MX9801612A - Circuito y metodo de deteccion de servicio. - Google Patents
Circuito y metodo de deteccion de servicio.Info
- Publication number
- MX9801612A MX9801612A MX9801612A MX9801612A MX9801612A MX 9801612 A MX9801612 A MX 9801612A MX 9801612 A MX9801612 A MX 9801612A MX 9801612 A MX9801612 A MX 9801612A MX 9801612 A MX9801612 A MX 9801612A
- Authority
- MX
- Mexico
- Prior art keywords
- energy
- detection circuit
- service
- autocorrelation
- cdma signal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Un radioteléfono (121) emplea un circuito de deteccion de servicio (125) que comprende al menos un detector de velocidad de chips (109) que mide la energía de la autocorrelacion de una señal de CDMA compuesta recibida y emplea un retardo diferente para cada medicion de la energía. Un circuito de deteccion de umbral (127) combina las energías medidas y determina que el servicio está disponible si las energías combinadas exceden el umbral y de lo contrario, determina que el servicio no está disponible. Los detectores de velocidades de chips (109) pueden conectarse en paralelo para proporcionar mediciones simultáneas de la energía de la autocorrelacion de la señal de CDMA compuesta recibida, o un solo detector de velocidad de chips (109) puede medir en serie la energía de la autocorrelacion de la señal de CDMA compuesta recibida.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/808,446 US5974042A (en) | 1997-02-28 | 1997-02-28 | Service detection circuit and method |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9801612A true MX9801612A (es) | 1998-11-30 |
Family
ID=25198779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9801612A MX9801612A (es) | 1997-02-28 | 1998-02-27 | Circuito y metodo de deteccion de servicio. |
Country Status (14)
Country | Link |
---|---|
US (1) | US5974042A (es) |
JP (1) | JP3031615B2 (es) |
KR (1) | KR100321457B1 (es) |
CN (1) | CN1117503C (es) |
AR (1) | AR011875A1 (es) |
BR (1) | BR9805111A (es) |
DE (1) | DE19806684C2 (es) |
FR (1) | FR2760303B1 (es) |
GB (1) | GB2323501B (es) |
HU (1) | HU220726B1 (es) |
MX (1) | MX9801612A (es) |
PL (1) | PL187735B1 (es) |
RU (1) | RU2212762C2 (es) |
ZA (1) | ZA9836B (es) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3202658B2 (ja) * | 1997-06-20 | 2001-08-27 | 日本電気株式会社 | 可変レートcdma送信電力制御方式 |
US6553010B1 (en) * | 1998-10-16 | 2003-04-22 | Telefonaktiebolaget L M Ericsson | Coverage detection and indication in multimedia radiocommunication system |
US6317411B1 (en) * | 1999-02-22 | 2001-11-13 | Motorola, Inc. | Method and system for transmitting and receiving signals transmitted from an antenna array with transmit diversity techniques |
JP3438701B2 (ja) | 2000-06-09 | 2003-08-18 | 日本電気株式会社 | Ds−cdmaシステムにおける受信パスタイミング検出回路 |
US6778838B1 (en) * | 2000-10-11 | 2004-08-17 | Ericsson Inc. | Phase null mitigation method |
JP3851525B2 (ja) * | 2001-08-09 | 2006-11-29 | 株式会社エヌ・ティ・ティ・ドコモ | 移動局装置、移動通信システムおよびキャリア検出方法 |
GB2396275B (en) * | 2002-12-09 | 2006-03-15 | Ipwireless Inc | Support of plural chip rates in a CDMA system |
US20070092045A1 (en) * | 2005-10-21 | 2007-04-26 | Wangmyong Woo | Systems, Methods, and Apparatuses for Fine-Sensing Modules |
US7710919B2 (en) * | 2005-10-21 | 2010-05-04 | Samsung Electro-Mechanics | Systems, methods, and apparatuses for spectrum-sensing cognitive radios |
US7668262B2 (en) * | 2005-10-21 | 2010-02-23 | Samsung Electro-Mechanics | Systems, methods, and apparatuses for coarse spectrum-sensing modules |
US7528751B2 (en) * | 2006-07-28 | 2009-05-05 | Samsung Electro-Mechanics | Systems, methods, and apparatuses for a long delay generation technique for spectrum-sensing of cognitive radios |
US7860197B2 (en) * | 2006-09-29 | 2010-12-28 | Samsung Electro-Mechanics | Spectrum-sensing algorithms and methods |
JP5239529B2 (ja) * | 2008-06-10 | 2013-07-17 | 富士通セミコンダクター株式会社 | 同期検出器及び通信機器 |
KR101565608B1 (ko) * | 2008-09-04 | 2015-11-03 | 코닌클리케 필립스 엔.브이. | 분산 스펙트럼 감지 |
US8055222B2 (en) * | 2008-12-16 | 2011-11-08 | Motorola Mobility, Inc. | Multiple protocol signal detector |
US9362979B2 (en) * | 2011-01-04 | 2016-06-07 | ABG Tag & Traq, LLC | Ultra wideband time-delayed correlator |
US8676147B1 (en) * | 2012-11-30 | 2014-03-18 | The Aerospace Corporation | Detection system, controller, and method of detecting a signal of interest |
CN105157899A (zh) * | 2015-08-19 | 2015-12-16 | 南京工程学院 | 互反向含噪拟方波最大绝对值的搜索方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5146471A (en) * | 1989-03-23 | 1992-09-08 | Echelon Systems Corporation | Correlator for spread spectrum communications systems |
US5063572A (en) * | 1990-06-04 | 1991-11-05 | Unisys Corporation | Channelized delay and mix chip rate detector |
US5157688A (en) * | 1991-03-14 | 1992-10-20 | Hughes Aircraft Company | Spread spectrum transmitter for degrading spread spectrum feature detectors |
US5341396A (en) * | 1993-03-02 | 1994-08-23 | The Boeing Company | Multi-rate spread system |
FR2710214B1 (fr) * | 1993-09-15 | 1995-10-20 | Alcatel Mobile Comm France | Détecteur à seuil pour système de transmission radionumérique, dispositifs comprenant un tel détecteur à seuil et utilisation correspondante. |
CA2151737C (en) * | 1993-10-14 | 1999-09-28 | Tomohiro Dohi | Correlation detector and communication apparatus |
US5680414A (en) * | 1994-09-09 | 1997-10-21 | Omnipoint Corporation | Synchronization apparatus and method for spread spectrum receiver |
FR2733113B1 (fr) * | 1995-04-14 | 1997-06-13 | Europ Agence Spatiale | Recepteur de signal a spectre etale |
US5978679A (en) * | 1996-02-23 | 1999-11-02 | Qualcomm Inc. | Coexisting GSM and CDMA wireless telecommunications networks |
US5950131A (en) * | 1996-10-29 | 1999-09-07 | Motorola, Inc. | Method and apparatus for fast pilot channel acquisition using a matched filter in a CDMA radiotelephone |
-
1997
- 1997-02-28 US US08/808,446 patent/US5974042A/en not_active Expired - Lifetime
-
1998
- 1998-01-05 ZA ZA9836A patent/ZA9836B/xx unknown
- 1998-01-12 FR FR9800203A patent/FR2760303B1/fr not_active Expired - Fee Related
- 1998-01-15 KR KR1019980000994A patent/KR100321457B1/ko not_active IP Right Cessation
- 1998-01-20 GB GB9801291A patent/GB2323501B/en not_active Expired - Fee Related
- 1998-02-16 JP JP10050066A patent/JP3031615B2/ja not_active Expired - Fee Related
- 1998-02-18 DE DE19806684A patent/DE19806684C2/de not_active Expired - Fee Related
- 1998-02-25 AR ARP980100848A patent/AR011875A1/es active IP Right Grant
- 1998-02-26 BR BR9805111-3A patent/BR9805111A/pt not_active IP Right Cessation
- 1998-02-27 HU HU9800431A patent/HU220726B1/hu not_active IP Right Cessation
- 1998-02-27 CN CN98100469A patent/CN1117503C/zh not_active Expired - Fee Related
- 1998-02-27 MX MX9801612A patent/MX9801612A/es unknown
- 1998-02-27 PL PL98325086A patent/PL187735B1/pl not_active IP Right Cessation
- 1998-03-02 RU RU98104704/09A patent/RU2212762C2/ru not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
HUP9800431A2 (hu) | 1998-10-28 |
FR2760303A1 (fr) | 1998-09-04 |
PL325086A1 (en) | 1998-08-31 |
GB9801291D0 (en) | 1998-03-18 |
ZA9836B (en) | 1998-07-07 |
CN1117503C (zh) | 2003-08-06 |
PL187735B1 (pl) | 2004-09-30 |
FR2760303B1 (fr) | 2003-04-18 |
HUP9800431A3 (en) | 2000-02-28 |
DE19806684C2 (de) | 2002-05-23 |
BR9805111A (pt) | 1999-12-14 |
HU220726B1 (hu) | 2002-05-28 |
KR19980070532A (ko) | 1998-10-26 |
KR100321457B1 (ko) | 2002-03-08 |
JP3031615B2 (ja) | 2000-04-10 |
AR011875A1 (es) | 2000-09-13 |
CN1213260A (zh) | 1999-04-07 |
US5974042A (en) | 1999-10-26 |
DE19806684A1 (de) | 1998-09-10 |
JPH10256942A (ja) | 1998-09-25 |
GB2323501A (en) | 1998-09-23 |
RU2212762C2 (ru) | 2003-09-20 |
GB2323501B (en) | 2001-08-22 |
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