[go: up one dir, main page]

UA88873C2 - Techniques and apparatuses for transmission and reception of pilot and data with fast frequency hopping with a code division multiplexed pilot in ofdma system - Google Patents

Techniques and apparatuses for transmission and reception of pilot and data with fast frequency hopping with a code division multiplexed pilot in ofdma system

Info

Publication number
UA88873C2
UA88873C2 UAA200511747A UAA200511747A UA88873C2 UA 88873 C2 UA88873 C2 UA 88873C2 UA A200511747 A UAA200511747 A UA A200511747A UA A200511747 A UAA200511747 A UA A200511747A UA 88873 C2 UA88873 C2 UA 88873C2
Authority
UA
Ukraine
Prior art keywords
pilot
transmitter
wideband
frequency hopping
division multiplexed
Prior art date
Application number
UAA200511747A
Other languages
Russian (ru)
Ukrainian (uk)
Inventor
Авниш АГРАВАЛ
Эдвард Харрисон ТИГ
Original Assignee
Квелкомм Инкорпорейтед
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
Application filed by Квелкомм Инкорпорейтед filed Critical Квелкомм Инкорпорейтед
Publication of UA88873C2 publication Critical patent/UA88873C2/en

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

Techniques are provided lo support fast frequency hopping with a code division multiplexed (CDM) pilot in a multi-carrier communication system (e.g., an OFDMA system). Each transmitter (e.g., each terminal) in the system transmits a wideband pilot on all subbands to allow a receiver (e.g., a base station) to estimate the entire channel response at the same time. The wideband pilot for each transmitter may be generated using direct sequence spread spectrum processing and based on a pseudo-random number (PN) code assigned to that transmitter. This allows the receiver to individually identify and recover multiple wideband pilots transmitted concurrently by multiple transmitters. For a time division multiplexed (TDM)/CDM pilot transmission scheme, each transmitter transmits the wideband pilot in bursts. For a continuous CDM pilot transmission scheme, each transmitter continuously transmits the wideband pilot, albeit at a low transmit power level. Any frequency hopping rate may be supported without impacting pilot overhead.
UAA200511747A 2003-05-12 2004-05-07 Techniques and apparatuses for transmission and reception of pilot and data with fast frequency hopping with a code division multiplexed pilot in ofdma system UA88873C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47010703P 2003-05-12 2003-05-12

Publications (1)

Publication Number Publication Date
UA88873C2 true UA88873C2 (en) 2009-12-10

Family

ID=37520264

Family Applications (1)

Application Number Title Priority Date Filing Date
UAA200511747A UA88873C2 (en) 2003-05-12 2004-05-07 Techniques and apparatuses for transmission and reception of pilot and data with fast frequency hopping with a code division multiplexed pilot in ofdma system

Country Status (3)

Country Link
CN (1) CN1883137B (en)
UA (1) UA88873C2 (en)
ZA (1) ZA200509154B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8369299B2 (en) * 2007-05-07 2013-02-05 Qualcomm Incorporated Method and apparatus for multiplexing CDM pilot and FDM data
CN102685057B (en) * 2007-09-12 2015-06-17 夏普株式会社 Transmission apparatus and method, processor, OFDM transmission apparatus and method, and wireless communication system
KR101448653B1 (en) * 2007-10-01 2014-10-15 엘지전자 주식회사 Frequency hopping pattern and uplink signal transmission method using the same
CN104734833B (en) * 2007-12-04 2019-04-23 蔚蓝公司 Inhibit the method and apparatus of inter-cell interference
US20100098042A1 (en) * 2008-10-21 2010-04-22 Paul Wilkinson Dent Using the same multiplexed radio resource for pilot and information signals
GB2465628B (en) * 2008-11-27 2011-03-23 Ipwireless Inc Communication system,communication units,and method for employing a pilot transmission scheme
FR2969436A1 (en) * 2010-12-21 2012-06-22 France Telecom PROTECTION AGAINST THE DETECTION OF ALERT SIGNALS
CN106656372B (en) * 2016-12-12 2020-04-10 西安空间无线电技术研究所 Frequency band interference detection method of frequency hopping system
CN112152663B (en) * 2020-09-25 2021-08-31 中国电子科技集团公司第五十四研究所 An anti-multipath and anti-jamming signal receiving method based on time division multiple access
CN112152664B (en) * 2020-09-25 2021-07-27 中国电子科技集团公司第五十四研究所 An anti-multipath and anti-jamming signal transmission method based on time division multiple access

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000151557A (en) * 1998-11-13 2000-05-30 Nec Corp Cdma communication apparatus
US6473467B1 (en) * 2000-03-22 2002-10-29 Qualcomm Incorporated Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system

Also Published As

Publication number Publication date
CN1883137A (en) 2006-12-20
ZA200509154B (en) 2007-04-25
CN1883137B (en) 2012-11-21

Similar Documents

Publication Publication Date Title
TW200509578A (en) Fast frequency hopping with a code division multiplexed pilot in an OFDMA system
TW200742318A (en) Method of transmitting pilot for multiple carrier system
DK2282438T3 (en) Pilot transmission schemes for wireless multi-carrier communication systems
TW200620872A (en) Wireless communication system with improved broadcast coverage
TW200623691A (en) Quasi-orthogonal multiplexing for a multi-carrier communication system
RU2008146846A (en) SENDING DEVICE AND RECEIVING DEVICE
MX2009013557A (en) Transmitting spread signal in mobile communication system.
WO2007121042A3 (en) Method and system for communications with reduced complexity receivers
WO2004040827A3 (en) Uplink pilot and signaling transmission in wireless communication systems
CA2497057A1 (en) Transmission apparatus and method for use in mobile communication system based on orthogonal frequency division multiplexing scheme
TW200616474A (en) Method and apparatus for transmission and reception of narrowband signals within a wideband communication system
WO2007084988A3 (en) Method and apparatus for pilot multiplexing in a wireless communication system
MY146296A (en) Transmission of signaling in an ofdm-based system
WO2011056001A3 (en) Terminal device for transmitting a power headroom report in a multi-carrier communication system, and method for same
WO2007130011A8 (en) Method and system for processing reference signals in ofdm systems using transmission time interval groupings
GB2463211A (en) Transmitting spread signal in communication system
TW200704052A (en) Constant broadcast channel timing in a wireless communication system
RU2008100226A (en) BASE STATION, MOBILE STATION AND COMMUNICATION METHOD
TW200746734A (en) Method and apparatus for pilot multiplexing in a wireless communication system
RU2009101072A (en) TRANSMITTER AND COMMUNICATION METHOD
UA88873C2 (en) Techniques and apparatuses for transmission and reception of pilot and data with fast frequency hopping with a code division multiplexed pilot in ofdma system
UA90244C2 (en) Pilot transmissions schemes for use in wireless multi-carrier communication systems
EP1555783A3 (en) Pilot-based channel estimation method for MC-CDMA system using frequency interleaving
TW200637292A (en) Method and apparatus for pilot channel transmission and reception within a multi-carrier communication system
TW200635260A (en) Method and apparatus to increase the diversity order for a multi-carrier FDM system