SG66285A1 - Use of diversity transmission to relax adjacent channel requirements in mobile telephone systems - Google Patents

Use of diversity transmission to relax adjacent channel requirements in mobile telephone systems

Info

Publication number
SG66285A1
SG66285A1 SG1996007769A SG1996007769A SG66285A1 SG 66285 A1 SG66285 A1 SG 66285A1 SG 1996007769 A SG1996007769 A SG 1996007769A SG 1996007769 A SG1996007769 A SG 1996007769A SG 66285 A1 SG66285 A1 SG 66285A1
Authority
SG
Singapore
Prior art keywords
mobile telephone
adjacent channel
telephone systems
diversity transmission
channel requirements
Prior art date
Application number
SG1996007769A
Other languages
English (en)
Inventor
Paul W Dent
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Publication of SG66285A1 publication Critical patent/SG66285A1/en

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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Transmitters (AREA)
SG1996007769A 1993-04-29 1994-04-28 Use of diversity transmission to relax adjacent channel requirements in mobile telephone systems SG66285A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5387193A 1993-04-29 1993-04-29

Publications (1)

Publication Number Publication Date
SG66285A1 true SG66285A1 (en) 1999-07-20

Family

ID=21987114

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996007769A SG66285A1 (en) 1993-04-29 1994-04-28 Use of diversity transmission to relax adjacent channel requirements in mobile telephone systems

Country Status (14)

Country Link
US (1) US5584057A (fr)
EP (1) EP0622910B1 (fr)
JP (1) JPH07508635A (fr)
KR (1) KR100331406B1 (fr)
CN (1) CN1037141C (fr)
AU (1) AU675714B2 (fr)
BR (1) BR9405296A (fr)
CA (1) CA2139234C (fr)
DE (1) DE69432844T2 (fr)
FI (1) FI946139A7 (fr)
NZ (1) NZ266341A (fr)
SG (1) SG66285A1 (fr)
TW (1) TW314672B (fr)
WO (1) WO1994026035A1 (fr)

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JP3290926B2 (ja) * 1997-07-04 2002-06-10 松下電器産業株式会社 送信ダイバーシチ装置
US6061336A (en) * 1997-09-30 2000-05-09 Qualcomm Incorporated Polarization enhanced CDMA communication system
US6181920B1 (en) * 1997-10-20 2001-01-30 Ericsson Inc. Transmitter that selectively polarizes a radio wave
US6125109A (en) * 1998-02-24 2000-09-26 Repeater Technologies Delay combiner system for CDMA repeaters and low noise amplifiers
EP1068679A1 (fr) * 1998-03-31 2001-01-17 QUALCOMM Incorporated Procede de combinaison des signaux dans une station de base d'un systeme amcr
US6889034B1 (en) * 1998-04-02 2005-05-03 Ericsson Inc. Antenna coupling systems and methods for transmitters
CN102983893B (zh) * 1998-08-18 2015-10-28 直视集团公司 多层载波离散多音通信系统和方法
MXPA01001753A (es) * 1998-08-18 2002-06-04 Beamreach Networks Inc Tecnologia de comunicacion multitono de separacion de portadora apilada.
CN100590985C (zh) * 1998-08-18 2010-02-17 比阿恩凤凰公司 多层载波离散多音通信技术
DE69940111D1 (de) * 1999-02-16 2009-01-29 Mitsubishi Electric Corp Funkübertragungssystem, sender und empfänger
US6421327B1 (en) * 1999-06-28 2002-07-16 Qualcomm Incorporated Method and apparatus for controlling transmission energy in a communication system employing orthogonal transmit diversity
JP3590759B2 (ja) * 2000-07-03 2004-11-17 株式会社巴川製紙所 静電荷像現像用トナーおよび二成分現像剤
JP3550085B2 (ja) * 2000-11-01 2004-08-04 松下電器産業株式会社 無線送信装置および無線送信方法
CN1211967C (zh) * 2001-07-20 2005-07-20 连宇通信有限公司 降低cdma通信系统相邻信道干扰的方法
US7042955B2 (en) * 2001-07-30 2006-05-09 Lucent Technologies Inc. Space time spreading and phase sweep transmit diversity
US7035599B2 (en) * 2001-07-30 2006-04-25 Lucent Technologies Inc. Biased phase sweep transmit diversity
US6980778B2 (en) * 2001-07-30 2005-12-27 Lucent Technologies Inc. Split shift phase sweep transmit diversity
US7020482B2 (en) * 2002-01-23 2006-03-28 Qualcomm Incorporated Reallocation of excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systems
US7149483B1 (en) * 2003-10-28 2006-12-12 Magnolia Broadband Inc. Amplifying diversity signals using power amplifiers
US7660598B2 (en) * 2004-12-21 2010-02-09 Qualcomm, Incorporated Transmit power reduction for a wireless device with multiple transmit signal paths
US20060237384A1 (en) * 2005-04-20 2006-10-26 Eric Neumann Track unit with removable partitions
US8493941B2 (en) * 2006-04-21 2013-07-23 Alcatel Lucent Method to control the effects of out-of-cell interference in a wireless cellular system using over-the-air feedback control
US8515377B2 (en) 2007-03-12 2013-08-20 Telefonaktiebolaget L M Ericsson (Publ) Imbalanced transmission combining at radio base station
US9059749B2 (en) 2009-10-02 2015-06-16 Sharp Kabushiki Kaisha Antenna port mode and transmission mode transitions
US8768397B2 (en) 2009-10-02 2014-07-01 Sharp Kabushiki Kaisha Transmission power control on a wireless communication device for a plurality of regulated bands or component carriers
US8660208B2 (en) * 2009-10-20 2014-02-25 Qualcomm Incorporated Apparatus and methods for QAM modulation using dual polar modulation
JP5751324B2 (ja) * 2011-05-30 2015-07-22 日本電気株式会社 Ｖｓｗｒ測定回路、無線通信装置、ｖｓｗｒ測定方法およびｖｓｗｒ測定プログラム
US8830886B2 (en) * 2011-11-04 2014-09-09 Broadcom Corporation Wireless communication device capable of controlling signal polarization based on channel conditions
KR102420198B1 (ko) * 2017-04-03 2022-07-13 삼성전자주식회사 장치 대 장치 간 통신에서 송신 전력을 제어하기 위한 전자 장치 및 방법
US12231915B2 (en) * 2021-01-25 2025-02-18 Samsung Electronics Co., Ltd. Method and electronic device for switching antenna

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US3662268A (en) * 1970-11-17 1972-05-09 Bell Telephone Labor Inc Diversity communication system using distinct spectral arrangements for each branch
US3693088A (en) * 1970-12-29 1972-09-19 Bell Telephone Labor Inc Diversity system for mobile radio using fade rate switching
IL38104A (en) * 1971-02-24 1974-01-14 Hughes Aircraft Co Adaptive power redistribution systems
US3748600A (en) * 1972-04-28 1973-07-24 Bell Telephone Labor Inc Power combining network
US4081748A (en) * 1976-07-01 1978-03-28 Northern Illinois Gas Company Frequency/space diversity data transmission system
US4298984A (en) * 1976-10-06 1981-11-03 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Method and apparatus for improving error rate on radio teletype circuits
FR2474791A1 (fr) * 1980-01-29 1981-07-31 Thomson Csf Systeme de transmission radioelectrique en diversite, de structure simple et economique, et reseau de telecommunication comportant de tels systemes
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US4513412A (en) * 1983-04-25 1985-04-23 At&T Bell Laboratories Time division adaptive retransmission technique for portable radio telephones
US4635006A (en) * 1984-12-18 1987-01-06 Rca Corporation Adjustable waveguide branch directional coupler
US4710944A (en) * 1986-10-17 1987-12-01 Rca Corporation Dual transmit-receive space diversity communication system
US4841527A (en) * 1987-11-16 1989-06-20 General Electric Company Stabilization of random access packet CDMA networks
JPH0744492B2 (ja) * 1988-06-15 1995-05-15 松下電工株式会社 偏波ダイバーシチ無線通信方式
US4912722A (en) * 1988-09-20 1990-03-27 At&T Bell Laboratories Self-synchronous spread spectrum transmitter/receiver
US5163181A (en) * 1988-10-21 1992-11-10 Harris Corporation Multiple rf signal amplification method and apparatus
US5274836A (en) * 1989-08-08 1993-12-28 Gde Systems, Inc. Multiple encoded carrier data link
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IL100213A (en) * 1990-12-07 1995-03-30 Qualcomm Inc CDMA microcellular telephone system and distributed antenna system therefor
DE4202786A1 (de) * 1991-01-31 1992-09-03 Clarion Co Ltd Spreizspektrum-kommunikationsanordnung
JPH05102899A (ja) * 1991-08-16 1993-04-23 Shiyoudenriyoku Kosoku Tsushin Kenkyusho:Kk 多周波通信方式
US5305353A (en) * 1992-05-29 1994-04-19 At&T Bell Laboratories Method and apparatus for providing time diversity
US5289499A (en) * 1992-12-29 1994-02-22 At&T Bell Laboratories Diversity for direct-sequence spread spectrum systems

Also Published As

Publication number Publication date
KR100331406B1 (ko) 2002-08-27
DE69432844D1 (de) 2003-07-31
AU675714B2 (en) 1997-02-13
TW314672B (fr) 1997-09-01
CA2139234A1 (fr) 1994-11-10
FI946139L (fi) 1995-02-03
BR9405296A (pt) 1999-08-31
AU6780294A (en) 1994-11-21
FI946139A0 (fi) 1994-12-28
CN1108867A (zh) 1995-09-20
FI946139A7 (fi) 1995-02-03
EP0622910B1 (fr) 2003-06-25
US5584057A (en) 1996-12-10
WO1994026035A1 (fr) 1994-11-10
EP0622910A3 (fr) 2000-01-12
CN1037141C (zh) 1998-01-21
EP0622910A2 (fr) 1994-11-02
DE69432844T2 (de) 2004-05-19
NZ266341A (en) 1996-08-27
KR950702356A (ko) 1995-06-19
JPH07508635A (ja) 1995-09-21
CA2139234C (fr) 2005-06-28

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