JP2017028602A - Interference wave elimination device - Google Patents

Interference wave elimination device Download PDF

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JP2017028602A
JP2017028602A JP2015147497A JP2015147497A JP2017028602A JP 2017028602 A JP2017028602 A JP 2017028602A JP 2015147497 A JP2015147497 A JP 2015147497A JP 2015147497 A JP2015147497 A JP 2015147497A JP 2017028602 A JP2017028602 A JP 2017028602A
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interference wave
band
interference
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removal
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JP6653531B2 (en
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光博 ▲たか▼島
光博 ▲たか▼島
Mitsuhiro Takashima
洋一 串岡
Yoichi Kushioka
洋一 串岡
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Hitachi Kokusai Electric Inc
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Abstract

PROBLEM TO BE SOLVED: To enhance the interference wave elimination performance, by enhancing the interference wave detection accuracy.SOLUTION: An interference wave elimination device 10 has two interference wave elimination bandpass filters 11, 17, two interference wave detection bandpass filters 12, 18, a delay section 13 and an interference wave eliminating section 16, an interference wave detector 14, and an interference wave replica generating section 15. The first interference wave elimination bandpass filter 11 passes a reception signal of a predetermined band. The delay section 13 delays a signal outputted from the first interference wave elimination bandpass filter 11 by a predetermined time. The interference wave detector 14 detects the interference wave from a reception signal that has passed a predetermined band by the first interference wave elimination bandpass filter 12, and a reference signal that has passed a predetermined band by the second interference wave detection bandpass filter 18.SELECTED DRAWING: Figure 1

Description

本発明は、無線通信システムにおける受信装置に関し、特に受信装置にて受信した信号に含まれる干渉波信号を除去する干渉波除去装置に関するものである。   The present invention relates to a receiving apparatus in a wireless communication system, and more particularly to an interference wave removing apparatus that removes an interference wave signal included in a signal received by the receiving apparatus.

従来の無線通信システムにおいて、所望の信号に対して他のシステムの信号が干渉波信号となり、通信環境が劣化する場合がある。
図２は従来の干渉波除去装置を説明するためのブロック図である。
図２において、干渉波除去装置２０は、バンドパスフィルタ２１，２２、遅延部１３、干渉波検出部１４、干渉波レプリカ生成部１５、干渉波除去部１６で構成されている。
図３は１つの干渉源から発生する周波数方向に複数連なる干渉波を示す図である。図４は従来のバンドパスフィルタの周波数と通過帯域を示す図である。図５は従来の干渉波の検出を誤ることがあるバンドパスフィルタと干渉波の位置を示す図である。図６はバンドパスフィルタにより通信帯域の一部を通過しないことを示す図である。 In a conventional wireless communication system, a signal of another system may become an interference wave signal with respect to a desired signal, and the communication environment may deteriorate.
FIG. 2 is a block diagram for explaining a conventional interference wave removing apparatus.
In FIG. 2, the interference wave removal apparatus 20 includes bandpass filters 21 and 22, a delay unit 13, an interference wave detection unit 14, an interference wave replica generation unit 15, and an interference wave removal unit 16.
FIG. 3 is a diagram showing a plurality of interference waves generated from one interference source in the frequency direction. FIG. 4 is a diagram showing the frequency and passband of a conventional bandpass filter. FIG. 5 is a diagram showing a band-pass filter that may erroneously detect a conventional interference wave and the position of the interference wave. FIG. 6 is a diagram showing that a part of the communication band is not passed by the band pass filter.

干渉波は、１つの干渉源から図３のように周波数方向に複数の干渉波が連なる場合や、単独の干渉波の場合がある。
干渉波除去装置は、図３のような干渉波を受信した場合、図４のように基地局及び通信端末が通信する帯域（通信帯域）をカバーするようにバンドパスフィルタ２１内の干渉波を除去する。
従来の干渉波除去装置２０は、図４のようにバンドパスフィルタ２１に１つの干渉波がある場合は、問題ないが、図５のように通信帯域とバンドパスフィルタ１１に周波数軸上に連なる２つの干渉波がある場合は、干渉波検出部１４において、わずかに受信している干渉波Ａの影響により干渉波の検出が誤ることがある。
干渉波の検出が誤ると正しい干渉波レプリカ信号が生成できずに干渉波の除去性能が劣化することがある。
また、干渉波Ａを受信しないようにバンドパスフィルタ２１を図６のようにするとバンドパスフィルタ２１が通信帯域の一部を通過させないために通信品質が劣化する。 There are cases where a plurality of interference waves are connected in the frequency direction from one interference source in the frequency direction as shown in FIG.
When the interference wave removing apparatus receives the interference wave as shown in FIG. 3, the interference wave removal apparatus removes the interference wave in the band pass filter 21 so as to cover the band (communication band) in which the base station and the communication terminal communicate as shown in FIG. Remove.
The conventional interference wave removal apparatus 20 is not problematic when there is one interference wave in the bandpass filter 21 as shown in FIG. 4, but is connected to the communication band and the bandpass filter 11 on the frequency axis as shown in FIG. When there are two interference waves, the interference wave detection unit 14 may erroneously detect the interference wave due to the influence of the slightly received interference wave A.
If the interference wave is detected incorrectly, a correct interference wave replica signal cannot be generated, and the interference wave removal performance may deteriorate.
Further, if the bandpass filter 21 is configured as shown in FIG. 6 so as not to receive the interference wave A, the communication quality deteriorates because the bandpass filter 21 does not pass a part of the communication band.

先行技術文献としては、例えば、特許文献１に、回り込み波をキャンセルする際、アナログ波やマルチパスの混入が避けられない環境においても、ＦＦＴ窓位置ずれの影響が高精度で除去できる発明が開示されている。   As a prior art document, for example, Patent Document 1 discloses an invention capable of removing the influence of FFT window position deviation with high accuracy even in an environment where analog waves and multipaths cannot be avoided when canceling a sneak wave. Has been.

特開２００９−２７２７６７号公報JP 2009-272767 A

図５に示すように、通信帯域とバンドパスフィルタ２１内に周波数軸上に連なる２つの干渉波がある場合は、干渉波検出部１４において、干渉波Ａの一部を受信した影響により干渉波信号の検出誤りを発生させることがあり、干渉波の除去性能が劣化する問題がある。
本発明の目的は、干渉波の検出精度を向上させることにより、干渉波の除去性能を向上させることである。 As shown in FIG. 5, when there are two interference waves connected on the frequency axis in the communication band and the band pass filter 21, the interference wave detection unit 14 causes the interference wave due to the influence of receiving a part of the interference wave A. There is a problem that a signal detection error may occur, and the interference wave removal performance deteriorates.
An object of the present invention is to improve interference wave removal performance by improving interference wave detection accuracy.

本発明の干渉波除去装置は、２つの干渉波除去用バンドパスフィルタと２つの干渉波検出用バンドパスフィルタと遅延部と干渉波除去部と干渉波検出部と干渉波レプリカ生成部とを有し、第１の干渉波除去用バンドパスフィルタは所定帯域の受信信号を通過させ、遅延部は第１の干渉波除去用バンドパスフィルタから出力された信号を所定時間遅延させ、干渉波検出部は第１の干渉波検出用バンドパスフィルタで所定帯域を通過させた受信信号と第２の干渉波検出用バンドパスフィルタで所定帯域を通過させたレファレンス信号から干渉波を検出し、干渉波レプリカ生成部は第２の干渉波除去用バンドパスフィルタで所定帯域を通過させたレファレンス信号と前記干渉波検出部から出力された干渉波検出情報から干渉波レプリカを生成し、干渉波除去部は遅延部から出力された信号から干渉波レプリカ生成部で生成した干渉波レプリカを用いて干渉波を除去することを特徴とする。   The interference wave removal apparatus of the present invention has two interference wave removal bandpass filters, two interference wave detection bandpass filters, a delay unit, an interference wave removal unit, an interference wave detection unit, and an interference wave replica generation unit. The first interference wave removal band-pass filter passes a reception signal in a predetermined band, and the delay unit delays the signal output from the first interference wave removal band-pass filter by a predetermined time, and the interference wave detection unit Detects an interference wave from the received signal that has passed through the predetermined band by the first band-pass filter for interference wave detection and the reference signal that has passed through the predetermined band by the second band-pass filter for interference wave detection. The generation unit generates an interference wave replica from the reference signal that has passed through the predetermined band by the second interference wave removal bandpass filter and the interference wave detection information output from the interference wave detection unit. Wave removal unit and removing the interference wave by using the interference wave replica generated by the interference wave replica generation unit from the signal output from the delay unit.

また、本発明の干渉波除去装置は、２つの干渉波除去用バンドパスフィルタと干渉波検出用バンドパスフィルタと遅延部と干渉波除去部と干渉波検出部と干渉波レプリカ生成部とを有し、第１の干渉波除去用バンドパスフィルタは所定帯域の受信信号を通過させ、遅延部は第１の干渉波除去用バンドパスフィルタから出力された信号を所定時間遅延させ、干渉波検出部は第１の干渉波除去用バンドパスフィルタで所定帯域を通過させた受信信号と干渉波検出用バンドパスフィルタで所定帯域を通過させたレファレンス信号から干渉波を検出し、干渉波レプリカ生成部は第２の干渉波除去用バンドパスフィルタで所定帯域を通過させたレファレンス信号と干渉波検出部から出力された干渉波検出情報から干渉波レプリカを生成し、干渉波除去部は遅延部から出力された信号から干渉波レプリカ生成部で生成した干渉波レプリカを用いて干渉波を除去することを特徴とする。   The interference wave canceling apparatus of the present invention includes two interference wave removing bandpass filters, an interference wave detecting bandpass filter, a delay unit, an interference wave removing unit, an interference wave detecting unit, and an interference wave replica generating unit. The first interference wave removal band-pass filter passes a reception signal in a predetermined band, and the delay unit delays the signal output from the first interference wave removal band-pass filter by a predetermined time, and the interference wave detection unit Detects an interference wave from a received signal that has passed a predetermined band by the first band-pass filter for interference wave removal and a reference signal that has passed the predetermined band by the band-pass filter for interference wave detection. An interference wave replica is generated from the reference signal that has passed through the predetermined band by the second interference wave removal bandpass filter and the interference wave detection information output from the interference wave detection unit, and the interference wave removal unit And removing the interference wave by using the interference wave replica generated by the interference wave replica generating unit from a signal output from the delay unit.

さらに、本発明の干渉波除去装置は、上記の干渉波除去装置であって、第1及び第２の干渉波検出用バンドパスフィルタは干渉波に合わせて通過帯域を設定することを特徴とする。   Furthermore, an interference wave canceling apparatus according to the present invention is the above-described interference wave canceling apparatus, wherein the first and second interference wave detecting bandpass filters set a pass band in accordance with the interference wave. .

本発明によれば、干渉波の検出精度を向上させることにより、干渉波の除去性能が向上できる。   According to the present invention, the interference wave removal performance can be improved by improving the detection accuracy of the interference wave.

本発明の一実施例に係る干渉波除去装置を説明するためのブロック図である。It is a block diagram for demonstrating the interference wave removal apparatus which concerns on one Example of this invention. 従来の干渉波除去装置を説明するためのブロック図である。It is a block diagram for demonstrating the conventional interference wave removal apparatus. １つの干渉源から発生する周波数方向に複数連なる干渉波を示す図である。It is a figure which shows the interference wave which continues in multiple in the frequency direction generate | occur | produced from one interference source. 従来のバンドパスフィルタの周波数と通過帯域を示す図である。It is a figure which shows the frequency and pass band of the conventional band pass filter. 従来の干渉波の検出を誤ることがあるバンドパスフィルタと干渉波の位置を示す図である。It is a figure which shows the position of the bandpass filter and interference wave which may detect the conventional interference wave erroneously. バンドパスフィルタにより通信帯域の一部を通過しないことを示す図である。It is a figure which shows not passing a part of communication band by a band pass filter. 本発明の一実施例に係る干渉波除去装置の各バンドパスフィルタの周波数と帯域の設定を示す図である。It is a figure which shows the setting of the frequency and band of each band pass filter of the interference wave removal apparatus which concerns on one Example of this invention. 干渉波除去用バンドパスフィルタの設定を示す図である。It is a figure which shows the setting of the band pass filter for interference wave removal. 干渉波除去用バンドパスフィルタが周波数軸上に複数連なる干渉波を受信していることを示す図である。It is a figure which shows that the bandpass filter for interference wave removal has received the interference wave which continues in multiple numbers on a frequency axis. 干渉波検出用バンドパスフィルタの設定を示す図である。It is a figure which shows the setting of the band pass filter for interference wave detection. 通信帯域が周波数軸上に複数連なる干渉波を受信した時の干渉波検出用バンドパスフィルタの設定を示す図である。It is a figure which shows the setting of the band-pass filter for interference wave detection when a communication band receives the interference wave which continues in multiple on a frequency axis. 本発明の一実施例に係る干渉波除去装置の受信信号とレファレンス信号の干渉波検出用バンドパスフィルタが異なる周波数及び帯域を設定したことを示す図である。It is a figure which shows that the frequency and the band from which the interference wave detection band-pass filter of the received signal of the interference wave removal apparatus which concerns on one Example of this invention and a reference signal differ were set. 本発明の他の一実施例に係る干渉波除去装置を説明するためのブロック図である。It is a block diagram for demonstrating the interference wave removal apparatus which concerns on other one Example of this invention.

以下、本発明の実施形態について図面を参照して詳細に説明する。
図１は本発明の一実施例に係る干渉波除去装置を説明するためのブロック図である。
図１において、干渉波除去装置１０は、干渉波除去用バンドパスフィルタ１１，１７、干渉波検出用バンドパスフィルタ１２，１８、遅延部１３、干渉波検出部１４、干渉波レプリカ生成部１５、干渉波除去部１６で構成されている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram for explaining an interference wave removing apparatus according to an embodiment of the present invention.
In FIG. 1, the interference wave removal apparatus 10 includes interference wave removal bandpass filters 11 and 17, interference wave detection bandpass filters 12 and 18, a delay unit 13, an interference wave detection unit 14, an interference wave replica generation unit 15, The interference wave removing unit 16 is configured.

図１において、干渉波除去装置１０は、受信信号を入力し、干渉波除去用バンドパスフィルタ１１で受信信号の帯域外の干渉波を除去し、該干渉波を除去した受信信号を遅延部１３で干渉波レプリカ生成部１５から出力される干渉波レプリカに合わせて所定時間遅延し、干渉波除去部１６で干渉波レプリカ生成部１５から出力された干渉波レプリカを基に干渉波を除去し、干渉波除去後信号として出力する。   In FIG. 1, an interference wave removal apparatus 10 receives a received signal, removes an interference wave outside the band of the received signal by an interference wave removal bandpass filter 11, and delays the received signal from which the interference wave has been removed. Is delayed for a predetermined time in accordance with the interference wave replica output from the interference wave replica generation unit 15, and the interference wave removal unit 16 removes the interference wave based on the interference wave replica output from the interference wave replica generation unit 15, Output as a signal after interference wave removal.

干渉波検出部１４は、干渉波検出用バンドパスフィルタ１２で所定の帯域を通過させた受信信号と、干渉波検出用バンドパスフィルタ１８で所定の帯域を通過させたレファレンス信号から干渉波を検出して、干渉波レプリカ生成部１５に出力する。
干渉波レプリカ生成部１５は、干渉波検出部１４から出力された信号と、干渉波除去用バンドパスフィルタ１７で所定の帯域を通過させたレファレンス信号から干渉波レプリカ信号を生成して干渉波除去部１６に出力する。
なお、レファレンス信号とは、受信信号に含まれる理想的な干渉波成分のみの信号である。レファレンス信号としては、既知の信号であれば事前に装置内もしくは装置外に取り付けた信号発生器により生成して入力させたり、レファレンス信号専用の受信装置を経て入力させたりする。また、干渉波レプリカ信号とは、干渉波信号をキャンセルできるようにした信号である。 The interference wave detection unit 14 detects an interference wave from the received signal that has passed a predetermined band by the interference wave detection bandpass filter 12 and the reference signal that has passed the predetermined band by the interference wave detection bandpass filter 18. And output to the interference wave replica generation unit 15.
The interference wave replica generation unit 15 generates an interference wave replica signal from the signal output from the interference wave detection unit 14 and a reference signal that has passed through a predetermined band by the interference wave removal bandpass filter 17 to remove the interference wave. To the unit 16.
Note that the reference signal is a signal having only an ideal interference wave component included in the received signal. As a reference signal, if it is a known signal, it is generated and inputted in advance by a signal generator attached inside or outside the apparatus, or inputted through a receiving apparatus dedicated to the reference signal. The interference wave replica signal is a signal that enables the interference wave signal to be canceled.

干渉波除去用バンドパスフィルタ１１，１７と干渉波検出用バンドパスフィルタ１２，１８は、干渉波の検出精度を向上させるものである。
最初に、干渉波除去用バンドパスフィルタ１１，１７と干渉波検出用バンドパスフィルタ１２，１８の周波数と帯域は、通信帯域と通信帯域に干渉する干渉波の位置によって、設定する。 The interference wave removal bandpass filters 11 and 17 and the interference wave detection bandpass filters 12 and 18 improve the detection accuracy of the interference wave.
First, the frequencies and bands of the interference wave removing bandpass filters 11 and 17 and the interference wave detecting bandpass filters 12 and 18 are set according to the communication band and the position of the interference wave that interferes with the communication band.

図８は干渉波除去用バンドパスフィルタの設定を示す図である。
図８に示すように、干渉波除去用バンドパスフィルタ１１，１７は、通信帯域内の干渉波を除去するために通信帯域をカバーするように周波数と帯域を設定する。
図９は干渉波除去用バンドパスフィルタが周波数軸上に複数連なる干渉波を受信していることを示す図である。
干渉波除去用バンドパスフィルタ１１，１７は、図９に示すように周波数軸上に連なる複数の干渉波を受信してもよい。 FIG. 8 is a diagram showing the setting of the bandpass filter for interference wave removal.
As shown in FIG. 8, the interference wave removing bandpass filters 11 and 17 set the frequency and the band so as to cover the communication band in order to remove the interference wave in the communication band.
FIG. 9 is a diagram showing that the interference wave removing bandpass filter receives a plurality of interference waves on the frequency axis.
The interference wave removing band-pass filters 11 and 17 may receive a plurality of interference waves connected on the frequency axis as shown in FIG.

図１０は干渉波検出用バンドパスフィルタの設定を示す図である。
干渉波検出用バンドパスフィルタ１２，１８は、図１０に示すように干渉波を正しく検出するために１つの干渉波を検出するように周波数と帯域を設定する。
図１０では、干渉波Ａ、Ｂ及びＣがあるが、通信帯域を干渉する干渉波Ｂを通過させるように干渉波検出用バンドパスフィルタ２の周波数と帯域を設定した方が良い。
図１１は通信帯域が周波数軸上に複数連なる干渉波を受信した時の干渉波検出用バンドパスフィルタの設定を示す図である。
図１１では、干渉波Ａ、干渉波Ｂ及び干渉波Ｃがある。通信帯域を干渉する干渉波は、干渉波Ａと干渉波Ｂであるが、通信帯域に対して多く干渉している干渉波Ｂを通過させるように干渉波検出用バンドパスフィルタ１２，１８の周波数と帯域を設定した方が良い。 FIG. 10 is a diagram showing the setting of an interference wave detection bandpass filter.
As shown in FIG. 10, the interference wave detection band-pass filters 12 and 18 set the frequency and the band so as to detect one interference wave in order to correctly detect the interference wave.
In FIG. 10, there are interference waves A, B, and C. It is better to set the frequency and band of the interference wave detection band-pass filter 2 so that the interference wave B that interferes with the communication band is allowed to pass.
FIG. 11 is a diagram illustrating setting of a band-pass filter for detecting an interference wave when an interference wave having a plurality of communication bands on the frequency axis is received.
In FIG. 11, there are an interference wave A, an interference wave B, and an interference wave C. The interference waves that interfere with the communication band are the interference wave A and the interference wave B, but the frequencies of the bandpass filters 12 and 18 for detecting the interference wave so as to pass the interference wave B that is largely interfering with the communication band. It is better to set the band.

図１２は本発明の一実施例に係る干渉波除去装置の受信信号とレファレンス信号の干渉波検出用バンドパスフィルタが異なる周波数及び帯域を設定したことを示す図である。
図１２に示すように、受信信号に含まれる干渉波とレファレンス信号の干渉成分に周波数偏差が有る場合は、干渉波の検出精度を向上させるために受信信号の干渉波検出用バンドパスフィルタ１２とレファレンス信号の干渉波検出用バンドパスフィルタ１８の周波数及び帯域が異なっていても良い。
また、干渉波の除去性能を向上させるために、受信信号の干渉波除去用バンドパスフィルタ１１と、レファレンス信号の干渉波除去用バンドパスフィルタ１７の周波数及び帯域が異なっていても良い。 FIG. 12 is a diagram showing that different frequencies and bands are set in the interference wave detection band-pass filter for the received signal and the reference signal of the interference wave canceling apparatus according to one embodiment of the present invention.
As shown in FIG. 12, when there is a frequency deviation in the interference component of the interference signal and the reference signal included in the reception signal, the interference wave detection band-pass filter 12 of the reception signal is improved in order to improve the detection accuracy of the interference signal. The frequency and band of the bandpass filter 18 for detecting the interference wave of the reference signal may be different.
In addition, in order to improve the interference wave removal performance, the frequency and band of the interference signal removal bandpass filter 11 of the received signal may be different from the frequency and band of the reference signal interference wave removal bandpass filter 17.

図１３は本発明の他の一実施例に係る干渉波除去装置を説明するためのブロック図である。
図１３において、干渉波除去装置３０は、干渉波除去用バンドパスフィルタ１１，１７、干渉波検出用バンドパスフィルタ１８、遅延部１３、干渉波検出部１４、干渉波レプリカ生成部１５、干渉波除去部１６で構成されている。 FIG. 13 is a block diagram for explaining an interference wave removing apparatus according to another embodiment of the present invention.
In FIG. 13, the interference wave removing device 30 includes an interference wave removing bandpass filters 11 and 17, an interference wave detecting bandpass filter 18, a delay unit 13, an interference wave detecting unit 14, an interference wave replica generating unit 15, and an interference wave. The removal unit 16 is configured.

図１３において、干渉波除去装置３０は、受信信号を入力し、干渉波除去用バンドパスフィルタ１１で受信信号の帯域外の干渉波を除去し、該干渉波を除去した受信信号を遅延部１３で干渉波レプリカ生成部１５から出力される干渉波レプリカに合わせて所定時間遅延し、干渉波除去部１６で干渉波レプリカ生成部１５から出力された干渉波レプリカを基に干渉波を除去し、干渉波除去後信号として出力する。   In FIG. 13, an interference wave removal apparatus 30 receives a received signal, removes an interference wave outside the band of the received signal by the interference wave removal band-pass filter 11, and delays the received signal from which the interference wave has been removed. Is delayed for a predetermined time in accordance with the interference wave replica output from the interference wave replica generation unit 15, and the interference wave removal unit 16 removes the interference wave based on the interference wave replica output from the interference wave replica generation unit 15, Output as a signal after interference wave removal.

干渉波検出部１４は、干渉波除去用バンドパスフィルタ１１で所定の帯域を通過させた受信信号と、干渉波検出用バンドパスフィルタ１８で所定の帯域を通過させたレファレンス信号から干渉波を検出して、干渉波レプリカ生成部１５に出力する。
干渉波レプリカ生成部１５は、干渉波検出部１４から出力された信号と、干渉波除去用バンドパスフィルタ１７で所定の帯域を通過させたレファレンス信号から干渉波レプリカを生成して干渉波除去部１６に出力する。 The interference wave detection unit 14 detects an interference wave from the reception signal that has passed a predetermined band by the interference wave removal bandpass filter 11 and the reference signal that has passed the predetermined band by the interference wave detection bandpass filter 18. And output to the interference wave replica generation unit 15.
The interference wave replica generation unit 15 generates an interference wave replica from the signal output from the interference wave detection unit 14 and a reference signal that has passed through a predetermined band by the interference wave removal bandpass filter 17 to generate an interference wave removal unit. 16 is output.

本発明の実施例では、干渉波除去装置１０図１が最も好ましい構成であるが、干渉波除去装置内の回路規模の削減を目的に図１３のように受信信号の干渉波検出用バンドパスフィルタ１２を用いず、干渉波除去用バンドパスフィルタ１１の信号を干渉波検出部１４に入力しても従来技術の干渉波除去装置２０より、干渉波の検出精度を向上させ、干渉波の除去性能を向上させることができる。   In the embodiment of the present invention, the interference wave canceling apparatus 10 shown in FIG. 1 is the most preferable configuration. However, for the purpose of reducing the circuit scale in the interference wave canceling apparatus, an interference wave detecting bandpass filter for received signals as shown in FIG. 12, even if the signal of the bandpass filter 11 for interference wave removal is input to the interference wave detection unit 14, the interference wave detection apparatus 20 improves the detection accuracy of the interference wave and improves the interference wave removal performance. Can be improved.

本発明の実施形態である干渉波除去装置は、干渉波の検出精度を向上させ、干渉波の除去性能を向上させることができる。   The interference wave removal apparatus according to the embodiment of the present invention can improve the detection accuracy of interference waves and improve the interference wave removal performance.

以上本発明について詳細に説明したが、本発明は、ここに記載された干渉波除去装置に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々変更して実施することができる。   Although the present invention has been described in detail above, the present invention is not limited to the interference wave removing device described herein, and various modifications can be made without departing from the spirit of the present invention.

周波数方向に複数の干渉波が連なる環境の電波を受信する受信機の用途に適用できる。   The present invention can be applied to a receiver that receives radio waves in an environment where a plurality of interference waves are continuous in the frequency direction.

１０，２０，３０：干渉波除去装置、１１，１７：干渉波除去用バンドパスフィルタ、１２、１８：干渉波検出用バンドパスフィルタ、１３：遅延部、１４：干渉波検出部、１５：干渉波レプリカ生成部、１６：干渉波除去部、２１，２２：バンドパスフィルタ。   10, 20, 30: interference wave canceling device, 11, 17: band pass filter for interference wave removal, 12, 18: band pass filter for interference wave detection, 13: delay unit, 14: interference wave detection unit, 15: interference Wave replica generation unit, 16: interference wave removal unit, 21, 22: band pass filter.

Claims (3)

２つの干渉波除去用バンドパスフィルタと、２つの干渉波検出用バンドパスフィルタと、遅延部と、干渉波除去部と、干渉波検出部と、干渉波レプリカ生成部とを有し、
第１の干渉波除去用バンドパスフィルタは所定帯域の受信信号を通過させ、
前記遅延部は前記第１の干渉波除去用バンドパスフィルタから出力された信号を所定時間遅延させ、
前記干渉波検出部は、第１の干渉波検出用バンドパスフィルタで所定帯域を通過させた受信信号と第２の干渉波検出用バンドパスフィルタで所定帯域を通過させたレファレンス信号から干渉波を検出し、
前記干渉波レプリカ生成部は、第２の干渉波除去用バンドパスフィルタで所定帯域を通過させたレファレンス信号と前記干渉波検出部から出力された干渉波検出情報から干渉波レプリカを生成し、
前記干渉波除去部は、前記遅延部から出力された信号から前記干渉波レプリカ生成部で生成した干渉波レプリカを用いて干渉波を除去することを特徴とする干渉波除去装置。 Two interference wave removal band-pass filters, two interference wave detection band-pass filters, a delay unit, an interference wave removal unit, an interference wave detection unit, and an interference wave replica generation unit,
The first band-pass filter for removing interference waves allows a received signal in a predetermined band to pass through,
The delay unit delays the signal output from the first interference wave removal bandpass filter for a predetermined time,
The interference wave detection unit generates an interference wave from a received signal that has passed a predetermined band by the first band for detecting an interference wave and a reference signal that has passed the predetermined band by the second band-pass filter for interference wave detection. Detect
The interference wave replica generation unit generates an interference wave replica from a reference signal that has passed through a predetermined band by a second interference wave removal bandpass filter and the interference wave detection information output from the interference wave detection unit,
The interference wave removing unit removes an interference wave from the signal output from the delay unit using the interference wave replica generated by the interference wave replica generation unit. ２つの干渉波除去用バンドパスフィルタと、干渉波検出用バンドパスフィルタと、遅延部と、干渉波除去部と、干渉波検出部と、干渉波レプリカ生成部とを有し、
第１の干渉波除去用バンドパスフィルタは所定帯域の受信信号を通過させ、
前記遅延部は前記第１の干渉波除去用バンドパスフィルタから出力された信号を所定時間遅延させ、
前記干渉波検出部は、第１の干渉波除去用バンドパスフィルタで所定帯域を通過させた受信信号と前記干渉波検出用バンドパスフィルタで所定帯域を通過させたレファレンス信号から干渉波を検出し、
前記干渉波レプリカ生成部は、第２の干渉波除去用バンドパスフィルタで所定帯域を通過させたレファレンス信号と前記干渉波検出部から出力された干渉波検出情報から干渉波レプリカを生成し、
前記干渉波除去部は、前記遅延部から出力された信号から前記干渉波レプリカ生成部で生成した干渉波レプリカを用いて干渉波を除去することを特徴とする干渉波除去装置。 Two interference wave removal bandpass filters, an interference wave detection bandpass filter, a delay unit, an interference wave removal unit, an interference wave detection unit, and an interference wave replica generation unit,
The first band-pass filter for removing interference waves allows a received signal in a predetermined band to pass through,
The delay unit delays the signal output from the first interference wave removal bandpass filter for a predetermined time,
The interference wave detection unit detects an interference wave from a received signal that has passed a predetermined band by the first band-pass filter for interference wave removal and a reference signal that has passed the predetermined band by the band-pass filter for interference wave detection. ,
The interference wave replica generation unit generates an interference wave replica from a reference signal that has passed through a predetermined band by a second interference wave removal bandpass filter and the interference wave detection information output from the interference wave detection unit,
The interference wave removing unit removes an interference wave from the signal output from the delay unit using the interference wave replica generated by the interference wave replica generation unit. 請求項１または請求項２に記載の干渉波除去装置において、
前記第1及び第２の干渉波検出用バンドパスフィルタは、干渉波に合わせて通過帯域を設定することを特徴とする干渉波除去装置。 In the interference wave removal device according to claim 1 or 2,
The first and second interference wave detection band-pass filters set a pass band in accordance with the interference wave.
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JP2014200019A (en) * 2013-03-29 2014-10-23 株式会社東芝 Interference wave elimination apparatus and interference wave elimination method
JP2015046865A (en) * 2013-08-01 2015-03-12 日本無線株式会社 Interference wave replica generating circuit and interference wave suppression circuit

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JP3957973B2 (en) * 1999-04-30 2007-08-15 富士通株式会社 Code-multiplexed radio equipment implementing interference canceller
JP2009225002A (en) * 2008-03-14 2009-10-01 Fujitsu Ltd Radio communication apparatus and interference removing method
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