TW200735554A - Methods and apparatus for noise estimation in a communication system - Google Patents
Methods and apparatus for noise estimation in a communication systemInfo
- Publication number
- TW200735554A TW200735554A TW096100191A TW96100191A TW200735554A TW 200735554 A TW200735554 A TW 200735554A TW 096100191 A TW096100191 A TW 096100191A TW 96100191 A TW96100191 A TW 96100191A TW 200735554 A TW200735554 A TW 200735554A
- Authority
- TW
- Taiwan
- Prior art keywords
- noise
- demodulated output
- communication system
- methods
- unmodulated subcarriers
- Prior art date
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
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
-
- 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
-
- 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)
- Power Engineering (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Noise Elimination (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US75607106P | 2006-01-03 | 2006-01-03 | |
US11/516,910 US7724849B2 (en) | 2006-01-03 | 2006-09-06 | Methods and apparatus for noise estimation in a communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200735554A true TW200735554A (en) | 2007-09-16 |
Family
ID=38224398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW096100191A TW200735554A (en) | 2006-01-03 | 2007-01-03 | Methods and apparatus for noise estimation in a communication system |
Country Status (9)
Country | Link |
---|---|
US (1) | US7724849B2 (zh) |
EP (1) | EP1969756A2 (zh) |
JP (1) | JP2009522944A (zh) |
KR (1) | KR100993748B1 (zh) |
BR (1) | BRPI0706300A2 (zh) |
CA (1) | CA2631575A1 (zh) |
RU (1) | RU2411679C2 (zh) |
TW (1) | TW200735554A (zh) |
WO (1) | WO2007114963A2 (zh) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8064835B2 (en) * | 2006-01-11 | 2011-11-22 | Quantenna Communications, Inc. | Antenna assignment system and method |
US8385435B2 (en) * | 2006-02-09 | 2013-02-26 | Broadcom Corporation | Measuring interference and noise power using non-content burst periods |
WO2007103183A2 (en) * | 2006-03-01 | 2007-09-13 | Interdigital Technology Corporation | Method and apparatus for channel estimation in an orthogonal frequency division multiplexing system |
US8091012B2 (en) * | 2006-05-04 | 2012-01-03 | Quantenna Communications Inc. | System and method for decreasing decoder complexity |
WO2007130578A2 (en) * | 2006-05-04 | 2007-11-15 | Quantenna Communications, Inc. | Multiple antenna receiver system and method |
US8063839B2 (en) | 2006-10-17 | 2011-11-22 | Quantenna Communications, Inc. | Tunable antenna system |
US20090003470A1 (en) * | 2007-06-29 | 2009-01-01 | Waltho Alan E | OFDM OOB emission suppression at specific frequencies |
WO2009054938A1 (en) * | 2007-10-19 | 2009-04-30 | Quantenna Communications, Inc. | Mitigating interference in a coded communication system |
WO2009067653A2 (en) * | 2007-11-21 | 2009-05-28 | Aware, Inc. | Stable low power mode for multicarrier transceivers |
JP5020158B2 (ja) * | 2008-04-25 | 2012-09-05 | 日本電信電話株式会社 | 無線受信装置、干渉除去方法、無線通信システムおよび無線通信方法 |
KR100987128B1 (ko) | 2008-05-15 | 2010-10-11 | 포텍마이크로시스템(주) | Ofdma 시스템에서 간섭에 따른 다운 링크 부반송파전력할당 방법 |
US8509325B2 (en) * | 2008-07-01 | 2013-08-13 | Qualcomm Incorporated | Adaptive thresholding for OFDM channel estimation |
TWI392254B (zh) * | 2009-06-02 | 2013-04-01 | Sunplus Technology Co Ltd | 一種用於多載波系統之訊號雜訊比的估算系統 |
US9264881B2 (en) * | 2011-01-04 | 2016-02-16 | Qualcomm Incorporated | Methods and apparatus for enhanced system access control for peer-to-peer wireless communication networks |
US9413575B2 (en) * | 2013-03-15 | 2016-08-09 | Echelon Corporation | Method and apparatus for multi-carrier modulation (MCM) packet detection based on phase differences |
US9363128B2 (en) | 2013-03-15 | 2016-06-07 | Echelon Corporation | Method and apparatus for phase-based multi-carrier modulation (MCM) packet detection |
US9762422B2 (en) | 2014-10-09 | 2017-09-12 | Qualcomm Incorporated | Tone-phase-shift keying: a new modulation scheme for SC-FDMA |
US9960867B1 (en) | 2017-04-18 | 2018-05-01 | Topcon Positioning Systems, Inc. | Method and apparatus for estimating the current signal-to-thermal noise ratio and signal-to-pulse noise ratio |
US10027430B1 (en) | 2017-04-18 | 2018-07-17 | Topcon Positioning Systems, Inc. | Method and apparatus for estimating the current signal-to-thermal noise ratio and signal-to-pulse noise ratio |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1028562B1 (en) | 1999-02-12 | 2008-07-02 | Texas Instruments Incorporated | Method of timing recovery in multicarrier systems |
US6456653B1 (en) | 1999-08-25 | 2002-09-24 | Lucent Technologies Inc. | Fast and accurate signal-to-noise ratio estimation technique for OFDM systems |
US7054375B2 (en) * | 2000-12-22 | 2006-05-30 | Nokia Corporation | Method and apparatus for error reduction in an orthogonal modulation system |
US7012978B2 (en) | 2002-03-26 | 2006-03-14 | Intel Corporation | Robust multiple chain receiver |
US7190741B1 (en) * | 2002-10-21 | 2007-03-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Real-time signal-to-noise ratio (SNR) estimation for BPSK and QPSK modulation using the active communications channel |
AU2004214806A1 (en) * | 2003-02-24 | 2004-09-10 | Qualcomm Incorporated | Pilot signals for use in multi-sector cells |
US20040218519A1 (en) | 2003-05-01 | 2004-11-04 | Rong-Liang Chiou | Apparatus and method for estimation of channel state information in OFDM receivers |
KR101015736B1 (ko) * | 2003-11-19 | 2011-02-22 | 삼성전자주식회사 | 직교 주파수 분할 다중 방식의 이동통신 시스템에서선택적 전력 제어 장치 및 방법 |
US7123580B2 (en) * | 2004-01-16 | 2006-10-17 | Nokia Corporation | Multiple user adaptive modulation scheme for MC-CDMA |
-
2006
- 2006-09-06 US US11/516,910 patent/US7724849B2/en not_active Expired - Fee Related
-
2007
- 2007-01-03 WO PCT/US2007/060062 patent/WO2007114963A2/en active Application Filing
- 2007-01-03 CA CA002631575A patent/CA2631575A1/en not_active Abandoned
- 2007-01-03 RU RU2008131937/09A patent/RU2411679C2/ru not_active IP Right Cessation
- 2007-01-03 BR BRPI0706300-8A patent/BRPI0706300A2/pt not_active IP Right Cessation
- 2007-01-03 EP EP07756278A patent/EP1969756A2/en not_active Withdrawn
- 2007-01-03 JP JP2008549629A patent/JP2009522944A/ja active Pending
- 2007-01-03 TW TW096100191A patent/TW200735554A/zh unknown
- 2007-01-03 KR KR1020087019027A patent/KR100993748B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US20070153924A1 (en) | 2007-07-05 |
US7724849B2 (en) | 2010-05-25 |
KR100993748B1 (ko) | 2010-11-11 |
CA2631575A1 (en) | 2007-10-11 |
RU2008131937A (ru) | 2010-02-10 |
WO2007114963A2 (en) | 2007-10-11 |
JP2009522944A (ja) | 2009-06-11 |
WO2007114963A3 (en) | 2008-01-03 |
RU2411679C2 (ru) | 2011-02-10 |
BRPI0706300A2 (pt) | 2011-03-22 |
EP1969756A2 (en) | 2008-09-17 |
KR20080091466A (ko) | 2008-10-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW200735554A (en) | Methods and apparatus for noise estimation in a communication system | |
TW200736651A (en) | Methods and apparatus for position location in a wireless network | |
TW200715774A (en) | Packet detection | |
ATE341005T1 (de) | Verfahren und vorrichtung zur durchführung einer signalkorrelation in mehreren auflösungen, zur mehrwegestörungsverminderung | |
EP1523143A8 (en) | Receiving apparatus in OFDM transmission system | |
WO2008083984A8 (en) | A navigation device and method for improving a time to identify a location of the navigation device | |
TW200640212A (en) | Frequency correlation based synchronization for coherent OFDM receiver and apparatus thereof | |
EP2257017A3 (en) | Incremental Pilot Insertion For Channel And Interference Estimation | |
EP2453624A4 (en) | METHOD FOR DETERMINING SIGNAL RESOURCES | |
TW200926703A (en) | Methods and apparatus for identifying a preamble sequence and for estimating an integer carrier frequency offset | |
EP2045940A4 (en) | DISRUPTIVE RATING ASSESSMENT METHOD IN A MULTI-CARRIER COMMUNICATION SYSTEM, RECEPTION PROCESSING METHOD, IMMUNITY RATING TEST EQUIPMENT AND RECEIVER | |
EP2137726A4 (en) | METHOD AND DEVICE FOR PROCESSING AN AUDIO SIGNAL | |
TW200951469A (en) | Multipath detection for received SPS signal | |
RU2009111226A (ru) | Способ и устройство для передачи сетевых идентификаторов в системе связи | |
WO2007114847A3 (en) | Single-image vignetting correction | |
EP2639995A3 (en) | Method and apparatus for estimating offset value, receiving apparatus, and method of processing signal in receiving apparatus | |
TW200629754A (en) | Method and apparatus for guard interval detection in multi-carrier receiver | |
WO2010129439A3 (en) | Method and system for multiuser detection | |
EP2226950A3 (en) | Communication device, communication method, and program | |
DE60022680D1 (de) | Verfahren und einrichtung zur schätzung eines frequenzversatzes durch kombinierung von pilot - und datensymbolen | |
WO2010150198A3 (en) | Method and apparatus for enhanced channel estimation in wireless communication systems | |
TW200620923A (en) | Method and system for guard interval size detection | |
WO2007149821A3 (en) | Methods and apparatus for efficient data distribution to a group of users | |
ATE487290T1 (de) | Verfahren zum übertragen und empfangen von daten und vorrichtung dafür | |
DE69926869D1 (de) | Verfahren und einrichtung zur detektion eines frequenzsynchronisierungssignales |