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 systemInfo
- 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
Links
- 230000005540 biological transmission Effects 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 230000003116 impacting effect Effects 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
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.
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)
| 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)
| 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 |
-
2004
- 2004-05-07 UA UAA200511747A patent/UA88873C2/en unknown
- 2004-05-07 CN CN2004800199005A patent/CN1883137B/en not_active Expired - Lifetime
-
2005
- 2005-11-11 ZA ZA200509154A patent/ZA200509154B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN1883137A (en) | 2006-12-20 |
| ZA200509154B (en) | 2007-04-25 |
| CN1883137B (en) | 2012-11-21 |
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