IT1239544B - Sistema per radiocomunicazioni a diversita' nello spazio. - Google Patents

Sistema per radiocomunicazioni a diversita' nello spazio.

Info

Publication number
IT1239544B
IT1239544B IT48631A IT4863189A IT1239544B IT 1239544 B IT1239544 B IT 1239544B IT 48631 A IT48631 A IT 48631A IT 4863189 A IT4863189 A IT 4863189A IT 1239544 B IT1239544 B IT 1239544B
Authority
IT
Italy
Prior art keywords
space
communication system
radio communication
diversity radio
diversity
Prior art date
Application number
IT48631A
Other languages
English (en)
Other versions
IT8948631A0 (it
IT8948631A1 (it
Inventor
Jr John David Kaewell
Nicholas C Schreier
James J Roller
Original Assignee
Int Mobile Machines
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
Application filed by Int Mobile Machines filed Critical Int Mobile Machines
Publication of IT8948631A0 publication Critical patent/IT8948631A0/it
Publication of IT8948631A1 publication Critical patent/IT8948631A1/it
Application granted granted Critical
Publication of IT1239544B publication Critical patent/IT1239544B/it

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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
    • H04B7/082—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection selecting best antenna path

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Radio Relay Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
IT48631A 1988-12-08 1989-12-06 Sistema per radiocomunicazioni a diversita' nello spazio. IT1239544B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/281,186 US4953197A (en) 1988-12-08 1988-12-08 Combination spatial diversity system

Publications (3)

Publication Number Publication Date
IT8948631A0 IT8948631A0 (it) 1989-12-06
IT8948631A1 IT8948631A1 (it) 1991-06-06
IT1239544B true IT1239544B (it) 1993-11-05

Family

ID=23076303

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48631A IT1239544B (it) 1988-12-08 1989-12-06 Sistema per radiocomunicazioni a diversita' nello spazio.

Country Status (22)

Country Link
US (1) US4953197A (it)
JP (1) JPH02244913A (it)
CN (1) CN1014196B (it)
AU (1) AU606300B2 (it)
BE (1) BE1003343A3 (it)
BR (1) BR8906366A (it)
CA (1) CA2004808C (it)
CZ (1) CZ286014B6 (it)
DE (1) DE3940690C2 (it)
ES (1) ES2017869A6 (it)
FI (1) FI107852B (it)
FR (1) FR2640446B1 (it)
GB (1) GB2227910B (it)
HU (1) HU209626B (it)
IL (1) IL92520A0 (it)
IT (1) IT1239544B (it)
NL (1) NL193711C (it)
NO (1) NO178879C (it)
NZ (1) NZ231618A (it)
PL (1) PL164583B1 (it)
SE (1) SE506088C2 (it)
ZA (1) ZA90428B (it)

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US5140627A (en) * 1990-10-09 1992-08-18 Telefonaktiebolaget L M Ericsson Handoff procedure that minimizes disturbances to dtmf signalling in a cellular radio system
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CA2109576C (en) * 1992-04-24 1998-06-16 Patrick J. Marry Method and apparatus for determining signal transmission quality levels of a transmitted signal
DE69327825T2 (de) * 1992-08-10 2000-10-12 Lucent Technologies Inc., Murray Hill Funkübertragungssystem und Funkbasisstation zur Verwendung in einem derartigen System
US5561673A (en) * 1993-04-16 1996-10-01 Matsushita Electric Industrial Co., Ltd. Antenna switched diversity reciever
US5507035A (en) * 1993-04-30 1996-04-09 International Business Machines Corporation Diversity transmission strategy in mobile/indoor cellula radio communications
FI109737B (fi) * 1993-08-25 2002-09-30 Nokia Corp Menetelmä ja järjestelmä digitaalisen siirtolaitteen kantataajuisten vastaanottimien pääkanavien varmennusohjauksen suorittamiseksi
US6005856A (en) * 1993-11-01 1999-12-21 Omnipoint Corporation Communication protocol for spread spectrum wireless communication system
US6088590A (en) * 1993-11-01 2000-07-11 Omnipoint Corporation Method and system for mobile controlled handoff and link maintenance in spread spectrum communication
US6094575A (en) * 1993-11-01 2000-07-25 Omnipoint Corporation Communication system and method
US5586170A (en) * 1994-08-19 1996-12-17 Georgia Tech Research Corporation Cellular devices, systems and methods using intercell macro-diversity and dynamic channel allocation
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
US5742583A (en) * 1994-11-03 1998-04-21 Omnipoint Corporation Antenna diversity techniques
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
US5781612A (en) * 1995-03-10 1998-07-14 Northern Telecom Limited Radio terminal interfaces for voice and data telecommunications, and methods for their operation
US5845216A (en) * 1995-05-30 1998-12-01 Sierra Wireless, Inc. Optimized companding for communication over cellular systems
US5745484A (en) 1995-06-05 1998-04-28 Omnipoint Corporation Efficient communication system using time division multiplexing and timing adjustment control
US5689502A (en) * 1995-06-05 1997-11-18 Omnipoint Corporation Efficient frequency division duplex communication system with interleaved format and timing adjustment control
US5802046A (en) * 1995-06-05 1998-09-01 Omnipoint Corporation Efficient time division duplex communication system with interleaved format and timing adjustment control
US5959980A (en) 1995-06-05 1999-09-28 Omnipoint Corporation Timing adjustment control for efficient time division duplex communication
US5675629A (en) * 1995-09-08 1997-10-07 At&T Cordless cellular system base station
US5911120A (en) * 1995-09-08 1999-06-08 At&T Wireless Services Wireless communication system having mobile stations establish a communication link through the base station without using a landline or regional cellular network and without a call in progress
US5732360A (en) * 1995-09-08 1998-03-24 At & T Wireless Services And Atmel Corp Mobile telecommunication device and method used for changing wireless communication between base stations of different kinds
CA2188845A1 (en) * 1996-10-25 1998-04-25 Stephen Ross Todd Selection of an antenna operating in diversity
EP0876045B1 (en) * 1997-04-28 2003-09-10 Nortel Networks Limited Method and system for verifying and storing call related records in a telecommunications network
DE19743123B4 (de) * 1997-09-30 2005-11-24 Harman Becker Automotive Systems (Xsys Division) Gmbh Verfahren und Schaltungsanordnung zur Auswahl eines von mehreren Empfängern einer Diversity-Empfangsanlage
EP0999669A1 (en) * 1998-11-06 2000-05-10 Nortel Matra Cellular Method and apparatus for diversity reception of user messages with different forward error correction
DE19852091C1 (de) * 1998-11-12 2000-05-25 Deutsche Telekom Mobil Verfahren und Einrichtung zur Verbesserung der Audioqualität in einem Mobilfunknetz
US6947469B2 (en) 1999-05-07 2005-09-20 Intel Corporation Method and Apparatus for wireless spread spectrum communication with preamble processing period
US6810290B2 (en) * 2000-01-21 2004-10-26 Medtronic Minimed, Inc. Ambulatory medical apparatus with hand held communication device
US20070111689A1 (en) * 2000-07-24 2007-05-17 Hermann Link Apparatus for selecting a receiver among a plurality of receivers in a diversity receiver system based upon automatic gain correction
JP5021114B2 (ja) * 2000-09-07 2012-09-05 ソニー株式会社 無線中継システム及び方法
GB2370724B (en) * 2000-12-21 2004-07-14 Ubinetics Ltd Personal wireless communications apparatus
US6961545B2 (en) * 2001-04-09 2005-11-01 Atheros Communications, Inc. Method and system for providing antenna diversity
JP4043850B2 (ja) * 2002-06-03 2008-02-06 松下電器産業株式会社 ダイバシティ切替装置
US6930602B2 (en) * 2003-04-25 2005-08-16 Medtronic, Inc. Coaxial cable antenna for communication with implanted medical devices
US7561921B2 (en) * 2003-10-02 2009-07-14 Medtronic, Inc. Neurostimulator programmer with internal antenna
US20050075685A1 (en) * 2003-10-02 2005-04-07 Forsberg John W. Medical device programmer with infrared communication
US7991479B2 (en) * 2003-10-02 2011-08-02 Medtronic, Inc. Neurostimulator programmer with clothing attachable antenna
US7729766B2 (en) 2003-10-02 2010-06-01 Medtronic, Inc. Circuit board construction for handheld programmer
US7203549B2 (en) * 2003-10-02 2007-04-10 Medtronic, Inc. Medical device programmer with internal antenna and display
US7272445B2 (en) * 2003-10-02 2007-09-18 Medtronic, Inc. Medical device programmer with faceplate
US7263406B2 (en) 2003-10-02 2007-08-28 Medtronic, Inc. Medical device programmer with selective disablement of display during telemetry
US7706768B2 (en) * 2006-08-02 2010-04-27 Intel Corporation Diversity switching
EP2341652B1 (en) * 2010-01-05 2016-08-17 Alcatel Lucent Reception of a diversity-protected data flow in a radio communication network
US8706058B2 (en) 2011-03-24 2014-04-22 Honeywell International Inc. RF data transfer in a spherical cavity
US9813262B2 (en) 2012-12-03 2017-11-07 Google Technology Holdings LLC Method and apparatus for selectively transmitting data using spatial diversity
US9591508B2 (en) 2012-12-20 2017-03-07 Google Technology Holdings LLC Methods and apparatus for transmitting data between different peer-to-peer communication groups
US9979531B2 (en) 2013-01-03 2018-05-22 Google Technology Holdings LLC Method and apparatus for tuning a communication device for multi band operation
US10229697B2 (en) 2013-03-12 2019-03-12 Google Technology Holdings LLC Apparatus and method for beamforming to obtain voice and noise signals
US9549290B2 (en) 2013-12-19 2017-01-17 Google Technology Holdings LLC Method and apparatus for determining direction information for a wireless device
EP3454575B1 (en) * 2017-09-07 2020-06-24 Oticon A/s Power management in low power wireless link in a hearing aid system

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US3328698A (en) * 1963-06-28 1967-06-27 Itt Selector for choosing the strongest signal including means for inhibiting all signals below a selected level
DE2360929C2 (de) * 1973-12-06 1975-07-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Auswahl eines Diversitykanals über den Daten in Form von Bits übertragen werden
JPS5727629B2 (it) * 1973-12-19 1982-06-11
CA1065020A (en) * 1974-06-27 1979-10-23 William L. Hatton High reliability diversity communications system
JPS5119912A (en) * 1974-08-12 1976-02-17 Mitsubishi Electric Corp Oh kaisendaibaashiteihoshikino kaisenkirikaehoshiki
JPS5147313A (it) * 1974-10-21 1976-04-22 Nippon Telegraph & Telephone
JPS5542790B2 (it) * 1975-01-09 1980-11-01
JPS51112210A (en) * 1975-03-28 1976-10-04 Hitachi Ltd Mobile communication equipment
US4028627A (en) * 1975-12-29 1977-06-07 Motorola, Inc. Sample and hold valley detector
JPS5428669A (en) * 1977-08-08 1979-03-03 Nec Corp Noise measuring circuit
US4214213A (en) * 1977-10-25 1980-07-22 Rca Corporation Signal selecting system
JPS585617B2 (ja) * 1978-04-05 1983-02-01 株式会社日立国際電気 デイジタル伝送のダイバ−シチ送受信方法
DE3006990C2 (de) * 1980-02-25 1984-10-11 Ivan Grigor'evič Leningrad Kirienko Einrichtung zur automatischen Antennenumschaltung bei Mehrfachempfang
DE3015087A1 (de) * 1980-04-19 1981-10-22 Robert Bosch Gmbh, 7000 Stuttgart Sende/empfangsweg-ueberwachungseinrichtung
US4383332A (en) * 1980-11-21 1983-05-10 Bell Telephone Laboratories, Incorporated High capacity digital mobile radio system
US4477809A (en) * 1982-06-18 1984-10-16 General Electric Company Method for random-access radio-frequency data communications
US4513412A (en) * 1983-04-25 1985-04-23 At&T Bell Laboratories Time division adaptive retransmission technique for portable radio telephones
JPS60214641A (ja) * 1984-04-10 1985-10-26 Nec Corp 時分割多方向通信のスペース・ダイバシティ通信方式
US4644561A (en) * 1985-03-20 1987-02-17 International Mobile Machines Corp. Modem for RF subscriber telephone system
US4675863A (en) * 1985-03-20 1987-06-23 International Mobile Machines Corp. Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
JPH0683127B2 (ja) * 1985-07-22 1994-10-19 日本電気株式会社 ダイバーシチ受信無線機
US4704734A (en) * 1986-02-18 1987-11-03 Motorola, Inc. Method and apparatus for signal strength measurement and antenna selection in cellular radiotelephone systems
JPH0779299B2 (ja) * 1986-08-30 1995-08-23 日本電気株式会社 携帯無線機
US4779262A (en) * 1986-10-21 1988-10-18 International Mobile Machines Corp. Connection of subscriber communication network base station to external information network
US4777633A (en) * 1987-08-14 1988-10-11 International Mobile Machines Corp. Base station for wireless digital telephone system

Also Published As

Publication number Publication date
ZA90428B (en) 1990-10-31
FI895813A0 (fi) 1989-12-05
NO894893L (no) 1990-06-11
NO178879C (no) 1996-06-19
IT8948631A0 (it) 1989-12-06
GB2227910A (en) 1990-08-08
NO178879B (no) 1996-03-11
PL164583B1 (pl) 1994-08-31
SE506088C2 (sv) 1997-11-10
HUT60578A (en) 1992-09-28
CS8906956A2 (en) 1991-07-16
NO894893D0 (no) 1989-12-06
CA2004808C (en) 1995-01-10
DE3940690A1 (de) 1990-06-13
SE8904132D0 (sv) 1989-12-07
NL193711B (nl) 2000-03-01
IL92520A0 (en) 1990-08-31
NL8903028A (nl) 1990-07-02
JPH02244913A (ja) 1990-09-28
AU4585289A (en) 1990-07-19
BE1003343A3 (fr) 1992-03-03
CZ286014B6 (cs) 1999-12-15
HU896471D0 (en) 1990-02-28
AU606300B2 (en) 1991-01-31
ES2017869A6 (es) 1991-03-01
IT8948631A1 (it) 1991-06-06
CN1043414A (zh) 1990-06-27
CN1014196B (zh) 1991-10-02
DE3940690C2 (de) 2001-02-08
GB2227910B (en) 1993-10-27
NL193711C (nl) 2000-07-04
FR2640446A1 (fr) 1990-06-15
HU209626B (en) 1994-09-28
FI107852B (fi) 2001-10-15
CA2004808A1 (en) 1990-06-08
FR2640446B1 (fr) 1994-08-05
BR8906366A (pt) 1990-08-21
GB8927341D0 (en) 1990-01-31
US4953197A (en) 1990-08-28
SE8904132L (sv) 1990-06-09
NZ231618A (en) 1992-10-28

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961227