JPS6416149A - Transmission power control system - Google Patents

Transmission power control system

Info

Publication number
JPS6416149A
JPS6416149A JP62172340A JP17234087A JPS6416149A JP S6416149 A JPS6416149 A JP S6416149A JP 62172340 A JP62172340 A JP 62172340A JP 17234087 A JP17234087 A JP 17234087A JP S6416149 A JPS6416149 A JP S6416149A
Authority
JP
Japan
Prior art keywords
transmission power
reception
threshold
circuit
receiver
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
Application number
JP62172340A
Other languages
Japanese (ja)
Inventor
Takayuki Ozaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62172340A priority Critical patent/JPS6416149A/en
Priority to KR1019880008494A priority patent/KR940010629B1/en
Publication of JPS6416149A publication Critical patent/JPS6416149A/en
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/14—Apparatus for threading warp stop-motion droppers, healds, or reeds
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames

Abstract

PURPOSE:To accurately control the transmission power in consideration of the communication quality without interfering with another line, by controlling the transmission power of the transmission side on the reception side only when the reception level and the bit error rate satisfy prescribed conditions together. CONSTITUTION:Each receiver of a receiver group 1 in a reception station converts the input signal to an intermediate frequency signal by a reception part Rx and sends it to an AGC circuit. A reception level discriminating circuit 2 discriminates whether reception levels on all lines exceed a threshold or not in accordance with control voltages of respective AGC circuits, and the circuit 2 outputs '1' when they exceed the threshold. Parity check of the demodulated signal from each demodulator DEM is performed at intervals of a certain time by a bit error rate discriminating circuit 3 to obtain the bit error rate, and it is compared with a threshold, and logical signal '1' is outputted if it is lower than the threshold. When receiving logical signals '1' from discriminating circuits 2 and 3, an AND gate 4 energizes a a transmitter 5 to transmit a transmission power control signal to a receiver 6 on the side of the transmission station. In the receiver 6, the transmission power control signal is given to a transmission power control circuit 7 and a variable attenuator ATT is controlled to reduce the transmission power from each transmission part Tx.
JP62172340A 1987-07-10 1987-07-10 Transmission power control system Pending JPS6416149A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62172340A JPS6416149A (en) 1987-07-10 1987-07-10 Transmission power control system
KR1019880008494A KR940010629B1 (en) 1987-07-10 1988-07-08 Heddle magazine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62172340A JPS6416149A (en) 1987-07-10 1987-07-10 Transmission power control system

Publications (1)

Publication Number Publication Date
JPS6416149A true JPS6416149A (en) 1989-01-19

Family

ID=15940089

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62172340A Pending JPS6416149A (en) 1987-07-10 1987-07-10 Transmission power control system

Country Status (2)

Country Link
JP (1) JPS6416149A (en)
KR (1) KR940010629B1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60241336A (en) * 1984-05-10 1985-11-30 スタンダード・エレクトリツク・ローレンツ・アクチエンゲゼルシヤフト Radio wave system
JPS6143026A (en) * 1984-08-06 1986-03-01 Nippon Telegr & Teleph Corp <Ntt> System for controlling and transmitting received electric field

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60241336A (en) * 1984-05-10 1985-11-30 スタンダード・エレクトリツク・ローレンツ・アクチエンゲゼルシヤフト Radio wave system
JPS6143026A (en) * 1984-08-06 1986-03-01 Nippon Telegr & Teleph Corp <Ntt> System for controlling and transmitting received electric field

Also Published As

Publication number Publication date
KR940010629B1 (en) 1994-10-24
KR890002460A (en) 1989-04-10

Similar Documents

Publication Publication Date Title
WO1999012288B1 (en) Free-space laser communications error control system
PH31695A (en) Dynamic control of transmitting power at a transmitter and attenuation at a receiver.
KR950012945B1 (en) Fm receiver with noise su££ression during rayleigh faded received signals
CA2304864A1 (en) Integrated power control and congestion control in a communication system
CA2268857A1 (en) Method and apparatus for determining the rate of received data in a variable rate communication system
RU96110195A (en) METHOD AND DEVICE FOR REDUCING AVERAGE TRANSMISSION POWER ON DOWNLINING LINES FROM CENTRAL STATIONS IN THE PROCESS OF &#34;SOFT&#34; TRANSMISSION
JPS57159148A (en) Adaptive modulation system
US4234959A (en) Dual threshold repeater squelch circuit
JPS6416149A (en) Transmission power control system
US3781890A (en) Radio transmitter receiver including level and antenna direction control circuitry
EP0367208A3 (en) Line interface circuit
JPS56122246A (en) Control system of transmission output
JPH04356825A (en) Radio equipment
US4744092A (en) Transparent error detection in half duplex modems
JPS5762640A (en) Mobile radio communication system
EP0088837B1 (en) Radio transmitting and receiving apparatus
IL91785A0 (en) Method and apparatus for controlling the sensitivity of radio receivers
JPS5885651A (en) Signal sending and receiving device
CA1189572A (en) Radio transmitting and receiving apparatus
JPS5683138A (en) Squeltch system
JPS58143635A (en) Transmission power controlling system of satellite communication
JPH04352529A (en) Transmission power control system
JPS56111369A (en) Time-division multiplex transmission equipment of subscriber&#39;s line
JPH04167836A (en) Radio communication system
JPS5732159A (en) Data transmission system