JPS567542A - Receiver for spectrum diffusion - Google Patents
Receiver for spectrum diffusionInfo
- Publication number
- JPS567542A JPS567542A JP8357979A JP8357979A JPS567542A JP S567542 A JPS567542 A JP S567542A JP 8357979 A JP8357979 A JP 8357979A JP 8357979 A JP8357979 A JP 8357979A JP S567542 A JPS567542 A JP S567542A
- Authority
- JP
- Japan
- Prior art keywords
- diffusion
- signal
- circuit
- diffusion modulation
- channel
- 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
- 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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To reduce the interference signal, by obtaining the signal component only, through the cancellation of the interrupting components of the synthesis circuit and of the re-diffusion modulation circuit at the synthesis circuit. CONSTITUTION:The narrow band signal picked up with the inverted diffusion modulation of the inversion diffusion modulation circuit 26 is re-diffused at the re-diffusion modulation circuit 28, and interference signal is obtained by synthesizing the signal synthesizing the re-diffusion signal of each channel with the reception signal in opposite phase at the synthesis circuit 31, this output and the re-diffusion signal of one channel are synthesized at the synthesis circuit 29, succeedingly inverse diffusion is made at the inverse diffusion modulation circuit 35, the interference signal is rejected via the filter 36 and the demodulation circuit 37, the output is fed to the inverse diffusion modulation circuit 35 to perform inversed diffusion modulation with the diffusion code to the channel. Thus, the interference signal can be eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54083579A JPS585545B2 (en) | 1979-06-29 | 1979-06-29 | spread spectrum receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54083579A JPS585545B2 (en) | 1979-06-29 | 1979-06-29 | spread spectrum receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS567542A true JPS567542A (en) | 1981-01-26 |
| JPS585545B2 JPS585545B2 (en) | 1983-01-31 |
Family
ID=13806399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54083579A Expired JPS585545B2 (en) | 1979-06-29 | 1979-06-29 | spread spectrum receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS585545B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5839137A (en) * | 1981-08-31 | 1983-03-07 | Matsushita Electric Ind Co Ltd | Synchronous detection system |
| JPS5848544A (en) * | 1981-09-17 | 1983-03-22 | Matsushita Electric Ind Co Ltd | Code synchronization detection circuit |
-
1979
- 1979-06-29 JP JP54083579A patent/JPS585545B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5839137A (en) * | 1981-08-31 | 1983-03-07 | Matsushita Electric Ind Co Ltd | Synchronous detection system |
| JPS5848544A (en) * | 1981-09-17 | 1983-03-22 | Matsushita Electric Ind Co Ltd | Code synchronization detection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS585545B2 (en) | 1983-01-31 |
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