IL61986A - Diversity radio transmission system - Google Patents
Diversity radio transmission systemInfo
- Publication number
- IL61986A IL61986A IL61986A IL6198681A IL61986A IL 61986 A IL61986 A IL 61986A IL 61986 A IL61986 A IL 61986A IL 6198681 A IL6198681 A IL 6198681A IL 61986 A IL61986 A IL 61986A
- Authority
- IL
- Israel
- Prior art keywords
- carriers
- frequency
- separate
- transmission system
- radio transmission
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/12—Frequency diversity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Transmission System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8001898A FR2474791A1 (fr) | 1980-01-29 | 1980-01-29 | Systeme de transmission radioelectrique en diversite, de structure simple et economique, et reseau de telecommunication comportant de tels systemes |
Publications (2)
Publication Number | Publication Date |
---|---|
IL61986A0 IL61986A0 (en) | 1981-02-27 |
IL61986A true IL61986A (en) | 1983-09-30 |
Family
ID=9237996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL61986A IL61986A (en) | 1980-01-29 | 1981-01-26 | Diversity radio transmission system |
Country Status (10)
Country | Link |
---|---|
US (1) | US4363132A (xx) |
EP (1) | EP0033256B1 (xx) |
JP (1) | JPS56114451A (xx) |
AU (1) | AU533920B2 (xx) |
CA (1) | CA1165819A (xx) |
DE (1) | DE3166382D1 (xx) |
FR (1) | FR2474791A1 (xx) |
IL (1) | IL61986A (xx) |
IN (1) | IN155303B (xx) |
NO (1) | NO154616C (xx) |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3121146A1 (de) * | 1981-05-27 | 1983-01-05 | Siemens AG, 1000 Berlin und 8000 München | Digitales funksystem |
FR2537805B1 (fr) * | 1982-12-14 | 1986-01-24 | Thomson Csf | Dispositif de linearisation automatique de la caracteristique frequence-signal de commande, d'un oscillateur a frequence variable module en frequence |
US6433668B1 (en) * | 1990-05-25 | 2002-08-13 | Seiko Instruments Inc. | Paging system with spacial, frequency and time diversity |
US5214787A (en) * | 1990-08-31 | 1993-05-25 | Karkota Jr Frank P | Multiple audio channel broadcast system |
DE69432844T2 (de) * | 1993-04-29 | 2004-05-19 | Ericsson Inc. | Zeitdiversityübertragungssystem zum Herabsetzung der Nachbarkanalstörung in Mobiltelefonsystemen |
US6061551A (en) | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for down-converting electromagnetic signals |
US6694128B1 (en) | 1998-08-18 | 2004-02-17 | Parkervision, Inc. | Frequency synthesizer using universal frequency translation technology |
US7515896B1 (en) | 1998-10-21 | 2009-04-07 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships |
US6091940A (en) | 1998-10-21 | 2000-07-18 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6813485B2 (en) | 1998-10-21 | 2004-11-02 | Parkervision, Inc. | Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same |
US6560301B1 (en) | 1998-10-21 | 2003-05-06 | Parkervision, Inc. | Integrated frequency translation and selectivity with a variety of filter embodiments |
US6061555A (en) * | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for ensuring reception of a communications signal |
US7236754B2 (en) | 1999-08-23 | 2007-06-26 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6049706A (en) | 1998-10-21 | 2000-04-11 | Parkervision, Inc. | Integrated frequency translation and selectivity |
US6370371B1 (en) | 1998-10-21 | 2002-04-09 | Parkervision, Inc. | Applications of universal frequency translation |
US7295826B1 (en) | 1998-10-21 | 2007-11-13 | Parkervision, Inc. | Integrated frequency translation and selectivity with gain control functionality, and applications thereof |
AU1206400A (en) * | 1998-10-21 | 2000-05-08 | Parkervision, Inc. | Method and system for ensuring reception of a communications signal |
US7027786B1 (en) | 1998-10-21 | 2006-04-11 | Parkervision, Inc. | Carrier and clock recovery using universal frequency translation |
US7039372B1 (en) | 1998-10-21 | 2006-05-02 | Parkervision, Inc. | Method and system for frequency up-conversion with modulation embodiments |
US6542722B1 (en) | 1998-10-21 | 2003-04-01 | Parkervision, Inc. | Method and system for frequency up-conversion with variety of transmitter configurations |
DE19855292C1 (de) * | 1998-11-24 | 2000-10-05 | Jens Kurrat | Digitales Funkkopfhöhrersystem |
US7006805B1 (en) | 1999-01-22 | 2006-02-28 | Parker Vision, Inc. | Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service |
US6704549B1 (en) | 1999-03-03 | 2004-03-09 | Parkvision, Inc. | Multi-mode, multi-band communication system |
US6704558B1 (en) | 1999-01-22 | 2004-03-09 | Parkervision, Inc. | Image-reject down-converter and embodiments thereof, such as the family radio service |
US6873836B1 (en) | 1999-03-03 | 2005-03-29 | Parkervision, Inc. | Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology |
US6853690B1 (en) | 1999-04-16 | 2005-02-08 | Parkervision, Inc. | Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments |
US6879817B1 (en) | 1999-04-16 | 2005-04-12 | Parkervision, Inc. | DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
US7110435B1 (en) | 1999-03-15 | 2006-09-19 | Parkervision, Inc. | Spread spectrum applications of universal frequency translation |
US6504878B1 (en) * | 1999-04-15 | 2003-01-07 | Harris Corporation | Digitally modulated RF amplifier system having improved adjacent sideband distortion reduction |
US7693230B2 (en) | 1999-04-16 | 2010-04-06 | Parkervision, Inc. | Apparatus and method of differential IQ frequency up-conversion |
US7110444B1 (en) | 1999-08-04 | 2006-09-19 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations |
US7065162B1 (en) | 1999-04-16 | 2006-06-20 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same |
US8295406B1 (en) | 1999-08-04 | 2012-10-23 | Parkervision, Inc. | Universal platform module for a plurality of communication protocols |
US7054296B1 (en) | 1999-08-04 | 2006-05-30 | Parkervision, Inc. | Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation |
US7072390B1 (en) | 1999-08-04 | 2006-07-04 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments |
US7082171B1 (en) | 1999-11-24 | 2006-07-25 | Parkervision, Inc. | Phase shifting applications of universal frequency translation |
US6963734B2 (en) | 1999-12-22 | 2005-11-08 | Parkervision, Inc. | Differential frequency down-conversion using techniques of universal frequency translation technology |
US7292835B2 (en) | 2000-01-28 | 2007-11-06 | Parkervision, Inc. | Wireless and wired cable modem applications of universal frequency translation technology |
US7010286B2 (en) | 2000-04-14 | 2006-03-07 | Parkervision, Inc. | Apparatus, system, and method for down-converting and up-converting electromagnetic signals |
US7454453B2 (en) | 2000-11-14 | 2008-11-18 | Parkervision, Inc. | Methods, systems, and computer program products for parallel correlation and applications thereof |
US7010559B2 (en) | 2000-11-14 | 2006-03-07 | Parkervision, Inc. | Method and apparatus for a parallel correlator and applications thereof |
US7072427B2 (en) | 2001-11-09 | 2006-07-04 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
US7085335B2 (en) | 2001-11-09 | 2006-08-01 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
US6975848B2 (en) | 2002-06-04 | 2005-12-13 | Parkervision, Inc. | Method and apparatus for DC offset removal in a radio frequency communication channel |
US7321640B2 (en) | 2002-06-07 | 2008-01-22 | Parkervision, Inc. | Active polyphase inverter filter for quadrature signal generation |
US7379883B2 (en) | 2002-07-18 | 2008-05-27 | Parkervision, Inc. | Networking methods and systems |
US7460584B2 (en) | 2002-07-18 | 2008-12-02 | Parkervision, Inc. | Networking methods and systems |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR940009A (fr) * | 1947-01-04 | 1948-12-01 | Radio Electr Soc Fr | Perfectionnements aux réseaux radioélectriques |
US3023309A (en) * | 1960-12-19 | 1962-02-27 | Bell Telephone Labor Inc | Communication system |
US3258694A (en) * | 1964-01-03 | 1966-06-28 | Multi-channel p.m. transmitter with automatic modulation index control | |
US3689841A (en) * | 1970-10-23 | 1972-09-05 | Signatron | Communication system for eliminating time delay effects when used in a multipath transmission medium |
US3980945A (en) * | 1974-10-07 | 1976-09-14 | Raytheon Company | Digital communications system with immunity to frequency selective fading |
JPS52141113A (en) * | 1976-05-19 | 1977-11-25 | Nippon Telegr & Teleph Corp <Ntt> | Transmission diversity system |
-
1980
- 1980-01-29 FR FR8001898A patent/FR2474791A1/fr active Granted
-
1981
- 1981-01-09 DE DE8181400030T patent/DE3166382D1/de not_active Expired
- 1981-01-09 EP EP81400030A patent/EP0033256B1/fr not_active Expired
- 1981-01-20 IN IN28/DEL/81A patent/IN155303B/en unknown
- 1981-01-26 IL IL61986A patent/IL61986A/xx not_active IP Right Cessation
- 1981-01-27 US US06/228,724 patent/US4363132A/en not_active Expired - Lifetime
- 1981-01-27 JP JP976381A patent/JPS56114451A/ja active Granted
- 1981-01-27 CA CA000369415A patent/CA1165819A/en not_active Expired
- 1981-01-28 AU AU66654/81A patent/AU533920B2/en not_active Ceased
- 1981-01-28 NO NO810298A patent/NO154616C/no unknown
Also Published As
Publication number | Publication date |
---|---|
NO154616C (no) | 1986-11-12 |
AU533920B2 (en) | 1983-12-15 |
FR2474791A1 (fr) | 1981-07-31 |
CA1165819A (en) | 1984-04-17 |
EP0033256B1 (fr) | 1984-10-03 |
JPS6242537B2 (xx) | 1987-09-09 |
IL61986A0 (en) | 1981-02-27 |
IN155303B (xx) | 1985-01-19 |
FR2474791B1 (xx) | 1982-11-26 |
US4363132A (en) | 1982-12-07 |
NO154616B (no) | 1986-08-04 |
AU6665481A (en) | 1981-08-06 |
JPS56114451A (en) | 1981-09-09 |
NO810298L (no) | 1981-07-30 |
DE3166382D1 (en) | 1984-11-08 |
EP0033256A1 (fr) | 1981-08-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2474791B1 (xx) | ||
ES2118136T3 (es) | Sistema de comunicaciones por linea de distribucion de energia electrica para reducir los efectos de cancelacion de la señal. | |
ZA81878B (en) | Transmission systems for transmitting signals over power distribution networks,and transmitters for use therein | |
SE9800840L (sv) | Anordning och förfarande för åstadkommande av en fyrsignal i ett trådlöst kommunikationssystem | |
IT8320520A0 (it) | Trasmettitore adatto per la trsmissione di segnali modulati in frequenza. | |
DE3363313D1 (en) | Carrier frequency system for four-wire operation | |
JPS5269506A (en) | Secondary carrier wave piling pcm-im communication system | |
ES8306300A1 (es) | "una disposicion de circuito para recibir dos senales moduladoras, mas especificamente para television". | |
NO992043L (no) | FremgangsmÕte for kombinering av flere signaler, samt basestasjon | |
GB1291444A (en) | A frequency modulation communication system | |
JPS53107214A (en) | Radio transmission-reception system | |
JPS5372412A (en) | Signal transmission system | |
JPS52153139A (en) | Interior power line carrier system | |
JPS538509A (en) | Impedance matching system for data transmission circuit | |
JPS57125540A (en) | Reproducing repeater for satellite mounting | |
JPS6446352A (en) | Service signal transmitter in digital radio line | |
JPS545693A (en) | Information communication system | |
JPS52143709A (en) | Signal synthesizing circuit | |
JPS52136504A (en) | Information reception system for moving object | |
JPS56140783A (en) | Multiplex broadcast system | |
GB1064592A (en) | Method to localise faults in carrier frequency systems | |
JPS57107650A (en) | Communication equipment | |
JPS5287908A (en) | Pam transmission system | |
GB1511373A (en) | Telemetry system | |
IT1193479B (it) | N.metilcarbammati di 3,5-dimetil-4-cianoalchilammino fenoli aventi attivita' insetticida particolare contro i lepidotteri |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
KB | Patent renewed | ||
EXP | Patent expired |