JPH05219007A - Cross-polarized wave interference removal device - Google Patents
Cross-polarized wave interference removal deviceInfo
- Publication number
- JPH05219007A JPH05219007A JP1803792A JP1803792A JPH05219007A JP H05219007 A JPH05219007 A JP H05219007A JP 1803792 A JP1803792 A JP 1803792A JP 1803792 A JP1803792 A JP 1803792A JP H05219007 A JPH05219007 A JP H05219007A
- Authority
- JP
- Japan
- Prior art keywords
- cross
- polarization interference
- polarized wave
- signal
- polarization
- 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.)
- Withdrawn
Links
Landscapes
- Noise Elimination (AREA)
- Radio Transmission System (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ディジタル無線伝送回
線におけるＶ偏波とＨ偏波からなる同一周波数の直交偏
波を用いた信号伝送時に互いに他の偏波に混入する偏波
間干渉を除去する交差偏波干渉除去装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention eliminates cross-polarization interference mixed with other polarized waves during signal transmission using orthogonal polarized waves of the same frequency composed of V polarized waves and H polarized waves in a digital radio transmission line. Cross polarization interference canceller.
【０００２】[0002]
【従来の技術】従来、この種の交差偏波干渉除去装置
は、図２に示すように、送信側にベースバンド信号１０
１でディジタル変調された変調器１の出力信号はアンテ
ナ１１のＶ偏波に供給され、ベースバンド信号１０２で
変調された変調器２の出力信号はアンテナ１１のＨ偏波
に供給される。この両偏波信号は受信側のアンテナ１２
のそれぞれＶ偏波、Ｈ偏波で受信される。図２ではＶ偏
波信号１２０Ｂが交差偏波間干渉補償器６を経由して復
調器３でベースバンド信号１０３を復調し出力する。一
方Ｈ偏波信号１２０Ａは直接復調器４に入力されベース
バンド信号１０４を復調し出力する。2. Description of the Related Art Conventionally, as shown in FIG. 2, a cross polarization interference canceller of this type has a baseband signal 10 on the transmitting side.
The output signal of the modulator 1 digitally modulated by 1 is supplied to the V polarization of the antenna 11, and the output signal of the modulator 2 modulated by the baseband signal 102 is supplied to the H polarization of the antenna 11. These both polarization signals are received by the antenna 12 on the receiving side.
Are respectively received by V polarization and H polarization. In FIG. 2, the V-polarized signal 120B passes through the cross polarization interference canceller 6 and is demodulated by the demodulator 3 to output the baseband signal 103. On the other hand, the H polarization signal 120A is directly input to the demodulator 4 and demodulates the baseband signal 104 to output it.
【０００３】ここで伝送路で発生するフェージング等に
よりＨ偏波信号１２０ＡがＶ偏波信号１２０Ｂに偏波干
渉してからＨからＶ変換された干渉信号が混入した場合
を想定する。このＨ偏波の干渉信号成分はフェージング
がない場合のＶ偏波信号に対してＶ変換された干渉信号
が同相又は逆相に加わって、復調器３からノーフェージ
ング時に対して誤差信号１０５として検出される。制御
器５は復調器３から出力されるこの誤差信号１０５と、
もとのベースバンド信号１０４とを入力して相関比率を
とり、Ｖ側信号に干渉しているＨ側信号成分を抽出して
制御信号１０６として出力する。この制御信号１０６が
重み付け器７に入力され、干渉しているＨ側信号成分を
打ち消すようにもとのＨ偏波信号１２０Ａを重み付け
し、逆相にして合成器６Ａに入力して干渉波を除去して
いた。Here, it is assumed that the H-polarized signal 120A undergoes polarization interference with the V-polarized signal 120B due to fading or the like occurring in the transmission line, and then an interference signal converted from H to V is mixed. The interference signal component of the H-polarized wave is added as an in-phase or anti-phase interference signal to the V-polarized signal when there is no fading, and is detected as an error signal 105 from the demodulator 3 during no fading. To be done. The controller 5 outputs the error signal 105 output from the demodulator 3,
The original baseband signal 104 is input to obtain the correlation ratio, and the H-side signal component interfering with the V-side signal is extracted and output as the control signal 106. The control signal 106 is input to the weighter 7, and the original H-polarized signal 120A is weighted so as to cancel the interfering H-side signal component, and the opposite-phase signal is input to the combiner 6A to generate an interference wave. Had been removed.
【０００４】[0004]
【発明が解決しようとする課題】従来の交差偏波干渉除
去装置では、伝送路で発生するフェージング等による交
差偏波間干渉だけでなく、アンテナにおける交差偏波間
識別度の劣化等の機器固有の交差偏波間干渉をも補償し
ていたので、伝送路で発生するフェージング等による交
差偏波間干渉の改善度を逆に劣化させる欠点がある。ま
た、アンテナにおける交差偏波間の識別度を改善するた
めには、アンテナのＶＨ偏波用１次ホーンの配置等を精
度よく調整する必要がある。また、周波数をインターリ
ーブ配置にて使用していた装置に、さらに、直交偏波伝
送の追加を考えた場合など複雑な構成となり、多大の費
用が必要となる難点がある。In the conventional cross polarization interference canceling apparatus, not only the cross polarization interference due to fading or the like occurring in the transmission line but also the crossing peculiar to the device such as deterioration of the cross polarization identification degree in the antenna is caused. Since the polarization interference is also compensated, there is a drawback that the degree of improvement of cross polarization interference due to fading or the like occurring in the transmission line is deteriorated. Further, in order to improve the degree of discrimination between cross polarized waves in the antenna, it is necessary to accurately adjust the arrangement of the VH polarized primary horn of the antenna. In addition, there is a problem in that a device having a frequency used in an interleaved arrangement has a complicated structure such as a case of considering addition of orthogonal polarization transmission, and a large amount of cost is required.
【０００５】[0005]
【課題を解決するための手段】本発明の交差偏波干渉除
去装置は、同一周波数で互いに直交するＶ偏波とＨ偏波
とを用いて信号を伝送するディジタル無線伝送回線の交
差偏波干渉除去装置において、送信側に機器固有の交差
偏波間干渉を除去する交差偏波間干渉付加器を有し、受
信側に伝送路で発生するフェージング等による交差偏波
間干渉を補償する交差偏波間干渉補償器を有する。A cross polarization interference canceling apparatus of the present invention is a cross polarization interference of a digital radio transmission line for transmitting a signal using V polarization and H polarization orthogonal to each other at the same frequency. Cross-polarization interference adder that removes the cross-polarization interference unique to the equipment on the transmission side in the removal device, and cross-polarization interference compensation that compensates for cross-polarization interference due to fading that occurs in the transmission line on the reception side Have a vessel.
【０００６】[0006]
【実施例】本発明について図面を参照して説明する。図
１は、本発明の一実施例のブロック図である。図１にお
いて、図２の従来例と同一の符号は同一の構成と機能を
有する。すなわち、本実施例では送信側に機器（主とし
てアンテナ）固有の偏波干渉を除去する交差偏波間干渉
付加器８を設け、受信側に制御器５の出力を自局の重み
付け器７又は受信側のメモリ１０に帰還するスイッチ１
３を追加している。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. 1, the same reference numerals as those in the conventional example of FIG. 2 have the same configurations and functions. That is, in this embodiment, a cross polarization interference adder 8 for removing polarization interference peculiar to a device (mainly an antenna) is provided on the transmission side, and the output of the controller 5 is provided on the reception side by the weighting device 7 of the own station or the reception side. Switch 1 that returns to memory 10
3 is added.
【０００７】次に本実施例の動作を説明する。Next, the operation of this embodiment will be described.
【０００８】まず、伝送路がノーフェージングで無歪状
態である時に、スイッチ１３により、制御器５の出力で
ある制御信号１０６を送信側に送出する。送信側の交差
偏波間干渉付加器８では、帰還用制御信号１０６Ａを受
け、メモリ１０を経由して重み付け器９で、Ｖ側信号に
干渉しているＨ側信号成分と等量のＨ側信号を生成し、
逆特性の信号を合成することにより、伝送路が無歪状態
の時の交差偏波間干渉すなわち、機器固有の交差偏波間
干渉を除去出来る。機器固有の交差偏波間干渉は一定で
あるため、制御器５からの帰還用制御信号１０６Ａは、
メモリ１０に蓄積され、常時、機器固有の交差偏波間干
渉を除去する。その後にスイッチ１３を切り換えて制御
信号１０６を受信側の交差偏波間干渉補償器６に送出
し、従来と同様に伝送路で発生するフェージング等によ
る交差偏波間干渉を補償する。First, when the transmission line is in the no-fading and distortion-free state, the switch 13 sends the control signal 106 output from the controller 5 to the transmitting side. In the cross polarization interference adder 8 on the transmission side, the feedback control signal 106A is received, and the weighting device 9 passes through the memory 10 and the H side signal having the same amount as the H side signal component interfering with the V side signal. Produces
By synthesizing signals having opposite characteristics, cross-polarization interference when the transmission path is in a distortion-free state, that is, cross-polarization interference unique to the device can be removed. Since the cross polarization interference unique to the device is constant, the feedback control signal 106A from the controller 5 is
The cross polarization interference that is accumulated in the memory 10 and is unique to the device is always removed. After that, the switch 13 is switched to send the control signal 106 to the cross-polarization interference compensator 6 on the receiving side to compensate the cross-polarization interference due to fading or the like which occurs in the transmission line as in the conventional case.
【０００９】[0009]
【発明の効果】以上説明したように本発明は、送信側に
おいて、交差偏波間干渉付加器を備えて機器固有の交差
偏波間干渉を除去することにより、伝送路で発生するフ
ェージング等による交差偏波間干渉の改善度を向上でき
る効果がある。As described above, according to the present invention, the transmitting side is provided with the cross polarization interference adder to eliminate the cross polarization interference unique to the equipment, and thus cross polarization due to fading or the like generated in the transmission path is eliminated. This has the effect of increasing the degree of improvement in inter-wave interference.
【図１】本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】従来の交差偏波干渉補償装置のブロック図であ
る。FIG. 2 is a block diagram of a conventional cross polarization interference canceller.
１，２ 変調器 ３，４ 復調器 ５ 制御器 ６ 交差偏波間干渉補償器 ７，９ 重み付け器 ８ 交差偏波間干渉付加器 １０ メモリ １１，１２ アンテナ １３ スイッチ 1, 2 Modulator 3, 4 Demodulator 5 Controller 6 Cross-polarization interference compensator 7, 9 Weighter 8 Cross-polarization interference adder 10 Memory 11, 12 Antenna 13 Switch
Claims (2)
偏波とを用いて信号を伝送するディジタル無線伝送回線
の交差偏波干渉除去装置において、送信側に機器固有の
交差偏波間干渉を除去する交差偏波間干渉付加器を有
し、受信側に伝送路で発生するフェージング等による交
差偏波間干渉を補償する交差偏波間干渉補償器を有する
ことを特徴とする交差偏波干渉除去装置。1. A V-polarized wave and an H-wave having the same frequency and orthogonal to each other.
In a cross-polarization interference canceller for a digital wireless transmission line that transmits signals using polarized waves, a cross-polarization interference adder that removes cross-polarization interference unique to the equipment is provided on the transmission side, and transmission is performed on the reception side. A cross-polarization interference canceller having a cross-polarization interference compensator for compensating cross-polarization interference due to fading or the like generated in a road.
Ｈ（又はＶ）偏波成分を抽出して補償器に対応する制御
信号を出力する制御器と、前記制御信号を前記交差偏波
間干渉補償器に接続するか又は送信側の交差偏波間干渉
付加器に対する帰還制御信号側に接続するかを切り換え
るスイッチとを有し、送信側の前記交差偏波間干渉付加
器に前記帰還制御信号を記憶するメモリと、このメモリ
の情報により重み付け信号を生成する重み付け器とを有
することを特徴とする請求項１記載の交差偏波干渉除去
装置。2. A controller that extracts an H (or V) polarization component that interferes with the V (or H) polarization side on the receiving side and outputs a control signal corresponding to the compensator; And a switch for switching between connection to the cross polarization interference canceller or feedback control signal side for the cross polarization interference adder on the transmission side, and the feedback to the cross polarization interference adder on the transmission side. 2. The cross polarization interference canceller according to claim 1, further comprising a memory for storing the control signal and a weighter for generating a weighted signal based on the information in the memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1803792A JPH05219007A (en) | 1992-02-04 | 1992-02-04 | Cross-polarized wave interference removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1803792A JPH05219007A (en) | 1992-02-04 | 1992-02-04 | Cross-polarized wave interference removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05219007A true JPH05219007A (en) | 1993-08-27 |
Family
ID=11960481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1803792A Withdrawn JPH05219007A (en) | 1992-02-04 | 1992-02-04 | Cross-polarized wave interference removal device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05219007A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6104356A (en) * | 1995-08-25 | 2000-08-15 | Uniden Corporation | Diversity antenna circuit |
| WO2007046427A1 (en) * | 2005-10-20 | 2007-04-26 | Nec Corporation | Cross polarization interference compensating method, and cross polarization interference compensating device |
| JP2012029132A (en) * | 2010-07-26 | 2012-02-09 | Nec Corp | Cross polarization interference compensator |
| JP2013514685A (en) * | 2009-12-16 | 2013-04-25 | テレフオンアクチーボラゲット エル エム エリクソン（パブル） | Method and arrangement for adjusting polarization in a wireless communication system |
-
1992
- 1992-02-04 JP JP1803792A patent/JPH05219007A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6104356A (en) * | 1995-08-25 | 2000-08-15 | Uniden Corporation | Diversity antenna circuit |
| WO2007046427A1 (en) * | 2005-10-20 | 2007-04-26 | Nec Corporation | Cross polarization interference compensating method, and cross polarization interference compensating device |
| JPWO2007046427A1 (en) * | 2005-10-20 | 2009-04-23 | 日本電気株式会社 | Cross-polarization interference compensation method and cross-polarization interference compensation apparatus |
| JP4573056B2 (en) * | 2005-10-20 | 2010-11-04 | 日本電気株式会社 | Cross-polarization interference compensation method and cross-polarization interference compensation apparatus |
| US7925236B2 (en) | 2005-10-20 | 2011-04-12 | Nec Corporation | Cross polarization interference canceling method and cross polarization interference canceling apparatus |
| JP2013514685A (en) * | 2009-12-16 | 2013-04-25 | テレフオンアクチーボラゲット エル エム エリクソン（パブル） | Method and arrangement for adjusting polarization in a wireless communication system |
| JP2012029132A (en) * | 2010-07-26 | 2012-02-09 | Nec Corp | Cross polarization interference compensator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990518 |