JPS5542402A - Diversity reception system - Google Patents

Diversity reception system

Info

Publication number
JPS5542402A
JPS5542402A JP11454178A JP11454178A JPS5542402A JP S5542402 A JPS5542402 A JP S5542402A JP 11454178 A JP11454178 A JP 11454178A JP 11454178 A JP11454178 A JP 11454178A JP S5542402 A JPS5542402 A JP S5542402A
Authority
JP
Japan
Prior art keywords
received
detection
waveform
local oscillator
plural number
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
JP11454178A
Other languages
Japanese (ja)
Other versions
JPS5928304B2 (en
Inventor
Kenkichi Hiraide
Takeshi Hattori
Fumiyuki Adachi
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP11454178A priority Critical patent/JPS5928304B2/en
Priority to GB7914338A priority patent/GB2023971B/en
Priority to US06/035,538 priority patent/US4397036A/en
Priority to DE2918269A priority patent/DE2918269C3/en
Priority to NLAANVRAGE7903609,A priority patent/NL176624C/en
Priority to SE7904058A priority patent/SE442934B/en
Publication of JPS5542402A publication Critical patent/JPS5542402A/en
Publication of JPS5928304B2 publication Critical patent/JPS5928304B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • 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
    • H04B7/0865—Independent weighting, i.e. weights based on own antenna reception parameters

Landscapes

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

Abstract

PURPOSE:To reduce the occurrence frequency of the code error caused by the multi- path fading or the like by giving the compounding and detection to plural number of reception signals which are obtained through the frequency conversion via the output of the local oscillator received the amplitude modulation with the specified waveform. CONSTITUTION:Frequency conversion 3 and 4 are given to the reception signals via the output of local oscillator 9 which received the amplitude modulation with the waveform that is synchronized with the repetive cycle of the digital angle modulation signal waveform and satisfies the mutual complementary relation, i.e., Eq. (I). The plural number of signals thus obtained are compounded and received 10 to be then given delay detection 11 and integration detection 12. In this way, the occurrence frequency of the code error caused by the multi-path fading or the like can be reduced.
JP11454178A 1978-05-10 1978-09-20 Diversity reception method Expired JPS5928304B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP11454178A JPS5928304B2 (en) 1978-09-20 1978-09-20 Diversity reception method
GB7914338A GB2023971B (en) 1978-05-10 1979-04-25 Digital signal transmission system
US06/035,538 US4397036A (en) 1978-05-10 1979-05-03 Diversity system
DE2918269A DE2918269C3 (en) 1978-05-10 1979-05-07 Diversity system for the transmission of an angle-modulated digital signal
NLAANVRAGE7903609,A NL176624C (en) 1978-05-10 1979-05-08 DIVERSITY SYSTEM.
SE7904058A SE442934B (en) 1978-05-10 1979-05-09 DIVERSITY SYSTEM FOR TRANSFER OF AN ANGLE MODULATED DIGITAL SIGNAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11454178A JPS5928304B2 (en) 1978-09-20 1978-09-20 Diversity reception method

Publications (2)

Publication Number Publication Date
JPS5542402A true JPS5542402A (en) 1980-03-25
JPS5928304B2 JPS5928304B2 (en) 1984-07-12

Family

ID=14640339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11454178A Expired JPS5928304B2 (en) 1978-05-10 1978-09-20 Diversity reception method

Country Status (1)

Country Link
JP (1) JPS5928304B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5789102A (en) * 1980-11-21 1982-06-03 Shin Meiwa Ind Co Ltd Servo system incorporating digital limiter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5789102A (en) * 1980-11-21 1982-06-03 Shin Meiwa Ind Co Ltd Servo system incorporating digital limiter

Also Published As

Publication number Publication date
JPS5928304B2 (en) 1984-07-12

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