JP3734982B2 - The wireless device - Google Patents

The wireless device Download PDF

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JP3734982B2
JP3734982B2 JP14773899A JP14773899A JP3734982B2 JP 3734982 B2 JP3734982 B2 JP 3734982B2 JP 14773899 A JP14773899 A JP 14773899A JP 14773899 A JP14773899 A JP 14773899A JP 3734982 B2 JP3734982 B2 JP 3734982B2
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signal
optical
electrical
converter
radio
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JP2000341744A (en
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哲夫 廣田
俊雄 野島
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株式会社エヌ・ティ・ティ・ドコモ
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology
    • Y02D70/46Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication

Description

【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
この発明は、例えば移動通信用の基地局無線装置に用いられ、アレーアンテナを用いて構成した無線装置に関し、特にその給電構成に係わる。 The present invention is used, for example radio base stations for mobile communications, relates to a radio apparatus using an array antenna, in particular relating to its feed arrangement.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
移動通信用の基地局において、そのアンテナは鉄塔あるいは建物の屋上等の高所に設置され、無線装置の大半は建物の内部に置かれることが多い。 In the base station for mobile communication, the antenna is installed at a high place on the roof or the like of the steel tower or a building, most of the wireless device is often placed inside the building. 図3は従来の無線装置の構成例を示し、無線装置1は、高所に設置される部分であり主にアンテナ1aと、送受共用器1bと、低雑音増幅器1cとから成る。 Figure 3 shows an example of the configuration of a conventional radio device, the radio device 1 includes a main antenna 1a is a portion that is installed in a high place, a duplexer 1b, consists of a low noise amplifier 1c. 一方、受信機13、送信機23、電力増幅器24は建物の内部に置かれている。 On the other hand, the receiver 13, transmitter 23, power amplifier 24 is placed inside the building. これらの間は同軸ケーブル30によって接続されている。 Between which are connected by a coaxial cable 30.
【0003】 [0003]
この基地局無線装置において、アンテナ1aで受信した信号は送受共用器1bを経て低雑音増幅器1cにより増幅される。 In this radio base station, the signal received by the antenna 1a is amplified by the low noise amplifier 1c via the duplexer 1b. この受信信号は同軸ケーブル30により受信機13へ伝送され、受信機において周波数変換された後、復調され、受信ベースバンド信号を得る。 The received signal is transmitted by a coaxial cable 30 to the receiver 13 after being frequency converted at the receiver, demodulated, obtaining a reception baseband signal.
一方、送信機23は、送信ベースバンド信号で変調された高周波信号を生成し、これは電力増幅器24により増幅される。 On the other hand, the transmitter 23 generates a high-frequency signal modulated by the transmission baseband signal, which is amplified by the power amplifier 24. この高周波信号は同軸ケーブル30により高所の無線装置1へ伝送され、送受共用器1bを経てアンテナ1aから送信される。 The high frequency signal is transmitted by a coaxial cable 30 to the altitude of the wireless device 1, it is transmitted from the antenna 1a via the duplexer 1b.
【0004】 [0004]
このような無線装置においては、それぞれ一つの受信信号、送信信号を扱っている。 In such a wireless device, one of the received signals, respectively, are dealing with transmission signals. これに対し、複数のアンテナをアレー状に配置し、各アンテナで送受信される信号の振幅、位相を個々の移動局に対して最適に制御することにより通信品質の向上を図る方法がある。 In contrast, by arranging a plurality of antennas in an array, the amplitude of the signals transmitted and received by each antenna, there is a method to improve the communication quality by optimally controlling the phase for each mobile station.
図4は、アレーアンテナを用いる基地局無線装置を従来技術を用いて構成した例を示したものである。 Figure 4 is a diagram showing an example in which using conventional techniques the radio base station using an array antenna. ここでは、図3における無線装置1と同等の無線装置が無線装置2以下複数台設けられており、アンテナもそれぞれの無線装置に一個ずつ備えられている。 Here, the equivalent wireless device and the wireless device 1 of Figure 3 is provided with a plurality wireless device 2, the antenna is also provided one by one on the respective wireless device. 以下では無線装置、アンテナはそれぞれ全部でN台あるものとして説明する。 In the following the radio device, the antenna will be described as being N units in total, respectively. これらで受信された信号はそれぞれ独立した同軸ケーブル30によって受信機13をはじめとするN台の受信機に供給されている。 Signals received by these are supplied to the N units of the receiver including the receiver 13 by respective separate coaxial cables 30. これらはベースバンド信号に復調された後、アナログ/ディジタル変換器12等によってディジタル信号に変換され受信信号処理装置11に入力される。 These demodulated into a baseband signal is input to the reception signal processing unit 11 is converted to a digital signal by an analog / digital converter 12 and the like. 受信信号処理装置11はN個の受信信号に演算を施すことにより個々の移動局に対応した複数の受信信号10に分解する。 Received signal processing unit 11 decomposes into a plurality of received signals 10 corresponding to each mobile station by performing the operation on the N received signals.
【0005】 [0005]
また、個々の移動局にむけられた複数の送信信号20は送信信号処理装置21によって各アンテナに対応したN個の送信信号に変換された後、それぞれディジタル/アナログ変換器22等によってアナログベースバンド信号に変換される。 Moreover, after a plurality of transmission signals 20 that are directed to individual mobile stations are converted into N transmission signals corresponding to each antenna by the transmission signal processor 21, analog baseband by a respective digital / analog converters 22, etc. It is converted into a signal. これらはさらに送信機23等によって高周波信号に変換され、電力増幅器24等で増幅されてから同軸ケーブル30を経由して高所設置無線装置に送られアンテナ1a,2a等からそれぞれ送信される。 These are converted into a high frequency signal further by a transmitter 23, etc., altitude installation via the coaxial cable 30 is amplified by the power amplifier 24 such as a wireless device sent the antenna 1a, it is transmitted from 2a or the like.
【0006】 [0006]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
図4に示したような、従来技術により構成した無線装置においては、アレーアンテナを用いる場合に必要とされる複数のアンテナおよび送受信装置を、個々の同軸ケーブルを用いて接続している。 As shown in FIG. 4, in the wireless device constructed according to the prior art, a plurality of antennas and transmitting and receiving apparatus is required when using an array antenna, are connected with the individual coaxial cables. このため、アンテナ等が設置される建物の屋上等の高所から、無線装置の大半が収容される建物の内部へ大量の同軸ケーブルを敷設する必要がある。 Therefore, from a height of the roof of a building in which the antenna or the like is installed, it is necessary to lay a large number of coaxial cables to the interior of the building where most of the wireless device is housed. このことは設置工事の費用を増大させるのみならず、設置場所の条件によってはケーブルの敷設そのものを困難にすることがあり、アレーアンテナを使用するにあたっての大きな障害となる。 This not only increases the cost of installation work, the conditions of the installation location may be difficult to lay itself of the cable, it becomes a major obstacle in using an array antenna. 同軸ケーブルの代りに光ファイバケーブルを用いて、工事を容易にすることが考えられる。 Using an optical fiber cable instead of coaxial cable, it is conceivable to facilitate construction. しかし、この場合、光/電気変換、電気/光変換の過程で歪みが発生し、大きな送信電力の伝送は困難となる。 However, in this case, the optical / electrical conversion, distortion occurs in the course of the electrical / optical conversion, transmission of large transmission power is difficult.
【0007】 [0007]
この発明の目的は、このような大量の同軸ケーブル敷設が必要な点を解決し、より簡単な工事により設置可能であり、かつ大きな送信電力をも使用可能な無線装置を提供することにある。 The purpose of this invention, such a point to resolve the necessary large amount of coaxial cabling, it can be disposed by a simpler construction, and to provide a radio apparatus usable also a large transmission power.
【0008】 [0008]
【課題を解決するための手段】 In order to solve the problems]
請求項1の発明の無線装置は、高所に設置される第1の無線装置群と第1の高出力用無線装置1、屋内に設置される第2の無線装置群と第2の高出力用無線装置から成る。 Wireless device of the invention of claim 1, the first radio apparatus group and the first high-power radio device 1, the second radio apparatus group to be installed indoors and second high output to be installed in a high place consisting of use wireless devices. 第1の無線装置群は、主にアンテナ、送受共用器、低雑音増幅器、電力増幅器、電気/光変換器、光/電気変換器から成るN個の無線装置で構成され、第2の無線装置群は、受信機、送信機、電気/光変換器、光/電気変換器を備えたN個の無線装置で構成される。 The first radio apparatus group is mainly antenna, duplexer, a low noise amplifier, power amplifier, the electrical / optical converter, consists of N radio device comprising an optical / electrical converter, the second wireless device group, receivers, transmitters, electrical / optical converter, and a N radio apparatus equipped with a light / electric converter. また、第1の高出力用無線装置は、主にアンテナ、送受共用器、低雑音増幅器から成り、第2の高出力用無線装置は、受信機、送信機、電力増幅器を備える。 The first high-power radio apparatus mainly antenna, duplexer, made from the low noise amplifier, a second high-power radio device comprises a receiver, a transmitter, a power amplifier. 第1の無線装置群と第2の無線装置群は多芯光ファイバケーブルにより接続され、第1の無線装置群に含まれる個々の無線装置の入出力端子は、多芯光ファイバケーブルに含まれる芯線によって、第2の無線装置群に含まれる個々の無線装置の入出力端子に接続されている。 The first radio apparatus group and the second radio apparatus group is connected by a multi-core optical fiber cable, the input and output terminals of each wireless device included in the first radio apparatus group is included in the multi-core optical fiber cable the core wire is connected to the output terminal of each wireless device included in the second radio apparatus group. 一方、第1の高出力用無線装置と第2の高出力用無線装置との間は同軸ケーブルにより接続される。 On the other hand, between the first high-power radio device and the second high-power radio device is connected by a coaxial cable.
【0009】 [0009]
このように請求項1の発明の無線装置では、同軸ケーブルによる接続は一組の無線装置間のみに用いられ、他の複数の無線装置間は1本の多芯光ファイバケーブルによって接続されており、鉄塔や屋上等の高所から建物の内部へ敷設する同軸ケーブルの本数が少なくてすむという効果が得られる。 In wireless devices thus according to claim 1 invention is connected by a coaxial cable is used only between a pair of wireless devices, among a plurality of other wireless devices are connected by a single multi-core optical fiber cable , the effect is obtained that requires less number of coaxial cable laying from a height, such as a steel tower and the roof into the interior of the building.
請求項3の発明の無線装置においては、高所に設置されたN個の無線装置は、アンテナ、送受共用器、低雑音増幅器、電力増幅器を備え、さらに受信信号を復調して受信ベースバンド信号を出力する受信機、送信ベースバンド信号を高周波信号に変換する送信機、受信ベースバンド信号をディジタル信号に変換するアナログ/ディジタル変換器、ディジタル信号を送信ベースバンドに変換するディジタル/アナログ変換器を備える。 In the radio apparatus of the invention of claim 3, N pieces of radio apparatus installed in a high place, an antenna, a duplexer, a low noise amplifier, comprising a power amplifier, the reception baseband signal and further demodulates the received signal receiver for outputting a transmitter for converting a transmission baseband signal into a high frequency signal, an analog / digital converter for converting the received baseband signal into a digital signal, a digital / analog converter for converting the digital signal to the transmission baseband provided. N個の無線装置の出力信号は多重化装置によって1系列の信号に束ねられ、電気/光変換器により光信号に変換されてから光ファイバケーブルによって屋内へ伝送される。 The output signal of the N wireless devices are bundled in a series of signals by the multiplexer, and transmitted to the indoor through the optical fiber cable from being converted into an optical signal by the electric / optical converter. また、屋内から光信号の形で伝送されてくる信号は光/電気変換器により電気信号に変換された後、分離装置によってN系列の信号に分離されてN個の無線装置に入力される。 The signal transmitted from the indoor in the form of optical signals is converted into an electrical signal by the optical / electrical converter, is separated into signals of N channels is input to the N radio apparatus by a separating device.
【0010】 [0010]
一方、屋内に設置する装置は主に、多重化された受信信号からN系列の受信信号を取り出す分離装置、N系列の受信信号を処理する受信信号処理装置、N系列の送信信号を生成する送信信号処理装置、N系列の送信信号を多重化する多重化装置から成り、高所に設置される無線装置と光信号の形で信号をやり取りするための電気/光変換器、光/電気変換器を備える。 Meanwhile, the apparatus to be installed indoors primarily separator to take out received signals N channels from the multiplexed received signal, the reception signal processing apparatus for processing a received signal of the N sequences, the transmission for generating a transmission signal of N series signal processing device comprises a transmission signal of N series from the multiplexer for multiplexing the radio apparatus installed in a high place and the electrical / optical converter for exchanging signals in the form of an optical signal, an optical / electrical converter equipped with a.
【0011】 [0011]
このように請求項3の発明の無線装置は、送受信器の機能をアンテナ側に用意し、屋内設置装置とのインタフェースは多重化されたディジタル信号で変調された光信号の形をとるため、高所設置無線装置と屋内設置装置の間は光ファイバケーブル2本で接続できる点に特徴があり、建物の屋上等の高所から建物の内部へのケーブル敷設が容易であるという効果が得られる。 Thus wireless device of the invention of claim 3 is to provide a facility of the transceiver to the antenna side, the interface with the indoor installation device for the form of the modulated optical signal by a digital signal multiplexed, high during installation wireless device and an indoor installation apparatus where is characterized in that it can be connected by two optical fiber cables, the effect is obtained that cabling from height of the roof of a building to the interior of a building is easy.
【0012】 [0012]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
請求項1及び2の発明の実施例を図1により説明する。 The embodiment of the present invention defined in claim 1 and 2 will be described with reference to FIG. 第1の無線装置群40と第1の高出力用無線装置100は鉄塔上あるいは建物の屋上等の高所に設置されており、第2の無線装置群41と第2の高出力用無線装置101は屋内に設置される。 The first radio apparatus group 40 and the first high-power radio device 100 are set in high positions of the roof or the like of the tower or on a building, and the second wireless device group 41 and the second high-power radio device 101 is installed indoors. 第1の無線装置群40はアンテナ1a、アンテナ2a等のN個のアンテナ、および無線装置1、無線装置2等のN個の無線装置から成る。 The first radio apparatus group 40 the antenna 1a, the N antennas, such as antenna 2a, and the radio device 1, of N radio device such as a wireless device 2. これらN個の無線装置は送受共用器1b、これに接続された低雑音増幅器1c、及び電力増幅器1d、電気/光変換器1e、光/電気増幅器1fよりなる。 The N is the wireless device duplexer 1b, a low-noise amplifier 1c connected thereto, and a power amplifier 1d, electrical / optical converter 1e, consisting optical / electrical amplifier 1f. また、第2の無線装置群41は、光/電気変換器15、送信機13、アナログ/ディジタル変換器12をひと組の装置とするN組の装置と、電気/光変換器25、送信機23、ディジタル/アナログ変換器22をひと組の装置とするN組の装置と、受信信号処理装置11と、送信信号処理装置21から成る。 The second radio apparatus group 41, the optical / electrical converter 15, the transmitter 13, and the N sets of devices for analog / digital converter 12 and human sets of equipment, electrical / optical converter 25, the transmitter 23, the N sets of devices for the digital / analog converter 22 and human set of apparatus, the received signal processing unit 11, consisting of the transmission signal processing unit 21. 第1の無線装置群40と第2の無線装置群41は多芯光ファイバケーブル31によって接続され、第1の高出力用無線装置100と第2の高出力用無線装置101は同軸ケーブル30で接続されている。 The first radio apparatus group 40 and the second wireless device group 41 is connected by a multi-core optical fiber cable 31, the first high-power radio device 100 and the second high-power radio device 101 is a coaxial cable 30 It is connected. 第1の高出力用無線装置100はアンテナ100a、送受共用器100b、低雑音増幅器100cからなる。 The first high-power radio device 100 includes an antenna 100a, duplexer 100b, made of a low-noise amplifier 100c. 第2の高出力用無線装置101はアナログ/ディジタル変換器112、受信機113、ディジタル/アナログ変換器122、送信機123、電力増幅器124を含み、アナログ/ディジタル変換器112、ディジタル/アナログ変換器122はそれぞれ受信信号処理装置11と、送信信号処理装置21に接続されている。 The second high-power radio device 101 analog / digital converter 112, a receiver 113, a digital / analog converter 122, transmitter 123 includes a power amplifier 124, an analog / digital converter 112, digital / analog converter 122 the received signal processor 11 respectively, it is connected to the transmission signal processing unit 21.
【0013】 [0013]
第1の無線装置群40に含まれるアンテナによって受信された信号は、無線装置1、無線装置2等のN個の無線装置内の各低雑音増幅器1cによりそれぞれ増幅され、更に各電気/光変換器1eで電気/光変換が施された後、多芯光ファイバケーブル31の芯線一本ずつによってそれぞれ屋内に設置された第2の無線装置群41に送られる。 Signal received by the antenna included in the first radio apparatus group 40, the wireless device 1, it is amplified by the low noise amplifier 1c in N wireless devices such as wireless device 2, and each electrical / optical conversion after electrical / optical conversion vessel 1e is subjected, it is sent to the second radio unit group 41, which is installed indoors respectively by one by one core of the multi-core optical fiber cable 31. 第2の無線装置群41においてはこれらの光信号は光/電気変換器15,・・・によりそれぞれ電気信号に戻され、さらに受信機13,・・・によりそれぞれ復調され、ベースバンド信号が生成される。 These optical signals optical / electrical converter 15 in the second radio unit group 41, respectively back into an electric signal by ..., demodulated respectively further receiver 13, by ..., generates baseband signal It is. このベースバンド信号はアナログ/ディジタル変換器12,・・・によりそれぞれディジタル信号に変換されてから、受信信号処理装置11に送られる。 The baseband signal is an analog / digital converter 12, after being converted into digital signals by ..., and is sent to the reception signal processing unit 11. 一方、アンテナ100aで受信された信号は低雑音増幅器100cで増幅され、電気信号のままで同軸ケーブル30により受信機113に送られ、復調される。 Meanwhile, the signal received by the antenna 100a is amplified by the low noise amplifier 100c, it is sent to the receiver 113 by a coaxial cable 30 while the electric signal is demodulated. この信号もアナログ/ディジタル変換器112でディジタル信号に変換されてから、受信信号処理装置11に送られる。 The signal from being converted into a digital signal by an analog / digital converter 112, and sent to the reception signal processing unit 11. 受信信号処理装置11に入力されたN+1系列の信号は一括して処理され、所要の受信信号10が得られる。 Signal of the input N + 1 series in the received signal processor 11 is processed collectively, the required received signal 10 is obtained.
【0014】 [0014]
次に、送信すべき信号20は、送信信号処理装置21によって、N+1系列のディジタル信号に変換される。 Next, the signal 20 to be transmitted, the transmission signal processing unit 21, is converted into a digital signal of N + 1 series. このうちN系列については、ディジタル/アナログ変換器22,・・・によりそれぞれアナログ信号に変換され、更に送信機23,・・・においてそれぞれ高周波信号とされた後、電気/光変換器25,・・・によりそれぞれ光信号に変換され、多芯光ファイバケーブル31によって無線装置群1に向けて伝送される。 For these N channels, the digital / analog converter 22, respectively is converted into an analog signal by ... further transmitter 23 after being respectively high frequency signal in ..., electric / optical converter 25, & ... they are respectively converted into optical signals by, and transmitted to the wireless device group 1 by a multi-core optical fiber cable 31. 一方、残りの1系列の信号はディジタル/アナログ変換器122でアナログ信号に変換された後、送信機123によって高周波信号とされ、更に、電力増幅器124によって増幅され、電気信号のままで同軸ケーブル30によって伝送される。 On the other hand, after the signals of the remaining 1 sequence which is converted into an analog signal by a digital / analog converter 122 is a high frequency signal by the transmitter 123, further amplified by the power amplifier 124, the coaxial cable 30 remains electrical signal transmitted by.
【0015】 [0015]
第1の無線装置群40ではN系列の光信号は各光/電気変換器1fによりそれぞれ電気信号に戻され、さらに各電力増幅器1dで所要の電力レベルまでそれぞれ増幅され、アンテナ1a,・・・より送信される。 Optical signal of the first radio apparatus group 40 for N series each returned to an electric signal by the optical / electrical converter 1f, are respectively amplified further to a required power level in each power amplifier 1d, the antenna 1a, · · · more is sent. 一方、第1の高出力用無線装置100においては、同軸ケーブル30からの信号はそのまま送受共用器100bを介してアンテナ100aより送信される。 On the other hand, in the first high-power radio device 100, the signal from the coaxial cable 30 is transmitted from antenna 100a as through a duplexer 100b.
【0016】 [0016]
無線装置群間の信号を光信号に置き換えると、細心、軽量の光ファイバによる接続ができる利点があるが、反面、光/電気間の変換の過程で歪みを発生する。 Replacing a signal between the radio apparatus group to an optical signal, meticulous, there is an advantage that it is connected by a lightweight optical fiber, the other hand, it generates distortion in the process of conversion between optical / electrical. このため大きな送信電力が必要な場合においては伝送が困難な場合がある。 It may transmit is difficult in this case for a large transmission power is required. この実施例においては、比較的低電力のN系列の信号については光信号に置き換えて多芯光ファイバケーブルにより伝送し、特に大きな送信電力を要する第1の高出力用無線装置100と第2の高出力用無線装置101についてのみ同軸ケーブル30で接続している。 In this embodiment, a relatively low power of substituting the optical signal transmitted by the multi-core optical fiber cable for signals of N sequences, the first high-power radio device 100 and a second especially requires a large transmission power It is connected by a coaxial cable 30 only for high-power radio device 101. しかしこれらN+1組の無線装置は一体として動作し、送受信信号は受信信号処理装置11と、送信信号処理装置21において一括して処理される。 However, these N + 1 set of wireless device operates as an integral, transmission and reception signals from the reception signal processor 11, it is processed collectively in the transmission signal processing unit 21. これにより、ケーブルの敷設を最小限に抑えることができるという利点がある。 This has the advantage that it is possible to minimize the laying of the cable.
【0017】 [0017]
次に、請求項3の発明の実施例を図2により説明する。 Next, an embodiment of the invention of claim 3 by FIG. 無線装置1をはじめN台の無線装置、および多重化装置19、分離装置29は鉄塔上あるいは建物の屋上等の高所に設置されたおり、屋内には分離装置16、多重化装置26、受信信号処理装置11、送信信号処理装置21が設置されている。 Wireless devices 1 Introduction N number of wireless devices, and multiplexer 19, the separation device 29 is installed on the high place of the roof or the like of the tower or on a building, the separation device 16 is indoors, multiplexer 26, receiver signal processor 11, the transmission signal processing unit 21 is installed. 両者は電気/光変換器18,27、光/電気変換器17,28を介して光ファイバケーブル32によって接続されている。 Both are connected by the optical fiber cable 32 via electric / optical converter 18 and 27, an optical / electrical converter 17, 28.
【0018】 [0018]
アンテナ1aによって受信された信号は、送受共用器1bを経て低雑音増幅器1cにより増幅される。 Signals received by the antenna 1a is amplified by the low noise amplifier 1c via the duplexer 1b. 受信機1gはこの受信信号を復調しベースバンド信号を生成する。 Receiver 1g generates a baseband signal by demodulating the received signal. このベースバンド信号はアナログ/ディジタル変換器1iによってサンプリングされディジタル信号に変換される。 The baseband signal is converted into a digital signal sampled by the analog / digital converter 1i. 同様に、他のアンテナで受信した信号についても無線装置2等、他の無線装置においてそれぞれ復調され、ディジタル化されたベースバンド信号となる。 Similarly, wireless device 2 and the like even for a signal received by another antenna, demodulated, respectively, in other wireless devices, the digitized baseband signal. これらのN系列のディジタルベースバンド信号は多重化装置19によって一系列のディジタル信号にまとめられ、電気/光変換器18によって、変調された光信号の形に変換され、光ファイバケーブル32によって屋内に向けて伝送される。 Digital baseband signals of N channels by multiplexer 19 are combined into a digital signal of a single sequence, the electric / optical converter 18, is converted into a modulated optical signal, indoors by an optical fiber cable 32 It is transmitted towards.
【0019】 [0019]
この信号は光/電気変換器17によって電気信号に戻され、分離装置16によって再びN系列のディジタル信号となる。 This signal is returned to an electric signal by the optical / electrical converter 17, a digital signal again N series by the separation device 16. これは受信信号処理装置11によってディジタル信号処理を施され、所要の受信信号10が得られる。 It is subjected to digital signal processing by the reception signal processing unit 11, a required received signal 10 is obtained.
送信すべき信号20は、送信信号処理装置21によって、個々のアンテナおよび無線装置に対応したN系列のディジタル信号に変換される。 Signal 20 to be transmitted, the transmission signal processing unit 21, is converted into a digital signal of N sequence corresponding to each antenna and radio equipment. これらは多重化装置26によって一系列のディジタル信号にまとめられ、電気/光変換器18によって光信号に変換され、光ファイバケーブル32によって伝送される。 These are combined into a digital signal of a single sequence by the multiplexing unit 26 is converted into an optical signal by the electric / optical converter 18 and transmitted by the optical fiber cable 32.
【0020】 [0020]
この光信号は、光/電気変換器28によって電気信号に戻され、分離装置29によって再びN系列のディジタル信号となる。 This optical signal is returned to an electric signal by the optical / electrical converter 28, a digital signal again N series by the separation device 29. これらは無線装置1をはじめとするN台の無線装置にそれぞれ入力される。 These are input to the N units of wireless devices such as wireless device 1. 無線装置1においては、入力されたディジタル信号はディジタル/アナログ変換器1jによってアナログ信号に変換され、送信機1hによって変調された高周波信号が生成される。 In the radio apparatus 1 is a digital signal input is converted into an analog signal by a digital / analog converter 1j, a high-frequency signal modulated by the transmitter 1h is generated. これは電力増幅器1dによって増幅され、送受共用器1bを経由してアンテナ1aより送信される。 This is amplified by the power amplifier 1d, it is transmitted from the antenna 1a via the duplexer 1b. 同様に無線装置2をはじめとする他の無線装置においても、それぞれ分離装置29からの信号をもとに高周波信号が生成され、増幅されたのちアンテナより送信される。 Similarly, in other wireless devices such as wireless device 2, the high-frequency signal is generated on the basis of a signal from each separator 29, and transmitted from an antenna after being amplified.
【0021】 [0021]
この実施例においては、無線装置間の信号のやりとりは多重化されたディジタル信号により行われており、2本の光ファイバのみによって接続されているため、ケーブルの敷設が容易であるという利点がある。 In this embodiment, exchange of signals between the wireless device is performed by a digital signal multiplexed, since it is connected only by two optical fibers, there is an advantage that the laying of the cable is easy . また、第1の実施例と同様に、雷害に対する耐力も大きい。 As in the first embodiment, even greater resistance to lightning damage.
【0022】 [0022]
【発明の効果】 【Effect of the invention】
以上説明したように、この発明によれば、アンテナをはじめとする無線装置群が設置される建物の屋上等の高所から、他の無線装置が収容される建物の内部へ大量の同軸ケーブルを敷設する必要がなく、工事が簡単ですむという効果が得られる。 As described above, according to the present invention, from a height of the roof of a building where the radio apparatus group including the antenna is installed, a large amount of coaxial cable to the interior of the building by another wireless device is accommodated there is no need to lay an effect is obtained that the construction requires only simple. また装置間の接続は光ファイバによっているため、雷害に対して耐力が大きいという効果を有する。 The connection between the devices because of by the optical fiber has the advantage that a large strength against lightning damage. また高出力送信については同軸ケーブルを利用するため、光/電気変換、電気/光変換による歪みの問題が生じない。 Since the high power transmission utilizing coaxial cable, optical / electrical conversion, distortion problem does not occur due to electrical / optical conversion.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】請求項1及び2の発明の実施例を示すブロック図。 1 is a block diagram showing an embodiment of the present invention defined in claim 1 and 2.
【図2】請求項3の発明の実施例を示すブロック図。 Block diagram illustrating an embodiment of the invention of FIG. 2 according to claim 3.
【図3】従来技術による第1の構成例を示すブロック図。 3 is a block diagram illustrating a first configuration example according to the prior art.
【図4】従来技術による第2の構成例を示すブロック図。 4 is a block diagram a conventional showing a second configuration example according to art.

Claims (3)

  1. 屋外に設置された第1の高出力用無線装置と、 First and high output radio apparatus installed outdoors,
    上記屋外に設置され、上記第1の高出力用無線装置に比べ低出力の複数の無線装置からなる第1の無線装置群と、 Installed in the outdoors, a first radio apparatus group including a plurality of wireless device with low output as compared to the first high-power radio device,
    屋内に設置され、第2の高出力用無線装置と、 Are installed indoors, and a second high-power radio device,
    上記屋内に設置され、上記第2の高出力用無線装置に比べ低出力の複数の無線装置からなる第2の無線装置群と、 It is installed in the indoor, and a second radio apparatus group including a plurality of wireless device with low output as compared to the second high-power radio device,
    上記第1の無線装置群の各無線装置と、上記第2の無線装置群の各無線装置との対応するものをそれぞれ接続する多芯光ファイバケーブルと、 And each wireless device of the first wireless device group, and the multi-core optical fiber cable connecting corresponding ones of each of the respective wireless device of the second radio apparatus group,
    上記第1の高出力無線装置と上記第2の高出力無線装置とを接続する一対の送信用及び受信用同軸ケーブルとを具備する無線装置。 Radio apparatus comprising the above-described first high-power radio device and the second high-power radio device and the coaxial cable pair of transmission and reception for connecting.
  2. 上記第1の無線装置群の各無線装置は、 Each wireless device of the first wireless device group,
    アンテナと、そのアンテナに接続された送受共用器と、その送受共用器よりの受信信号を増幅する低雑音増幅器と、その低雑音増幅器の出力信号を光信号に変換して上記多芯光ファイバケーブルの1本の芯線へ供給する電気/光変換器と、上記多芯光ファイバケーブルの1本の芯線からの光信号を電気信号に変換する光/電気変換器と、その光/電気変換器よりの電気信号を増幅して、上記送受共用器へ出力する電力増幅器とよりなり、 Antenna and a duplexer connected to the antenna, low noise amplifier and its output signal of the low noise amplifier is converted into an optical signal the multi-core optical fiber cable for amplifying the received signal from the duplexer one electrical / optical converter for supplying the core of the optical / electrical converter for converting an optical signal into an electrical signal from one wire of the multicore optical fiber cables, from the optical / electrical converter amplifies the electrical signal, be more power amplifiers to be output to the duplexer,
    上記第2の無線装置群の各無線装置は、 Each wireless device of the second wireless device group,
    上記多芯光ファイバケーブルの1本の芯線からの光信号を電気信号に変換する光/電気変換器と、その光/電気変換器からの電気信号を復調する受信機と、送信機と、その送信機の出力信号を光信号に変換して上記多芯光ファイバケーブルの1本の芯線へ供給する電気/光変換器とよりなり、 An optical / electrical converter for converting an optical signal from one wire of the multicore optical fiber cable into an electrical signal, a receiver for demodulating the electric signal from the optical / electrical converter, and a transmitter, the converts the output signal of the transmitter to an optical signal becomes more and one supplied to the core wire electrical / optical converter of the multi-core optical fiber cable,
    上記第1の高出力用無線装置は、アンテナと、そのアンテナに接続された送受共用器と、その送受共用器よりの受信信号を増幅して上記受信用同軸ケーブルに供給する低雑音増幅器とよりなり、上記送信用同軸ケーブルよりの送信信号を上記送受共用器へ供給し、 The first high-power radio device is more an antenna, a connected duplexer to the antenna, a low noise amplifier amplifies the received signal from the duplexer supplied to the coaxial cable the receiver it supplies a transmission signal from the transmission coaxial cable to the duplexer,
    上記第2の高出力用無線装置は、上記受信用同軸ケーブルからの受信信号を復調する受信機と、送信機と、その送信機の出力信号を増幅して上記送信用同軸ケーブルへ供給する電力増幅器とよりなることを特徴とする請求項1記載の無線装置。 It said second high output radio apparatus includes a receiver for demodulating a received signal from the coaxial cable said receiving, a transmitter, power supply amplifies an output signal of the transmitter to the transmission coaxial cable wireless device according to claim 1, characterized in that more the amplifier.
  3. 基地局の屋外に設けられたそれぞれ一対の送信機及び受信機を備えた複数の無線装置よりなる無線装置群と、 A radio apparatus group including a plurality of wireless devices, each provided with a pair of transmitters and receivers for outdoor base station,
    上記無線装置群の各受信機よりの出力信号である各移動局からのベースバンド信号を多重化する第1の多重化装置と、 A first multiplexer for multiplexing the base band signal from each mobile station which is the output signal from each receiver of the radio apparatus group,
    その第1の多重化装置の出力信号を第1の光信号に変換する第1の電気/光変換器と、 A first electrical / optical converter for converting an output signal of the first multiplexer to the first optical signal,
    第2の光信号を電気信号に変換する第1の光/電気変換器と、 A first optical / electrical converter for converting the second optical signal into an electric signal,
    その変換された電気信号を分離して上記無線装置群の対応送信機にベースバンド信号の入力信号として供給する第1の分離装置と、 A first separation device supplied as an input signal of the baseband signal to a corresponding transmitter of the radio unit groups separating the converted electrical signal,
    上記基地局の屋内に設けられた各移動局へのベースバンド信号を処理して、上記無線装置群の各無線装置対応のベースバンド信号として出力する送信信号処理装置と、 Processes the baseband signal to each mobile station provided indoors of the base station, and the transmission signal processing apparatus for outputting a baseband signal of each wireless device corresponding the radio apparatus group,
    その送信信号処理装置よりのベースバンド信号の出力信号を多重化する第2の多重化装置と、 A second multiplexer for multiplexing the output signal of the baseband signal from the transmission signal processing unit,
    その第2の多重化装置の出力信号を上記第2の光信号に変換する第2の電気/光変換器と、 A second electrical / optical converter for converting an output signal of the second multiplexer to the second optical signal,
    上記第1の光信号を電気信号に変換する第2の光/電気変換器と、 A second optical / electrical converter for converting the first optical signal into an electrical signal,
    その変換された電気信号を多重分離する第2の分離装置と、 A second separator for demultiplexing the converted electric signals,
    その第2の分離装置で分離された信号を処理して各移動局からのベースバンド信号の受信信号として出力する受信信号処理装置と、 A reception signal processing unit for outputting a reception signal of the second baseband signal by processing the separated signal separation device from the mobile stations,
    上記第1の電気/光変換器と上記第2の光/電気変換器とを接続する第1の光ファイバケーブルと、 A first optical fiber cable for connecting the first electrical / optical converter and the second optical / electrical converter,
    上記第1の光/電気変換器と上記第2の電気/光変換器とを接続する第2の光ファイバケーブルとを備え、 And a second optical fiber cable for connecting the first optical / electrical converter and the second electrical / optical converter,
    上記無線装置のそれぞれのアンテナと、 And each antenna of the radio device,
    そのアンテナに接続された送受共用器と、 A duplexer connected to the antenna,
    その送受共用器よりの無線受信信号を増幅し、対応する上記受信機へ出力する低雑音増幅器と、 A low noise amplifier amplifies the radio signal received from the duplexer, and outputs to the corresponding said receiver,
    上記各送信機よりの無線信号を増幅して対応する上記送受共用器へ出力する電力増幅器とを備え、 And a power amplifier output to said duplexer corresponding to amplify the radio signals from the respective transmitter,
    上記無線装置群の上記複数のアンテナはアレー状に配置されたアレーアンテナを構成していることを特徴とする無線装置。 The plurality of antennas of the radio apparatus group is radio apparatus, characterized in that constitute an array antenna arranged in an array.
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