WO2002047409A1 - Systeme de station de base de communication radio comportant une station de base avancee optique - Google Patents
Systeme de station de base de communication radio comportant une station de base avancee optique Download PDFInfo
- Publication number
- WO2002047409A1 WO2002047409A1 PCT/JP2001/010659 JP0110659W WO0247409A1 WO 2002047409 A1 WO2002047409 A1 WO 2002047409A1 JP 0110659 W JP0110659 W JP 0110659W WO 0247409 A1 WO0247409 A1 WO 0247409A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- base station
- signal
- electrical
- output signal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25758—Optical arrangements for wireless networks between a central unit and a single remote unit by means of an optical fibre
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/085—Access point devices with remote components
-
- 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
Definitions
- FIG. 5 is a block diagram of a distortion removal circuit used in the wireless communication base station system including the optical forward base station according to the first embodiment of the present invention.
- FIG. 8 is a block diagram of a wireless communication base station system including an optical forward base station according to the third embodiment of the present invention.
- the operation of the wireless communication base station system including the thus configured optical forward base station 202 will be described below.
- a signal is transmitted from the wireless core base station 201 to the optical forward base station 202.
- the baseband signal input to baseband input terminal 210 is converted to a high-frequency modulation signal by modulation section 211 and output.
- the converted signal is input to terminal 10 of power divider 212, distributed to terminals 11 and 12, and output.
- the signal output from the terminal 11 is modulated by the electrical-optical converter 213 into an optical signal having a wavelength of U.
- the optical signal of the wavelength; tl modulated by the signal component output from the terminal 11 is transmitted to the optical forward base station 202 via the optical fiber 203.
- Terminal 20 which is one output terminal of power divider 310 is connected to delay circuit 31 1, and terminal 21 which is the other output terminal of power divider 310 is connected to amplifier 312.
- amplifier 312 amplifier
- the output terminal of 3 12 is connected to the variable phase shifter 3 14 and the variable attenuator 3 15 in this order.
- the output terminal of the delay circuit 311 and the output terminal of the variable attenuator 315 are connected to the terminals 22 and 23 of the power combiner 313, respectively.
- the output terminal of the power combiner 3 13 is connected to the distortion signal adjusting section 302. That is, the output terminal of the power combiner 3 13 is connected to the auxiliary amplifier 3 20.
- the amplifier used in the distortion extraction circuit 214 such as the amplifier 31 in FIG. 3 and the power amplifier 221 used in the optical forward base station 202 are the same. However, if the distortion component generated by the amplification in the power amplifier 221 can be canceled as described above, the amplifier 312 used in the distortion extraction circuit 214 and the optical forward base station 202 The power amplifier 2 2 1 used in the first embodiment may not be the same.
- the signal received by the antenna 225 is output from the terminal 18 of the antenna duplexer 224, and is amplified by the low noise amplifier 226.
- the output signal from the low-noise amplifier 226 is converted into an optical signal having a wavelength of Lrl by the electric-to-optical converter 227.
- This optical signal is transmitted to the wireless base station 201 via the optical fiber 205.
- the transmitted optical signal is input to the optical-to-electrical converter 217 and is converted into a high-frequency signal. Then, this high-frequency signal is demodulated into a baseband signal by the demodulation unit 218 and output to the baseband output terminal 219.
- the optical advancing base station 202 is determined according to the output power.
- a distortion extraction circuit 214 such as a variable phase shifter 314 and a variable attenuator 315, which act to suppress distortion of a transmission signal from a mobile phone to a mobile phone or the like.
- the distortion extraction circuit 2 14 may include a variable phase shifter 3 21 and a variable attenuator 3 2 2 as shown in FIG. 4, in which case, the variable phase shifter 3 2 1
- the variable attenuator 3 2 2 can also be controlled.
- the above-described delay circuit 2 29 is connected between the power distributor 2 12 in the wireless backbone base station 201 and the electric-to-optical conversion section 2 13, or in the optical forward base station 202. It may be connected between the converter 220 and the power amplifier 222. In such a case, the same effects as those described above can be obtained.
- the optical fiber 203 and the optical-electrical converter 220 are connected. Then, the output terminal of the optical-to-electrical converter 220 is connected to the input terminal 60 of the power distributor 250.
- the optical fiber 204 and the optical-electrical converter 223 are connected, and the output terminal of the optical-electrical converter 223 is connected to the input terminal 23 of the power combiner 313.
- the output terminal 62 of the power distributor 250 is connected to the input terminal 22 of the power combiner 313.
- the output terminal 24 of the power combiner 3 13 is connected to the auxiliary amplifier 3 20 via the variable phase shifter 3 2 1 and the variable attenuator 3 2 2.
- the output terminal of the auxiliary amplifier 320 is connected to the input terminal 14 of the power combiner 222.
- the output terminal 61 of the power distributor 250 is connected to the power amplifier 222.
- the output terminal of the power amplifier 222 is connected to the input terminal 13 of the power combiner 222. Electric power
- the output terminal 15 of the combiner 222 is connected to the terminal 16 of the antenna duplexer 224, and the terminal 17 of the antenna duplexer 224 is connected to the antenna 225.
- the terminal 18 of the antenna duplexer 2 24 is connected to the low-noise amplifier 226, and the output terminal of the low-noise amplifier 226 is connected to the input terminal of the electro-optical converter 227. You. Then, the output terminal of the electric-optical converter 227 is connected to the optical fiber 205.
- the optical forward base station 402 and the optical forward base station 403 will be described.
- the optical fiber 404 and the optical-electrical converter 220 are connected.
- the output terminal of the optical-to-electrical converter 222 is connected to the input terminal of the power amplifier 222, and the output terminal of the power amplifier 222 is connected to the terminal 133 of the power combiner 222.
- the optical fiber 405 is connected to the optical-electrical converter 223, and the output terminal of the optical-electrical converter 223 is connected to the terminal 14 of the power combiner 222.
- the distortion signal adjustment units installed between the converters 4 16 may be included in the optical forward base station 402 and the optical forward base station 403, respectively.
- the data is transmitted from the optical forward base station to a mobile phone or the like. 659
- the difference in the transmission time of the two signals is set so that the two signals are simultaneously input to the power combiner 222.
- This can be compensated for by installing a delay circuit in the wireless backbone base station 401 or the optical forward base stations 402, 403.
- the difference in transmission time between the two signals is improved. Can be compensated for.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01999251A EP1343335A4 (en) | 2000-12-08 | 2001-12-06 | RADIO COMMUNICATION BASE STATION SYSTEM WITH AN OPTICAL ADVANCED BASE STATION |
US10/432,356 US6980831B2 (en) | 2000-12-08 | 2001-12-06 | Radio communication base state system including optical advanced base station |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000374431 | 2000-12-08 | ||
JP2000-374431 | 2000-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002047409A1 true WO2002047409A1 (fr) | 2002-06-13 |
Family
ID=18843623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/010659 WO2002047409A1 (fr) | 2000-12-08 | 2001-12-06 | Systeme de station de base de communication radio comportant une station de base avancee optique |
Country Status (4)
Country | Link |
---|---|
US (1) | US6980831B2 (ja) |
EP (1) | EP1343335A4 (ja) |
CN (1) | CN1240230C (ja) |
WO (1) | WO2002047409A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6704545B1 (en) | 2000-07-19 | 2004-03-09 | Adc Telecommunications, Inc. | Point-to-multipoint digital radio frequency transport |
US7184728B2 (en) | 2002-02-25 | 2007-02-27 | Adc Telecommunications, Inc. | Distributed automatic gain control system |
US20040057543A1 (en) * | 2002-09-24 | 2004-03-25 | Arie Huijgen | Synchronizing radio units in a main-remote radio base station and in a hybrid radio base station |
US8958789B2 (en) * | 2002-12-03 | 2015-02-17 | Adc Telecommunications, Inc. | Distributed digital antenna system |
WO2005034350A1 (ja) * | 2003-09-30 | 2005-04-14 | Mitsubishi Denki Kabushiki Kaisha | 可変電力分配器並びにその誤差検出方法及び設定値補正方法 |
DE602004006949T2 (de) | 2004-01-08 | 2008-02-28 | Alcatel Lucent | Funkbasisstation mit mehreren Funkfrequenzköpfen |
JP2005277713A (ja) * | 2004-03-24 | 2005-10-06 | Toshiba Corp | 光伝送システムとその光送信装置 |
US8000737B2 (en) * | 2004-10-15 | 2011-08-16 | Sky Cross, Inc. | Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness |
US7460843B2 (en) * | 2005-03-17 | 2008-12-02 | Panasonic Corporation | Amplifier apparatus, polar modulation transmission apparatus and wireless communication apparatus |
EP2018722A1 (de) * | 2006-05-12 | 2009-01-28 | Siemens Home and Office Communication Devices GmbH & Co. KG | Vorrichtung zum senden und empfangen von daten sowie betriebsverfahren |
ATE488117T1 (de) * | 2009-03-24 | 2010-11-15 | Alcatel Lucent | Verfahren zur datenübertragung mittels eines ummantelungseliminierungs- und - wiederherstellungsverstärkers, ummantelungseliminierungs- und - wiederherstellungsverstärker, übertragungsvorrichtung, empfangsvorrichtung und kommunikationsnetzwerk dafür |
EP2247004B1 (en) | 2009-04-28 | 2015-06-03 | Alcatel Lucent | A method for data transmission using a LINC amplifier, a LINC amplifier, a transmitting device, a receiving device, and a communication network therefor |
US9001811B2 (en) | 2009-05-19 | 2015-04-07 | Adc Telecommunications, Inc. | Method of inserting CDMA beacon pilots in output of distributed remote antenna nodes |
WO2015126828A1 (en) | 2014-02-18 | 2015-08-27 | Commscope Technologiees Llc | Selectively combining uplink signals in distributed antenna systems |
US10499269B2 (en) | 2015-11-12 | 2019-12-03 | Commscope Technologies Llc | Systems and methods for assigning controlled nodes to channel interfaces of a controller |
DE102018120541A1 (de) * | 2018-08-23 | 2020-02-27 | Eaton Intelligent Power Limited | Medienkonverter und Verfahren zum Betreiben eines Medienkonverters |
CN110661573B (zh) * | 2019-09-27 | 2020-12-08 | 京信通信系统(中国)有限公司 | 一种rof通信远端机及rof系统 |
JP2021129167A (ja) * | 2020-02-12 | 2021-09-02 | 日本電気株式会社 | 光無線伝送システム |
Citations (3)
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JPH0698365A (ja) * | 1991-05-21 | 1994-04-08 | A T R Koudenpa Tsushin Kenkyusho:Kk | 無線リンク用光伝送システム |
JPH08149552A (ja) * | 1994-11-25 | 1996-06-07 | Nec Corp | 光マイクロセル伝送方式 |
JPH1022925A (ja) * | 1996-07-04 | 1998-01-23 | Nec Corp | 光通信方式 |
Family Cites Families (11)
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US4276514A (en) * | 1979-07-09 | 1981-06-30 | Trw Inc. | Wideband, phase compensated amplifier with negative feedback of distortion components in the output signal |
US5214524A (en) * | 1988-11-25 | 1993-05-25 | Sumitomo Electric Industries, Ltd. | Optical communication system |
JPH07264650A (ja) * | 1994-03-18 | 1995-10-13 | Fujitsu Ltd | 小型基地局を備えた移動通信システム |
EP0725477B1 (en) * | 1995-02-02 | 2001-08-08 | Nippon Telegraph And Telephone Corporation | Distortion compensator |
JP3997294B2 (ja) * | 1996-11-13 | 2007-10-24 | 独立行政法人情報通信研究機構 | 移動体無線通信システム |
JP3352929B2 (ja) * | 1997-12-12 | 2002-12-03 | 三菱電機株式会社 | フィードフォワード増幅器 |
KR100251387B1 (ko) * | 1997-12-29 | 2000-04-15 | 윤종용 | 피드 포워드 리니어라이져를 가지는 이동통신 단말기의수신회로 |
JP4095185B2 (ja) | 1998-11-06 | 2008-06-04 | 株式会社東芝 | 無線通信基地局装置 |
JP2000252758A (ja) * | 1999-03-01 | 2000-09-14 | Fujitsu Ltd | 位相補正増幅器及び該位相補正増幅器を用いたフィード・フォワード増幅器 |
EP1107450B1 (en) * | 1999-12-03 | 2005-10-19 | Hitachi Kokusai Electric Inc. | Amplifier with distortion compensation |
EP1217757B1 (en) * | 2000-11-24 | 2005-02-02 | Telefonaktiebolaget LM Ericsson (publ) | Base transceiver station with distortion compensation |
-
2001
- 2001-12-06 EP EP01999251A patent/EP1343335A4/en not_active Withdrawn
- 2001-12-06 CN CNB018201393A patent/CN1240230C/zh not_active Expired - Fee Related
- 2001-12-06 WO PCT/JP2001/010659 patent/WO2002047409A1/ja not_active Application Discontinuation
- 2001-12-06 US US10/432,356 patent/US6980831B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0698365A (ja) * | 1991-05-21 | 1994-04-08 | A T R Koudenpa Tsushin Kenkyusho:Kk | 無線リンク用光伝送システム |
JPH08149552A (ja) * | 1994-11-25 | 1996-06-07 | Nec Corp | 光マイクロセル伝送方式 |
JPH1022925A (ja) * | 1996-07-04 | 1998-01-23 | Nec Corp | 光通信方式 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1343335A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1480002A (zh) | 2004-03-03 |
EP1343335A1 (en) | 2003-09-10 |
EP1343335A4 (en) | 2006-06-07 |
CN1240230C (zh) | 2006-02-01 |
US6980831B2 (en) | 2005-12-27 |
US20040053644A1 (en) | 2004-03-18 |
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