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WO2007021159A3 - Cinr estimating method and device using preamble in ofdm - Google Patents

Cinr estimating method and device using preamble in ofdm Download PDF

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Publication number
WO2007021159A3
WO2007021159A3 PCT/KR2006/003258 KR2006003258W WO2007021159A3 WO 2007021159 A3 WO2007021159 A3 WO 2007021159A3 KR 2006003258 W KR2006003258 W KR 2006003258W WO 2007021159 A3 WO2007021159 A3 WO 2007021159A3
Authority
WO
WIPO (PCT)
Prior art keywords
preamble
power
cinr
calculating
interference
Prior art date
Application number
PCT/KR2006/003258
Other languages
French (fr)
Other versions
WO2007021159A2 (en
Inventor
Yu-Ro Lee
Dong-Seung Kwon
Original Assignee
Samsung Electronics Co Ltd
Korea Electronics Telecomm
Sk Telecom Co Ltd
Kt Corp
Hanaro Telecom Inc
Yu-Ro Lee
Dong-Seung Kwon
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 KR1020050106540A external-priority patent/KR100668662B1/en
Application filed by Samsung Electronics Co Ltd, Korea Electronics Telecomm, Sk Telecom Co Ltd, Kt Corp, Hanaro Telecom Inc, Yu-Ro Lee, Dong-Seung Kwon filed Critical Samsung Electronics Co Ltd
Priority to US12/064,115 priority Critical patent/US8019021B2/en
Publication of WO2007021159A2 publication Critical patent/WO2007021159A2/en
Publication of WO2007021159A3 publication Critical patent/WO2007021159A3/en

Links

Classifications

    • 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
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A device and method for estimating a carrier to interference-plus-noise ratio (CINR) in an OFDM system are provided. The CINR estimating method includes (a) receiving a preamble symbol and transmit subcarrier transmitted from a base station; (b) calculating an interference power and noise power using the preamble symbol and transmit subcarrier; (c) calculating a receive power used for the base station to transmit a preamble and data symbol; (d) estimating a preamble CINR value using an interference power, a noise power, and a receive power; (e) calculating the noise power from a subcarrier not transmitting a preamble; and (f) calculating an average CINR of data subcarriers using the preamble CINR value and the noise power. With such a method, a precise carrier to interference-plus-noise ratio (CINR) can be estimated using a preamble when the preamble power is amplified in comparison with the data symbol power, the subcarriers are differently applied for the respective cells, and the traffic of the data area is partially loading.
PCT/KR2006/003258 2005-08-19 2006-08-18 Cinr estimating method and device using preamble in ofdm WO2007021159A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/064,115 US8019021B2 (en) 2005-08-19 2006-08-18 Carrier to interference and noise ratio (CINR) estimating method and device using preamble in orthogonal frequency division multiplexing (OFDM)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2005-0076383 2005-08-19
KR20050076383 2005-08-19
KR1020050106540A KR100668662B1 (en) 2005-08-19 2005-11-08 Method and apparatus for estimating signal-to-interference and noise ratio using preamble in OPDM
KR10-2005-0106540 2005-11-08

Publications (2)

Publication Number Publication Date
WO2007021159A2 WO2007021159A2 (en) 2007-02-22
WO2007021159A3 true WO2007021159A3 (en) 2007-04-19

Family

ID=37757976

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2006/003258 WO2007021159A2 (en) 2005-08-19 2006-08-18 Cinr estimating method and device using preamble in ofdm

Country Status (1)

Country Link
WO (1) WO2007021159A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
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US8064835B2 (en) 2006-01-11 2011-11-22 Quantenna Communications, Inc. Antenna assignment system and method
US8091012B2 (en) 2006-05-04 2012-01-03 Quantenna Communications Inc. System and method for decreasing decoder complexity
TWI411255B (en) 2006-05-04 2013-10-01 Quantenna Communications Inc Multiple antenna receiver system and method
US8063839B2 (en) 2006-10-17 2011-11-22 Quantenna Communications, Inc. Tunable antenna system
KR100836152B1 (en) * 2007-02-06 2008-06-09 삼성전자주식회사 Mobile communication terminal and its channel state measurement method
US8379762B2 (en) * 2007-07-19 2013-02-19 Cisco Technology, Inc. Physical carrier to interference-plus-noise ratio techniques for wideband wireless communication networks
US7792226B2 (en) 2007-08-16 2010-09-07 Motorola, Inc. Method and apparatus for carrier power and interference-noise estimation in space division multiple access and multiple-input/multiple-output wireless communication systems
WO2009054938A1 (en) * 2007-10-19 2009-04-30 Quantenna Communications, Inc. Mitigating interference in a coded communication system
CN101227445B (en) * 2008-01-23 2011-09-21 中兴通讯股份有限公司 Method for computing carrier jamming noise ratio under OFDM
US8625685B2 (en) 2008-02-21 2014-01-07 Qualcomm Incorporated Signal quality estimation for OFDMA systems
WO2009116905A1 (en) * 2008-03-18 2009-09-24 Telefonaktiebolaget L M Ericsson (Publ) Methods and arrangements for memory-efficient estimation of noise floor
US8681720B2 (en) 2008-03-25 2014-03-25 Telefonaktiebolaget L M Ericsson (Publ) Methods and devices for multiple modulated data streams signaling
US7848221B2 (en) * 2008-07-14 2010-12-07 Motorola Mobility, Inc. Method and system for detecting adjacent channel interference from OFDM/OFDMA based broadband wireless access
DK2157717T3 (en) * 2008-08-19 2013-05-06 Ericsson Telefon Ab L M Method and system and device for cancellation of disturbances by CQI estimation
CN101610572B (en) * 2009-07-17 2011-04-20 中兴通讯股份有限公司 Method and device for determining Carrier to Interference plus Noise Ratio of down-link data
WO2012118414A1 (en) * 2011-03-01 2012-09-07 Telefonaktiebolaget L M Ericsson (Publ) Load estimation in a user equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030223354A1 (en) * 2002-05-30 2003-12-04 Denso Corporation SINR measurement method for OFDM communications systems
EP1555761A1 (en) * 2004-01-14 2005-07-20 Samsung Electronics Co., Ltd. Apparatus and method for estimating interference and noise in a communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030223354A1 (en) * 2002-05-30 2003-12-04 Denso Corporation SINR measurement method for OFDM communications systems
EP1555761A1 (en) * 2004-01-14 2005-07-20 Samsung Electronics Co., Ltd. Apparatus and method for estimating interference and noise in a communication system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JUNGHOON L. ET AL.: "Performance Improvement of channel estimation based on Pilot Structure Variations for Cellular OFDMA Systems", 60TH IEEE VEHICULAR TECHNOLOGY CONFERENCE (VTC2004), LOS ANGELES, CA, USA, 28 September 2004 (2004-09-28), pages 989 - 993, XP010786770 *

Also Published As

Publication number Publication date
WO2007021159A2 (en) 2007-02-22

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