JPH0461534B2 - - Google Patents
Info
- Publication number
- JPH0461534B2 JPH0461534B2 JP62029367A JP2936787A JPH0461534B2 JP H0461534 B2 JPH0461534 B2 JP H0461534B2 JP 62029367 A JP62029367 A JP 62029367A JP 2936787 A JP2936787 A JP 2936787A JP H0461534 B2 JPH0461534 B2 JP H0461534B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- wave
- interference
- spread
- compressed
- 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.)
- Expired - Lifetime
Links
- 238000001228 spectrum Methods 0.000 claims description 29
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 102100032533 ADP/ATP translocase 1 Human genes 0.000 description 2
- 101000768061 Escherichia phage P1 Antirepressor protein 1 Proteins 0.000 description 2
- 101000796932 Homo sapiens ADP/ATP translocase 1 Proteins 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、送受信の電波が同一周波数帯に有
り、かつ送信アンテナと受信アンテナ間の設置距
離を十分とることが出来ない場合等に於いて、送
信アンテナ等から受信アンテナ等に回り込む干渉
波を除去する無線装置に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention is useful in cases where transmitting and receiving radio waves are in the same frequency band and it is not possible to provide a sufficient installation distance between the transmitting antenna and the receiving antenna. , relates to a wireless device that removes interference waves that wrap around from a transmitting antenna to a receiving antenna.
（発明の概要）
同一周波数帯で送受信を行う無線装置におい
て、受信時に送信時のスペクトル拡散信号より作
成した信号で送信波による干渉波を圧縮除去し、
送信側から受信側への干渉が大きくても送受信を
同時に行い得るようにしたものである。(Summary of the invention) In a wireless device that transmits and receives in the same frequency band, interference waves caused by transmitted waves are compressed and removed using a signal created from a spread spectrum signal at the time of transmission at the time of reception,
This allows simultaneous transmission and reception even if there is significant interference from the transmitting side to the receiving side.
（従来の技術）
送信機によつて搬送波に情報を乗せて送信しよ
うとするとき、送信波はしばしば近くにある受信
機に干渉する。近接した２つのレーダの相互干
渉、またスプレツド・スペクトラム移動通信にお
ける２つの近接した局で生じる相互干渉は、スプ
レツド・スペクトラムの利用における重要な問題
である。(Prior Art) When a transmitter attempts to transmit information on a carrier wave, the transmitted wave often interferes with nearby receivers. Mutual interference between two radars in close proximity, and also between two neighboring stations in spread spectrum mobile communications, is an important problem in the use of spread spectrum.
従来、このような干渉波を除去する回路として
は、PLL（Phase Lock Loop）を用いたものや、
狭帯域フイルタによる構成のものがあるが、比較
的帯域の狭い干渉波しか除去できないものであ
る。従つて、送信と受信とが同一周波数帯を用い
ており、かつ、送信機と受信機とが接近している
場合には、受信時には送信を一時中断する方式を
取る以外にない。 Conventionally, circuits that remove such interference waves have used PLL (Phase Lock Loop),
Some devices are configured with narrowband filters, but they can only remove interference waves in a relatively narrow band. Therefore, if the same frequency band is used for transmission and reception, and the transmitter and receiver are close to each other, the only option is to temporarily suspend transmission during reception.
（発明が解決しようとする問題点）
従つて、従来は、電波を送信し、かつ同時に、
同一周波数帯の電波を受信したいときに生ずる相
互干渉に対して、適当な技術的手段は殆ど無かつ
た。本発明は、このような従来の問題を解決する
ものである。(Problem to be solved by the invention) Therefore, conventionally, radio waves are transmitted and at the same time,
There are almost no appropriate technical measures to deal with the mutual interference that occurs when receiving radio waves in the same frequency band. The present invention solves these conventional problems.
（問題点を解決するための手段及び作用）
本発明は、送信機側で情報の帯域より極めて広
い帯域で、スペクトル拡散して送信し、受信機側
では干渉波に対して圧縮となり、目的とする受信
波に対しては拡散となる処理を施して干渉波のみ
を効果的に取り除くことが可能な無線装置を提供
しようとするものである。(Means and effects for solving the problem) In the present invention, the transmitter side spreads the spectrum and transmits in a band much wider than the information band, and the receiver side compresses interference waves to achieve the purpose. The present invention aims to provide a wireless device that can effectively remove only interference waves by performing spreading processing on received waves.
本発明の無線装置は、送信時のスペクトル拡散
信号より作成した特定の信号（例えば、スペクト
ル拡散信号の極性を反転した信号、スペクトル拡
散信号に相関のある信号等）がスペクトル拡散さ
れた送信波に対しては圧縮信号として作用し、送
信波とは無関係な受信波に対しては拡散信号とし
て作用することに着目したものである。 The wireless device of the present invention converts a specific signal created from a spread spectrum signal during transmission (for example, a signal with the polarity of the spread spectrum signal inverted, a signal correlated with the spread spectrum signal, etc.) into a spread spectrum transmission wave. This method focuses on the fact that it acts as a compressed signal for the transmitted wave, and acts as a spread signal for the received wave unrelated to the transmitted wave.
送信機では、まず、搬送波を情報符号で変調し
（この変調は省略される場合もある）、さらにこれ
をスペクトル拡散信号（例えばランダム性のある
Ｍ系列のごとき符号）で変調してスペクトル拡散
して送信の基本波とする。受信機側ではこの送信
波の干渉を取り除くために、受信波をまず第１の
圧縮信号（送信時のスペクトル拡散信号より作成
する信号）で変調する。このとき、第１の圧縮信
号としては、例えば、送信時のスペクトル拡散信
号の極性を反転した信号、スペクトル拡散信号に
相関のある信号のように、受信波のうち干渉波の
みのスペクトルを圧縮し、目的とする受信波（以
後、信号波と言う）は圧縮されずむしろ拡散され
るものを用いる。このため、この圧縮された干渉
波のみを取り除けるため、これを除去回路で取り
除いて再び第２の圧縮信号で圧縮する。この第２
の圧縮信号は送信時に用いた拡散信号と同じもの
である。このとき受信波は干渉波を含まず、信号
波はほぼ元の形を保持しているため、これを復調
することにより受信機は干渉波の影響を受けなく
なるものである。 The transmitter first modulates the carrier wave with an information code (this modulation may be omitted), and then modulates this with a spread spectrum signal (for example, a random M-sequence code) to spread the spectrum. is used as the fundamental wave for transmission. On the receiver side, in order to eliminate this interference of the transmitted waves, the received waves are first modulated with a first compressed signal (a signal created from the spread spectrum signal during transmission). At this time, the first compressed signal is a signal that compresses the spectrum of only the interference wave among the received waves, such as a signal with the polarity of the spread spectrum signal at the time of transmission inverted, or a signal that has a correlation with the spread spectrum signal. , the intended received wave (hereinafter referred to as a signal wave) is not compressed but rather is spread. Therefore, since only this compressed interference wave can be removed, it is removed by the removal circuit and compressed again with the second compressed signal. This second
The compressed signal is the same as the spread signal used during transmission. At this time, the received wave does not contain any interference waves and the signal wave maintains almost its original shape, so by demodulating this, the receiver is no longer affected by the interference waves.
（実施例）
以下、本発明に係る無線装置の実施例を図面に
従つて説明する。(Example) Hereinafter, an example of a wireless device according to the present invention will be described with reference to the drawings.
第１図は本発明による無線装置の実施例のブロ
ツク図であり、第２図は第１図の中の各出力点の
代表的なスペクトル波形及び受信する信号波のス
ペクトル波形を示したものである。 FIG. 1 is a block diagram of an embodiment of the wireless device according to the present invention, and FIG. 2 shows a typical spectral waveform of each output point in FIG. 1 and a spectral waveform of a received signal wave. be.
第１図において、送信機側では、搬送波発生器
１で発生した周波数0の搬送波を、情報符号発生
器２で発生した情報符号と掛け算器（変調器）
M1で掛け合わせることにより変調を行う。この
時の出力Ａの代表的な周波数スペクトルを第２図
１に示す。この時の出力Ａの信号を、掛け算器
（変調器）M2において更に圧縮・拡散信号発生器
４から発生するスペクトル拡散信号と掛け合わせ
ることによりスペクトル拡散を行う。この時の出
力Ｂの周波数スペクトルの状態が第２図２であ
る。この時の出力Ｂの信号を送信の基本波とし
て、増幅器３で増幅し、送信アンテナANT1より
送信波として放射する。 In FIG. 1, on the transmitter side, a carrier wave of frequency 0 generated by a carrier wave generator 1 is multiplied by an information code generated by an information code generator 2 using a multiplier (modulator).
Modulation is performed by multiplying by M1 . A typical frequency spectrum of the output A at this time is shown in FIG. The signal of the output A at this time is further multiplied by the spread spectrum signal generated from the compressed/spread signal generator 4 in a multiplier (modulator) M 2 to perform spectrum spreading. The state of the frequency spectrum of output B at this time is shown in FIG. The signal of the output B at this time is used as a transmission fundamental wave, amplified by an amplifier 3, and radiated as a transmission wave from a transmission antenna ANT1 .
受信機側で受信すべき信号（送信波とは無関係
な信号である）は第２図３に示すように、送信器
側の出力Ａの状態の信号と同一周波数帯に存在す
る。ところが、受信アンテナANT2により受信さ
れる電波には、上述した目的とする第２図３の信
号波以外に送信アンテナANT1により放射された
第２図２が干渉波として存在する。従つて、この
干渉波を取り除くために増幅器５で増幅された受
信信号（信号波＋干渉波）を圧縮・拡散信号発生
器４で発生する第１の圧縮信号（送信時のスペク
トル拡散信号より作成される信号で、送信時のス
ペクトル拡散信号の極性を反転した信号、スペク
トル拡散信号に相関のある信号）と掛け算器（変
調器）M3で掛け合わせることによつて変調する。
この変調により、出力Ｃの状態では、信号波は狭
帯域、干渉波は広帯域であつても、出力Ｄでは、
第２図４に示すように、信号波のスペクトルは拡
散され広帯域に、干渉波は逆に復調されるため圧
縮され狭帯域になる。ここで出力Ｄの状態の信号
（信号波＋干渉波）を、狭帯域除去回路６を通過
させると、圧縮された干渉波の殆どと、拡散され
た信号波の一部分が取り除かれ、残りの大部分の
信号波成分はそのまま通過し、第２図５に示すス
ペクトルの信号波が出力Ｅで得られる。この出力
Ｅの信号波は圧縮・拡散信号発生器４により発生
する第２の圧縮信号（送信時のスペクトル拡散信
号と全く同じか、相関のある信号）を掛け算器
（変調器）M4で掛け合わせることにより復調さ
れ、第２図６に示すようなほぼ元の形に等しい狭
帯域の信号波が出力Ｆで得られる。従つて、出力
Ｆの信号波を情報符号復調器７で復調すれば、求
めていた情報を得ることができる。 As shown in FIG. 2, the signal to be received on the receiver side (a signal unrelated to the transmitted wave) exists in the same frequency band as the signal in the state of output A on the transmitter side. However, in the radio waves received by the receiving antenna ANT 2 , in addition to the above-mentioned target signal waves shown in FIG. 2 and 3, interference waves shown in FIG. 2 radiated by the transmitting antenna ANT 1 exist as interference waves. Therefore, in order to remove this interference wave, the received signal (signal wave + interference wave) amplified by the amplifier 5 is converted into a first compressed signal (created from the spread spectrum signal at the time of transmission) generated by the compressed/spread signal generator 4. A signal obtained by inverting the polarity of the spread spectrum signal during transmission (a signal having a correlation with the spread spectrum signal) is modulated by multiplying it by a multiplier (modulator) M3 .
Due to this modulation, even if the signal wave is narrow band in the state of output C and the interference wave is wide band, in the state of output D,
As shown in FIG. 2, the spectrum of the signal wave is spread into a wide band, and the interference wave is demodulated and compressed into a narrow band. Here, when the signal in the state of output D (signal wave + interference wave) is passed through the narrowband removal circuit 6, most of the compressed interference wave and a part of the spread signal wave are removed, and the remaining The signal wave components of this portion pass through as they are, and a signal wave having the spectrum shown in FIG. 2 is obtained as output E. The signal wave of this output E is multiplied by a second compressed signal (a signal that is exactly the same as or correlated with the spread spectrum signal during transmission) generated by the compressed/spread signal generator 4 by a multiplier (modulator) M4. By combining the signals, the signals are demodulated, and a narrowband signal wave having substantially the same original shape as shown in FIG. 2 is obtained at the output F. Therefore, if the signal wave of output F is demodulated by the information code demodulator 7, the desired information can be obtained.
（発明の効果）
以上説明したように、本発明の無線装置によれ
ば、同一周波数帯の電波を用いて、かつ送信アン
テナと受信アンテナ間の設置距離が小さい場合で
も相互干渉を除去できるため、送信時には受信を
一時中断し、受信時には送信を一時中断するとい
う操作が不要となり同時に送受信を可能とするこ
とができる。(Effects of the Invention) As explained above, according to the wireless device of the present invention, mutual interference can be eliminated even when radio waves in the same frequency band are used and the installation distance between the transmitting antenna and the receiving antenna is short. This eliminates the need to temporarily suspend reception when transmitting and temporarily suspend transmission when receiving, making it possible to transmit and receive at the same time.
第１図は本発明に係る無線装置の実施例を示す
ブロツク図、第２図は第１図の中の各出力点の代
表的なスペクトル波形及び受信する信号波のスペ
クトル波形を示した波形図である。
１……搬送波発生器、２……情報符号発生器、
３……増幅器、４……圧縮・拡散信号発生器、５
……増幅器、６……狭帯域除去回路、７……情報
符号復調器、M1乃至M4……掛け算器、ANT1，
ANT2……アンテナ。
FIG. 1 is a block diagram showing an embodiment of the wireless device according to the present invention, and FIG. 2 is a waveform diagram showing typical spectral waveforms of each output point in FIG. 1 and the spectral waveform of a received signal wave. It is. 1... Carrier wave generator, 2... Information code generator,
3...Amplifier, 4...Compression/spreading signal generator, 5
...Amplifier, 6...Narrowband removal circuit, 7...Information code demodulator, M1 to M4 ...Multiplier, ANT1 ,
ANT 2 ...Antenna.
Claims (1)
受信を行う無線装置において、 前記送信機は、搬送波発生器と、該搬送波発生
器からの搬送波に情報信号を与えたものを圧縮・
拡散信号発生器からのスペクトル拡散信号でスペ
クトル拡散するための変調器M2とを有し、スペ
クトル拡散した送信波を送信し、 前記受信機は、信号波と前記送信波による干渉
波とを受けるものであつて、前記スペクトル拡散
信号より作成した前記圧縮・拡散信号発生器から
の第１の圧縮信号で、受信信号に含まれる前記干
渉波のスペクトルを圧縮する変調器M3と、圧縮
された干渉波を除去するための狭帯域除去回路
と、干渉波が除去された該狭帯域除去回路の出力
を前記圧縮・拡散信号発生器からの第２の圧縮信
号を用いて変調して前記信号波を再生するための
変調器M4とを有することを特徴とする無線装置。[Claims] 1. A wireless device that includes a transmitter and a receiver and performs transmission and reception in the same frequency band, wherein the transmitter includes a carrier wave generator and a carrier wave from the carrier wave generator that provides an information signal. Compress things
a modulator M2 for performing spectrum spreading with a spread spectrum signal from a spread signal generator, and transmits a spread spectrum transmission wave, and the receiver receives a signal wave and an interference wave caused by the transmission wave. a first compressed signal from the compressed/spread signal generator generated from the spread spectrum signal, and a modulator M3 for compressing the spectrum of the interference wave contained in the received signal; a narrowband removal circuit for removing interference waves; and the output of the narrowband removal circuit from which the interference waves have been removed is modulated using a second compression signal from the compression/spreading signal generator to produce the signal wave. A wireless device comprising a modulator M4 for reproducing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62029367A JPS63197134A (en) | 1987-02-10 | 1987-02-10 | Radio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62029367A JPS63197134A (en) | 1987-02-10 | 1987-02-10 | Radio equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63197134A JPS63197134A (en) | 1988-08-16 |
| JPH0461534B2 true JPH0461534B2 (en) | 1992-10-01 |
Family
ID=12274190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62029367A Granted JPS63197134A (en) | 1987-02-10 | 1987-02-10 | Radio equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63197134A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007214957A (en) * | 2006-02-10 | 2007-08-23 | Nippon Telegr & Teleph Corp <Ntt> | Radio communication device and method |
-
1987
- 1987-02-10 JP JP62029367A patent/JPS63197134A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63197134A (en) | 1988-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |