JPS6331139B2 - - Google Patents
Info
- Publication number
- JPS6331139B2 JPS6331139B2 JP56106519A JP10651981A JPS6331139B2 JP S6331139 B2 JPS6331139 B2 JP S6331139B2 JP 56106519 A JP56106519 A JP 56106519A JP 10651981 A JP10651981 A JP 10651981A JP S6331139 B2 JPS6331139 B2 JP S6331139B2
- Authority
- JP
- Japan
- Prior art keywords
- carrier wave
- circuit
- phase modulator
- quadrature phase
- output
- 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.)
- Expired
Links
- 238000009499 grossing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010295 mobile communication Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
- H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
- H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56106519A JPS589459A (ja) | 1981-07-08 | 1981-07-08 | 直交形位相変調器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56106519A JPS589459A (ja) | 1981-07-08 | 1981-07-08 | 直交形位相変調器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS589459A JPS589459A (ja) | 1983-01-19 |
JPS6331139B2 true JPS6331139B2 (ko) | 1988-06-22 |
Family
ID=14435648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56106519A Granted JPS589459A (ja) | 1981-07-08 | 1981-07-08 | 直交形位相変調器 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS589459A (ko) |
-
1981
- 1981-07-08 JP JP56106519A patent/JPS589459A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS589459A (ja) | 1983-01-19 |
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