JPH03179820A - Transmission equipment in single frequency communication system - Google Patents
Transmission equipment in single frequency communication systemInfo
- Publication number
- JPH03179820A JPH03179820A JP1317534A JP31753489A JPH03179820A JP H03179820 A JPH03179820 A JP H03179820A JP 1317534 A JP1317534 A JP 1317534A JP 31753489 A JP31753489 A JP 31753489A JP H03179820 A JPH03179820 A JP H03179820A
- Authority
- JP
- Japan
- Prior art keywords
- mobile station
- base station
- characteristic
- signal
- propagation path
- 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 title claims description 4
- 230000005540 biological transmission Effects 0.000 title abstract description 27
- 238000010586 diagram Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 7
- 230000003111 delayed effect Effects 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 4
- 238000012549 training Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、無線基地局および移動局で単一の搬送波周波
数を用いて、時分割的に送信を行なう移動通信方式に関
し、特に、伝送品質改善を行なう手段として、変調用ベ
ースバンド信号に対して等化器を適用する移動通信方式
に係る。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a mobile communication system in which radio base stations and mobile stations perform time-divisional transmission using a single carrier frequency, and particularly relates to a mobile communication system in which transmission quality is The present invention relates to a mobile communication system in which an equalizer is applied to a modulation baseband signal as a means for improving the modulation baseband signal.
ディノタル移動通信において、高速信号伝送を行なう場
合、伝搬遅延時間分散に起因する選択性7ヱーノングが
発生し、伝搬特性が者しく劣化することが問題となる。In digital mobile communication, when high-speed signal transmission is carried out, selectivity 7enong occurs due to propagation delay time dispersion, and propagation characteristics are significantly deteriorated, which poses a problem.
その対策として、受信側での等化器の適用が有効である
ことが公知となりいる。As a countermeasure against this problem, it is well known that applying an equalizer on the receiving side is effective.
第4図は、単一周波数通信方式における従来の受信等化
器を使用した装置MIr&の例を示す図であって、50
aは無線基地局、50bは移動局を示しており、51a
、51bは送信装置、52a、52bは受信装置、56
a、56bはアンテナ切換器、55a、55bは伝搬路
特性検出器、54a、54bは以上の各装置を制御する
制御装置、53a、53bはアンテナ、57a*57b
は受信信号の歪を等化する等化器を表わしている。FIG. 4 is a diagram showing an example of a device MIr& using a conventional reception equalizer in a single frequency communication system,
a indicates a wireless base station, 50b indicates a mobile station, and 51a
, 51b is a transmitter, 52a and 52b are receivers, 56
a, 56b are antenna switching devices, 55a, 55b are propagation path characteristic detectors, 54a, 54b are control devices that control each of the above devices, 53a, 53b are antennas, 57a*57b
represents an equalizer that equalizes the distortion of the received signal.
無線基地局50aも移動局50bも基本的には同一の装
置より構成されており動作も同様であるから、ここでは
基地局についてのみ説明する。Since both the radio base station 50a and the mobile station 50b are basically constructed of the same device and operate in the same way, only the base station will be described here.
図において、送信装置51aと受信装置52aは同一の
周波数で用いる。そのため、アンテナ切換器56mによ
り送信時には送信装置51aをアンテナ53aに接続し
、受信時には受信装置52aをアンテナ53aに接続す
る。伝搬路特性検出器55aは受信信号から伝搬路の特
性を検出し、それに基づいて等比容57aが受信信号に
加えられた歪を除去するごとく動作する。In the figure, a transmitter 51a and a receiver 52a use the same frequency. Therefore, the antenna switch 56m connects the transmitter 51a to the antenna 53a during transmission, and connects the receiver 52a to the antenna 53a during reception. The propagation path characteristic detector 55a detects the characteristics of the propagation path from the received signal, and based on the detected characteristic, the equal volumetric capacity 57a operates to remove distortion added to the received signal.
等比容として、第5図に示すような遅延回路58−1〜
58−11末算器59−1〜59−n1加算器60から
なるトランスバーサル等化器を用いた場合、受信信号か
ら等比容のタップ係数り、を算出した上で等化を行なう
。As a constant volume, delay circuits 58-1 to 58-1 as shown in FIG.
When a transversal equalizer consisting of adders 59-1 to 59-n1 and 60 is used, equalization is performed after calculating isovolume tap coefficients from the received signal.
第6図は、公知の相関検出を用いた伝搬路特性検出器(
第4図における55gあるいは55b)の構成と検出原
理の一例を示す図であって、(a)はMR威成因、(b
)〜 (e)は相関検波出力の各成分を示しており、6
1は相関検波器を、62はPN信号発生器を表わしてい
る。Figure 6 shows a propagation path characteristic detector (
55g or 55b) in FIG. 4 and a diagram showing an example of the detection principle, (a) is the MR factor, (b)
) to (e) show each component of the correlation detection output, and 6
1 represents a correlation detector, and 62 represents a PN signal generator.
同図において、多重伝搬路を経由して受信された信号遅
延を伴なった信号をD (t)とする。In the figure, let D (t) be a signal with signal delay received via multiple propagation paths.
また、相関検波器61の出力の同相成分をI(1)、直
交成分をQ (t)とする。Further, let I(1) be the in-phase component of the output of the correlation detector 61, and let Q(t) be the orthogonal component.
時A’J t jにおけるI(t)およC/Q(t)の
振幅をiJ およc/Qjとしたとさ、+D (tJ
) I =F「ア1]b1となり、その位相角はj
an−’ (Qj/ I j)となる。Let the amplitudes of I(t) and C/Q(t) at time A'J t j be iJ and c/Qj, +D (tJ
) I =F'A1]b1, and its phase angle is j
an-' (Qj/Ij).
これに上って、時刻tjにおける遅延波のレベルと位相
から、伝搬路特性が分かる。In addition to this, the propagation path characteristics can be determined from the level and phase of the delayed wave at time tj.
実船には、これらの情報に基づき等比容のタップ係数設
定を行ない、受信信号の等化を行なう。On the actual ship, isovolume tap coefficients are set based on this information, and the received signal is equalized.
トランスバーサル等比容の伝達関数は、H(z) =
h、)+ +l 、 z−’十h 2 z−2+−・・
=+ h 、1−、 1n−1・・・・・・・・・・・
・ (1)で与えられる。The transversal isovolume transfer function is H(z) =
h,)+ +l, z-'10h 2 z-2+-...
=+h, 1-, 1n-1・・・・・・・・・・・・
・Given by (1).
説明を簡単にするため、受信波として主波と遅延波1波
が存在する場合について説明すると、遅延波の遅延時間
をに、主波とi!i!延波のレベル比をTとしたとき、
伝搬路の伝達関数は、C(z)=1十T2−K ・
・・・・・・・・・・・ (2)で与えられる。To simplify the explanation, we will explain the case where there is a main wave and one delayed wave as received waves.If the delay time of the delayed wave is set, the main wave and i! i! When the level ratio of the spread wave is T,
The transfer function of the propagation path is C(z)=10T2−K ・
・・・・・・・・・・・・ It is given by (2).
等比容は (2) を等化するも のであり、 (2〉 = 1 /C (7) (3) が等北条rp ’rある。The isovolume is (2) Also equalizes It is, (2> = 1 /C (7) (3) There is Tohojo rp'r.
とすることにより、タップ係数hkが与えられる。By doing so, the tap coefficient hk is given.
なお、Tは前述の伝搬路特性検出器で得られた信号から
、T=l D21/I D、Iとして与えられる。Note that T is given as T=l D21/I D,I from the signal obtained by the aforementioned propagation path characteristic detector.
また、にはり、 とD2の時間間隔から与えられる。実
際には、7エーノングによりTおよびには変動するが、
その変動周期内に最低1回のトレーニング信号を送信す
ることで等化可能である。Also, it is given by the time interval between and D2. In reality, T and will vary depending on the seven aeons, but
Equalization is possible by transmitting a training signal at least once within the fluctuation period.
複数の遅延波が存在する場合にも同様にして、タップ係
数を求めることができる。また、等比容の種類が異なる
場合にも、若干の相違があるが、タップ係数を求めるこ
とができる。Tap coefficients can be found in the same manner even when a plurality of delayed waves exist. Further, even when the types of isovolumes are different, tap coefficients can be obtained, although there are some differences.
このように等化処理は複雑であり、処理系の規喉が大き
くなることから、従来、特に小型軽量化が要求される携
帯形移動機で1よ適用が困難である11か、等化のため
の処理時間が大きい等の問題点があった。As described above, equalization processing is complex and requires a large processing system, so it has traditionally been difficult to apply it to portable mobile devices that require small size and light weight11. There were problems such as a long processing time.
本発明は、このような従来の問題点に鑑み、移動磯側の
負担の少ない等化手段を提供することを目的としている
。In view of these conventional problems, it is an object of the present invention to provide an equalization means that reduces the burden on the movable shore.
本発明によれば、上述の目的は前記特許al′!求の範
囲に記載した手段により遠戚される。According to the invention, the above-mentioned object is achieved according to said patent al'! The person is a distant relative by the means specified in the scope of the request.
すなわち、本発明は同一の周波数を用いる送信機と受信
機が同一のアンテナを切り替えて使用するごとく構成さ
れた無#it装置において、受信信号によってM線区搬
路の特性を検知する手段を具備せしめ、上記手段により
検知された無線伝搬路の特性に応じて、予め信号に該無
線伝搬路の特性による歪を相殺するごとき特性を与えで
送信する手段を設けた単一周波数通信方式における送信
装置である。That is, the present invention provides a non-IT device configured such that a transmitter and a receiver that use the same frequency switch and use the same antenna, which is equipped with means for detecting the characteristics of the M line path based on the received signal. and a transmitting device in a single frequency communication system, comprising means for transmitting a signal by giving characteristics in advance to cancel distortion due to the characteristics of the radio propagation path, according to the characteristics of the radio propagation path detected by the above-mentioned means. It is.
本発明は、上記手段によって、無線基地局側に等化I!
能を分担させることにより、前記問題点を角〒決し上う
とするものである。The present invention provides equalization I! on the radio base station side by the above means.
The aim is to resolve the above-mentioned problems by dividing the roles.
具体的には、無線基地局および移動局では、送受信を同
一の周波数を用いて時分割的に行なうことを+if提と
して、無線基地局に伝搬路特性を検知する装置を設ける
とともに、これによって、検知された伝搬路特性に応じ
て、該伝搬路特性によって生ずるであろう歪を相殺する
ごとき特性を有する等比容を具備し、無線基地局から移
動局への送信タイミングにおいて、無線基地局で送信信
号に対して前記等化器により等化を行なうものである。Specifically, the radio base station and the mobile station are provided with a device for detecting propagation path characteristics, assuming that the radio base station and the mobile station perform transmission and reception in a time-sharing manner using the same frequency. According to the detected propagation path characteristics, the wireless base station The equalizer performs equalization on the transmitted signal.
fIS1図は本発明の一実施例を示すブロック図である
。The fIS1 diagram is a block diagram showing one embodiment of the present invention.
同図に示すように、無線基地局側
置11、受信f&置12、アンテナ13、制御装置14
、伝搬路特性検出B15、アンテナ切換器16および等
比容17を有する。制御装ra14は送受信タイミング
指令、アンテナ切換器制御、送受信に使用する周波数設
定等の各種制御を行なう。As shown in the figure, a radio base station side position 11, a receiving f & position 12, an antenna 13, a control device 14
, a propagation path characteristic detection B15, an antenna switching device 16, and an equal volume 17. The control device ra14 performs various controls such as transmission and reception timing commands, antenna switch control, and frequency settings used for transmission and reception.
また、移動局2は送信装置21、受信装置22、アンテ
ナ23、制御回路24およびアンテナ切換器25を有す
る。制御回路24は、制御装置14と同様に送受信タイ
ミング指令、アンテナ切換制御、送受信に使用する周波
数設定等の各種制御を行なう。The mobile station 2 also includes a transmitting device 21, a receiving device 22, an antenna 23, a control circuit 24, and an antenna switching device 25. Similarly to the control device 14, the control circuit 24 performs various controls such as transmission and reception timing commands, antenna switching control, and frequency settings used for transmission and reception.
同図において、移動局の送信タイミングで、移動局から
送信された周波数fcの搬送波帯の信すは伝搬路3を経
由した後、7ンテナ13により受信され、アンテナ切換
器16を経由し受信装置12へ導かれる。受信装置12
t’は必要な復調が行なわれ、また、伝搬路特性検出器
15により伝搬路特性が検出され、該情報に基づき等比
容のタップ係数を設定する。In the figure, at the transmission timing of the mobile station, a carrier wave signal of frequency fc transmitted from the mobile station passes through the propagation path 3, is received by the seventh antenna 13, and then passes through the antenna switch 16 to the receiving device. Leads to 12. Receiving device 12
At t', necessary demodulation is performed, and the propagation path characteristic is detected by the propagation path characteristic detector 15, and isovolume tap coefficients are set based on this information.
等比容出力は受信出力端子19に出力される。The isovolume output is output to the reception output terminal 19.
さらに、無線基地局の送信タイミングにおいて、ベース
バンド変調信号は等比容17、送信装置11、アンテナ
切換器16およびアンテナ13を経由して送イSされる
。7ンテナ23により受信された該13号は、アンテナ
切換器25を経由して受信装置22に入力される。受信
vt置22では所要の検波、復調を行ない、受信出力端
子27に出力する。Furthermore, at the transmission timing of the wireless base station, the baseband modulated signal is transmitted via the geometric volume 17, the transmitter 11, the antenna switch 16, and the antenna 13. The No. 13 signal received by the No. 7 antenna 23 is input to the receiving device 22 via the antenna switch 25. The reception terminal 22 performs necessary detection and demodulation, and outputs the result to the reception output terminal 27.
!!l’s2図は上述の無線基地局および移動局の送受
信信号のフレーム構成およびタイミングの例を示す図で
あって、28は無線基地局側、29は移動局側の7レー
ム構威を表わしでいる。! ! Figure l's2 is a diagram showing an example of the frame structure and timing of transmission and reception signals of the above-mentioned radio base station and mobile station, in which 28 represents the 7-frame structure on the radio base station side, and 29 represents the 7-frame configuration on the mobile station side. There is.
また、同図中のINFBは無線基地局から移動局への情
報信号、INFMは移動局から無線栽地1.6への情報
信号、Aは伝搬路特性検出用13号(トレーニング4y
号)を示している。In addition, INFB in the same figure is an information signal from the wireless base station to the mobile station, INFM is the information signal from the mobile station to the wireless plantation 1.6, and A is No. 13 for propagation path characteristic detection (training 4y
No.).
前述のS線基地局および移動局の送受信は、同図に示す
ようなフレーム構成およびタイミングに従って行なわれ
る。Transmission and reception between the S-line base station and the mobile station described above are performed according to the frame structure and timing shown in the figure.
すなわち、移動局の送信タイミツフッM内のT、におい
で送信される信号〔トレーニング信号、たとえば、特定
のパターンを有するPN (疑似雑音)信号〕に基づい
て無線基地局側では伝搬路特性(伝搬遅延特性)を検出
する。In other words, the radio base station determines the propagation path characteristics (propagation delay characteristics).
検出法としては、例えば従来と同様の相関検出法が使用
できる。無線基地局では該検出結果に基づいて、等花器
のタップ係数を設定し、伝搬路特性に対応する受信信号
の等化を行ない、良好な復調出力を得る。As a detection method, for example, a correlation detection method similar to the conventional one can be used. Based on the detection result, the radio base station sets equal tap coefficients, equalizes the received signal corresponding to the propagation path characteristics, and obtains a good demodulated output.
この例では、トレーニング信号がフレーム内の最初の部
分シこある場合について示しているが、大隙には等花器
の動作を考慮してフレームの中央付近に置くことが多い
。This example shows a case where the training signal is placed in the first part of the frame, but it is often placed near the center of the frame in consideration of the movement of the large part.
無線基地局では、伝搬路の特性が前述の式(2)で与え
られたとき、送受信系の総合特性としで式(3)で与え
られる伝搬特性を実現すること2二より、遅延時間の影
響を除去することが一丁f尼である。In a wireless base station, when the characteristics of the propagation path are given by equation (2) above, the overall characteristics of the transmitting and receiving system are to achieve the propagation characteristics given by equation (3). It is important to remove the .
すなわち、ベースバンド変調信号に対して式(3)で与
えられる特性を与えることにより、受信側では受信信号
に対して何等の処理を加えることなく上記条件を満足す
ることができる。That is, by providing the characteristic given by equation (3) to the baseband modulated signal, the above condition can be satisfied without applying any processing to the received signal on the receiving side.
このことは、ベースバンド嚢調41号を前述の等花器を
経由した後、変調を施せばよいことを示しており、$1
図のMI或によって実現できる。This shows that it is only necessary to apply modulation to the baseband No. 41 after passing through the above-mentioned container, and the $1
This can be realized by the MI shown in the figure.
第3図は本発明の他の実施例を示す1072図である。FIG. 3 is a 1072 diagram showing another embodiment of the present invention.
本実施例によれば、移動局が高速で移動する上うな場合
に生じる、伝搬路特性の変動速度が速い場合においても
、良好な伝搬品質を確保することができる。According to this embodiment, good propagation quality can be ensured even when the propagation path characteristics change rapidly, which occurs when a mobile station moves at high speed.
ttS3図において、無線基地局1aは、送信装置31
、受信装置!32、アンテナ33、制御装置34、伝搬
路特性検出器35、アンテナ切換器36および等花器3
7を有する。制御装置34は送受信タイミング指令、ア
ンテナ切換器制御、送受信に使用する周波数設定等の各
種制御を行なう。In the ttS3 diagram, the wireless base station 1a is a transmitter 31
, receiving device! 32, antenna 33, control device 34, propagation path characteristic detector 35, antenna switching device 36, and flower vase 3
It has 7. The control device 34 performs various controls such as transmission/reception timing commands, antenna switch control, and frequency settings used for transmission and reception.
また、移動局2aは送信装置41、受信装置42、アン
テナ43、等化448、制御回路44、アンテナ切換器
45および伝搬路特性検出器=19を有する。制御回路
44は制御装置34と同vAHこ送受信タイミング指令
、アンテナ切換制御、送受信に使用する周波数設定等の
各種制御を行なう。Furthermore, the mobile station 2a includes a transmitter 41, a receiver 42, an antenna 43, an equalizer 448, a control circuit 44, an antenna switch 45, and a propagation path characteristic detector=19. The control circuit 44 performs various controls such as vAH transmission/reception timing commands, antenna switching control, and frequency setting used for transmission/reception.
同図において、移動局の送信タイミングで移動局から送
信された周波数fcの搬送波帯の信号は伝搬路3aを経
由した後、アンテナ33により受信され、アンテナ切換
器36を経由し受信装a32へ導かれる。該受信装置3
2では必要な復調が行なわれる6また、伝搬路特性検出
器35により伝搬路特性が検出され、該・18報に基づ
き等花器37のタップ係数を設定する。′g化容器出力
受信出力端子39に出力される6さらに、無線基地局の
送信タイミングにおいて、上記タップ係数等の等化器情
報を含むべ一7ンテナ切換器36およC/7ンテナ33
を経由して送信される。移動局において、アンテナ43
に上り受信された該信号は、アンテナ切換器45を経由
して受信装置42に入力され、検波される。受信装置1
!42の出力は、等花器48を通過したのち、受信出力
端子47に出力する。In the figure, a signal in the carrier band of frequency fc transmitted from the mobile station at the mobile station's transmission timing passes through the propagation path 3a, is received by the antenna 33, and is guided to the receiving device a32 via the antenna switch 36. It will be destroyed. The receiving device 3
In step 2, necessary demodulation is performed.In addition, the propagation path characteristics are detected by the propagation path characteristic detector 35, and the tap coefficients of the equal flower vase 37 are set based on the information. Furthermore, at the transmission timing of the wireless base station, the antenna switching unit 36 and the C/7 antenna 33 containing the equalizer information such as the tap coefficients are output to the receiving output terminal 39.
Sent via . At the mobile station, the antenna 43
The received signal is input to the receiving device 42 via the antenna switch 45 and detected. Receiving device 1
! The output of 42 passes through a flower vase 48 and then is output to a reception output terminal 47.
制御回路44は、無線基地局から送出された等化器情報
に基づいて、等花器48に対して指令を送りタップ係数
をプリセットする。そして、さらに、伝搬路特性検出器
49の主力に基づいて、より精密な設定を行なう。The control circuit 44 sends a command to the equalizer 48 to preset tap coefficients based on the equalizer information sent from the wireless base station. Further, more precise settings are made based on the main power of the propagation path characteristic detector 49.
これにより、移動局の等花器のみでタップ係数設定のた
めの演算処理を行なう″場合に比べ、処理が簡略化でき
る。As a result, the processing can be simplified compared to the case where the arithmetic processing for setting the tap coefficients is performed only by the mobile station.
無線基地局および移動局の送受信信号は、前述のように
第2図に示すようなフレームv4威およびタイミングに
従って行なわれるが、本実施例の場合、無線基地局の送
信タイミングの英字符Aで示した部分で、トレーニング
信号およびなお、わが国の自動車電話のように、無線基
地局と移動局の送信周波数が異なる場合には、各々の周
波数に上り伝搬路特性が異なることから、無線基地局で
の受信信号に対して適切な等化を行なうように等北米の
タップ係数を設定した上で、同一状態の等北米でベース
バンド変調信弓°に討して予め等化を行なっても、移動
局て゛の受イ3侶号は伝搬遅延の影響を除去できないた
め、良好な伝送品質が確保できない。本発明の前提であ
る、無線7.6地局と移動局て°同一周波数を使用する
理由はここにある。Transmission and reception signals between the radio base station and the mobile station are carried out according to the frame v4 frequency and timing as shown in FIG. 2 as described above. In addition, when the transmission frequency of the wireless base station and mobile station is different, as is the case with car phones in Japan, the uplink propagation path characteristics of each frequency are different, so the training signal and the transmission frequency at the wireless base station are different. Even if the tap coefficients in North America are set to perform appropriate equalization on the received signal, and the baseband modulation signal is set in North America under the same conditions and equalized in advance, the mobile station Since the third option cannot eliminate the influence of propagation delay, good transmission quality cannot be ensured. This is the reason why the wireless 7.6 base station and mobile station use the same frequency, which is the premise of the present invention.
」−記説明では、理解を容易にするため1基地局と1移
動局を対応させて説明しているが、本発明は、:れ番こ
限るものではなく、例えば複数移動局による時分割多重
伝搬等の場合にも適用できるものである。” - In order to facilitate understanding, one base station and one mobile station are explained in correspondence with each other. However, the present invention is not limited to this number; This can also be applied to cases such as propagation.
以上説明したように、本発明によれば、移動局において
等北米を用いた時の演算処理を全く右略したり、あるい
は簡略化できることから、回路規模等を小さくできるた
め、移動機の小型、軽量化、低消費電力化かり能となる
利点がある。As explained above, according to the present invention, it is possible to completely omit or simplify the arithmetic processing when using a mobile station, etc., so that the circuit scale etc. can be reduced. This has the advantage of reducing power consumption and reducing power consumption.
!161図は本発明の一実施例を示すブロック図、第2
図は送受信信号のフレーム構成とタイミングの例を示す
図、第3図は本発明の他の実施例を示すブロック図、第
4図は従来の受信等北米を用いた無線基地局および移動
局の構成の例を示すブロック図、第5図はトランスバー
サル等化器の構成の例を示す図、第6図は相関検出を用
いた伝搬路特性検出器の構成と検出原理を示す図である
。
1.1a・・・・・・無線基地局、 2.2a・・
・・・・移動局、 3.3a・・・・・・伝搬
路、11 .21 .31 .41 ・・・・・・送
信装置、12 、22 、32 、42 ・・
・・・・受信装置、13 、23 33 、 4
3 ・・・・・・ アンテナ、14.34 ・・・
・・・制御装置、 1535 、49 ・・
・・・・伝搬路特性検出器、IG、25.36 45
・・・・・・ アンテナ切換器、 17,37
.48 ・・・・・・等北米、18 、2G
、 38 、46 ・・・・・・送信入力端子、
19,27.39 47 ・・・・・・受信
出力端子、 24 44 ・・・・・・制御回路
、 28 ・・・・・・無線基地局のフレーム
m r&、 29 ・・・・・・移動局のフレーム
構成! FIG. 161 is a block diagram showing one embodiment of the present invention.
The figure shows an example of the frame structure and timing of transmitted and received signals, FIG. 3 is a block diagram showing another embodiment of the present invention, and FIG. 4 shows a radio base station and mobile station using conventional reception etc. FIG. 5 is a block diagram showing an example of the configuration, FIG. 5 is a diagram showing an example of the configuration of a transversal equalizer, and FIG. 6 is a diagram showing the configuration and detection principle of a propagation path characteristic detector using correlation detection. 1.1a... Wireless base station, 2.2a...
...Mobile station, 3.3a...Propagation path, 11. 21. 31. 41... Transmitting device, 12, 22, 32, 42...
...Receiving device, 13, 23 33, 4
3 ・・・・・・ Antenna, 14.34 ・・・
...control device, 1535, 49...
...Propagation path characteristic detector, IG, 25.36 45
・・・・・・ Antenna switch, 17, 37
.. 48 ... etc. North America, 18, 2G
, 38, 46......transmission input terminal,
19,27.39 47... Reception output terminal, 24 44... Control circuit, 28... Radio base station frame m r&, 29... Movement Station frame structure
Claims (1)
ナを切り替えて使用するごとく構成された無線装置にお
いて、 受信信号によって無線伝搬路の特性を検知する手段を具
備せしめ、 上記手段により検知された無線伝搬路の特性に応じて、
予め信号に該無線伝搬路の特性による歪を相殺するごと
き特性を与えて送信する手段を設けたことを特徴とする
単一周波数通信方式における送信装置。[Claims] In a radio device configured such that a transmitter and a receiver using the same frequency switch and use the same antenna, the radio device is provided with means for detecting the characteristics of a radio propagation path based on a received signal, Depending on the characteristics of the radio propagation path detected by the above means,
1. A transmitting device in a single frequency communication system, characterized in that the transmitter is provided with means for transmitting a signal with characteristics that cancel out distortion due to the characteristics of the radio propagation path.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1317534A JPH03179820A (en) | 1989-12-08 | 1989-12-08 | Transmission equipment in single frequency communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1317534A JPH03179820A (en) | 1989-12-08 | 1989-12-08 | Transmission equipment in single frequency communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03179820A true JPH03179820A (en) | 1991-08-05 |
Family
ID=18089326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1317534A Pending JPH03179820A (en) | 1989-12-08 | 1989-12-08 | Transmission equipment in single frequency communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03179820A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04207636A (en) * | 1990-11-30 | 1992-07-29 | Matsushita Electric Ind Co Ltd | Data transmitter |
EP0546445A2 (en) * | 1991-12-11 | 1993-06-16 | DETECON DEUTSCHE TELEPOST CONSULTING GmbH | Method for controlling a digital, cellular mobile communication network and mobile communication network using that method |
JP2001160771A (en) * | 1999-10-11 | 2001-06-12 | Robert Bosch Gmbh | Method for receiving radio signal in mobile station and radio station for transmitting/receiving radio signal |
WO2001045298A1 (en) * | 1999-12-17 | 2001-06-21 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for transmission with interference suppression |
US6252914B1 (en) | 1998-07-21 | 2001-06-26 | Nec Corporation | Radio communication system |
WO2009022423A1 (en) * | 2007-08-16 | 2009-02-19 | The Doshisha | Radio station and communication method |
-
1989
- 1989-12-08 JP JP1317534A patent/JPH03179820A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04207636A (en) * | 1990-11-30 | 1992-07-29 | Matsushita Electric Ind Co Ltd | Data transmitter |
EP0546445A2 (en) * | 1991-12-11 | 1993-06-16 | DETECON DEUTSCHE TELEPOST CONSULTING GmbH | Method for controlling a digital, cellular mobile communication network and mobile communication network using that method |
EP0546445A3 (en) * | 1991-12-11 | 1994-03-23 | Detecon Gmbh | |
US6252914B1 (en) | 1998-07-21 | 2001-06-26 | Nec Corporation | Radio communication system |
JP2001160771A (en) * | 1999-10-11 | 2001-06-12 | Robert Bosch Gmbh | Method for receiving radio signal in mobile station and radio station for transmitting/receiving radio signal |
WO2001045298A1 (en) * | 1999-12-17 | 2001-06-21 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for transmission with interference suppression |
US7133642B2 (en) | 1999-12-17 | 2006-11-07 | Matsushita Electric Industrial Co., Ltd. | Apparatus and method for interference suppression transmission |
WO2009022423A1 (en) * | 2007-08-16 | 2009-02-19 | The Doshisha | Radio station and communication method |
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