CN110441741A - A method of realizing quadrature amplitude modulation - Google Patents
A method of realizing quadrature amplitude modulation Download PDFInfo
- Publication number
- CN110441741A CN110441741A CN201910626643.XA CN201910626643A CN110441741A CN 110441741 A CN110441741 A CN 110441741A CN 201910626643 A CN201910626643 A CN 201910626643A CN 110441741 A CN110441741 A CN 110441741A
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- China
- Prior art keywords
- transmitting
- signal
- phase
- amplitude modulation
- quadrature amplitude
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000010363 phase shift Effects 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/282—Transmitters
Abstract
The present invention relates to field of communication technology more particularly to a kind of methods for realizing quadrature amplitude modulation, wherein including step S1, using one first transmitting unit, with one first transmitting signal of transmitting；Step S2, using one second transmitting unit, with one second transmitting signal of transmitting；Step S3, one second postpones signal is obtained for postponing to the second transmitting signal with processing using a delay cell；Step S4, using a power combiner, the first transmitting signal and the second postpones signal are combined, to be modulated into a quadrature phase signal.The beneficial effect of technical solution of the present invention is: the second postpones signal that the first transmitting signal emitted by the first transmitting unit and the second transmitting signal of the second transmitting unit transmitting obtain after delay disposal is combined, to be modulated into a quadrature phase signal, realizes the extension from binary phase shift keying to quadrature phase shift keying and realize the effect of I/O modulation.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of methods for realizing quadrature amplitude modulation.
Background technique
Radar is mainly made of antenna, transmitter, receiver, signal processor and terminal device etc..Traditional radar system
System is formed simply by two single channel emission systems, and binary phase shift keying cannot be extended to quadrature phase shift keying, and
It not can be carried out quadrature amplitude modulation.
Therefore, for above-mentioned problem, become those skilled in the art's problem urgently to be resolved.
Summary of the invention
For the above-mentioned problems in the prior art, a kind of method for aiming at quadrature amplitude modulation is now provided.
Specific technical solution is as follows:
The present invention provides a kind of method for realizing quadrature amplitude modulation, wherein includes:
Step S1, using one first transmitting unit, with one first transmitting signal of transmitting；
Step S2, using one second transmitting unit, with one second transmitting signal of transmitting；
Step S3, one second is obtained with processing for postponing to the second transmitting signal using a delay cell
Postpones signal；
Step S4, using a power combiner, the first transmitting signal and second postpones signal are combined,
To be modulated into a quadrature phase signal.
Preferably, first transmitting unit includes:
One first attenuator, for adjusting the size of the first transmitting signal；
One first phase shifter, the input terminal of first phase shifter connect the output end of first attenuator, and being used for will
The first transmitting signal carries out binary phase shift；
One first power amplifier, the input terminal of first power amplifier connect the output of first phase shifter
End is amplified for the first transmitting signal after phase deflects.
Preferably, second transmitting unit includes:
One second attenuator, for adjusting the size of the second transmitting signal；
One second phase shifter, the input terminal of second phase shifter connect the output end of second attenuator, and being used for will
The second transmitting signal carries out binary phase shift；
One second power amplifier, the input terminal of second power amplifier connect the output of second phase shifter
End is amplified for the second transmitting signal after phase deflects.
Preferably, the delay cell is 90 degree of delay cells.
Preferably, first phase shifter and second phase shifter be 0 180 ° of phase shifters.
Preferably, first attenuator and second attenuator are adjustable attenuator.
Preferably, the quadrature phase signal includes octaphase-shift keying modulated signal or 16 phase quadrature amplitude modulations letter
Number or 32 phase quadrature amplitude modulation signals or 64 phase quadrature amplitude modulation signals etc..
The beneficial effect of technical solution of the present invention is: the first transmitting signal and the emitted by the first transmitting unit
The second postpones signal that second transmitting signal of two transmitting units transmitting obtains after delay disposal is combined, to be modulated into
One quadrature phase signal realizes the extension from binary phase shift keying to quadrature phase shift keying and realizes I/O modulation
Effect.
Detailed description of the invention
With reference to appended attached drawing, more fully to describe the embodiment of the present invention.However, appended attached drawing be merely to illustrate and
It illustrates, and is not meant to limit the scope of the invention.
Fig. 1 is the step flow chart of the embodiment of the present invention；
Fig. 2 is the functional block diagram of the embodiment of the present invention；
Fig. 3 is the first waveform diagram of the embodiment of the present invention；
Fig. 4 is second of waveform diagram of the embodiment of the present invention；
Fig. 5 is the third waveform diagram of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
The present invention provides a kind of methods for realizing quadrature amplitude modulation, wherein includes:
Step S1, using one first transmitting unit 1, with one first transmitting signal of transmitting；
Step S2, using one second transmitting unit 2, with one second transmitting signal of transmitting；
Step S3, one second is obtained with processing and is prolonged for postponing to the second transmitting signal using a delay cell 3
Slow signal；
Step S4, using a power combiner 4, the first transmitting signal and the second postpones signal are combined, with modulation
At a quadrature phase signal.
By the method for the realization quadrature amplitude modulation of above-mentioned offer, as shown in Figure 1, being emitted by the first transmitting unit 1
First transmitting signal.
Further, the second transmitting signal the second transmitting unit 2 emitted obtains the second delay after delay disposal
Signal.
Further, signal and the second transmitting signal after delay disposal are emitted for first by power combiner 4
Be combined, to be modulated into quadrature phase signal, realize extension from binary phase shift keying to quadrature phase shift keying and
Realize the effect of I/O modulation.
In a kind of preferably case study on implementation, the first transmitting unit 1 includes:
One first attenuator 10, for adjusting the size of the first transmitting signal；
One first phase shifter 11, the input terminal of the first phase shifter 11 connect the output end of the first attenuator 10, for by the
One transmitting signal carries out binary phase shift；
One first power amplifier 12, the input terminal of the first power amplifier 12 connect the output end of the first phase shifter 11,
It is amplified for the first transmitting signal after phase deflects.
Specifically, as shown in Fig. 2, first by the first attenuator 10 in the first transmitting unit 1 to the first transmitting signal
It is adjusted its size.
Further, the first transmitting signal is carried out by binary phase shift keying 0 by the first phase shifter 11 or 180 degree is inclined
Turn, at this point, the waveform of the first transmitting signal after phase is deflected is as shown in Figure 3, wherein abscissa indicates time T
(unit: s), ordinate indicate amplitude A (v).
Further, the first transmitting signal after then phase being deflected is put by the first power amplifier 12
Greatly.
In a kind of preferably case study on implementation, the second transmitting unit 2 includes:
One second attenuator 20, for adjusting the size of the second transmitting signal；
One second phase shifter 21, the input terminal of the second phase shifter 21 connect the output end of the second attenuator 20, for by the
Two transmitting signals carry out binary phase shift；
One second power amplifier 22, the input terminal of the second power amplifier 22 connect the output end of the second phase shifter 21,
It is amplified for the second transmitting signal after phase deflects.
Delay cell 3 is 90 degree of delay cells.
Specifically, as shown in Fig. 2, by the second attenuator 20 in the second transmitting unit 2 to the second transmitting signal adjustment
Its size.
Further, binary phase shift keying 0 will be carried out by the second phase shifter 21 or 180 degree deflects, then by that will send out
The second transmitting signal that phase offset turns amplifies.
Further, then by 90 degree of delay lines in delay cell 3 to amplified second transmitting signal postpone
It handling, the waveform diagram of the second transmitting signal after delay disposal is as shown in Figure 4, wherein abscissa indicates time T (unit: s),
Ordinate indicates amplitude A (v).
Further, the first transmitting signal after above-mentioned phase being deflected and the second transmitting letter after delay disposal
Number combination in logic is carried out, the extension of binary phase shift keying to quadrature phase shift keying can be realized, two kinds of signals combine it
Waveform diagram afterwards is as shown in Figure 5, wherein abscissa indicates time T (unit: s), and ordinate indicates amplitude A (v).
In a kind of preferably case study on implementation, the first phase shifter 11 and the second phase shifter 21 be 0 180 ° of phase shifters.
In a kind of preferably case study on implementation, the first attenuator 10 and the second attenuator 20 are adjustable attenuator.
Specifically, the second attenuator 20 in the first attenuator 10 and the second transmitting unit 2 in the first transmitting unit 1 is equal
It, can be by first after phase deflects by the first attenuator 10 or the second attenuator 20 for individually controllable attenuator
The second transmitting signal after emitting signal and delay disposal carried out after combination in logic by power combiner 4, it can be achieved that
The effect of IQ modulation.
In a kind of preferably case study on implementation, quadrature phase signal includes that octaphase-shift keying modulated signal or 16 are mutually orthogonal
Am signals or 32 phase quadrature amplitude modulation signals or 64 phase quadrature amplitude modulation signals etc..
Specifically, the first transmitting unit 1 and the second transmitting are controlled by the first attenuator 10 and the second attenuator 20 respectively
Unit 2 phase can be deflected after the first transmitting signal and delay disposal after the second transmitting signal by power combing
Device 4 carries out the signal modulation after combination in logic to be believed at octaphase-shift keying modulated signal or 16 phase quadrature amplitude modulations
Number or 32 phase quadrature amplitude modulation signals or 64 phase quadrature amplitude modulation signals etc..
The beneficial effect of technical solution of the present invention is: the first transmitting signal and the emitted by the first transmitting unit
The second postpones signal that second transmitting signal of two transmitting units transmitting obtains after delay disposal is combined, to be modulated into
One quadrature phase signal realizes the extension from binary phase shift keying to quadrature phase shift keying and realizes I/O modulation
Effect.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (7)
1. a kind of method for realizing quadrature amplitude modulation characterized by comprising
Step S1, using one first transmitting unit, with one first transmitting signal of transmitting；
Step S2, using one second transmitting unit, with one second transmitting signal of transmitting；
Step S3, one second delay is obtained for postponing to the second transmitting signal with processing using a delay cell
Signal；
Step S4, using a power combiner, the first transmitting signal and second postpones signal are combined, to adjust
A quadrature phase signal is made.
2. a kind of method for realizing quadrature amplitude modulation according to claim 1, which is characterized in that first transmitting is single
Member includes:
One first attenuator, for adjusting the size of the first transmitting signal；
One first phase shifter, the input terminal of first phase shifter connect the output end of first attenuator, and being used for will be described
First transmitting signal carries out binary phase shift；
One first power amplifier, the input terminal of first power amplifier connect the output end of first phase shifter, use
The first transmitting signal after phase deflects amplifies.
3. a kind of method for realizing quadrature amplitude modulation according to claim 2, which is characterized in that second transmitting is single
Member includes:
One second attenuator, for adjusting the size of the second transmitting signal；
One second phase shifter, the input terminal of second phase shifter connect the output end of second attenuator, and being used for will be described
Second transmitting signal carries out binary phase shift；
One second power amplifier, the input terminal of second power amplifier connect the output end of second phase shifter, use
The second transmitting signal after phase deflects amplifies.
4. a kind of method for realizing quadrature amplitude modulation according to claim 1, which is characterized in that the delay cell is
90 degree of delay cells.
5. a kind of method for realizing quadrature amplitude modulation according to claim 3, which is characterized in that first phase shifter
With second phase shifter be 0 180 ° of phase shifters.
6. a kind of method for realizing quadrature amplitude modulation according to claim 3, which is characterized in that first attenuator
It is adjustable attenuator with second attenuator.
7. a kind of method for realizing quadrature amplitude modulation according to claim 1, which is characterized in that the quadrature phase letter
It number include octaphase-shift keying modulated signal or 16 phase quadrature amplitude modulation signals or 32 phase quadrature amplitude modulation signals or 64
Phase quadrature amplitude modulation signal etc..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910626643.XA CN110441741A (en) | 2019-07-11 | 2019-07-11 | A method of realizing quadrature amplitude modulation |
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|---|---|---|---|
| CN201910626643.XA CN110441741A (en) | 2019-07-11 | 2019-07-11 | A method of realizing quadrature amplitude modulation |
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Citations (9)
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| CN1146835A (en) * | 1994-03-07 | 1997-04-02 | 诺思路·格鲁曼公司 | Method and apparatus for AM compatible digital broadcasting |
| US20020130727A1 (en) * | 2001-03-19 | 2002-09-19 | Samsung Electronics Co., Ltd. | Circuit and method for compensating for non-linear distortion |
| KR20030061498A (en) * | 2002-01-14 | 2003-07-22 | 기가텔레콤 (주) | Apparatus for continuous phase quadrature amplitude modulation and demodulation |
| CN1765098A (en) * | 2003-03-24 | 2006-04-26 | 株式会社爱得万测试 | Orthogonal modulation device, method, program, recording medium, and modulation device |
| JP2008211782A (en) * | 2007-01-30 | 2008-09-11 | Matsushita Electric Ind Co Ltd | Modulation device and demodulation device |
| CN101977076A (en) * | 2010-11-17 | 2011-02-16 | 烽火通信科技股份有限公司 | Transmitter for generating various 16QAM (Quadrature Amplitude Modulation) code types |
| CN101997608A (en) * | 2009-08-31 | 2011-03-30 | 华为技术有限公司 | Optical transmitter and method for generating optical signal |
| CN102340467A (en) * | 2011-05-19 | 2012-02-01 | 乐鑫信息科技（上海）有限公司 | Device and method for calibrating mismatched modem |
| CN109459733A (en) * | 2018-10-26 | 2019-03-12 | 中电科仪器仪表有限公司 | Anticollision Radar target velocity simulator, system and method based on pm mode |
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2019
- 2019-07-11 CN CN201910626643.XA patent/CN110441741A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146835A (en) * | 1994-03-07 | 1997-04-02 | 诺思路·格鲁曼公司 | Method and apparatus for AM compatible digital broadcasting |
| US20020130727A1 (en) * | 2001-03-19 | 2002-09-19 | Samsung Electronics Co., Ltd. | Circuit and method for compensating for non-linear distortion |
| KR20030061498A (en) * | 2002-01-14 | 2003-07-22 | 기가텔레콤 (주) | Apparatus for continuous phase quadrature amplitude modulation and demodulation |
| CN1765098A (en) * | 2003-03-24 | 2006-04-26 | 株式会社爱得万测试 | Orthogonal modulation device, method, program, recording medium, and modulation device |
| JP2008211782A (en) * | 2007-01-30 | 2008-09-11 | Matsushita Electric Ind Co Ltd | Modulation device and demodulation device |
| CN101997608A (en) * | 2009-08-31 | 2011-03-30 | 华为技术有限公司 | Optical transmitter and method for generating optical signal |
| CN101977076A (en) * | 2010-11-17 | 2011-02-16 | 烽火通信科技股份有限公司 | Transmitter for generating various 16QAM (Quadrature Amplitude Modulation) code types |
| CN102340467A (en) * | 2011-05-19 | 2012-02-01 | 乐鑫信息科技（上海）有限公司 | Device and method for calibrating mismatched modem |
| CN109459733A (en) * | 2018-10-26 | 2019-03-12 | 中电科仪器仪表有限公司 | Anticollision Radar target velocity simulator, system and method based on pm mode |
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