JP2001513308A - Is−95規格のスペクトラム拡散通信システムにおける疑似雑音符号の追跡装置及び方法 - Google Patents
Is−95規格のスペクトラム拡散通信システムにおける疑似雑音符号の追跡装置及び方法Info
- Publication number
- JP2001513308A JP2001513308A JP53468299A JP53468299A JP2001513308A JP 2001513308 A JP2001513308 A JP 2001513308A JP 53468299 A JP53468299 A JP 53468299A JP 53468299 A JP53468299 A JP 53468299A JP 2001513308 A JP2001513308 A JP 2001513308A
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- JP
- Japan
- Prior art keywords
- signal
- pseudo
- noise
- time
- code
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0022—PN, e.g. Kronecker
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/709—Correlator structure
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 受信された疑似雑音符号を追跡する方法であって、 誤差信号に応じて、定刻の疑似雑音信号と、チップ間隔の半分未満だけ遅延し た定刻前の疑似雑音信号と、チップ間隔の半分未満だけ進んだ定刻後の疑似雑音 信号とを発生させる段階と、 上記誤差信号を発生させるため、受信された信号を上記定刻前の疑似雑音信号 及び上記定刻後の疑似雑音信号と相関演算する段階とを有し、 これにより、上記定刻の疑似雑音信号が疑似雑音符号に追従するループが形成 される方法。 2. 上記発生させる段階は上記定刻前の疑似雑音信号をチップ間隔の4分の1 だけ遅延させる段階を含む請求項1記載の方法。 3. 上記発生させる段階は上記定刻後の疑似雑音信号をチップ間隔の4分の1 だけ遅延させる段階を含む請求項1又は2記載の方法。 4. 上記相関演算する段階は、 定刻前の信号を発生させるため、上記受信された信号を上記定刻前の疑似雑音 信号と相関演算し、 定刻後の信号を発生させるため、上記受信された信号を上記定刻後の疑似雑音 信号と相関演算し、 上記誤差信号を発生させるため、上記定刻前の信号を上記定刻後の信号から減 算する段階を有する、請求項1乃至3のうちいずれか一項記載の方法。 5. 上記相関演算する段階は、 合成された疑似雑音信号を発生させるため、上記定刻後の疑似雑 音信号を上記定刻前の疑似雑音信号から減算し、 上記受信された信号を上記合成された疑似雑音信号と混合し、上記誤差信号を 発生させるため積分する段階を有する、請求項1乃至3のうちいずれか一項記載 の方法。 6. 受信された疑似雑音信号を追跡する装置であって、 誤差信号に応じて、定刻の疑似雑音信号と、チップ間隔の半分未満だけ遅延し た定刻前の疑似雑音信号と、チップ間隔の半分未満だけ進んだ定刻後の疑似雑音 信号とを発生させる手段と、 上記誤差信号を発生させるため、受信された信号を上記定刻前の疑似雑音信号 及び上記定刻後の疑似雑音信号と相関演算する相関演算手段とを有し、 これにより、上記定刻通りの疑似雑音信号が疑似雑音符号に追従するループが 形成される装置。 7. 上記発生させる手段は上記定刻前の疑似雑音信号をチップ間隔の4分の1 だけ遅延させる手段を含む請求項6記載の装置。 8. 上記発生させる手段は上記定刻後の疑似雑音信号をチップ間隔の4分の1 だけ遅延させる手段を含む請求項6又は7記載の装置。 9. 上記相関演算手段は、 定刻前の信号を発生させるため、上記受信された信号を上記定刻前の疑似雑音 信号と相関演算する手段と、 定刻後の信号を発生させるため、上記受信された信号を上記定刻後の疑似雑音 信号と相関演算する手段と、 上記誤差信号を発生させるため、上記定刻前の信号を上記定刻後の信号から減 算する手段とを有する、請求項6乃至8のうちいずれか一項記載の装置。 10. 上記相関演算手段は、 合成された疑似雑音信号を発生させるため、上記定刻後の疑似雑音信号を上記 定刻前の疑似雑音信号から減算する手段と、 上記受信された信号を上記合成された疑似雑音信号と混合し、上記誤差信号を 発生させるため積分する手段とを有する、請求項6乃至9のうちいずれか一項記 載の装置。 11. コンピュータに受信された疑似雑音信号を追跡させるコンピュータプロ グラムコードを記録したコンピュータが使用可能な記録媒体であって、上記コン ピュータプログラムコードは、 誤差信号に応じて、定刻の疑似雑音信号と、チップ間隔の半分未満だけ遅延し た定刻前の疑似雑音信号と、チップ間隔の半分未満だけ進んだ定刻後の疑似雑音 信号とを発生させるコードと、 上記誤差信号を発生させるため、受信された信号を上記定刻前の疑似雑音信号 及び上記定刻後の疑似雑音信号と相関演算させるコードとを有し、 これにより、上記定刻の疑似雑音信号が疑似雑音符号に追従するループが形成 される、コンピュータが使用可能な記録媒体。 12. 上記発生させるコードは上記定刻前の疑似雑音信号をチップ間隔の4分 の1だけ遅延させるコードを含む請求項11記載のコンピュータが使用可能な記 録媒体。 13. 上記発生させるコードは上記定刻後の疑似雑音信号をチップ間隔の4分 の1だけ遅延させるコードを含む請求項11又は12記載のコンピュータが使用 可能な記録媒体。 14. 上記相関演算させるコードは、 定刻前の信号を発生させるため、上記受信された信号を上記定刻前の疑似雑音 信号と相関演算させ、 定刻後の信号を発生させるため、上記受信された信号を上記定刻後の疑似雑音 信号と相関演算させ、 上記誤差信号を発生させるため、上記定刻前の信号を上記定刻後の信号から減 算させるコードを含む、請求項11乃至13のうちいずれか一項記載のコンピュ ータが使用可能な記録媒体。 15. 上記相関演算させるコードは、 合成された疑似雑音信号を発生させるため、上記定刻後の疑似雑音信号を上記 定刻前の疑似雑音信号から減算させ、 上記受信された信号を上記合成された疑似雑音信号と混合し、上記誤差信号を 発生させるため積分させるコードを含む、請求項11乃至14のうちいずれか一 項記載のコンピュータが使用可能な記録媒体。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/996,669 | 1997-12-23 | ||
US08/996,669 US6549559B2 (en) | 1997-12-23 | 1997-12-23 | Apparatus and method for locking onto a psuedo-noise code in an IS-95 spread spectrum communications system |
PCT/IB1998/001963 WO1999034528A2 (en) | 1997-12-23 | 1998-12-07 | Apparatus and method for locking onto a pseudo-noise code in an is-95 spread spectrum communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001513308A true JP2001513308A (ja) | 2001-08-28 |
JP4162725B2 JP4162725B2 (ja) | 2008-10-08 |
Family
ID=25543171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53468299A Expired - Fee Related JP4162725B2 (ja) | 1997-12-23 | 1998-12-07 | Is−95規格のスペクトラム拡散通信システムにおける疑似雑音符号の追跡装置及び方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6549559B2 (ja) |
EP (1) | EP0962062A2 (ja) |
JP (1) | JP4162725B2 (ja) |
KR (1) | KR100562765B1 (ja) |
CN (1) | CN1118953C (ja) |
WO (1) | WO1999034528A2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8532159B2 (en) | 2007-08-30 | 2013-09-10 | Toyota Jidosha Kabushiki Kaisha | Transmitter, receiver, wireless communication system, and communication method |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6396819B1 (en) | 1998-03-21 | 2002-05-28 | Richard D. Fleeter | Low-cost satellite communication system |
GB2352368A (en) * | 1999-07-19 | 2001-01-24 | Oak Technology Inc | Receiver circuit |
KR20010028099A (ko) * | 1999-09-17 | 2001-04-06 | 박종섭 | 코드 분할 다중 접속방식을 이용한 수신기에서의 동기 추적장치 및 그 방법 |
DE19953350A1 (de) * | 1999-11-05 | 2001-05-23 | Infineon Technologies Ag | Vorrichtung zur Feinsynchronisation von Codesignalen |
US6985512B1 (en) * | 2000-02-28 | 2006-01-10 | Aeroastro, Inc. | Asynchronous spread-spectrum communications |
US7433391B2 (en) * | 2000-02-28 | 2008-10-07 | Aeroastro, Inc. | Spread-spectrum receiver with fast M-sequence transform |
US7227884B2 (en) | 2000-02-28 | 2007-06-05 | Aeroastro, Inc. | Spread-spectrum receiver with progressive fourier transform |
US6901105B1 (en) * | 2000-08-28 | 2005-05-31 | Koninklijke Philips Electroncs N.V. | Tracking of a multi-path resolved signal in a rake receiver |
GB0021166D0 (en) * | 2000-08-30 | 2000-10-11 | Roke Manor Research | Communication system with adjustable control signal |
US7010073B2 (en) * | 2001-01-19 | 2006-03-07 | Qualcomm, Incorporated | Delay lock loops for wireless communication systems |
JP3462477B2 (ja) * | 2001-04-05 | 2003-11-05 | 松下電器産業株式会社 | 相関検出装置および相関検出方法 |
DE10143154A1 (de) * | 2001-09-03 | 2003-03-27 | Infineon Technologies Ag | Vorrichtung und Verfahren zur Feinsynchronisation bei der Abtastung von spreizkodierten Empfangssignalen |
US20030053578A1 (en) * | 2001-09-18 | 2003-03-20 | Sun Microsystems, Inc. | Synchronous receiver |
US6456648B1 (en) * | 2001-10-01 | 2002-09-24 | Interdigital Technology Corporation | Code tracking loop with automatic power normalization |
US7272167B2 (en) * | 2002-02-06 | 2007-09-18 | Neoreach, Inc. | PN code chip time tracking with smart antenna |
US7372892B2 (en) | 2002-04-29 | 2008-05-13 | Interdigital Technology Corporation | Simple and robust digital code tracking loop for wireless communication systems |
DE10251322B4 (de) * | 2002-11-04 | 2006-10-26 | Advanced Micro Devices, Inc., Sunnyvale | Early-Late-Korrelation zur Timingfehlerkorrektur in Datenkommunikationsempfängern |
US7346094B2 (en) * | 2002-12-13 | 2008-03-18 | International Business Machines Corporation | System and method for transmitting data and additional information simultaneously within a wire based communication system |
US7197086B2 (en) * | 2003-05-29 | 2007-03-27 | Lucent Technologies Inc. | Wide-bandwidth, high-dynamic-range linear amplifier for a CDMA transmitter in a wireless base station |
BR0302553A (pt) * | 2003-07-01 | 2005-03-29 | Intelbras S A Ind De Telecomun | Equipamento telefônico sem fio com espalhamento espectral em voz amostrada |
AU2003287508A1 (en) * | 2003-11-04 | 2005-06-06 | Thomson Licensing | Intelligent code tracking for spread spectrum systems |
KR100823129B1 (ko) * | 2004-08-18 | 2008-04-21 | 삼성전자주식회사 | 이동통신 시스템의 트랙킹 장치 및 방법 |
CN105429731B (zh) | 2005-10-28 | 2019-07-12 | 莫伊克斯公司 | 用于从rfid标签后向散射的符号序列中检测数据序列的系统和方法 |
US8552835B2 (en) * | 2005-10-28 | 2013-10-08 | Mojix, Inc. | RFID system with low complexity implementation and pallet coding error correction |
US7592953B2 (en) * | 2005-12-30 | 2009-09-22 | Comtech Mobile Datacom Corporation | Mobile satellite communications |
US8275080B2 (en) * | 2006-11-17 | 2012-09-25 | Comtech Mobile Datacom Corporation | Self-supporting simplex packets |
US8170087B2 (en) * | 2007-05-10 | 2012-05-01 | Texas Instruments Incorporated | Correlation coprocessor |
KR101369360B1 (ko) | 2007-09-05 | 2014-03-04 | 삼성전자주식회사 | Ofdm 수신기의 cfo 동기화 방법 및 장치 |
US8520659B2 (en) * | 2007-12-18 | 2013-08-27 | Airvana Llc | Absolute time recovery |
US8379625B2 (en) | 2007-12-18 | 2013-02-19 | Airvana Llc | Obtaining time information in a cellular network |
US8284749B2 (en) * | 2008-03-10 | 2012-10-09 | Comtech Mobile Datacom Corporation | Time slot synchronized, flexible bandwidth communication system |
US8072311B2 (en) | 2008-04-14 | 2011-12-06 | Mojix, Inc. | Radio frequency identification tag location estimation and tracking system and method |
US9106364B1 (en) | 2009-01-26 | 2015-08-11 | Comtech Mobile Datacom Corporation | Signal processing of a high capacity waveform |
US8548107B1 (en) | 2009-01-26 | 2013-10-01 | Comtech Mobile Datacom Corporation | Advanced multi-user detector |
US8675711B1 (en) | 2009-09-25 | 2014-03-18 | Comtech Mobile Datacom Corporation | System and methods for dynamic spread spectrum usage |
US9602316B2 (en) | 2011-03-07 | 2017-03-21 | Mojix, Inc. | Multiple symbol noncoherent soft output detector |
US9008239B2 (en) | 2011-03-07 | 2015-04-14 | Mojix, Inc. | Collision detection using a multiple symbol noncoherent soft output detector |
US9244117B2 (en) * | 2013-03-15 | 2016-01-26 | Livewire Innovation, Inc. | Systems and methods for implementing S/SSTDR measurements |
CN103601059B (zh) * | 2013-11-15 | 2016-09-07 | 深圳职业技术学院 | 爬梯机保护装置及爬梯机 |
CN104393892B (zh) * | 2014-11-20 | 2016-11-30 | 福建省物联网科学研究院 | 一种新型扩频微波接收机数字化伪码同步的方法 |
US9883337B2 (en) | 2015-04-24 | 2018-01-30 | Mijix, Inc. | Location based services for RFID and sensor networks |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5390207A (en) * | 1990-11-28 | 1995-02-14 | Novatel Communications Ltd. | Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators |
US5199050A (en) * | 1991-04-05 | 1993-03-30 | Trw Inc. | Pseudorandom (PN) signal synchronization circuit and related method |
KR950007434B1 (ko) * | 1991-11-28 | 1995-07-10 | 삼성전자주식회사 | 디지탈 얼리-레이트 트래킹 루프회로 |
US5347536A (en) * | 1993-03-17 | 1994-09-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Multipath noise reduction for spread spectrum signals |
KR970005598B1 (ko) * | 1994-06-29 | 1997-04-18 | 삼성전자 주식회사 | 대역확산통신방식의 비동기 디지탈 수신장치 |
US6023489A (en) * | 1995-05-24 | 2000-02-08 | Leica Geosystems Inc. | Method and apparatus for code synchronization in a global positioning system receiver |
US5640416A (en) * | 1995-06-07 | 1997-06-17 | Comsat Corporation | Digital downconverter/despreader for direct sequence spread spectrum communications system |
US5953367A (en) * | 1995-08-09 | 1999-09-14 | Magellan Corporation | Spread spectrum receiver using a pseudo-random noise code for ranging applications in a way that reduces errors when a multipath signal is present |
KR970078064A (ko) | 1996-05-31 | 1997-12-12 | 배순훈 | 디지탈 디엘엘용 의사 잡음 발생 제어 장치 |
US5966403A (en) * | 1996-07-19 | 1999-10-12 | Trimble Navigation Limited | Code multipath error estimation using weighted correlations |
US5852630A (en) * | 1997-07-17 | 1998-12-22 | Globespan Semiconductor, Inc. | Method and apparatus for a RADSL transceiver warm start activation procedure with precoding |
-
1997
- 1997-12-23 US US08/996,669 patent/US6549559B2/en not_active Expired - Fee Related
-
1998
- 1998-12-07 CN CN98804528A patent/CN1118953C/zh not_active Expired - Fee Related
- 1998-12-07 JP JP53468299A patent/JP4162725B2/ja not_active Expired - Fee Related
- 1998-12-07 WO PCT/IB1998/001963 patent/WO1999034528A2/en not_active Application Discontinuation
- 1998-12-07 EP EP98955855A patent/EP0962062A2/en not_active Withdrawn
- 1998-12-07 KR KR1019997007581A patent/KR100562765B1/ko not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8532159B2 (en) | 2007-08-30 | 2013-09-10 | Toyota Jidosha Kabushiki Kaisha | Transmitter, receiver, wireless communication system, and communication method |
Also Published As
Publication number | Publication date |
---|---|
US20020057729A1 (en) | 2002-05-16 |
WO1999034528A3 (en) | 1999-09-16 |
EP0962062A2 (en) | 1999-12-08 |
KR20000075522A (ko) | 2000-12-15 |
US6549559B2 (en) | 2003-04-15 |
CN1253676A (zh) | 2000-05-17 |
JP4162725B2 (ja) | 2008-10-08 |
KR100562765B1 (ko) | 2006-03-20 |
CN1118953C (zh) | 2003-08-20 |
WO1999034528A2 (en) | 1999-07-08 |
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