JPS5698957A - Spectral diffusion communication system - Google Patents
Spectral diffusion communication systemInfo
- Publication number
- JPS5698957A JPS5698957A JP236480A JP236480A JPS5698957A JP S5698957 A JPS5698957 A JP S5698957A JP 236480 A JP236480 A JP 236480A JP 236480 A JP236480 A JP 236480A JP S5698957 A JPS5698957 A JP S5698957A
- Authority
- JP
- Japan
- Prior art keywords
- group
- base station
- frequency
- mobile stations
- interference
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/12—Arrangements for reducing cross-talk between channels
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To enable to reject the interference, by dividing each frequency chip into a plurality of groups in frequency division, and assigning each group to switching selection or each communication line. CONSTITUTION:Frequency chips f1, f2...fn detailed on a frequency axis with a given interval are divided into the group A, f1, f3...f2n-1, and group B, f2, f4... f2n so that they are not adjacent in the group. Further, the group A is assigned to mobile stations close to the base station and the group B is to mobile stations at a remote location from the base station respectively. When the frequency chips of each group are selected so that the reception selectivity of the base station is sufficient for adjacent frequency chips, the difficulty of reception of the group B can be prevented from the interference of the waves f2, f4...f2n from remote mobile stations by the waves f1, f3...f2n-1 from close mobile stations to the base station, allowing to avoid interference.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP236480A JPS5698957A (en) | 1980-01-11 | 1980-01-11 | Spectral diffusion communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP236480A JPS5698957A (en) | 1980-01-11 | 1980-01-11 | Spectral diffusion communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5698957A true JPS5698957A (en) | 1981-08-08 |
Family
ID=11527197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP236480A Pending JPS5698957A (en) | 1980-01-11 | 1980-01-11 | Spectral diffusion communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5698957A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0993654A (en) * | 1995-07-14 | 1997-04-04 | Canon Inc | Radio exchange method and radio communication system |
US6522637B1 (en) | 1998-02-09 | 2003-02-18 | Nec Corporation | System and method for allocating a carrier wave frequency of one channel between two carrier wave frequencies of another channel |
JP2009290493A (en) * | 2008-05-28 | 2009-12-10 | Ntt Docomo Inc | Radio communication system |
-
1980
- 1980-01-11 JP JP236480A patent/JPS5698957A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0993654A (en) * | 1995-07-14 | 1997-04-04 | Canon Inc | Radio exchange method and radio communication system |
US6522637B1 (en) | 1998-02-09 | 2003-02-18 | Nec Corporation | System and method for allocating a carrier wave frequency of one channel between two carrier wave frequencies of another channel |
JP2009290493A (en) * | 2008-05-28 | 2009-12-10 | Ntt Docomo Inc | Radio communication system |
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