 2000-07-12 2003-04-09 QUALCOMM Incorporated Multiplexing of real time services and non-real time services for ofdm systems
EP1480362A1 (en) * 2002-02-28 2004-11-24 Matsushita Electric Industrial Co., Ltd. Radio communicating method, radio transmitting apparatus, and radio receiving apparatus
WO2005101718A1 (en) * 2004-03-30 2005-10-27 Intel Corporation Method and system for switching bandwith in a communication system
WO2005112319A2 (en) * 2004-05-07 2005-11-24 Texas Instruments Incorporated Mapping data tones onto guard tones for a multi-band ofdm system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809296A (en) * 1986-02-27 1989-02-28 Bbc Brown, Boveri Ltd. Method for transmitting data via the lines of a power supply system
EP0854619A1 (en) * 1997-01-15 1998-07-22 Alcatel Method to allocate data bits, multicarrier transmitter and receiver using the method, and related allocation message generator
EP1277317A2 (en) * 2000-04-22 2003-01-22 Atheros Communications, Inc. Multi-carrier communication systems employing variable ofdm-symbol rates and number of carriers
EP1299978A2 (en) * 2000-07-12 2003-04-09 QUALCOMM Incorporated Multiplexing of real time services and non-real time services for ofdm systems
EP1480362A1 (en) * 2002-02-28 2004-11-24 Matsushita Electric Industrial Co., Ltd. Radio communicating method, radio transmitting apparatus, and radio receiving apparatus
WO2005101718A1 (en) * 2004-03-30 2005-10-27 Intel Corporation Method and system for switching bandwith in a communication system
WO2005112319A2 (en) * 2004-05-07 2005-11-24 Texas Instruments Incorporated Mapping data tones onto guard tones for a multi-band ofdm system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011509595A (en) * 2008-01-04 2011-03-24 クゥアルコム・インコーポレイテッド Method and apparatus for maximum ratio combining for replicated signals in an OFDMA system

Also Published As

Publication number Publication date
GB2434065A (en) 2007-07-11
GB0600346D0 (en) 2006-02-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20130109