JPS55117354A - Diversity transmission system - Google Patents

Diversity transmission system

Info

Publication number
JPS55117354A
JPS55117354A JP2341479A JP2341479A JPS55117354A JP S55117354 A JPS55117354 A JP S55117354A JP 2341479 A JP2341479 A JP 2341479A JP 2341479 A JP2341479 A JP 2341479A JP S55117354 A JPS55117354 A JP S55117354A
Authority
JP
Japan
Prior art keywords
angle modulation
waveform
digital
amplitude
modulation
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
JP2341479A
Other languages
Japanese (ja)
Other versions
JPS5928305B2 (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.)
Nippon Telegraph and Telephone Corp
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 JP2341479A priority Critical patent/JPS5928305B2/en
Publication of JPS55117354A publication Critical patent/JPS55117354A/en
Publication of JPS5928305B2 publication Critical patent/JPS5928305B2/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

Landscapes

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

Abstract

PURPOSE:To decrease easily the occurrence frequency of the code error by giving the amplitude or angle modulation for the simultaneous transmission in synchronization with the repetitive cycle of the digital modulation signal waveform and with the specific waveform of the complementary relation. CONSTITUTION:In the radio system using the digital angle modulation method, the output of angle modulation transmitter 3 which gives the angle modulation via digital signal 1 is branched off into two signals via power divider 4. These two signals receive the amplitude or angle modulation with the specific waveform which is applied to modulation input signal terminals 7 and 8 for satisfaction of the mutual complementary relation through amplitude modulators 5 and 6, and are then transmitted simultaneously through transmission antennas 10 and 11 each. The waveform mi(t) is shown by the equation, where n means the integer, T is the repetitive cycle of the digital angle modulation signal waveform and M is the branch number each. In such way, the equivalent effect can be obtained at the receiver side to the maximum ratio composite diversity reception system, thus decreasing the occurrence frequency of the code error.
JP2341479A 1979-03-02 1979-03-02 Diversity transmission method Expired JPS5928305B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2341479A JPS5928305B2 (en) 1979-03-02 1979-03-02 Diversity transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2341479A JPS5928305B2 (en) 1979-03-02 1979-03-02 Diversity transmission method

Publications (2)

Publication Number Publication Date
JPS55117354A true JPS55117354A (en) 1980-09-09
JPS5928305B2 JPS5928305B2 (en) 1984-07-12

Family

ID=12109828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2341479A Expired JPS5928305B2 (en) 1979-03-02 1979-03-02 Diversity transmission method

Country Status (1)

Country Link
JP (1) JPS5928305B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10239063A1 (en) * 2002-08-26 2004-03-25 Siemens Ag Data symbol transmission method for communications system with simultaneous transmission of at least 2 data symbols via antenna element selected in dependence on data symbol coding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01121405U (en) * 1988-02-15 1989-08-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10239063A1 (en) * 2002-08-26 2004-03-25 Siemens Ag Data symbol transmission method for communications system with simultaneous transmission of at least 2 data symbols via antenna element selected in dependence on data symbol coding

Also Published As

Publication number Publication date
JPS5928305B2 (en) 1984-07-12

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