NO20092201L - Påvisning av tilstedeværelsen av et overføringssignal i en trådløs kanal - Google Patents

Påvisning av tilstedeværelsen av et overføringssignal i en trådløs kanal

Info

Publication number
NO20092201L
NO20092201L NO20092201A NO20092201A NO20092201L NO 20092201 L NO20092201 L NO 20092201L NO 20092201 A NO20092201 A NO 20092201A NO 20092201 A NO20092201 A NO 20092201A NO 20092201 L NO20092201 L NO 20092201L
Authority
NO
Norway
Prior art keywords
frequency
detection
signal
transmission signal
wireless channel
Prior art date
Application number
NO20092201A
Other languages
English (en)
Inventor
Stephen J Shellhammer
Original Assignee
Qualcomm Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39295561&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO20092201(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of NO20092201L publication Critical patent/NO20092201L/no

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
    • H04B1/38—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
    • H04B1/44—Transmit/receive switching
    • H04B1/46—Transmit/receive switching by voice-frequency signals; by pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

En fremgangsmåte for å påvise nærværet av et overført signal i en trådløs spektrumskanal er beskrevet. Frekvensen av et signal er konvertert fra en første frekvens til en andre frekvens. Signalet med den andre frekvens filtreres for å fjerne signaler som ikke er innenfor båndet av den andre frekvens. Et gjennomsnittlig periodogram av signalet blir beregnet. En verdi av det gjennomsnittlige periodogram blir sammenlignet med en terskel. Nærværet av det overførte signal blir påvist hvis verdien av det gjennomsnittlige periodogram overskrider terskelen.
NO20092201A 2006-11-10 2009-06-08 Påvisning av tilstedeværelsen av et overføringssignal i en trådløs kanal NO20092201L (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US86534806P 2006-11-10 2006-11-10
US11/935,911 US8031807B2 (en) 2006-11-10 2007-11-06 Systems and methods for detecting the presence of a transmission signal in a wireless channel
PCT/US2007/084369 WO2008061044A2 (en) 2006-11-10 2007-11-10 Systems and methods for detecting the presence of a transmission signal in a wireless channel

Publications (1)

Publication Number Publication Date
NO20092201L true NO20092201L (no) 2009-06-08

Family

ID=39295561

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20092201A NO20092201L (no) 2006-11-10 2009-06-08 Påvisning av tilstedeværelsen av et overføringssignal i en trådløs kanal

Country Status (16)

Country Link
US (1) US8031807B2 (no)
EP (1) EP2080274B1 (no)
JP (2) JP2010509874A (no)
KR (1) KR101108461B1 (no)
CN (1) CN101536328B (no)
AU (1) AU2007319384B2 (no)
BR (1) BRPI0718588B1 (no)
CA (1) CA2667739C (no)
HK (1) HK1131705A1 (no)
IL (1) IL198240A (no)
MX (1) MX2009004929A (no)
MY (1) MY145738A (no)
NO (1) NO20092201L (no)
RU (1) RU2414050C2 (no)
TW (1) TWI360968B (no)
WO (1) WO2008061044A2 (no)

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JP5591953B2 (ja) * 2010-01-05 2014-09-17 クゥアルコム・インコーポレイテッド ホワイトスペースデバイス中の送信機の静穏化のための方法および装置
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US8792589B2 (en) * 2010-05-13 2014-07-29 Wi-Lan Inc. System and method for protecting transmissions of wireless microphones operating in television band white space
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US20120083218A1 (en) * 2010-09-30 2012-04-05 Hrishikesh Gossain System and method for collaborative spectrum analysis
US8731474B2 (en) 2011-05-25 2014-05-20 Shared Spectrum Company Method and system for man-made noise rejection detector
CN102571237B (zh) * 2011-12-31 2014-08-13 中国科学技术大学 一种基于周期图的无线信号检测方法
RU2537972C1 (ru) * 2013-06-25 2015-01-10 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Способ передачи данных в полосе частот аналогового тв
US9488730B2 (en) * 2013-07-16 2016-11-08 Qualcomm Incorporated Receiver alias rejection improvement by adding an offset
CN103560838B (zh) * 2013-10-22 2015-04-29 宁波大学 一种抑制直流偏置的能量检测方法
US10536386B2 (en) 2014-05-16 2020-01-14 Huawei Technologies Co., Ltd. System and method for dynamic resource allocation over licensed and unlicensed spectrums
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CN105406929B (zh) * 2015-12-21 2017-11-03 哈尔滨工业大学 基于频域的频谱感知方法
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Also Published As

Publication number Publication date
RU2009122206A (ru) 2010-12-20
TW200830749A (en) 2008-07-16
AU2007319384B2 (en) 2011-07-07
HK1131705A1 (en) 2010-01-29
CA2667739A1 (en) 2008-05-22
AU2007319384A1 (en) 2008-05-22
IL198240A0 (en) 2009-12-24
BRPI0718588A2 (pt) 2014-04-08
RU2414050C2 (ru) 2011-03-10
WO2008061044A2 (en) 2008-05-22
KR101108461B1 (ko) 2012-02-06
CN101536328B (zh) 2013-07-03
IL198240A (en) 2014-04-30
MX2009004929A (es) 2009-05-21
JP5399531B2 (ja) 2014-01-29
EP2080274B1 (en) 2015-08-26
US20080112467A1 (en) 2008-05-15
KR20090086094A (ko) 2009-08-10
CN101536328A (zh) 2009-09-16
EP2080274A2 (en) 2009-07-22
MY145738A (en) 2012-03-30
BRPI0718588B1 (pt) 2020-01-28
TWI360968B (en) 2012-03-21
US8031807B2 (en) 2011-10-04
WO2008061044A3 (en) 2008-07-10
JP2012199946A (ja) 2012-10-18
JP2010509874A (ja) 2010-03-25
CA2667739C (en) 2013-10-01

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