JPS5757036A - Spectrum diffusion receiver - Google Patents

Spectrum diffusion receiver

Info

Publication number
JPS5757036A
JPS5757036A JP55131473A JP13147380A JPS5757036A JP S5757036 A JPS5757036 A JP S5757036A JP 55131473 A JP55131473 A JP 55131473A JP 13147380 A JP13147380 A JP 13147380A JP S5757036 A JPS5757036 A JP S5757036A
Authority
JP
Japan
Prior art keywords
demodulator
output
reverse diffusion
constant
detector
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
JP55131473A
Other languages
Japanese (ja)
Other versions
JPS6335137B2 (en
Inventor
Yoshio Nakamura
Goro Oshima
Hiroyasu Nakamura
Kenji Yamada
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 JP55131473A priority Critical patent/JPS5757036A/en
Publication of JPS5757036A publication Critical patent/JPS5757036A/en
Publication of JPS6335137B2 publication Critical patent/JPS6335137B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques

Landscapes

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

Abstract

PURPOSE:To improve stability of a reverse diffusion demodulation, by making the input level to a reverse diffusion demodulator constant. CONSTITUTION:An input signal is converted to an intermediate frequency by a receiving frequency converter 11 and is applied to an IF.AGC amplifier 12. This intermediate frequency has the output overall level controlled to a constant value by a detector D1 and a control circuit 13. The output of the amplifier 12 is given to a reverse diffusion demodulator 14. This reversely diffused output has the output overall level controlled to a constant value in an IF.AGC amplifier 15 by a detector D2 and a control circuit 16. Consequently, the function of the demodulator is operated effectively and stably by making the input level to the reverse diffusion demodulator constant.
JP55131473A 1980-09-24 1980-09-24 Spectrum diffusion receiver Granted JPS5757036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55131473A JPS5757036A (en) 1980-09-24 1980-09-24 Spectrum diffusion receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55131473A JPS5757036A (en) 1980-09-24 1980-09-24 Spectrum diffusion receiver

Publications (2)

Publication Number Publication Date
JPS5757036A true JPS5757036A (en) 1982-04-06
JPS6335137B2 JPS6335137B2 (en) 1988-07-13

Family

ID=15058786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55131473A Granted JPS5757036A (en) 1980-09-24 1980-09-24 Spectrum diffusion receiver

Country Status (1)

Country Link
JP (1) JPS5757036A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5994952A (en) * 1982-11-19 1984-05-31 Clarion Co Ltd Receiver
JPS6292526A (en) * 1985-10-17 1987-04-28 Nec Home Electronics Ltd Method and equipment for spread spectrum power line carrier communication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5994952A (en) * 1982-11-19 1984-05-31 Clarion Co Ltd Receiver
JPS6292526A (en) * 1985-10-17 1987-04-28 Nec Home Electronics Ltd Method and equipment for spread spectrum power line carrier communication

Also Published As

Publication number Publication date
JPS6335137B2 (en) 1988-07-13

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