JPH03109825A - Radio equipment - Google Patents
Radio equipmentInfo
- Publication number
- JPH03109825A JPH03109825A JP24644189A JP24644189A JPH03109825A JP H03109825 A JPH03109825 A JP H03109825A JP 24644189 A JP24644189 A JP 24644189A JP 24644189 A JP24644189 A JP 24644189A JP H03109825 A JPH03109825 A JP H03109825A
- Authority
- JP
- Japan
- Prior art keywords
- distortion
- channels
- channel
- distortion compensation
- frequency
- Prior art date
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 230000003321 amplification Effects 0.000 claims abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
Landscapes
- Amplifiers (AREA)
- Transmitters (AREA)
Abstract
Description
【発明の詳細な説明】
［産業」二の利用分野］
本発明は、周波数分割した複数の無線チャネルを共通増
幅する無線装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a wireless device that commonly amplifies a plurality of frequency-divided wireless channels.
［従来の技術］
周波数分割した複数の無線チャネルを共通増幅する無線
装置の従来技術を第２図に示す。この従来例において、
無線装置は送信機１−１〜１−ｎ、送信機の制御装置２
、増幅部３、方向性結合器４、相互変調歪検出部５、制
御部６、入力切り替えスイッチ７、ｆａ， ｆｉ）パイ
ロット発生器８、出力切り替えスイッチ９、及び終端器
１０から構成されており、送信機１−１〜１−ｎの複数
の無線チャネルを共通増幅して送信する。複数の無線チ
ャネル信号を共通増幅する増幅部３は、増幅器の非直線
特性から相互変調歪成分を発生する。この歪レベルは送
信チャネル数及び送信電力にほぼ自乗比例して増加し、
通信の最繁時に最大となる。従って相互変調歪成分を改
善するために歪補償回路が用いられている。ここでは、
プリデイスト−ジョン法による歪補償回路を用いた増幅
部の構成を第３図に示す。第３図でプリデイスト−ジョ
ン回路は電力分配器１１、遅延線１２、電力合成器１３
、歪発生器１４、可変移相器１５、可変減衰器１６から
構成されている。[Prior Art] FIG. 2 shows a conventional technology of a radio device that commonly amplifies a plurality of frequency-divided radio channels. In this conventional example,
The wireless devices include transmitters 1-1 to 1-n and a transmitter control device 2.
, an amplifier section 3, a directional coupler 4, an intermodulation distortion detection section 5, a control section 6, an input changeover switch 7, a pilot generator 8, an output changeover switch 9, and a terminator 10. , a plurality of radio channels of transmitters 1-1 to 1-n are commonly amplified and transmitted. The amplifier unit 3 that commonly amplifies a plurality of radio channel signals generates intermodulation distortion components from the nonlinear characteristics of the amplifier. This distortion level increases approximately in square proportion to the number of transmission channels and transmission power,
It reaches its maximum during the busiest time of communication. Therefore, distortion compensation circuits are used to improve intermodulation distortion components. here,
FIG. 3 shows the configuration of an amplifier section using a distortion compensation circuit based on the predistortion method. In Fig. 3, the predistortion circuit includes a power divider 11, a delay line 12, and a power combiner 13.
, a distortion generator 14, a variable phase shifter 15, and a variable attenuator 16.
このプリデイスト−ジョン回路は、増幅器１７で発生す
る歪成分と逆相かつ等レベルの歪を発生するので、互い
の歪成分は相殺されて相互変調歪成分を改善する。調整
方法はパイロット信号ｆａ、 ｆｂを増幅部３へ入力し
、２ｆａ−ｆｂ又は２ ｆｂ −ｆａの周波数に発生す
る歪量を測定し、可変移相器１５、可変減衰器１６を調
整し、歪レベルが規格値を越えた場合に制御する。この
制御はパイロット信号を用いるため、入力切り替えスイ
ッチ７、出力切り替えスイッチ９を切り替えることによ
り通信を中断して行う必要がある。又、この制御は温度
変化等により増幅部の特性が変動するため一日に数回行
う必要がある。Since this predistortion circuit generates distortion that is in opposite phase and at the same level as the distortion component generated by the amplifier 17, the distortion components cancel each other out and improve the intermodulation distortion component. The adjustment method is to input the pilot signals fa and fb to the amplifier section 3, measure the amount of distortion generated at the frequency of 2fa-fb or 2fb-fa, adjust the variable phase shifter 15 and variable attenuator 16, and adjust the distortion. Control is performed when the level exceeds the standard value. Since this control uses a pilot signal, it is necessary to interrupt communication by switching the input changeover switch 7 and the output changeover switch 9. Further, this control needs to be performed several times a day because the characteristics of the amplifying section vary due to temperature changes and the like.
［発明が解決しようとする課題］
以上説明したように従来の方法は歪補償調整用のパイロ
ット信号を設ける必要があるうえに、歪補償制御時には
通信を中断しなければならない欠点があった。[Problems to be Solved by the Invention] As explained above, the conventional method has the disadvantage that it is necessary to provide a pilot signal for distortion compensation adjustment, and communication must be interrupted during distortion compensation control.
本発明の目的は、増幅部の歪補償調整用のパイロット信
号を不要とし、通信状態での歪補償制御を可能とする無
線装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a wireless device that eliminates the need for a pilot signal for distortion compensation adjustment of an amplifier section and enables distortion compensation control during communication.
［課題を解決するための手段］
本発明によれば、上述の目的は前記特許請求の範囲に記
載した手段より達成される。[Means for Solving the Problems] According to the present invention, the above objects are achieved by the means described in the claims.
すなわち、本発明は、周波数分割した複数の無線チャネ
ルを用いる通信方式の無線局において使用され、複数の
無線チャネルを共通増幅し一
かつ複数の無線チャネルを共通増幅することにより発生
する相互変調歪を低減するための歪補償回路を具備した
増幅部と、複数の送信機及び制御装置から構成される装
置
御装置には、送信している送信機のチャネル数及びチャ
ネル番号から共通増幅部において発生する相互変調歪の
周波数を計算する手段と、送信を行っていないチャネル
で歪の発生するチャネルの出力をモニタする手段と、歪
量が規格値を越えた場合に歪補モニタする手段とを設け
、歪量が規格値を越えた場合に制御する無線装置である
。That is, the present invention is used in a radio station using a communication system that uses a plurality of frequency-divided radio channels, and is capable of commonly amplifying a plurality of radio channels and eliminating intermodulation distortion caused by common amplification of one or more radio channels. The equipment control device consists of an amplifier section equipped with a distortion compensation circuit for reducing distortion, and a plurality of transmitters and control devices. A means for calculating the frequency of intermodulation distortion, a means for monitoring the output of a channel in which distortion occurs in a channel that is not transmitting, and a means for performing distortion compensation monitoring when the amount of distortion exceeds a standard value, This is a wireless device that controls when the amount of distortion exceeds a standard value.
［作用］
本発明の無線装置では、現在送信している送信機のチャ
ネル数及びチャネル番号から、共通増幅部での相互変調
歪の生じる周波数を計算し、該周波数が相当し、かつ送
信を行っていないチャネルで、歪の発生するチャネルの
出力をモニタし、該モニタ結果により、温度変化等によ
り歪量が予め定めた所定の規格値を越えた場合には、増
幅部中の歪補モニタし歪補償を行うものである。[Operation] The radio device of the present invention calculates the frequency at which intermodulation distortion occurs in the common amplifier section from the number of channels and channel number of the transmitter currently transmitting, and determines whether the frequency corresponds and is not transmitting. Monitor the output of channels where distortion occurs, and if the monitoring results show that the amount of distortion exceeds a predetermined standard value due to temperature changes, etc., perform distortion compensation monitoring in the amplifier section. It performs distortion compensation.
すなわち、従来の無線装置における増幅部の歪制御は、
調整用パイロット信号を用いるため通信を中断して行う
のに対し、本発明は無線装置を通信状態においたまま送
信中チャネルとそのチャネル数及びチャネル番号の情報
から歪補償制御を行う点が異なる。In other words, distortion control of the amplifier section in conventional wireless equipment is as follows:
The present invention differs in that distortion compensation control is performed by interrupting communication to use an adjustment pilot signal, while the present invention performs distortion compensation control based on information about the currently transmitting channel, the number of channels, and the channel number while the wireless device is in the communication state.
［実施例］ 第１図は本発明の一実施例の装置構成図である。[Example] FIG. 1 is a diagram showing the configuration of an apparatus according to an embodiment of the present invention.
第１図において、送信機１−１〜１−ｎ、増幅部３、方
向性結合器４、相互変調歪成分５は第２図に示した従来
のものと同様であり、また従来の装置に必要であった制
御部６、入力切り替えスイッチ７、ｆａ，ｆｂパイロッ
ト発生器８、出力切り替えスイッチ９及び終端器１０が
省略されている。In FIG. 1, transmitters 1-1 to 1-n, an amplifying section 3, a directional coupler 4, and an intermodulation distortion component 5 are the same as those of the conventional device shown in FIG. The necessary control unit 6, input changeover switch 7, fa, fb pilot generator 8, output changeover switch 9, and terminator 10 are omitted.
この実施例の構成において、送信機１−１〜１−ｎの送
信信号は増幅部３で共通増幅される。In the configuration of this embodiment, the transmission signals of the transmitters 1-1 to 1-n are commonly amplified by the amplifier section 3.
一方、送信機の制御装置２では送信中のチャネル数とチ
ャネル番号から、共通増幅において任意の２波及び３波
（各波の周波数をＡ、Ｂ、Ｃとする）の組合せで発生す
る（２Ａ−Ｂ）、（Ａ−１−Ｂ−Ｃ）形の相互変調調整
の周波数を計算し、該周波数が相当し、かつ送信を行っ
ていないチャネルで、歪の発生するチャネルの出力を相
互変調歪検出部５を通してモニタしている。通信中チャ
ネルの増加あるいは温度変化等により増幅部の特性が変
動して規格値を越えた歪を検出すると、送信機の制御装
置２は従来技術と同様に歪レベルが規格値を越えた場合
に増幅部３を調整制御する
この構成の特徴は、第２図の従来例と比較して明らかな
ように入出力スイッチが不要なので系が高信頼性となる
こと、及び系が通信状態のままでは増幅部の歪補償制御
が可能なことにある。On the other hand, the control device 2 of the transmitter generates arbitrary combinations of 2 waves and 3 waves (the frequencies of each wave are A, B, and C) in the common amplification based on the number of channels being transmitted and the channel number (2A -B), (A-1-B-C) type intermodulation adjustment frequency is calculated, and the output of the channel where the distortion occurs is adjusted to the intermodulation distortion on the channel that corresponds to the frequency and is not transmitting. It is monitored through the detection unit 5. When the characteristics of the amplifying section change due to an increase in the number of communication channels or a change in temperature, and distortion exceeding the standard value is detected, the control device 2 of the transmitter detects the distortion level exceeding the standard value, as in the conventional technology. The features of this configuration for adjusting and controlling the amplifier section 3 are that, as is clear from the conventional example shown in FIG. The advantage is that distortion compensation control of the amplifier section is possible.
［発明の効果］
以上説明したように、本発明は周波数分割した複数の無
線チャネルを共通増幅する無線装置において、送信中の
チャネル数及びチャネル番号から共通増幅において発生
する相互変調歪の周波数を計算し、送信を行っていない
チャネルで歪の発生するチャネルの出力をモニタし、歪
量が規格値を越えた場合に歪み補モニタすることにより
、従来技術で必要としていた増幅部の歪補償調整用パイ
ロット信号を不要とした。この装置構成の利点は、歪調
整用のパイロット信号を使用しないので入出力切り替え
スイッチが不要となり、系が高信頼性となること、及び
増幅部の歪補償制御時に通信を中断しないのでサービス
性を向上する利点がある。[Effects of the Invention] As explained above, the present invention calculates the frequency of intermodulation distortion occurring in common amplification from the number of channels being transmitted and the channel number in a wireless device that commonly amplifies a plurality of frequency-divided radio channels. By monitoring the output of channels where distortion occurs on channels that are not transmitting, and performing distortion correction monitoring when the amount of distortion exceeds the standard value, it is possible to adjust the distortion compensation of the amplifier section, which was required with conventional technology. Eliminates the need for pilot signals. The advantages of this device configuration are that it does not use a pilot signal for distortion adjustment, eliminating the need for an input/output switch, making the system highly reliable, and that it does not interrupt communication during distortion compensation control of the amplifier, improving serviceability. There are advantages to improving.
第１図は本発明の一実施例の装置構成図、第２図は従来
の無線装置構成図、第３図はブリデイスト−ジョン回路
を用いた増幅部の構成図である。
１−１〜］、−ｎ・旧・・送信機、２・・・・・・送信
機の制御装置、３・・・・・増幅部、４・旧・・方向性
結合器、５・・・・・・相互変調検出部、６・・日・・
制御部、７・・・・・・入力切り替えスイッチ、８・・
・・・・ｆａ、ｆｂパイロット発生器、９・・・・・・
出カ切り替えスイッチ、１０・・・・・・終端器、１１
・・・・・・電力分配器、１２・・・・・遅延線、１３
・・・・・・電力合成器、１４・旧・歪発生器、１５・
・・・・・可変移相器、１６・旧・・可変減衰器、１７
・・・・・・増幅器FIG. 1 is a block diagram of a device according to an embodiment of the present invention, FIG. 2 is a block diagram of a conventional wireless device, and FIG. 3 is a block diagram of an amplifier section using a hybrid distortion circuit. 1-1~], -n old... transmitter, 2... transmitter control device, 3... amplifying section, 4... old directional coupler, 5... ...Intermodulation detection section, 6...day...
Control unit, 7...Input changeover switch, 8...
...fa, fb pilot generator, 9...
Output selector switch, 10...Terminator, 11
...Power divider, 12 ...Delay line, 13
・・・・・・Power combiner, 14・Old・Distortion generator, 15・
...Variable phase shifter, 16 Old...Variable attenuator, 17
······amplifier
Claims (1)
無線局において使用され、複数の無線チャネルを共通増
幅し、かつ複数の無線チャネルを共通増幅することによ
り発生する相互変調歪を低減するための歪補償回路を具
備した増幅部と、複数の送信機及び制御装置から構成さ
れる無線装置において、制御装置には、送信している送
信機のチャネル数及びチャネル番号から共通増幅部にお
いて発生する相互変調歪の周波数を計算する手段と、送
信を行っていないチャネルで歪の発生するチャネルの出
力をモニタする手段と、歪量が規格値を越えた場合に歪
補償回路を制御する手段とを設け、歪量が規格値以下と
なるように制御することを特徴とする無線装置。Distortion compensation used in wireless stations with communication systems that use multiple frequency-divided wireless channels to commonly amplify multiple wireless channels and reduce intermodulation distortion that occurs due to common amplification of multiple wireless channels. In a wireless device consisting of an amplifier section equipped with a circuit, a plurality of transmitters, and a control device, the control device can detect intermodulation distortion generated in the common amplifier section based on the number of channels and channel numbers of the transmitter that is transmitting. A means for calculating the frequency of the distortion, a means for monitoring the output of a channel where distortion occurs among channels that are not transmitting, and a means for controlling the distortion compensation circuit when the amount of distortion exceeds the standard value are provided. A wireless device characterized by controlling the amount so that the amount is below a standard value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24644189A JPH03109825A (en) | 1989-09-25 | 1989-09-25 | Radio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24644189A JPH03109825A (en) | 1989-09-25 | 1989-09-25 | Radio equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03109825A true JPH03109825A (en) | 1991-05-09 |
Family
ID=17148505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24644189A Pending JPH03109825A (en) | 1989-09-25 | 1989-09-25 | Radio equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03109825A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5528088A (en) * | 1994-06-27 | 1996-06-18 | Amphenol Corporation | Current mode coupler with improved grounding |
| US5574980A (en) * | 1993-06-24 | 1996-11-12 | Nec Corporation | Communication base station system for transmitting data to a movable body |
| JP2007013230A (en) * | 2005-06-28 | 2007-01-18 | Nippon Dengyo Kosaku Co Ltd | Distortion compensation amplifier circuit |
-
1989
- 1989-09-25 JP JP24644189A patent/JPH03109825A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5574980A (en) * | 1993-06-24 | 1996-11-12 | Nec Corporation | Communication base station system for transmitting data to a movable body |
| US5528088A (en) * | 1994-06-27 | 1996-06-18 | Amphenol Corporation | Current mode coupler with improved grounding |
| JP2007013230A (en) * | 2005-06-28 | 2007-01-18 | Nippon Dengyo Kosaku Co Ltd | Distortion compensation amplifier circuit |
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