KR970009301B1 - Spread spectrum communication system - Google Patents
Spread spectrum communication system Download PDFInfo
- Publication number
- KR970009301B1 KR970009301B1 KR94015592A KR19940015592A KR970009301B1 KR 970009301 B1 KR970009301 B1 KR 970009301B1 KR 94015592 A KR94015592 A KR 94015592A KR 19940015592 A KR19940015592 A KR 19940015592A KR 970009301 B1 KR970009301 B1 KR 970009301B1
- Authority
- KR
- South Korea
- Prior art keywords
- communication system
- spectrum communication
- spread spectrum
- code output
- output means
- Prior art date
Links
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
- H04J13/16—Code allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16074193 | 1993-06-30 | ||
JP93-160741 | 1993-06-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950002282A KR950002282A (ko) | 1995-01-04 |
KR970009301B1 true KR970009301B1 (en) | 1997-06-10 |
Family
ID=15721458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR94015592A KR970009301B1 (en) | 1993-06-30 | 1994-06-30 | Spread spectrum communication system |
Country Status (5)
Country | Link |
---|---|
US (1) | US5546424A (ko) |
EP (1) | EP0632611B1 (ko) |
KR (1) | KR970009301B1 (ko) |
CN (1) | CN1074620C (ko) |
DE (1) | DE69428836T2 (ko) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5790588A (en) * | 1995-06-07 | 1998-08-04 | Ntt Mobile Communications Network, Inc. | Spread spectrum transmitter and receiver employing composite spreading codes |
US7929498B2 (en) * | 1995-06-30 | 2011-04-19 | Interdigital Technology Corporation | Adaptive forward power control and adaptive reverse power control for spread-spectrum communications |
US6885652B1 (en) | 1995-06-30 | 2005-04-26 | Interdigital Technology Corporation | Code division multiple access (CDMA) communication system |
US7020111B2 (en) | 1996-06-27 | 2006-03-28 | Interdigital Technology Corporation | System for using rapid acquisition spreading codes for spread-spectrum communications |
ZA965340B (en) | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
US5862173A (en) * | 1995-12-11 | 1999-01-19 | Ericsson Inc. | Re-orthogonalization of wideband CDMA signals |
US6061388A (en) * | 1996-06-07 | 2000-05-09 | General Electric Company | Spread spectrum communication system with frequency-separated message and reference signals |
JP2800797B2 (ja) * | 1996-08-12 | 1998-09-21 | 日本電気株式会社 | スペクトル拡散通信方式 |
JP3671992B2 (ja) * | 1996-10-28 | 2005-07-13 | ソニー株式会社 | 映像信号受信装置および映像信号受信方法 |
US6088659A (en) * | 1997-09-11 | 2000-07-11 | Abb Power T&D Company Inc. | Automated meter reading system |
US20020051434A1 (en) * | 1997-10-23 | 2002-05-02 | Ozluturk Fatih M. | Method for using rapid acquisition spreading codes for spread-spectrum communications |
JP3333454B2 (ja) | 1997-12-20 | 2002-10-15 | 松下電器産業株式会社 | 相関検出装置及び相関検出装置の逆拡散符号切換え方法 |
US6408019B1 (en) | 1997-12-29 | 2002-06-18 | Georgia Tech Research Corporation | System and method for communication using noise |
FI105741B (fi) * | 1998-02-12 | 2000-09-29 | Nokia Networks Oy | Tiedonsiirtomenetelmä ja radiojärjestelmä |
GB2340700B (en) * | 1998-08-13 | 2000-07-12 | Ramar Technology Ltd | A technique to extend the jamming margin of a DSSS communication system |
US6700902B1 (en) | 1998-10-19 | 2004-03-02 | Elster Electricity, Llc | Method and system for improving wireless data packet delivery |
GB2352944B (en) | 1999-05-31 | 2004-02-11 | Korea Electronics Telecomm | Apparatus and method for moduating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication sytem |
US6801495B1 (en) * | 2000-02-28 | 2004-10-05 | Nortel Networks Limited | High capacity robust modem for multiple classes of services |
JP2001358613A (ja) * | 2000-06-14 | 2001-12-26 | Fujitsu Ltd | Cdma受信装置 |
JP3438703B2 (ja) * | 2000-06-28 | 2003-08-18 | 日本電気株式会社 | スペクトラム拡散通信装置及びその通信方法 |
US20030021271A1 (en) * | 2001-04-03 | 2003-01-30 | Leimer Donald K. | Hybrid wireless communication system |
CA2356077A1 (en) * | 2001-08-28 | 2003-02-28 | Sirific Wireless Corporation | Improved apparatus and method for down conversion |
US7126378B2 (en) | 2003-12-17 | 2006-10-24 | Rambus, Inc. | High speed signaling system with adaptive transmit pre-emphasis |
US7397848B2 (en) | 2003-04-09 | 2008-07-08 | Rambus Inc. | Partial response receiver |
US7092472B2 (en) | 2003-09-16 | 2006-08-15 | Rambus Inc. | Data-level clock recovery |
US7092426B2 (en) * | 2003-09-24 | 2006-08-15 | S5 Wireless, Inc. | Matched filter for scalable spread spectrum communications systems |
US7236510B2 (en) * | 2003-10-01 | 2007-06-26 | S5 Wireless, Inc. | Equalizer with decision feedback frequency tracking and bit decoding for spread spectrum communications |
US7233164B2 (en) * | 2003-12-17 | 2007-06-19 | Rambus Inc. | Offset cancellation in a multi-level signaling system |
US7742430B2 (en) | 2004-09-24 | 2010-06-22 | Elster Electricity, Llc | System for automated management of spontaneous node migration in a distributed fixed wireless network |
US7702594B2 (en) | 2004-09-24 | 2010-04-20 | Elster Electricity, Llc | System and method for automated configuration of meters |
US7991040B2 (en) * | 2006-04-04 | 2011-08-02 | Qualcomm Incorporated | Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal |
US8073384B2 (en) | 2006-12-14 | 2011-12-06 | Elster Electricity, Llc | Optimization of redundancy and throughput in an automated meter data collection system using a wireless network |
US8320302B2 (en) | 2007-04-20 | 2012-11-27 | Elster Electricity, Llc | Over the air microcontroller flash memory updates |
US9612132B2 (en) | 2007-12-26 | 2017-04-04 | Elster Solutions, Llc | Optimized data collection in a wireless fixed network metering system |
US8525692B2 (en) | 2008-06-13 | 2013-09-03 | Elster Solutions, Llc | Techniques for limiting demand from an electricity meter with an installed relay |
US8325783B2 (en) * | 2008-09-23 | 2012-12-04 | Sprint Communications Company L.P. | Spreading code optimization based on quality factors |
US8203463B2 (en) | 2009-02-13 | 2012-06-19 | Elster Electricity Llc | Wakeup and interrogation of meter-reading devices using licensed narrowband and unlicensed wideband radio communication |
CN102879644A (zh) * | 2012-11-01 | 2013-01-16 | 南京国睿安泰信科技股份有限公司 | 利用模拟带宽预切换实现频谱仪分辨率带宽的系统 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3808536A (en) * | 1972-04-12 | 1974-04-30 | Gen Electric Co Ltd | Communication scrambler system |
US4308617A (en) * | 1977-11-07 | 1981-12-29 | The Bendix Corporation | Noiselike amplitude and phase modulation coding for spread spectrum transmissions |
US4392220A (en) * | 1980-05-30 | 1983-07-05 | Nippon Electric Co., Ltd. | Modem to be coupled to a directional transmission line of an SS multiplex communication network |
US4494238A (en) * | 1982-06-30 | 1985-01-15 | Motorola, Inc. | Multiple channel data link system |
US4475214A (en) * | 1982-10-12 | 1984-10-02 | The United States Of America As Represented By The Secretary Of The Army | CW Interference cancelling sytem for spread spectrum signals utilizing active coherent detection |
US4475215A (en) * | 1982-10-15 | 1984-10-02 | The United States Of America As Represented By The Secretary Of The Army | Pulse interference cancelling system for spread spectrum signals utilizing active coherent detection |
US4470138A (en) * | 1982-11-04 | 1984-09-04 | The United States Of America As Represented By The Secretary Of The Army | Non-orthogonal mobile subscriber multiple access system |
GB8516581D0 (en) * | 1985-07-01 | 1985-08-07 | Secr Defence | Serial data highway system |
KR870004587A (ko) * | 1985-10-16 | 1987-05-11 | 엘리 와이스 | 무선 근거리 통신 장치 |
US4759034A (en) * | 1986-12-02 | 1988-07-19 | General Research Of Electronics, Inc. | Multi-step spread spectrum communication apparatus |
JPH0332241A (ja) * | 1989-06-29 | 1991-02-12 | Mitsubishi Electric Corp | スペクトラム拡散通信方式 |
US5291515A (en) * | 1990-06-14 | 1994-03-01 | Clarion Co., Ltd. | Spread spectrum communication device |
US5103459B1 (en) * | 1990-06-25 | 1999-07-06 | Qualcomm Inc | System and method for generating signal waveforms in a cdma cellular telephone system |
US5093840A (en) * | 1990-11-16 | 1992-03-03 | Scs Mobilecom, Inc. | Adaptive power control for a spread spectrum transmitter |
US5218619A (en) * | 1990-12-17 | 1993-06-08 | Ericsson Ge Mobile Communications Holding, Inc. | CDMA subtractive demodulation |
-
1994
- 1994-06-27 US US08/266,235 patent/US5546424A/en not_active Expired - Lifetime
- 1994-06-29 EP EP94110136A patent/EP0632611B1/en not_active Expired - Lifetime
- 1994-06-29 DE DE69428836T patent/DE69428836T2/de not_active Expired - Lifetime
- 1994-06-30 KR KR94015592A patent/KR970009301B1/ko not_active IP Right Cessation
- 1994-06-30 CN CN94107803A patent/CN1074620C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69428836T2 (de) | 2002-04-11 |
EP0632611A2 (en) | 1995-01-04 |
EP0632611B1 (en) | 2001-10-31 |
KR950002282A (ko) | 1995-01-04 |
CN1074620C (zh) | 2001-11-07 |
CN1104394A (zh) | 1995-06-28 |
US5546424A (en) | 1996-08-13 |
EP0632611A3 (en) | 1995-11-02 |
DE69428836D1 (de) | 2001-12-06 |
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