JPH0728248B2 - Time division wireless communication system - Google Patents
Time division wireless communication systemInfo
- Publication number
- JPH0728248B2 JPH0728248B2 JP62045368A JP4536887A JPH0728248B2 JP H0728248 B2 JPH0728248 B2 JP H0728248B2 JP 62045368 A JP62045368 A JP 62045368A JP 4536887 A JP4536887 A JP 4536887A JP H0728248 B2 JPH0728248 B2 JP H0728248B2
- Authority
- JP
- Japan
- Prior art keywords
- frame
- signal
- wireless communication
- communication system
- carrier wave
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は時分割無線通信システムに係り、特に周波数ダ
イバーシテイ効果を得る時分割無線通信方式に関するも
のである。The present invention relates to a time division wireless communication system, and more particularly to a time division wireless communication system that obtains a frequency diversity effect.
従来、この種のダイバーシテイ時分割無線通信システム
は、複数の送受信装置を有し、これら送受信装置を並列
に常時動作させることによつてダイバーシテイ効果を得
ている。Conventionally, this kind of diversity time division wireless communication system has a plurality of transmitting / receiving devices, and the diversity effect is obtained by always operating these transmitting / receiving devices in parallel.
上述した従来のダイバーシテイ時分割無線通信システム
では、複数の送受信装置を必要とするため、装置が大型
化しかつ複雑化し経済的でないという問題点があつた。
ま、複数の送受信装置が並列に動作するため消費電力が
増大するという問題点があつた。The above-mentioned conventional diversity time division wireless communication system has a problem in that it requires a plurality of transmission / reception devices, which makes the device large and complicated and is not economical.
Further, there is a problem that power consumption increases because a plurality of transmitting / receiving devices operate in parallel.
本発明の時分割無線通信方式は、それぞれ異なる周波数
を有する各局部発振信号を発生する局部発振器と、この
局部発振器からの各局部発振信号を入力して各搬送波を
生成すると共に、入力した１フレームの各信号を対応の
各搬送波にのせて順次相手局へ送信する送信手段と、相
手局からの各搬送波を受信すると局部発振器からの各局
部発振信号に基づき１フレームの各信号を復調する受信
手段と、送信手段に対し１フレームの各信号を同一の信
号として与えることによりフレーム内の各搬送波に対し
同一信号で変調をかける制御を行う制御手段とを設け、
上記フレーム内の各搬送波に同一信号にて変調をかける
ことによつて周波数ダイバーシテイ効果を持たせ得るよ
うにしたものである。The time-division wireless communication system of the present invention inputs a local oscillator for generating each local oscillation signal having a different frequency and each local oscillation signal from the local oscillator to generate each carrier wave, and to input one frame. And transmitting means for sequentially transmitting the respective signals on the corresponding respective carrier waves to the partner station, and receiving means for demodulating each signal of one frame based on the respective local oscillation signals from the local oscillator when receiving the respective carrier waves from the partner station. And a control means for controlling each carrier in the frame to be modulated with the same signal by providing each signal of one frame as the same signal to the transmission means,
The frequency diversity effect can be provided by modulating each carrier wave in the frame with the same signal.
本発明においては、一対の送受信装置を用いて、この送
受信に供給する送受信局部発振周波数をフレーム構成に
もとづき順次変えて複数の搬送波を得る。In the present invention, a pair of transmitting / receiving devices are used to sequentially change the transmitting / receiving local oscillation frequency supplied to the transmitting / receiving based on the frame structure to obtain a plurality of carrier waves.
以下、図面に基づき本発明の実施例を詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は本発明の一実施例を示すブロツク図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
図において、１はアンテナ、２は共用器、３は送信部、
４は受信部、５は送信論理部、６は受信論理部、７は制
御部、8,9および10−１〜10−ｎはそれぞれこの制御部
７からの制御信号によつて制御される切替部および送受
信局部発振器、11は入力端子、12は出力端子である。In the figure, 1 is an antenna, 2 is a duplexer, 3 is a transmitter,
4 is a receiving unit, 5 is a transmission logic unit, 6 is a reception logic unit, 7 is a control unit, and 8, 9 and 10-1 to 10-n are controlled by control signals from the control unit 7, respectively. And a local transmitter / receiver oscillator, 11 is an input terminal, and 12 is an output terminal.
そして、上記送信部３と受信部４からなる一対の送受信
部は、複数の搬送波を得る手段を構成し、この手段によ
つて得られた複数の搬送波を順次送出することによつて
１フレームを構成し、このフレーム内の各搬送波に同一
信号にて変調をかけることによつて周波数ダイバーシテ
イ効果を持たせるように構成されている。The pair of transmission / reception units including the transmission unit 3 and the reception unit 4 constitutes means for obtaining a plurality of carrier waves, and one frame is obtained by sequentially transmitting the plurality of carrier waves obtained by this means. The frequency diversity effect is provided by modulating each carrier wave in this frame with the same signal.
つぎにこの第１図に示す実施例の動作を第２図を参照し
て説明する。The operation of the embodiment shown in FIG. 1 will be described below with reference to FIG.
まず、送受信局部発振器10−１〜10−ｎの局部発振信号
は制御部７からの制御信号によつて切替部8,9を介して
順次予め定められた周期（フレーム）にて送信部３およ
び受信部４へ送出される。First, the local oscillation signals of the transmitter / receiver local oscillators 10-1 to 10-n are sequentially transmitted by the control signal from the control unit 7 via the switching units 8 and 9 at a predetermined cycle (frame). It is sent to the receiving unit 4.
一方、入力端子11からの信号は送信論理部５で蓄積さ
れ、第２図に示すようなフレーム構成にて送信部３へ送
出され搬送波を変調する。On the other hand, the signal from the input terminal 11 is accumulated in the transmission logic unit 5 and sent to the transmission unit 3 in the frame structure shown in FIG. 2 to modulate the carrier wave.
第２図は本発明に使用されるフレーム構成の一例を示す
説明図で、Ｆはフレーム同期信号を示し、S1およびS2は
それぞれ搬送波f1，f2にのせられる信号、以下同様にsn
は搬送波fnにのせられる信号を示す。そして、説明を簡
単にするため、ここではフレーム同期信号Ｆも搬送波f1
で送出されるものとする。FIG. 2 is an explanatory view showing an example of a frame structure used in the present invention, F is a frame synchronization signal, S 1 and S 2 are signals on carriers f 1 and f 2 , respectively, and s n
Indicates a signal carried on the carrier wave f n . Then, in order to simplify the explanation, here, the frame synchronization signal F is also the carrier wave f 1
Shall be sent.
なお、搬送波fiは送受信局部発振器10−ｉが送信部３に
接続されたとき、アンテナ１から相手局へ送出されるも
のとする。It is assumed that the carrier wave f i is transmitted from the antenna 1 to the partner station when the transceiver local oscillator 10-i is connected to the transmitter 3.
したがつて、フレーム同期信号Ｆと信号S1は搬送波f1に
て伝送され、信号siは搬送波siにて伝送される。そし
て、この搬送波fiにのせられる信号は送信部３で適当な
送信出力まで増幅され、共用器２を通りアンテナ１より
輻射され相手局に伝送される。ここで、相手局の送受信
装置もこの第１図と同様な構成となつている。Therefore, the frame synchronization signal F and the signal S 1 are transmitted on the carrier wave f 1 , and the signal s i is transmitted on the carrier wave s i . Then, the signal carried on the carrier wave f i is amplified by the transmitter 3 to an appropriate transmission output, passes through the duplexer 2 and is radiated from the antenna 1 and transmitted to the partner station. Here, the transmission / reception device of the partner station also has the same configuration as in FIG.
つぎに、アンテナ１で受けた相手局からの搬送波は共用
器２を通り受信部４に入力する。この受信部４では制御
部７で制御された切替部９を介し入力されてくる送受信
局部発振器10−１〜10−ｎの局部発振信号と混合され、
一定の中間周波数に変換され、さらに復調される。この
とき、受信部４の出力は第２図に示したようなフレーム
構成となつている。この信号が受信論理部６に入力さ
れ、適当な論理演算が行なわれ、フレーム構成が解かれ
出力端子12に送出される。Next, the carrier wave from the partner station received by the antenna 1 passes through the duplexer 2 and is input to the receiving unit 4. In the receiving unit 4, mixed with the local oscillation signals of the transmitting / receiving local oscillators 10-1 to 10-n input via the switching unit 9 controlled by the control unit 7,
It is converted to a constant intermediate frequency and further demodulated. At this time, the output of the receiving section 4 has a frame structure as shown in FIG. This signal is input to the reception logic unit 6, an appropriate logical operation is performed, the frame structure is solved, and the result is sent to the output terminal 12.
ここで、第２図中のフレーム構成でフレーム同期信号Ｆ
は、切替部９を第２図に示すフレーム構成に同期して動
作させるために使用される。Here, in the frame structure shown in FIG.
Is used to operate the switching unit 9 in synchronization with the frame structure shown in FIG.
以上の説明で、第２図のフレーム内の信号S1〜Snをすべ
て同じものとした場合、時間的に搬送周波数を変えた、
いわゆる、周波数ダイバーシテイ効果が期待される。す
なわち、フレーム内の信号S1〜Snを論理比較することに
よつてより信頼度の高い信号を選択し出力することがで
きる。In the above description, when the signals S 1 to S n in the frame of FIG. 2 are all the same, the carrier frequency is changed with time,
A so-called frequency diversity effect is expected. That is, it is possible to select and output a signal with higher reliability by logically comparing the signals S 1 to S n in the frame.
なお、受信論理部６での判定には、各信号の受信入力レ
ベルを判定に加えるとより効果的である。Note that it is more effective for the reception logic unit 6 to add the reception input level of each signal to the determination.
上記実施例において、複数の送受信局部発振器を用いる
場合を例にとつて説明したが、高速で周波数の切替ので
きるシンセサイザが実現できれば、１つの送受信局部の
発振器ですむ。In the above embodiment, the case where a plurality of transmitter / receiver local oscillators are used has been described as an example. However, if a synthesizer capable of switching frequencies at high speed can be realized, only one transmitter / receiver local oscillator is required.
そして、本発明は、複数の搬送波を得る手段として一対
の送受信部を用い、送受信局部発振器の周波数を上記一
対の送受信部に供給するように構成されている。Then, the present invention is configured to use a pair of transmitting / receiving sections as means for obtaining a plurality of carrier waves, and to supply the frequency of the transmitting / receiving local oscillator to the pair of transmitting / receiving sections.
以上説明したように、本発明によれば、一対の送受信装
置を用いて、この送受信装置に供給する送受信局部発振
周波数をフレーム構成にもとづき順次変えて複数の搬送
波を得るようにすることにより、送受信装置が一対必要
とするだけでよりシステム構成を簡素化することができ
るので、実用上の効果は極めて大である。As described above, according to the present invention, by using a pair of transmission / reception devices, the transmission / reception local oscillation frequency supplied to the transmission / reception devices is sequentially changed based on the frame configuration to obtain a plurality of carrier waves. Since the system configuration can be further simplified by requiring only one pair of devices, the practical effect is extremely large.
また、１対の送受信装置を必要とするだけであるから、
無線局の消費電力を大幅に低減することができ、電源事
情の悪い地域に対しても太陽電池などを使うことも可能
となり、さらに、構成の簡素化に伴つて経済的であると
いう点において極めて有効である。Also, since it only requires a pair of transceivers,
The power consumption of the wireless station can be significantly reduced, it is possible to use solar cells even in areas with poor power supply conditions, and it is extremely economical in that the configuration is simplified. It is valid.
【図面の簡単な説明】 第１図は本発明の一実施例を示すブロツク図、第２図は
第１図の動作説明に供するフレーム構成の一例を示す説
明図である。 １……アンテナ、２……共用器、３……送信部、４……
受信部、５……送信倫理部、６……受信論理部、７……
制御部、8,9……切替部、10−１〜10−ｎ……送受信部
局部発振器。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing an example of a frame configuration used for explaining the operation of FIG. 1 ... Antenna, 2 ... Shared device, 3 ... Transmitter, 4 ...
Reception part, 5 ... Transmission ethics part, 6 ... Reception logic part, 7 ...
Control unit, 8, 9 ... Switching unit, 10-1 to 10-n ... Transceiver local oscillator.
Claims (1)
１フレームを構成する各信号がそれぞれ異なる周波数を
有する対応の各搬送波により順次無線伝送される時分割
無線通信システムにおいて、それぞれ異なる周波数を有
する各局部発振信号を発生する局部発振器と、この局部
発振器からの各局部発振信号を入力して前記各搬送波を
生成すると共に入力した１フレームの各信号を対応の各
搬送波にのせて順次相手局へ送信する送信手段と、相手
局からの前記各搬送波を受信すると前記局部発振器から
の各局部発振信号に基づき１フレームの前記各信号を復
調する受信手段と、前記送信手段に対し１フレームの各
信号を同一の信号として与えることによりフレーム内の
各搬送波に対し同一信号で変調をかける制御を行う制御
手段とを備え、フレーム内の各搬送波に対し同一信号に
て変調をかけることによって周波数ダイバーシテイ効果
を持たせ得るようにしたことを特徴とする時分割無線通
信方式。1. A time division wireless communication system in which signals assigned to different time positions and constituting one frame are sequentially wirelessly transmitted by corresponding carriers having different frequencies, respectively. A local oscillator that generates an oscillation signal and each local oscillation signal from this local oscillator are input to generate each carrier wave, and each input signal of one frame is placed on each corresponding carrier wave and sequentially transmitted to the partner station. The transmitting means, the receiving means for demodulating each signal of one frame based on each local oscillation signal from the local oscillator when receiving each of the carrier waves from the partner station, and the same signal for each frame of the transmitting means Control means for controlling each carrier wave in the frame to be modulated with the same signal. Division wireless communication system when characterized by being adapted to be to have a frequency diversity Specified effect by for each carrier in the over arm modulates at the same signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62045368A JPH0728248B2 (en) | 1987-03-02 | 1987-03-02 | Time division wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62045368A JPH0728248B2 (en) | 1987-03-02 | 1987-03-02 | Time division wireless communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63214026A JPS63214026A (en) | 1988-09-06 |
| JPH0728248B2 true JPH0728248B2 (en) | 1995-03-29 |
Family
ID=12717328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62045368A Expired - Fee Related JPH0728248B2 (en) | 1987-03-02 | 1987-03-02 | Time division wireless communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0728248B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04111544A (en) * | 1990-08-31 | 1992-04-13 | Nippon Telegr & Teleph Corp <Ntt> | Radio channel assigning method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5950628A (en) * | 1982-09-16 | 1984-03-23 | Nippon Telegr & Teleph Corp <Ntt> | Frequency diversity system |
| JPH0640639B2 (en) * | 1984-06-28 | 1994-05-25 | 国際電気株式会社 | Data transmission method by frequency subchannel control |
-
1987
- 1987-03-02 JP JP62045368A patent/JPH0728248B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63214026A (en) | 1988-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |