IN2015DN04051A - - Google Patents
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- Publication number
- IN2015DN04051A IN2015DN04051A IN4051DEN2015A IN2015DN04051A IN 2015DN04051 A IN2015DN04051 A IN 2015DN04051A IN 4051DEN2015 A IN4051DEN2015 A IN 4051DEN2015A IN 2015DN04051 A IN2015DN04051 A IN 2015DN04051A
- Authority
- IN
- India
- Prior art keywords
- base station
- doppler frequency
- signal transmitted
- radio frequency
- demodulated
- Prior art date
Links
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/10—Systems for determining distance or velocity not using reflection or reradiation using radio waves using Doppler effect
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/52—Determining velocity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0035—Synchronisation arrangements detecting errors in frequency or phase
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0036—Correction of carrier offset using a recovered symbol clock
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0046—Open loops
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0083—Signalling arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
- Power Engineering (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
Provided are a signal demodulation method and device so as to reduce the influence of Doppler frequency shift on the communication rate. When a received radio frequency signal transmitted by a base station is demodulated after a reference clock signal provided by a PMU is acquired it is also required to determine a moving speed of a mobile terminal and determine a Doppler frequency offset value generated when the mobile terminal receives the radio frequency signal transmitted by the base station according to the moving speed and then the received radio frequency signal transmitted by the base station is demodulated according to the reference clock signal and the Doppler frequency offset value. Since the influence of Doppler frequency offset is taken into account when a radio frequency signal transmitted by a base station is demodulated the demodulation accuracy is very high thereby avoiding the problem of too slow a communication rate when Doppler frequency shift exists.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310195569.3A CN103269259B (en) | 2013-05-23 | 2013-05-23 | A kind of signal demodulating method and device |
PCT/CN2014/076514 WO2014187231A1 (en) | 2013-05-23 | 2014-04-29 | Signal demodulation method and device |
Publications (1)
Publication Number | Publication Date |
---|---|
IN2015DN04051A true IN2015DN04051A (en) | 2015-10-09 |
Family
ID=49012870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN4051DEN2015 IN2015DN04051A (en) | 2013-05-23 | 2014-04-29 |
Country Status (10)
Country | Link |
---|---|
US (1) | US9712974B2 (en) |
EP (1) | EP3001621B1 (en) |
JP (1) | JP6096919B2 (en) |
KR (1) | KR101715799B1 (en) |
CN (1) | CN103269259B (en) |
BR (1) | BR112015014184A2 (en) |
IN (1) | IN2015DN04051A (en) |
MX (1) | MX346064B (en) |
RU (1) | RU2607638C1 (en) |
WO (1) | WO2014187231A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103269259B (en) * | 2013-05-23 | 2016-09-21 | 小米科技有限责任公司 | A kind of signal demodulating method and device |
WO2016145620A1 (en) | 2015-03-17 | 2016-09-22 | 华为技术有限公司 | Data demodulation method, apparatus and system |
JP2016184889A (en) * | 2015-03-26 | 2016-10-20 | キヤノン株式会社 | Communication apparatus, control method of the same, and program |
CN107894718A (en) * | 2017-11-08 | 2018-04-10 | 江西洪都航空工业集团有限责任公司 | A kind of radio signal processing system and method based on phaselocked loop |
CN109981238A (en) * | 2019-02-25 | 2019-07-05 | 维沃移动通信有限公司 | Information transferring method, equipment and system |
KR20230067244A (en) | 2021-11-09 | 2023-05-16 | 주식회사 케이티 | Base station, user device and method for compensating phase shift |
CN116520262B (en) * | 2023-06-25 | 2023-10-17 | 成都华兴汇明科技有限公司 | Radar interference signal generation method and system based on vector signal source |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2102836C1 (en) * | 1991-01-08 | 1998-01-20 | Поволжский институт информатики, радиотехники и связи | Method for demodulation of digital signals and device for its realization |
JPH0522183A (en) * | 1991-07-15 | 1993-01-29 | Mitsubishi Electric Corp | Radio communication machine |
GB2311194B (en) * | 1996-03-12 | 2000-05-31 | Nokia Mobile Phones Ltd | Transmitting and receiving radio signals |
GB9815656D0 (en) * | 1998-07-17 | 1998-09-16 | Nokia Telecommunications Oy | Compensation of doppler shift in a mobile communication system |
EP1159790B1 (en) * | 1999-03-10 | 2002-10-16 | Nokia Corporation | Estimation of doppler shift compensation in a mobile communication system |
KR100315941B1 (en) * | 1999-11-24 | 2001-12-20 | 서평원 | Apparatus for power control of a mobile station |
DE60114561T2 (en) * | 2001-04-03 | 2006-08-10 | Mitsubishi Denki K.K. | Method and device for detecting a target signal and obstacle detection system |
US7027815B2 (en) * | 2002-09-05 | 2006-04-11 | Qualcomm, Incorporated | Compensating for frequency shift and timing shift in frequency and time tracking loops based on mobile unit velocity |
KR20050013306A (en) | 2003-07-28 | 2005-02-04 | 엘지전자 주식회사 | A gradual time correcting method considering system elapse time |
US7324832B2 (en) * | 2004-12-13 | 2008-01-29 | Broadcom Corporation | Method and system for a mobile architecture that supports a cellular or wireless network and broadcast utilizing an integrated single chip cellular and broadcast silicon solution |
WO2007068001A2 (en) * | 2005-12-09 | 2007-06-14 | Neocific, Inc. | Frequency correction in a multi-carrier communication system |
JP2007221310A (en) * | 2006-02-15 | 2007-08-30 | Kenwood Corp | Digital broadcast receiver, control method, and program |
JP5014820B2 (en) * | 2007-01-09 | 2012-08-29 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication system, user apparatus and communication method |
KR20080066321A (en) * | 2007-01-12 | 2008-07-16 | 삼성전자주식회사 | Apparatus and method for estimating frequency offset in wireless communication system |
IL181400A0 (en) * | 2007-02-18 | 2007-07-04 | Runcom Technologies Ltd | SATELLITE AND WiMAX COMMUNICATION SYSTEM AND METHOD |
JP2008206023A (en) * | 2007-02-22 | 2008-09-04 | Kyocera Corp | Wireless communication method, wireless communication terminal and wireless base station |
US8165230B2 (en) * | 2008-04-28 | 2012-04-24 | Newport Media, Inc. | Doppler frequency estimation in wireless communication systems |
US8619672B2 (en) * | 2008-06-11 | 2013-12-31 | Qualcomm Incorporated | Apparatus and method for multi-sector velocity mobile velocity and doppler estimate for synchronous communication systems |
US7928811B2 (en) * | 2008-12-22 | 2011-04-19 | Sirf Technologies, Inc. | System and method for use of a switched mode TCXO for receiver applications |
EP2280491B1 (en) * | 2009-07-31 | 2012-07-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for estimating a frequency shift and a time shift |
RU2422909C1 (en) * | 2009-11-06 | 2011-06-27 | Игорь Юрьевич Мацур | Method of detecting, identifying and determining vehicle speed and device for realising said method |
CN101702636B (en) * | 2009-12-03 | 2012-09-05 | 武汉虹信通信技术有限责任公司 | Method and device for detecting Doppler frequency offset of TD-SCDMA terminal |
CN101980453B (en) * | 2010-10-16 | 2013-02-06 | 中国科学院上海微系统与信息技术研究所 | Method and system for estimating and compensating Doppler frequency |
EP2633662B1 (en) * | 2010-10-29 | 2020-03-18 | Lilee Systems, Ltd | System and method of frequency offset compensation for radio system with fast doppler shift |
EP2490389B1 (en) * | 2011-02-18 | 2015-10-21 | Alcatel Lucent | Apparatus, method and computer program for determining a frequency offset |
CN202374290U (en) * | 2011-12-26 | 2012-08-08 | 中南大学 | Doppler frequency shift compensator based on two antennas |
CN102868435A (en) * | 2012-09-06 | 2013-01-09 | 中国铁路通信信号股份有限公司 | Self-adaptive array antenna system capable of compensating Doppler effect |
CN103078660B (en) * | 2013-01-06 | 2015-04-22 | 中国电子科技集团公司第十研究所 | Method for reducing capturing time of spreading code in large dynamic range |
CN103269259B (en) * | 2013-05-23 | 2016-09-21 | 小米科技有限责任公司 | A kind of signal demodulating method and device |
US9794903B2 (en) * | 2013-09-23 | 2017-10-17 | Ziva Corp. | Synchronization of distributed nodes |
-
2013
- 2013-05-23 CN CN201310195569.3A patent/CN103269259B/en active Active
-
2014
- 2014-04-29 WO PCT/CN2014/076514 patent/WO2014187231A1/en active Application Filing
- 2014-04-29 KR KR1020157013497A patent/KR101715799B1/en active IP Right Grant
- 2014-04-29 EP EP14800268.6A patent/EP3001621B1/en active Active
- 2014-04-29 BR BR112015014184A patent/BR112015014184A2/en not_active IP Right Cessation
- 2014-04-29 JP JP2015543307A patent/JP6096919B2/en active Active
- 2014-04-29 RU RU2015128654A patent/RU2607638C1/en active
- 2014-04-29 MX MX2015007308A patent/MX346064B/en active IP Right Grant
- 2014-04-29 IN IN4051DEN2015 patent/IN2015DN04051A/en unknown
-
2015
- 2015-11-20 US US14/946,987 patent/US9712974B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN103269259A (en) | 2013-08-28 |
US20160080906A1 (en) | 2016-03-17 |
EP3001621B1 (en) | 2018-03-21 |
KR20150079743A (en) | 2015-07-08 |
CN103269259B (en) | 2016-09-21 |
EP3001621A1 (en) | 2016-03-30 |
MX2015007308A (en) | 2015-09-10 |
JP2016504818A (en) | 2016-02-12 |
RU2607638C1 (en) | 2017-01-10 |
BR112015014184A2 (en) | 2017-07-11 |
EP3001621A4 (en) | 2016-12-14 |
WO2014187231A1 (en) | 2014-11-27 |
JP6096919B2 (en) | 2017-03-15 |
US9712974B2 (en) | 2017-07-18 |
MX346064B (en) | 2017-03-03 |
KR101715799B1 (en) | 2017-03-27 |
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