GB201122238D0 - DC offset - Google Patents

DC offset

Info

Publication number
GB201122238D0
GB201122238D0 GBGB1122238.7A GB201122238A GB201122238D0 GB 201122238 D0 GB201122238 D0 GB 201122238D0 GB 201122238 A GB201122238 A GB 201122238A GB 201122238 D0 GB201122238 D0 GB 201122238D0
Authority
GB
United Kingdom
Prior art keywords
signal
offset
frequency
component
receiver
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.)
Withdrawn
Application number
GBGB1122238.7A
Other versions
GB2491918A (en
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.)
Huawei Technologies Research and Development UK Ltd
Original Assignee
Neul 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
Priority claimed from GB1109874.6A external-priority patent/GB2491840B/en
Priority claimed from GB1109854.8A external-priority patent/GB2491837A/en
Priority claimed from GBGB1109830.8A external-priority patent/GB201109830D0/en
Priority claimed from GB1109844.9A external-priority patent/GB2491834B/en
Priority claimed from GBGB1109836.5A external-priority patent/GB201109836D0/en
Priority claimed from GBGB1109863.9A external-priority patent/GB201109863D0/en
Priority claimed from GB1109853.0A external-priority patent/GB2491836B/en
Priority claimed from GB1109840.7A external-priority patent/GB2492051B/en
Priority claimed from GB201109867A external-priority patent/GB201109867D0/en
Priority claimed from GB1109848.0A external-priority patent/GB2491835A/en
Priority claimed from GBGB1109837.3A external-priority patent/GB201109837D0/en
Priority claimed from GB1109850.6A external-priority patent/GB2492052B/en
Priority claimed from GB1109829.0A external-priority patent/GB2491832A/en
Priority claimed from GBGB1116910.9A external-priority patent/GB201116910D0/en
Application filed by Neul Ltd filed Critical Neul Ltd
Publication of GB201122238D0 publication Critical patent/GB201122238D0/en
Priority to US14/126,068 priority Critical patent/US9215617B2/en
Priority to GB1322109.8A priority patent/GB2509611B/en
Priority to PCT/EP2012/061172 priority patent/WO2012171944A1/en
Publication of GB2491918A publication Critical patent/GB2491918A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method for estimating an unwanted component (noise) that a receiver introduces into a received signal (201, Figure 2) at a known frequency, the method comprising applying a frequency offset to a signal 102, which comprises a wanted component at the known frequency, to form an offset signal having a frequency spectrum (302, Figure 3) in which the wanted component is not positioned at the known frequency, processing the offset signal in the receiver 103 and estimating a component positioned at the known frequency in the frequency spectrum of the processed signal 104. The estimated component will correspond to the unwanted component, for example at DC, introduced by processing the signal at the receiver. This estimated unwanted component can therefore be estimated and removed, i.e. subtracted, from the processed received signal 105. The method in one embodiment therefore provides a DC offset estimation and compensation arrangement. The frequency offset may be applied at the receiver or at the transmitter. The signal may comprise a synchronization portion (202, Figure 2) consisting of a series (206, Figure 2) of identical repeated blocks (207, Figure 2) and in one embodiment only the synchronization portion is frequency offset. The synchronization portion may have a frequency spectrum (301, Figure 3) comprising a plurality of equally spaced peaks and the frequency offset may be set to be equal to an odd-multiple half of the spacing between two of the peaks. The frequency offset may be reversed once the estimated unwanted component has been removed from the signal. The unwanted component introduced by the receiver may be due to a number of factors such as noise or offset introduced from amplification, mixing or filtering etc. stages.
GB1122238.7A 2011-06-13 2011-12-23 Receiver noise compensation Withdrawn GB2491918A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1322109.8A GB2509611B (en) 2011-06-13 2012-06-13 DC offset compensation
PCT/EP2012/061172 WO2012171944A1 (en) 2011-06-13 2012-06-13 Dc offset compensation
US14/126,068 US9215617B2 (en) 2011-06-13 2012-06-13 DC offset compensation

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
GB1109853.0A GB2491836B (en) 2011-06-13 2011-06-13 Frequency planning
GB1109840.7A GB2492051B (en) 2011-06-13 2011-06-13 Channel bandwidth
GB201109867A GB201109867D0 (en) 2011-06-13 2011-06-13 Signal acquisition from cold start
GB1109848.0A GB2491835A (en) 2011-06-13 2011-06-13 Communication using time frames of at least one second duration
GBGB1109830.8A GB201109830D0 (en) 2011-06-13 2011-06-13 Allocation of whitespace spectrum
GBGB1109836.5A GB201109836D0 (en) 2011-06-13 2011-06-13 Broadcast mechanism
GB1109844.9A GB2491834B (en) 2011-06-13 2011-06-13 Acknowledgment mechanism
GB1109829.0A GB2491832A (en) 2011-06-13 2011-06-13 Antenna nulling
GB1109850.6A GB2492052B (en) 2011-06-13 2011-06-13 Interference mitigation
GB1109874.6A GB2491840B (en) 2011-06-13 2011-06-13 Inter-device communication
GB1109854.8A GB2491837A (en) 2011-06-13 2011-06-13 Whitespace channel allocations in dependence on geographical location and an estimated coverage area of a communications station
GBGB1109837.3A GB201109837D0 (en) 2011-06-13 2011-06-13 Transmission mode
GBGB1109863.9A GB201109863D0 (en) 2011-06-13 2011-06-13 Slot flexibility
GBGB1116910.9A GB201116910D0 (en) 2011-06-13 2011-09-30 Communication network

Publications (2)

Publication Number Publication Date
GB201122238D0 true GB201122238D0 (en) 2012-02-01
GB2491918A GB2491918A (en) 2012-12-19

Family

ID=44882285

Family Applications (3)

Application Number Title Priority Date Filing Date
GB1115382.2A Active GB2491908B (en) 2011-06-13 2011-09-06 Calibration mode
GB1122238.7A Withdrawn GB2491918A (en) 2011-06-13 2011-12-23 Receiver noise compensation
GB1122247.8A Active GB2492187B (en) 2011-06-13 2011-12-23 Signal acquisition

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1115382.2A Active GB2491908B (en) 2011-06-13 2011-09-06 Calibration mode

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1122247.8A Active GB2492187B (en) 2011-06-13 2011-12-23 Signal acquisition

Country Status (1)

Country Link
GB (3) GB2491908B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3962190A1 (en) * 2020-08-26 2022-03-02 THALES DIS AIS Deutschland GmbH Method for controlling data transmission in a radio communication system

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6725024B1 (en) * 2000-11-07 2004-04-20 Telefonaktiebolaget Lm Ericsson (Publ) Offset local oscillator frequency
US7680456B2 (en) * 2005-02-16 2010-03-16 Texas Instruments Incorporated Methods and apparatus to perform signal removal in a low intermediate frequency receiver
CN101874357B (en) * 2007-11-23 2013-08-07 法国电信公司 Creation of a pilot channel in an opportunistic radio communication system
US7961554B2 (en) * 2008-01-11 2011-06-14 Cellnet Innovations, Inc. Methods and systems for accurate time-keeping on metering and other network communication devices
US8254855B2 (en) * 2008-05-07 2012-08-28 Qualcomm, Incorporated Frequency spur detection and suppression
US20090312010A1 (en) * 2008-06-16 2009-12-17 Steven Hall Method and system for bluetooth and wimax coexistence
US8055234B2 (en) * 2008-06-27 2011-11-08 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for suppressing strong-signal interference in low-IF receivers
JP5153507B2 (en) * 2008-08-04 2013-02-27 三菱電機株式会社 Wireless communication device
GB2453622B (en) * 2008-08-21 2009-09-16 Cambridge Silicon Radio Ltd Tuneable filter
US8594120B2 (en) * 2010-03-12 2013-11-26 Disney Enterprises, Inc. Cellular wireless LAN with frequency division multiplex in TV white space
GB201007012D0 (en) * 2010-04-27 2010-06-09 Vodafone Ip Licensing Ltd Improving data rate in mobile communication network
US8908659B2 (en) * 2010-05-11 2014-12-09 Thomson Licensing Method and apparatus for coexistence of different bandwidth systems in TV white space
EP2398151A1 (en) * 2010-06-21 2011-12-21 Nxp B.V. Radio receiver apparatus and method for operating the apparatus

Also Published As

Publication number Publication date
GB2491908A (en) 2012-12-19
GB201115382D0 (en) 2011-10-19
GB2492187B (en) 2015-06-24
GB201122247D0 (en) 2012-02-01
GB2492187A (en) 2012-12-26
GB2491908B (en) 2013-07-24
GB2491918A (en) 2012-12-19

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20170831 AND 20170906