JPS5639638A - Radio communication system tolerant of transmission mutual modulation disturbance - Google Patents
Radio communication system tolerant of transmission mutual modulation disturbanceInfo
- 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
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.
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)
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 |
-
1979
- 1979-09-06 JP JP54113487A patent/JPS5823782B2/en not_active Expired
Cited By (1)
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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