JPS53137657A - Phase demodulation unit - Google Patents
Phase demodulation unitInfo
- Publication number
- JPS53137657A JPS53137657A JP5219277A JP5219277A JPS53137657A JP S53137657 A JPS53137657 A JP S53137657A JP 5219277 A JP5219277 A JP 5219277A JP 5219277 A JP5219277 A JP 5219277A JP S53137657 A JPS53137657 A JP S53137657A
- Authority
- JP
- Japan
- Prior art keywords
- demodulation unit
- phase demodulation
- waves
- section
- quadruple
- 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
- 230000006866 deterioration Effects 0.000 abstract 1
- 230000007257 malfunction Effects 0.000 abstract 1
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
Abstract
PURPOSE: To prevent the malfunction even with deterioration of received CNR, by forming the unique words at pre-amble section with duplex phase PSK waves and the data section with quadruple PSK waves.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5219277A JPS5855709B2 (en) | 1977-05-07 | 1977-05-07 | phase demodulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5219277A JPS5855709B2 (en) | 1977-05-07 | 1977-05-07 | phase demodulator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53137657A true JPS53137657A (en) | 1978-12-01 |
JPS5855709B2 JPS5855709B2 (en) | 1983-12-10 |
Family
ID=12907923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5219277A Expired JPS5855709B2 (en) | 1977-05-07 | 1977-05-07 | phase demodulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5855709B2 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01190152A (en) * | 1987-12-04 | 1989-07-31 | Motorola Inc | Tdma radio system using bpsk synchronization for qpsk signal receiving random phase variation and multi-pass fading |
WO1999005835A1 (en) * | 1997-07-24 | 1999-02-04 | Kabushiki Kaisha Kenwood | Circuit for detecting the phase of received signal |
WO1999034569A1 (en) * | 1997-12-26 | 1999-07-08 | Kabushiki Kaisha Kenwood | Carrier reproduction circuit |
WO1999034570A1 (en) * | 1997-12-26 | 1999-07-08 | Kabushiki Kaisha Kenwood | Digital demodulator |
US6256357B1 (en) | 1992-03-26 | 2001-07-03 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6549716B1 (en) | 1992-03-26 | 2003-04-15 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6697440B1 (en) | 1998-02-25 | 2004-02-24 | Kabushiki Kaisha Kenwood | Demodulator of receiver |
USRE38483E1 (en) | 1992-03-26 | 2004-03-30 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6724976B2 (en) | 1992-03-26 | 2004-04-20 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6728467B2 (en) | 1992-03-26 | 2004-04-27 | Matsushita Electric Industrial Co., Ltd. | Communication system |
-
1977
- 1977-05-07 JP JP5219277A patent/JPS5855709B2/en not_active Expired
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01190152A (en) * | 1987-12-04 | 1989-07-31 | Motorola Inc | Tdma radio system using bpsk synchronization for qpsk signal receiving random phase variation and multi-pass fading |
USRE38483E1 (en) | 1992-03-26 | 2004-03-30 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US7280806B2 (en) | 1992-03-26 | 2007-10-09 | Matsushita Electric Industrial Co., Ltd. | Communication system |
USRE39111E1 (en) | 1992-03-26 | 2006-05-30 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6256357B1 (en) | 1992-03-26 | 2001-07-03 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6549716B1 (en) | 1992-03-26 | 2003-04-15 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6728467B2 (en) | 1992-03-26 | 2004-04-27 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6724976B2 (en) | 1992-03-26 | 2004-04-20 | Matsushita Electric Industrial Co., Ltd. | Communication system |
WO1999005835A1 (en) * | 1997-07-24 | 1999-02-04 | Kabushiki Kaisha Kenwood | Circuit for detecting the phase of received signal |
US6690745B1 (en) | 1997-07-24 | 2004-02-10 | Kabushiki Kaisha Kenwood | Circuit for detecting the phase of received signal |
US6639951B1 (en) | 1997-12-26 | 2003-10-28 | Kabushiki Kaisha Kenwood | Digital demodulator |
US6700940B1 (en) | 1997-12-26 | 2004-03-02 | Kabushiki Kaisha Kenwood | Carrier reproduction circuit |
WO1999034570A1 (en) * | 1997-12-26 | 1999-07-08 | Kabushiki Kaisha Kenwood | Digital demodulator |
WO1999034569A1 (en) * | 1997-12-26 | 1999-07-08 | Kabushiki Kaisha Kenwood | Carrier reproduction circuit |
US6697440B1 (en) | 1998-02-25 | 2004-02-24 | Kabushiki Kaisha Kenwood | Demodulator of receiver |
Also Published As
Publication number | Publication date |
---|---|
JPS5855709B2 (en) | 1983-12-10 |
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