DE2722570C3 - - Google Patents

Info

Publication number
DE2722570C3
DE2722570C3 DE19772722570 DE2722570A DE2722570C3 DE 2722570 C3 DE2722570 C3 DE 2722570C3 DE 19772722570 DE19772722570 DE 19772722570 DE 2722570 A DE2722570 A DE 2722570A DE 2722570 C3 DE2722570 C3 DE 2722570C3
Authority
DE
Germany
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.)
Expired
Application number
DE19772722570
Other versions
DE2722570A1 (de
DE2722570B2 (de
Inventor
Fumiyuki Yokohama Kanagawa Jp Adachi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Corp
Original Assignee
NTT Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to JP5767876A priority Critical patent/JPS52141113A/ja
Application filed by NTT Corp filed Critical NTT Corp
Publication of DE2722570A1 publication Critical patent/DE2722570A1/de
Publication of DE2722570B2 publication Critical patent/DE2722570B2/de
Application granted granted Critical
Publication of DE2722570C3 publication Critical patent/DE2722570C3/de
Application status is Expired legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/02Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/04Arrangements for detecting or preventing errors in the information received by diversity reception using frequency diversity
DE19772722570 1976-05-19 1977-05-18 Expired DE2722570C3 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5767876A JPS52141113A (en) 1976-05-19 1976-05-19 Transmission diversity system

Publications (3)

Publication Number Publication Date
DE2722570A1 DE2722570A1 (de) 1977-11-24
DE2722570B2 DE2722570B2 (de) 1981-01-15
DE2722570C3 true DE2722570C3 (de) 1981-10-08

Family

ID=13062576

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772722570 Expired DE2722570C3 (de) 1976-05-19 1977-05-18

Country Status (7)

Country Link
US (1) US4142155A (de)
JP (1) JPS52141113A (de)
CA (1) CA1088630A (de)
DE (1) DE2722570C3 (de)
FR (1) FR2352451B1 (de)
GB (1) GB1580744A (de)
SE (1) SE428623B (de)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2023971B (en) * 1978-05-10 1982-04-21 Nippon Telegraph & Telephone Digital signal transmission system
FR2464601B1 (fr) * 1979-08-29 1986-10-24 Trt Telecom Radio Electr Systeme de radiodiffusion numerique de plusieurs signaux d'information par un reseau d'emetteurs utilisant sensiblement la meme frequence porteuse
FR2474791B1 (de) * 1980-01-29 1982-11-26 Thomson Csf
US5285478A (en) * 1991-10-31 1994-02-08 Massachusetts Institute Of Technology Communication system utilizing self-similar signals
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US7236754B2 (en) * 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US7321735B1 (en) 1998-10-21 2008-01-22 Parkervision, Inc. Optical down-converter using universal frequency translation technology
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
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
US6061551A (en) * 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
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
US7295826B1 (en) 1998-10-21 2007-11-13 Parkervision, Inc. Integrated frequency translation and selectivity with gain control functionality, and applications thereof
US6091940A (en) * 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US6560301B1 (en) * 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
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
US6061555A (en) * 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
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
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
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter 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
US7110435B1 (en) 1999-03-15 2006-09-19 Parkervision, Inc. Spread spectrum applications of universal frequency translation
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6963734B2 (en) 1999-12-22 2005-11-08 Parkervision, Inc. Differential frequency down-conversion using techniques of universal frequency translation technology
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
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
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
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
US7072390B1 (en) 1999-08-04 2006-07-04 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments
US7054296B1 (en) 1999-08-04 2006-05-30 Parkervision, Inc. Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation
US7082171B1 (en) 1999-11-24 2006-07-25 Parkervision, Inc. Phase shifting applications of universal frequency translation
US7554508B2 (en) 2000-06-09 2009-06-30 Parker Vision, Inc. Phased array antenna applications on universal frequency translation
US7292835B2 (en) * 2000-01-28 2007-11-06 Parkervision, Inc. Wireless and wired cable modem applications of universal frequency translation technology
US7010559B2 (en) 2000-11-14 2006-03-07 Parkervision, Inc. Method and apparatus for a parallel correlator and applications thereof
US7454453B2 (en) * 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7085335B2 (en) 2001-11-09 2006-08-01 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7072427B2 (en) * 2001-11-09 2006-07-04 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
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7379883B2 (en) * 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
TWI280690B (en) * 2003-03-18 2007-05-01 Tdk Corp Electronic device for wireless communications and reflector device for wireless communication cards
US8572910B2 (en) * 2003-05-09 2013-11-05 Tapco International, Inc. Cap-on-cap mounting block
EP1720265A1 (de) 2005-05-04 2006-11-08 Siemens Aktiengesellschaft Diversitätssystem mit einer einzigen Empfangsantenne

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR957647A (de) * 1943-11-09 1950-02-23
US3348150A (en) * 1964-07-27 1967-10-17 Bell Telephone Labor Inc Diversity transmission system
US3713040A (en) * 1971-12-23 1973-01-23 Hewlett Packard Co Signal frequency controller
US4051438A (en) * 1975-09-11 1977-09-27 International Telephone And Telegraph Corporation Co-channel multiple signal broadcasting system

Also Published As

Publication number Publication date
CA1088630A1 (de)
JPS52141113A (en) 1977-11-25
FR2352451B1 (de) 1981-12-11
DE2722570A1 (de) 1977-11-24
DE2722570B2 (de) 1981-01-15
FR2352451A1 (fr) 1977-12-16
GB1580744A (en) 1980-12-03
SE7705875L (sv) 1977-11-20
US4142155A (en) 1979-02-27
SE428623B (sv) 1983-07-11
CA1088630A (en) 1980-10-28

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Legal Events

Date Code Title Description
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8328 Change in the person/name/address of the agent

Free format text: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM. DR.JUR. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN

8328 Change in the person/name/address of the agent

Free format text: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM. DR.JUR. DR.RER.NAT. MARX, L., DIPL.-PHYS. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN

8327 Change in the person/name/address of the patent owner

Owner name: NIPPON TELEGRAPH AND TELEPHONE CORP., TOKIO/TOKYO,

8339 Ceased/non-payment of the annual fee