JPS5767341A - Phase synthesizing space diversity system - Google Patents

Phase synthesizing space diversity system

Info

Publication number
JPS5767341A
JPS5767341A JP55143873A JP14387380A JPS5767341A JP S5767341 A JPS5767341 A JP S5767341A JP 55143873 A JP55143873 A JP 55143873A JP 14387380 A JP14387380 A JP 14387380A JP S5767341 A JPS5767341 A JP S5767341A
Authority
JP
Japan
Prior art keywords
phase
circuit
monitor
signal
control system
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.)
Granted
Application number
JP55143873A
Other languages
Japanese (ja)
Other versions
JPS5941331B2 (en
Inventor
Osamu Yamamoto
Akira Hamada
Hisafumi Mimura
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.)
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone Corp
Nippon Electric Co 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 NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55143873A priority Critical patent/JPS5941331B2/en
Publication of JPS5767341A publication Critical patent/JPS5767341A/en
Publication of JPS5941331B2 publication Critical patent/JPS5941331B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0851—Joint weighting using training sequences or error signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)

Abstract

PURPOSE:To monitor the control system with a high precision surely, by adding a monitor signal of a frequency lower than the response speed of the control system to the output of a counter, which indicates a rotary phase quantity, and by detecting the level of the monitor signal included in the control system by a circuit before addition of the monitor signal. CONSTITUTION:One of signals from inputs 1 and 2 is subjected to phase modulation for sensing by a phase modulator 3, and two signals are synthesized by a rotary phase shifter 4 to obtain an output 5. Amplitude-modulated wave components of the output 5 are detected by a detecting circuit 7 and are applied to a phase detecting circuit 11 of a phase control circuit 8 together with a sensing signal fc applied to the modulator 3. A gate circuit 12 to which a clock CL is inputted is controlled by positive and negative outputs of the circuit 11, and the clock CL is given to an up or down input of a counter 13 to obtain a value corresponding to the phase angle set to the phase shifter 4, and this value is added to an adder 14. This value is added to a signal obtained by converting digitally the monitor signal from a monitor signal generating circuit 20, and the obtained signal is applied to the phase shifter 4 through a ROM5 to monitor the control system.
JP55143873A 1980-10-14 1980-10-14 Phase synthesis space diversity method Expired JPS5941331B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55143873A JPS5941331B2 (en) 1980-10-14 1980-10-14 Phase synthesis space diversity method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55143873A JPS5941331B2 (en) 1980-10-14 1980-10-14 Phase synthesis space diversity method

Publications (2)

Publication Number Publication Date
JPS5767341A true JPS5767341A (en) 1982-04-23
JPS5941331B2 JPS5941331B2 (en) 1984-10-06

Family

ID=15348981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55143873A Expired JPS5941331B2 (en) 1980-10-14 1980-10-14 Phase synthesis space diversity method

Country Status (1)

Country Link
JP (1) JPS5941331B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61163732A (en) * 1985-01-12 1986-07-24 Fujitsu Ltd Phase monitoring circuit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01153523U (en) * 1988-04-15 1989-10-23
JPH0269315U (en) * 1988-11-15 1990-05-25
JPH0636030U (en) * 1992-05-13 1994-05-13 金杉 雅子 Floating glasses holder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61163732A (en) * 1985-01-12 1986-07-24 Fujitsu Ltd Phase monitoring circuit

Also Published As

Publication number Publication date
JPS5941331B2 (en) 1984-10-06

Similar Documents

Publication Publication Date Title
JPS5767341A (en) Phase synthesizing space diversity system
GB1536230A (en) Device for phase controlling a carrier wave and sidebands produced by a transmitter
GB1517655A (en) Method and circuit for determining the vector components of an oscillatory signal
GB1291378A (en) Method and apparatus for defining a physical vector
US2888195A (en) Device for predicting values of a fluctuating system at a predetermined future time
JPS54146567A (en) Frequency-voltage converter circuit
SU561169A2 (en) Driver for digital follow-up drive
GB1178411A (en) Non-Linear Servo-Control Devices
SU463935A1 (en) Device for entering kinematic corrections
JPS5786761A (en) Low speed detection circuit
SU426299A1 (en) DEVICE FOR ALIGNMENT ISOLATION
GB1528740A (en) Phase modulators
JPS57158567A (en) Frequency and voltage converting circuit
JPS57118413A (en) Automatic gain controlling system
SU935978A1 (en) Sinusoidal oscillation generator
JPS5460819A (en) Diversity receiving phase control system
SE7706449L (en) TRANSMITTER RECEIVER, SPECIAL FOR RADIOELECTRIC DISTANCE SATURATION
JPS57121355A (en) Automatic control system for carrier phase
JPS5660116A (en) Synchronous oscillation afc system
JPS57131143A (en) Timing extracting circuit
JPS55633A (en) Receiving unit
JPS5661669A (en) Radar device
FR2237250A1 (en) Electronic vector handling circuit - provides vector argument from its cartesian components e.g. for compass
JPS5662407A (en) Phase modulating circuit
JPS5693461A (en) Carrier wave reproducing circuit