JPS60116256A - Receiver - Google Patents
ReceiverInfo
- Publication number
- JPS60116256A JPS60116256A JP58225285A JP22528583A JPS60116256A JP S60116256 A JPS60116256 A JP S60116256A JP 58225285 A JP58225285 A JP 58225285A JP 22528583 A JP22528583 A JP 22528583A JP S60116256 A JPS60116256 A JP S60116256A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- carrier
- output
- detector
- pll
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
- H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
- H04L27/2272—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals using phase locked loops
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この+a 明tt 、データ伝送においてフェーシング
の影響全軽減するだめの移動無線用受イa装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This invention relates to a receiving device for mobile radio that is intended to completely reduce the influence of facing in data transmission.
従来この柿の装置dとして2・1図に示すものがめった
。Conventionally, the persimmon device d shown in Figure 2.1 was rarely used.
図においてtlliJ:受4?I用アンテナ、(2)は
このアンテナより入力される所要の電波を受信し、中間
同波数に変換して増幅する受信増幅器、(3)はこの受
信増幅器から出力される信号を検波し、データを復調す
るため、PLL同期回路を有したデータ復調器である。In the diagram tlliJ: Uke 4? I antenna, (2) is a reception amplifier that receives the required radio wave input from this antenna, converts it to the same intermediate wave number and amplifies it, and (3) detects the signal output from this reception amplifier and converts it into data. This is a data demodulator with a PLL synchronization circuit to demodulate the data.
次に動作について説明する。アンテナtl+から入力さ
れた電波は受信jIG咄器(2)により所要の′−波の
み選択さシシ、中1−周波数に賀換されて」部幅される
。この受着(」口幅器121から出力された18号は、
PLLによるキャリア同期回路、あるいはPLLによる
クロック再生回路全通してデータが復調される。Next, the operation will be explained. The radio waves inputted from the antenna tl+ are selected by the receiver (2) and converted to only the necessary 1-waves, which are then converted to 1-frequency waves. No. 18 outputted from this receiving device 121 is
Data is demodulated through a carrier synchronization circuit using a PLL or a clock recovery circuit using a PLL.
従来の移動無線用受信装置は以上のように構成されてい
て、PLLのループ定数は固定であるため商運フェージ
ング時にあるポ界以上のデータ誤り率(フェージングフ
ロア−]が大きいという入点があった。Conventional mobile radio receivers are configured as described above, and since the loop constant of the PLL is fixed, there is a problem that the data error rate (fading floor) is greater than a certain point during commercial fading. Ta.
この発明は上記のような従来のものの欠点全除去するた
めになされたもので、フェージングにより1界か弱くな
る期間を検出し、PLL回系のループ定数を可変にして
高速フェージング吋のデータ、1すり率?軽減する(支
)信装置を提供することを目的としている。This invention was made in order to eliminate all the drawbacks of the conventional ones as described above. It detects the period when the first field becomes weaker due to fading, and changes the loop constant of the PLL circuit to change the data after high-speed fading. rate? The purpose is to provide a communication device that reduces the
以下、このつと明の一メ雄側?図Vこついて説明する。 What follows is Konotsu and Akira Kazuo's side? Figure V will be explained in detail.
第2図において、符号(1)は従来の2・lOものと同
一である。(4)および(5)(は入力電界に比例した
Do 電圧を発生するキャリア検波器(I)お工び(I
llで、141 I′i!iめ長i4フェージングによ
る屯界踵度の尖化に服従できる検波時定数で1・j・4
成され、(5)はフェージング副波数に比べ十分大きな
検波時ボ叔で14乍成されてbる016)はフェージン
グフロアが生じる入力電界の時に、キャリア検波器(4
)と(5)の伊波田力電圧を比軟し、キャリア検波器(
4)の朔波成圧が・eヤリア倹波器)5)の検波亀圧よ
シ小さいときにrHJ電圧を出方し、それ以外はrLJ
74 Ifを出力する祇圧比蛇器である。(7)は電圧
比I収器16)の出力がrJ(J、rbJでPLLのル
ープ定数を可変できるデータ復調器である。In FIG. 2, the symbol (1) is the same as that of the conventional 2.lO. (4) and (5) (are a carrier detector (I) that generates a Do voltage proportional to the input electric field;
ll, 141 I′i! The detection time constant is 1, j, 4, which can be subjected to the sharpening of the field heel due to i-length i4 fading.
(5) is composed of 14 peaks at the time of detection, which is sufficiently large compared to the number of fading subwaves.
) and (5), the Ibada power voltage is softened, and the carrier detector (
When the wave forming pressure in 4) is smaller than the detection turtle pressure in 5), the rHJ voltage is output, otherwise the rLJ
This is a pressure ratio regulator that outputs 74 If. (7) is a data demodulator in which the output of the voltage ratio I collector 16) is rJ (J, rbJ), and the loop constant of the PLL can be varied.
次に動作eこついて説明する。アンテナfi+から入力
された4波は受イa増幅滲(2)により所要の′α波の
み選択され、中間周波数に変換されて増1向される。増
幅されたR−号Qまデータ復調器131および8(−ヤ
リア検波器+41 、151に入力される。そヤリア4
・検波器(4)に入力された信号は冒速フェージングに
よるぼ異強度の変化に追従できる検波回路により横波さ
れDo 電圧に変換される。キャリア4帖波器15)K
人力された4g号は上記検波器14)の検波時定数に比
べ十分大きな時定数でもって横波さ几入力市界強度の平
」句レベルに対層したDC電圧に友換される。これらキ
ャリア検波器141.(5)によって出力されたD04
圧は、キャリア検波・1父器(6)によシ′電圧比較さ
れ、入力1界が平均レベル以下つまシ、キャリア検波器
(4)の1圧をキャリア検波器15)の′電圧より小さ
いときに「H」′電圧が、それ以外のときrLJ電圧が
出力される。Next, the operation e will be explained. Of the four waves input from the antenna fi+, only the required 'α waves are selected by the receiver a amplification (2), converted to an intermediate frequency, and amplified. The amplified R-signal Q is input to the data demodulators 131 and 8 (-Yaria detector +41, 151.
- The signal input to the detector (4) is transversely waved by a detection circuit that can roughly follow changes in intensity due to speed fading and is converted into a Do voltage. Carrier 4-channel wave device 15) K
The manually input signal 4g is converted into a DC voltage with a time constant that is sufficiently larger than the detection time constant of the above-mentioned wave detector 14), and the transverse wave is converted into a DC voltage that is at the level of the normal level of the input market strength. These carrier detectors 141. D04 output by (5)
The voltage of the carrier detector (4) is compared with the voltage of the carrier detector (6), and if the input field is below the average level, the voltage of the carrier detector (4) is smaller than the voltage of the carrier detector (15). At times, the "H" voltage is output, and at other times, the rLJ voltage is output.
比l欧慕(6)により出力された信号はデータ復調器(
7)に入力され、PLLのループ定数全可変することに
より、高速7工−ジ/グ時のデータ誤り率金軽減する。The signal outputted by Hirou (6) is sent to a data demodulator (
7), and by fully varying the PLL loop constant, the data error rate during high-speed 7-engine processing is reduced.
1メ上のようeζ、この発明によれば、高速フェージン
グ時VcPLLのループ定数を可変できるように構成し
たので、フェージングフロアのでさる′d界強度以上に
おいて、データ誤り率が14ン蝋できる妙l果がある。As mentioned above, according to this invention, the loop constant of the VcPLL is configured to be variable during high-speed fading, so the data error rate can be reduced to 14% when the field strength exceeds the fading floor. There is fruit.
Δ′1図は従来の仔励ノ11(線用の欠信装置を示すブ
ロック図、第2図はこの究明の一実施例による移動無線
用の父(1’f装置を示アブロック図であjIl−−−
アンテナ、・2)−一一受伯珀幅器、+31−−−デー
タ仮調器、+41−−−キャリア餌、皮器(I)、+5
1−−−キャリア検波器(lIl、+61−−一電圧比
較器。
なお、1甲、同一符号は同一、”i)”cは1・目当部
分を示す。
代理人 大 岩 増 雄
第1図
第2図
手続補正前(自発)
特許庁長官殿
1、事件の表示 特願昭58−225285号2、発明
の名称
受 信 装 置
3−補正をする者
代表者片山仁へ部
4、代理人
(1)明細書をつぎのとおり訂正する。FIG. AjIl ---
Antenna, ・2)-11 receiver, +31--Data provisional device, +41--Carrier bait, skin device (I), +5
1--Carrier detector (lIl, +61--1 voltage comparator. 1A, the same reference numerals are the same, "i" and "c" indicate 1 and the target part. Agent Masuo Oiwa Figure 1 Figure 2 Procedure before amendment (on his own initiative) Commissioner of the Japan Patent Office 1 Display of case Japanese Patent Application No. 58-225285 2 Invention title receiving device 3 - Representative of the person making the amendment To Hitoshi Katayama, Part 4, Agent (1) amend the statement as follows.
Claims (1)
LL)i介して復調するものにおいて、住いに異なる検
波時定数f!:何し、上記受信信号をそれぞれ検波出力
する1対のキャリア検波器と、この両キャリア検波器の
検波出力レベルを比較する比較器を備え、上記比較器の
比較出力に応じて上記位相同期回路のループ定数を制御
すること全特徴とする受信装置。The received signal is passed through a phase synchronized circuit (P
LL) In the case of demodulation via i, different detection time constants f! : What, it is equipped with a pair of carrier detectors that detect and output the above-mentioned received signals, and a comparator that compares the detection output levels of both carrier detectors, and the phase-locked circuit according to the comparison output of the above-mentioned comparator. A receiving device characterized by controlling a loop constant of.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58225285A JPS60116256A (en) | 1983-11-28 | 1983-11-28 | Receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58225285A JPS60116256A (en) | 1983-11-28 | 1983-11-28 | Receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60116256A true JPS60116256A (en) | 1985-06-22 |
Family
ID=16826934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58225285A Pending JPS60116256A (en) | 1983-11-28 | 1983-11-28 | Receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60116256A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0372006A1 (en) * | 1987-10-30 | 1990-06-13 | FERNANDEZ, Emilio A | Improved paging device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513863A (en) * | 1974-07-01 | 1976-01-13 | Hitachi Electronics | Am fukuchohoshiki |
-
1983
- 1983-11-28 JP JP58225285A patent/JPS60116256A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513863A (en) * | 1974-07-01 | 1976-01-13 | Hitachi Electronics | Am fukuchohoshiki |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0372006A1 (en) * | 1987-10-30 | 1990-06-13 | FERNANDEZ, Emilio A | Improved paging device |
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