RU2000102347A - SYNCHRONIZATION OF A MOBILE STATION IN THE COMMUNICATION SYSTEM WITH AN EXTENDED SPECTRUM - Google Patents

SYNCHRONIZATION OF A MOBILE STATION IN THE COMMUNICATION SYSTEM WITH AN EXTENDED SPECTRUM

Info

Publication number
RU2000102347A
RU2000102347A RU2000102347/09A RU2000102347A RU2000102347A RU 2000102347 A RU2000102347 A RU 2000102347A RU 2000102347/09 A RU2000102347/09 A RU 2000102347/09A RU 2000102347 A RU2000102347 A RU 2000102347A RU 2000102347 A RU2000102347 A RU 2000102347A
Authority
RU
Russia
Prior art keywords
synchronization
code
frame
frame synchronization
pilot
Prior art date
Application number
RU2000102347/09A
Other languages
Russian (ru)
Other versions
RU2202149C2 (en
Inventor
Эрик ДАЛЬМАН
Мария ГУСТАФССОН
Риаз ЭСМАИЛЗАДЕХ
Original Assignee
Телефонактиеболагет Лм Эрикссон (Пабл)
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 US08/884,002 external-priority patent/US5991330A/en
Application filed by Телефонактиеболагет Лм Эрикссон (Пабл) filed Critical Телефонактиеболагет Лм Эрикссон (Пабл)
Publication of RU2000102347A publication Critical patent/RU2000102347A/en
Application granted granted Critical
Publication of RU2202149C2 publication Critical patent/RU2202149C2/en

Links

Claims (17)

1. Способ определения местоположения информации о синхронизации в передаваемом сигнале для передачи по каналу пилот-сигнала множественного доступа с кодовым разделением, заключающийся в том, что принимают повторяющийся кадр, включающий в себя множество временных интервалов синхронизации, идентифицируют код cр пилот-сигнала, повторяющийся в каждом временном интервале синхронизации повторяющегося кадра, и определяют местоположение кода cs кадровой синхронизации в, по меньшей мере, одном из временных интервалов синхронизации повторяющегося кадра.1. A method for determining the location of synchronization information in a transmitted signal for transmitting on a channel of a code division multiple access pilot signal, namely, that a repeating frame including a plurality of synchronization time slots is received, a pilot signal code c p is identified that repeats in each time slot synchronization recurring frame, and determine the location code c s frame sync to at least one of the synchronization slots repeating Gosia frame. 2. Способ по п.1, отличающийся тем, что код пилот-сигнала
Figure 00000001
и код кадровой синхронизации являются неперекрываемыми.2. The method according to claim 1, characterized in that the pilot code
Figure 00000001
and code frame synchronization are non-overlapping. 3. Способ по п.1, отличающийся тем, что коды
Figure 00000003
кадровой синхронизации, если они имеются более чем в одном из временных интервалов синхронизации, являются однозначными для каждого временного интервала синхронизации, и их повторяют в каждом кадре.3. The method according to claim 1, characterized in that the codes
Figure 00000003
frame synchronization, if they are available in more than one of the synchronization time intervals, are unique for each synchronization time interval, and they are repeated in each frame. 4. Способ по п.3, отличающийся тем, что код пилот-сигнала
Figure 00000004
и отдельные коды кадровой синхронизации являются не перекрываемыми.4. The method according to claim 3, characterized in that the pilot code
Figure 00000004
and individual frame synchronization codes are not overlapping. 5. Способ по п.3, отличающийся тем, что множество кодов кадровой синхронизации являются взаимно ортогональными. 5. The method according to claim 3, characterized in that the plurality of frame synchronization codes are mutually orthogonal. 6. Способ обработки сигнала, включающего в себя канал пилот-сигнала для получения информации о временной синхронизации, при этом сигнал включает в себя повторяющийся кадр, разделенный на множество временных интервалов синхронизации, причем каждый временной интервал включает в себя код
Figure 00000005
пилот-сигнала, а, по меньшей мере, один временной интервал включает в себя код
Figure 00000006
кадровой синхронизации, содержащий следующие операции осуществляют корреляцию принятого сигнала с кодом
Figure 00000007
пилот-сигнала для обнаружения местоположений временных интервалов синхронизации и осуществляют корреляцию принятого сигнала в том месте, которое находится внутри обнаруженного временного интервала синхронизации, с набором кодов
Figure 00000008
кадровой синхронизации для получения информации о привязке кадровой синхронизации по времени.6. A method for processing a signal including a pilot channel for obtaining time synchronization information, wherein the signal includes a repeating frame divided into a plurality of synchronization time intervals, each time interval including a code
Figure 00000005
pilot, and at least one time interval includes a code
Figure 00000006
frame synchronization, containing the following operations correlate the received signal with the code
Figure 00000007
a pilot signal for detecting locations of synchronization time intervals and correlating a received signal at a location that is within the detected synchronization time interval with a set of codes
Figure 00000008
frame synchronization to obtain information about the timing frame synchronization. 7. Способ по п.6, отличающийся тем, что вторая операция корреляции включает в себя этап установления соответствия кода
Figure 00000009
кадровой синхронизации местоположению внутри каждого из множества последовательно обнаруженных местоположений временных интервалов синхронизации в повторяющемся кадре.7. The method according to claim 6, characterized in that the second correlation operation includes the step of establishing the correspondence of the code
Figure 00000009
frame synchronization to a location within each of a plurality of sequentially detected locations of synchronization time slots in a repeating frame. 8. Способ по п.6, отличающийся тем, что код
Figure 00000010
кадровой синхронизации, если он находится более чем в одном из временных интервалов синхронизации, является однозначным для каждого временного интервала синхронизации, а вторая операция корреляции включает в себя этап установления соответствия множества кодов кадровой синхронизации местоположению внутри обнаруженного временного интервала синхронизации.8. The method according to claim 6, characterized in that the code
Figure 00000010
frame synchronization, if it is located in more than one of the synchronization time intervals, is unique for each synchronization time interval, and the second correlation operation includes the step of matching the set of frame synchronization codes with the location inside the detected synchronization time interval. 9. Способ по п.8, отличающийся тем, что множество кодов кадровой синхронизации являются взаимно ортогональными. 9. The method of claim 8, wherein the plurality of frame synchronization codes are mutually orthogonal. 10. Способ по п. 6, отличающийся тем, что вторая операция корреляции дополнительно включает в себя этап распознавания информации о привязке кадровой синхронизации по времени, исходя из известного относительного положения в повторяющемся кадре относительно кода
Figure 00000011
кадровой синхронизации.10. The method according to p. 6, characterized in that the second correlation operation further includes the step of recognizing information about the binding of frame synchronization in time, based on the known relative position in the repeating frame relative to the code
Figure 00000011
frame synchronization. 11. Способ по п.6, отличающийся тем, что код cp пилот-сигнала и код
Figure 00000012
кадровой синхронизации являются неперекрываемыми.11. The method according to claim 6, characterized in that the pilot code c p and the code
Figure 00000012
frame synchronization are non-overlapping. 12. Устройство для обработки сигнала множественного доступа с кодовым разделением, включающего в себя канал пилот-сигнала для получения информации о временной синхронизации, содержащее приемник для приема сигнала, включающего в себя повторяющийся кадр, разделенный на множество временных интервалов синхронизации, причем каждый временной интервал включает в себя код
Figure 00000013
пилот-сигнала, а, по меньшей мере, один временной интервал включает в себя код
Figure 00000014
кадровой синхронизации и устройство поиска канала пилот-сигнала, соединенное с приемником, для приема соответствующей каналу пилот-сигнала части сигнала, причем устройство поиска функционирует так, что осуществляет корреляцию принятой части, соответствующей каналу пилот-сигнала, с кодом
Figure 00000015
пилот-сигнала для определения местоположения временного интервала синхронизации, и осуществляет корреляцию принятой части, соответствующей каналу пилот-сигнала в месте, находящемся в пределах, по меньшей мере, одного из найденных временных интервалов синхронизации, с кодом cs кадровой синхронизации для определения информации о привязке кадровой синхронизации по времени.12. An apparatus for processing a code division multiple access signal including a pilot signal channel for acquiring timing information, comprising: a receiver for receiving a signal including a repeating frame divided into a plurality of synchronization time slots, each time slot including code
Figure 00000013
pilot, and at least one time interval includes a code
Figure 00000014
frame synchronization and a pilot channel search device connected to the receiver for receiving a portion of the signal corresponding to the pilot channel, the search device functioning to correlate the received portion corresponding to the pilot channel with the code
Figure 00000015
the pilot signal to determine the location of the synchronization time interval, and correlates the received part corresponding to the pilot channel in a location within at least one of the found synchronization time intervals with the frame synchronization code c s to determine the binding information time frame synchronization. 13. Устройство по п.11, отличающееся тем, что при своей работе устройство поиска дополнительно устанавливает соответствие кода
Figure 00000016
кадровой синхронизации местоположению внутри каждого из множества последовательно найденных временных интервалов синхронизации в повторяющемся кадре.13. The device according to claim 11, characterized in that during its operation, the search device further establishes the correspondence of the code
Figure 00000016
frame synchronization to a location within each of a plurality of sequentially found synchronization time intervals in a repeating frame. 14. Устройство по п.12, отличающееся тем, что код
Figure 00000017
кадровой синхронизации, если он находится более чем в одном из временных интервалов синхронизации, является однозначным для каждого временного интервала синхронизации, причем корреляция принятой части, соответствующей каналу пилот-сигнала, с кодом кадровой синхронизации
Figure 00000018
, осуществляемая устройством поиска, содержит вторую операцию корреляции, включающую в себя этап установления соответствия множества кодов кадровой синхронизации местоположению внутри каждого временного интервала синхронизации.14. The device according to p. 12, characterized in that the code
Figure 00000017
frame synchronization, if it is located in more than one of the synchronization time intervals, is unique for each synchronization time interval, moreover, the correlation of the received part corresponding to the pilot channel with the frame synchronization code
Figure 00000018
carried out by the search device comprises a second correlation operation including the step of matching a plurality of frame synchronization codes to a location within each synchronization time interval. 15. Устройство по п.14, отличающееся тем, что множество кодов кадровой синхронизации являются взаимно ортогональными. 15. The device according to 14, characterized in that the plurality of frame synchronization codes are mutually orthogonal. 16. Устройство по п.12, отличающееся тем, что при своей работе устройство поиска дополнительно распознает информацию о привязке кадровой синхронизации по времени, исходя из известного относительного положения в повторяющемся кадре относительно кода
Figure 00000019
кадровой синхронизации.16. The device according to p. 12, characterized in that during its operation, the search device further recognizes information about the binding of frame synchronization in time, based on the known relative position in the repeating frame relative to the code
Figure 00000019
frame synchronization. 17. Устройство по п.12, отличающееся тем, что код
Figure 00000020
пилот-сигнала и код
Figure 00000021
кадровой синхронизации являются неперекрываемыми.17. The device according to p. 12, characterized in that the code
Figure 00000020
pilot signal and code
Figure 00000021
frame synchronization are non-overlapping.
RU2000102347/09A 1997-06-27 1998-06-12 Synchronizing mobile station in expanded-spectrum communication system RU2202149C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/884,002 1997-06-27
US08/884,002 US5991330A (en) 1997-06-27 1997-06-27 Mobile Station synchronization within a spread spectrum communication systems

Publications (2)

Publication Number Publication Date
RU2000102347A true RU2000102347A (en) 2001-10-27
RU2202149C2 RU2202149C2 (en) 2003-04-10

Family

ID=25383775

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2000102347/09A RU2202149C2 (en) 1997-06-27 1998-06-12 Synchronizing mobile station in expanded-spectrum communication system

Country Status (15)

Country Link
US (1) US5991330A (en)
EP (1) EP0992122B1 (en)
JP (2) JP3408545B2 (en)
KR (1) KR100363668B1 (en)
CN (1) CN1123142C (en)
AR (1) AR018001A1 (en)
AU (1) AU737540B2 (en)
BR (2) BR9810325B1 (en)
CA (1) CA2293305C (en)
DE (1) DE69815105T2 (en)
MY (1) MY117414A (en)
RU (1) RU2202149C2 (en)
TW (1) TW387186B (en)
WO (1) WO1999000912A1 (en)
ZA (1) ZA984725B (en)

Families Citing this family (107)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09307951A (en) * 1996-03-15 1997-11-28 Matsushita Electric Ind Co Ltd Spread spectrum communication equipment
US6765895B1 (en) 1996-03-15 2004-07-20 Matsushita Electric Industrial Co., Ltd. Spectrum spread communication system
US6185244B1 (en) 1997-08-29 2001-02-06 Telefonaktiebolaget Lm Ericsson Cell searching in a CDMA communications system
US5930366A (en) * 1997-08-29 1999-07-27 Telefonaktiebolaget L M Ericsson Synchronization to a base station and code acquisition within a spread spectrum communication system
KR100304924B1 (en) * 1997-12-30 2001-11-22 서평원 Inter-frequency handoff control method in cdma cellular system
US6208632B1 (en) * 1998-01-29 2001-03-27 Sharp Laboratories Of America System and method for CDMA channel estimation
US6526039B1 (en) * 1998-02-12 2003-02-25 Telefonaktiebolaget Lm Ericsson Method and system for facilitating timing of base stations in an asynchronous CDMA mobile communications system
JP3484072B2 (en) * 1998-04-14 2004-01-06 株式会社日立国際電気 Despreading circuit
US6526035B1 (en) * 1998-06-09 2003-02-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for identifying the source of a digital signal
KR20000009140A (en) * 1998-07-21 2000-02-15 윤종용 Apparatus and method for initial capture and frame synchronization of spread spectrum communication system
DE19840232C1 (en) * 1998-09-03 1999-10-28 Siemens Ag Synchronising subscriber station in radio communication system
GB2342017B (en) 1998-09-24 2003-10-15 Nokia Mobile Phones Ltd Communication network
GB2342018B (en) * 1998-09-24 2003-11-05 Nokia Mobile Phones Ltd Communication network
US6625200B1 (en) * 1999-01-25 2003-09-23 Ericsson Inc. Multi-stage CDMA synchronization with parallel execution
US6618458B1 (en) * 1999-01-29 2003-09-09 Nec Corporation Method and apparatus for signal receiving synchronization
KR100287896B1 (en) * 1999-02-06 2001-04-16 서평원 Cell Search Method in Mobile Communication System
US6567482B1 (en) * 1999-03-05 2003-05-20 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for efficient synchronization in spread spectrum communications
US7643540B2 (en) 1999-03-15 2010-01-05 Lg Electronics Inc. Pilot signals for synchronization and/or channel estimation
DE19911480C2 (en) * 1999-03-15 2003-06-18 Siemens Ag Method for synchronizing base stations of a radio communication system
US7496132B2 (en) 1999-03-15 2009-02-24 Kg Electronics Inc. Pilot signals for synchronization and/or channel estimation
KR100294711B1 (en) * 1999-03-15 2001-07-12 서평원 Frame Synchronization Method using Optimal Pilot Symbol
DE19912856A1 (en) * 1999-03-22 2000-10-19 Siemens Ag Method and radio communication system for the synchronization of subscriber stations
DE19917337C2 (en) 1999-04-16 2002-02-28 Infineon Technologies Ag Method and device for synchronizing a mobile radio receiver with a frame structure of a radio signal
KR100290678B1 (en) * 1999-04-24 2001-05-15 윤종용 Apparatus for searching cell and method thereof in asynchronous mobile telecommunication system
GB2350018B (en) * 1999-05-08 2003-07-30 Motorola Ltd A method of and apparatus for estimating a characteristic of a signal
KR100605977B1 (en) * 1999-06-15 2006-07-28 삼성전자주식회사 Apparatus and method for searching cell of mobile station in cdma communication system
US6363060B1 (en) * 1999-06-30 2002-03-26 Qualcomm Incorporated Method and apparatus for fast WCDMA acquisition
KR100830390B1 (en) * 1999-06-30 2008-05-20 퀄컴 인코포레이티드 Method and apparatus for fast wcdma acquisition
CN1132391C (en) * 1999-08-09 2003-12-24 华为技术有限公司 Pilot-type synchronous channel structure for mobile communication system
US6868075B1 (en) 1999-09-28 2005-03-15 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for compressed mode communications over a radio interface
DE19956492A1 (en) * 1999-11-24 2001-05-31 Siemens Ag Format identification (TFCI) bits display method for compressed mode frame transmission esp. in UMTS mobile radio standard
US6760366B1 (en) * 1999-11-29 2004-07-06 Qualcomm Incorporated Method and apparatus for pilot search using a matched filter
KR100720570B1 (en) 2000-02-16 2007-05-22 엘지전자 주식회사 Method of frame synchronization and supporting compressed mode in mobile communicatin system
ATE510368T1 (en) * 2000-02-16 2011-06-15 Lg Electronics Inc METHOD FOR FRAME SYNCHRONIZATION USING A PILOT PATTERN IN A COMPRESSED MODE
GB2360426B (en) * 2000-03-14 2004-06-02 Nec Technologies Method for acquisition of slot timing in a direct sequence spread spectrum communication receiver
KR100709088B1 (en) 2000-04-07 2007-04-19 인터디지탈 테크날러지 코포레이션 Base station synchronization for wireless communication systems
WO2002011317A1 (en) * 2000-06-20 2002-02-07 Linkair Communications, Inc. A tdd framing method for physical layer of a wireless system
KR100373338B1 (en) 2000-06-24 2003-02-25 주식회사 팬택앤큐리텔 Apparatus for tracking CDMA code timing
EP1463216A3 (en) 2000-08-04 2008-12-31 Interdigital Technology Corporation Periodic cell search
JPWO2002032029A1 (en) * 2000-10-06 2004-02-26 株式会社鷹山 Receiver
TW490981B (en) * 2000-10-30 2002-06-11 Ind Tech Res Inst Method and device for code group identification and frame boundary synchronization
US20020086639A1 (en) * 2000-12-28 2002-07-04 Siemens Information And Communication Products, Inc. Air interface frame structure for environments with bursted interference
KR100383059B1 (en) * 2001-01-10 2003-05-09 주식회사 카서 Simplified Synchronization Methods for CDMA Modem
US6826244B2 (en) 2001-02-27 2004-11-30 Interdigital Technology Corporation Initial cell search algorithm for 3G FDD wireless communication systems
EP1391059B1 (en) * 2001-05-31 2009-01-21 Magnolia Broadband, Inc. Communication device with smart antenna using a quality-indication signal
US8249187B2 (en) 2002-05-09 2012-08-21 Google Inc. System, method and apparatus for mobile transmit diversity using symmetric phase difference
DE60143859D1 (en) * 2001-06-12 2011-02-24 Ericsson Telefon Ab L M SYNCHRONIZATION IN A TERRESTRIAL UMTS RADIO ACCESS NETWORK (UTRAN)
US6744747B2 (en) * 2001-08-22 2004-06-01 Qualcomm, Incorporated Method & apparatus for W-CDMA handoff searching
US6768768B2 (en) * 2001-09-19 2004-07-27 Qualcomm Incorporated Method and apparatus for step two W-CDMA searching
JP3974581B2 (en) 2001-11-29 2007-09-12 インターデイジタル テクノロジー コーポレーション System and method for using primary and secondary synchronization codes during cell search
US7133437B2 (en) * 2002-01-31 2006-11-07 Qualcomm Incorporated Pilot interpolation for a gated pilot with compensation for induced phase changes
US7813311B2 (en) 2002-02-05 2010-10-12 Interdigital Technology Corporation Method and apparatus for synchronizing base stations
FI116179B (en) * 2002-03-13 2005-09-30 Nokia Corp Method and system for determining propagation delay and electronic device
US6996189B1 (en) * 2002-07-26 2006-02-07 Jabil Circuit, Inc. Symmetric spherical QAM constellation
US7042857B2 (en) 2002-10-29 2006-05-09 Qualcom, Incorporated Uplink pilot and signaling transmission in wireless communication systems
US7505741B2 (en) * 2002-11-01 2009-03-17 Magnolia Broadband Inc. Processing diversity signals using a delay
US7061966B2 (en) * 2003-02-27 2006-06-13 Motorola, Inc. Frame synchronization and scrambling code indentification in wireless communications systems and methods therefor
CN100544240C (en) * 2003-04-01 2009-09-23 北京邮电大学 The method for synchronizing time that is used for MC-CDMA system
US7418067B1 (en) 2003-04-14 2008-08-26 Magnolia Broadband Inc. Processing diversity signals at a mobile device using phase adjustments
JP4253703B2 (en) * 2003-09-30 2009-04-15 Ｏｋｉセミコンダクタ株式会社 Receiver
US7430430B2 (en) * 2003-12-16 2008-09-30 Magnolia Broadband Inc. Adjusting a signal at a diversity system
US7272359B2 (en) * 2004-01-26 2007-09-18 Magnolia Broadband Inc. Communicating signals according to a quality indicator using multiple antenna elements
US7558591B2 (en) * 2004-10-12 2009-07-07 Magnolia Broadband Inc. Determining a power control group boundary of a power control group
US7515877B2 (en) * 2004-11-04 2009-04-07 Magnolia Broadband Inc. Communicating signals according to a quality indicator and a time boundary indicator
US8831115B2 (en) 2004-12-22 2014-09-09 Qualcomm Incorporated MC-CDMA multiplexing in an orthogonal uplink
US7616930B2 (en) * 2005-05-24 2009-11-10 Magnolia Broadband Inc. Determining a phase adjustment in accordance with power trends
US20060267983A1 (en) * 2005-05-24 2006-11-30 Magnolia Broadband Inc. Modifying a signal by adjusting the phase and amplitude of the signal
CN100377519C (en) * 2005-06-17 2008-03-26 凯明信息科技股份有限公司 Relative method for primary synchronizing in CDMA mobile communication system
US7783267B1 (en) 2005-06-23 2010-08-24 Magnolia Broadband Inc. Modifying a signal in response to quality indicator availability
US20090136037A1 (en) * 2005-08-19 2009-05-28 Hiroki Haga Base station device and mobile station device
US20090147757A1 (en) * 2005-08-22 2009-06-11 Matsushita Electric Industrial Co., Ltd. Base station device and mobile station device
US7633905B1 (en) 2005-09-02 2009-12-15 Magnolia Broadband Inc. Calibrating a transmit diversity communication device
US7835702B1 (en) 2005-09-15 2010-11-16 Magnolia Broadband Inc. Calculating a diversity parameter adjustment according to previously applied diversity parameter adjustments
US7746946B2 (en) * 2005-10-10 2010-06-29 Magnolia Broadband Inc. Performing a scan of diversity parameter differences
US7630445B1 (en) 2005-10-25 2009-12-08 Magnolia Broadband Inc. Establishing slot boundaries of slots of a diversity control feedback signal
US7796717B2 (en) * 2005-11-02 2010-09-14 Magnolia Brandband Inc. Modifying a signal according to a diversity parameter adjustment
US7965987B2 (en) * 2005-11-03 2011-06-21 Magnolia Broadband Inc. Amplifying a transmit signal using a fractional power amplifier
EP2012454B1 (en) 2006-04-25 2019-08-21 NEC Corporation Pilot signal transmitting method and wireless communication apparatus
US8665799B2 (en) 2006-09-14 2014-03-04 Qualcomm Incorporated Beacon assisted cell search in a wireless communication system
UA94482C2 (en) * 2006-10-03 2011-05-10 Квелкомм Інкорпорейтед Synchronization transmission in a wireless communication system
US7949069B2 (en) * 2006-10-26 2011-05-24 Magnolia Broadband Inc. Method, system and apparatus for applying hybrid ARQ to the control of transmit diversity
US8150441B2 (en) 2006-11-06 2012-04-03 Magnolia Broadband Inc. Modifying a signal by controlling transmit diversity parameters
US8199735B2 (en) 2006-12-12 2012-06-12 Google Inc. Method, system and apparatus for the control of transmit diversity
US7663545B2 (en) * 2006-12-26 2010-02-16 Magnolia Broadband Inc. Method, system and apparatus for determining antenna weighting for transmit diversity
US8027374B2 (en) * 2006-12-27 2011-09-27 Magnolia Broadband Inc. Method, system and apparatus for transmit diversity control
US20080160990A1 (en) * 2006-12-29 2008-07-03 Yair Karmi System, method and apparatus for identification of power control using reverse rate indication
US7869535B2 (en) * 2007-02-28 2011-01-11 Magnolia Broadband Inc. Method, system and apparatus for phase control of transmit diversity signals
US20080227414A1 (en) 2007-03-01 2008-09-18 Yair Karmi System, method and apparatus for transmit diversity control based on variations in propagation path
US7991365B2 (en) * 2007-03-01 2011-08-02 Magnolia Broadband Inc. Method, system and apparatus for estimation of propagation path variability of a transmit diversity channel
US8750811B2 (en) * 2007-03-14 2014-06-10 Google Inc. Method, apparatus and system for phase difference adjustment in transmit diversity
US8032091B2 (en) * 2007-03-14 2011-10-04 Magnolia Broadband Inc. Method, apparatus and system for providing transmit diversity feedback during soft handoff
WO2008113022A1 (en) * 2007-03-14 2008-09-18 Magnolia Broadband Inc. Method, apparatus and system for providing transmit diversity feedback
US8699968B2 (en) 2007-03-14 2014-04-15 Google Inc. Using multiple and a single feedback for UE uplink beamforming in soft handoff
US8036603B2 (en) 2007-03-15 2011-10-11 Magnolia Broadband Inc. Method, apparatus and system for providing feedback to a transmit diversity device
WO2008113038A1 (en) * 2007-03-15 2008-09-18 Magnolia Broadband Inc. Method of controlling a transmit diversity device
US8046017B2 (en) * 2007-03-15 2011-10-25 Magnolia Broadband Inc. Method and apparatus for random access channel probe initialization using transmit diversity
US8032092B2 (en) * 2007-12-06 2011-10-04 Magnolia Broadband Inc. System, apparatus and method for introducing antenna pattern variability
US8891557B2 (en) * 2008-05-21 2014-11-18 Qualcomm Incorporated Method and apparatus for sending information via selection of resources used for transmission
JP5172609B2 (en) * 2008-10-31 2013-03-27 株式会社東芝 Wireless communication apparatus, wireless terminal, and wireless communication method
US8442457B2 (en) * 2009-09-08 2013-05-14 Google Inc. System and method for adaptive beamforming for specific absorption rate control
US8958757B2 (en) 2010-05-10 2015-02-17 Google Inc. System, method and apparatus for mobile transmit diversity using symmetric phase difference
CN103210696B (en) 2010-05-26 2016-06-08 谷歌公司 Initialized method and apparatus is detected for using transmitting diversity to carry out RACH
US9048913B2 (en) 2010-07-06 2015-06-02 Google Inc. Method and apparatus for adaptive control of transmit diversity to provide operating power reduction
US8849222B2 (en) 2011-02-16 2014-09-30 Google Inc. Method and device for phase adjustment based on closed-loop diversity feedback
KR20180017092A (en) 2015-06-12 2018-02-20 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Buoyancy module
US10348438B2 (en) * 2017-09-04 2019-07-09 Huawei Technologies Co., Ltd. Spur removal in pilot-tone OPM
RU2703509C1 (en) * 2018-10-24 2019-10-18 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский университет "Московский институт электронной техники" Synchronization method in systems with direct spectrum expansion

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943974A (en) * 1988-10-21 1990-07-24 Geostar Corporation Detection of burst signal transmissions
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5260967A (en) * 1992-01-13 1993-11-09 Interdigital Technology Corporation CDMA/TDMA spread-spectrum communications system and method
GB9201879D0 (en) * 1992-01-29 1992-03-18 Millicom Holdings Uk Ltd Communication system
US5603081A (en) * 1993-11-01 1997-02-11 Telefonaktiebolaget Lm Ericsson Method for communicating in a wireless communication system
JP3003839B2 (en) * 1993-11-08 2000-01-31 エヌ・ティ・ティ移動通信網株式会社 CDMA communication method and apparatus
JP3158821B2 (en) * 1993-12-14 2001-04-23 株式会社日立製作所 CDMA mobile communication system and apparatus
JP3140317B2 (en) * 1995-02-16 2001-03-05 株式会社日立国際電気 Pilot signal transmission method
JP3372135B2 (en) * 1995-05-24 2003-01-27 ソニー株式会社 Communication terminal device
KR100212307B1 (en) * 1995-06-13 1999-08-02 다치카와 게이지 Acquisition method and system of spreading code
US5805583A (en) * 1995-08-25 1998-09-08 Terayon Communication Systems Process for communicating multiple channels of digital data in distributed systems using synchronous code division multiple access
US5793757A (en) * 1996-02-13 1998-08-11 Telefonaktiebolaget L M Ericsson (Publ) Telecommunication network having time orthogonal wideband and narrowband sytems
JPH1051354A (en) * 1996-05-30 1998-02-20 N T T Ido Tsushinmo Kk Ds-cdma transmission method

Similar Documents

Publication Publication Date Title
RU2000102347A (en) SYNCHRONIZATION OF A MOBILE STATION IN THE COMMUNICATION SYSTEM WITH AN EXTENDED SPECTRUM
US6370134B1 (en) CDMA radio communication apparatus
CN1123142C (en) Mobile station synchronization within a spread spectrum communications system
KR100790922B1 (en) Method and apparatus for synchronization code detection in a wireless communication system
JP2003037580A5 (en)
EP1404032A3 (en) Direct sequence code division multiple access receiver and method of synchronisation therefor
GB2304500A (en) Method and apparatus for location finding in a cdma system
JP2005500737A5 (en)
DK1201040T3 (en) Channel mapping apparatus and method for a common packet data channel in a WCDMA mobile communication system
EP2091159A3 (en) Cell search method and apparatus for mobile station in mobile communication system
EP1988736A3 (en) Method and system for locating a mobile subscriber in a CDMA communication system
WO1996001012B1 (en) A method and apparatus for identifying a coded communication signal
EP1592144A3 (en) Radio communication apparatus and method
EP1191704A3 (en) Method and apparatus for acquiring slot timing and frequency offset correction
KR100770231B1 (en) Synchronisation of mobile equipment in time division duplex ???? system
EP0981221A3 (en) System and method for code division multiple access communication, and base station and terminal apparatus for same system
EP0794627A3 (en) Spread spectrum communication apparatus
US6882633B2 (en) Method and device for synchronizing a mobile radio receiver with a frame structure of a radio signal
EP1850512A3 (en) Synchronization establishing method of mobile station in mobile communication system
EP0817405A2 (en) Mobile communication system and control channel setting method in mobile communication system
KR100566249B1 (en) Fast cell searching apparatus and method in umts system
EP1083683A3 (en) Method and apparatus for performing an asynchronous communication with a base station
KR101208541B1 (en) Method For Detecting The Position Of Synchronization Signal, And Method For Searching Cell Using The Same
TH33085A (en) Synchronization of a mobile station within a radiated spectrum communication system.
KR960006336A (en) Mobile terminal location method using spread spectrum method and bidirectional wireless call system