JPS5639638A - Radio communication system tolerant of transmission mutual modulation disturbance - Google Patents

Radio communication system tolerant of transmission mutual modulation disturbance

Info

Publication number
JPS5639638A
JPS5639638A JP11348779A JP11348779A JPS5639638A JP S5639638 A JPS5639638 A JP S5639638A JP 11348779 A JP11348779 A JP 11348779A JP 11348779 A JP11348779 A JP 11348779A JP S5639638 A JPS5639638 A JP S5639638A
Authority
JP
Japan
Prior art keywords
free
channels
station
channel
line signals
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
JP11348779A
Other languages
Japanese (ja)
Other versions
JPS5823782B2 (en
Inventor
Susumu Naka
Takafumi Shimizu
Tadashi Nishizaki
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 JP54113487A priority Critical patent/JPS5823782B2/en
Publication of JPS5639638A publication Critical patent/JPS5639638A/en
Publication of JPS5823782B2 publication Critical patent/JPS5823782B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W99/00—Subject matter not provided for in other groups of this subclass

Landscapes

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

Abstract

PURPOSE:To prevent an erroneous judgement from being caused by disturbance due to mutual modulation between transmission cycles by free-line numbers of different signal that correspond to channel numbers to a free channel. CONSTITUTION:For transmission from subordinate stations No.1-No.2 to base station 10, a radio wave is transmitted to even free channels CH1-CHn. Namely, free-line signals that show vacancy is sent to the free channels. Those free-line signals differ corresponding to channel numbers in 1:1 proportion. When there are problems of the useful life of a base-station transmitter and the electric power consumption of the station, free-line signals are sent to only one or two channels. Here, the number of free channels to which the free-line signals are sent is two. Consequently, transmission from the base station to the channel under mutual modulation and channels to which free-line signals are transmitted is performed at a time, only the free-line signal is received by a subordinate station while a channel weakened due to the mutual modulation is suppressed, so that the subordinate station can make a correct judgement.
JP54113487A 1979-09-06 1979-09-06 Wireless communication system resistant to transmission intermodulation interference Expired JPS5823782B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54113487A JPS5823782B2 (en) 1979-09-06 1979-09-06 Wireless communication system resistant to transmission intermodulation interference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54113487A JPS5823782B2 (en) 1979-09-06 1979-09-06 Wireless communication system resistant to transmission intermodulation interference

Publications (2)

Publication Number Publication Date
JPS5639638A true JPS5639638A (en) 1981-04-15
JPS5823782B2 JPS5823782B2 (en) 1983-05-17

Family

ID=14613529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54113487A Expired JPS5823782B2 (en) 1979-09-06 1979-09-06 Wireless communication system resistant to transmission intermodulation interference

Country Status (1)

Country Link
JP (1) JPS5823782B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5701590A (en) * 1994-07-08 1997-12-23 Nec Corporation Radio communication system for performing multi-channel access

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5701590A (en) * 1994-07-08 1997-12-23 Nec Corporation Radio communication system for performing multi-channel access

Also Published As

Publication number Publication date
JPS5823782B2 (en) 1983-05-17

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