CN106155982B - Amplitude/frequency/time encoding and Short Time Fourier Transform coding/decoding method and device - Google Patents
Amplitude/frequency/time encoding and Short Time Fourier Transform coding/decoding method and device Download PDFInfo
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Abstract
The invention belongs to the communications fields, a kind of based on coding and the decoded communication means of Short Time Fourier Transform and device between amplitude/frequency/time/time to provide, to improve traffic rate and anti-interference ability.The technical solution adopted by the present invention is that amplitude/frequency/time encoding and Short Time Fourier Transform coding/decoding method and device, including coded portion, decoded portion；Coded portion includes: amplitude encoder, frequency coder, clock coder, time interval encoder, transmitter；Decoded portion includes: receiver, Short Time Fourier Transform device, time interval decoder, temporal decoder, frequency decoder, magnitude decoder, finally, decoding outcome is sent to data sink.Present invention is mainly applied to the design and manufacture occasions of communication equipment.
Description
Technical field
It is especially a kind of based on coding between amplitude/frequency/time/time and in short-term in Fu the invention belongs to the communications field
The decoded communication means of leaf transformation and device.
Background technique
In subsurface communication system, common modulation system has amplitude modulation, frequency modulation(PFM), phase-modulation etc.；Ordinary circumstance
Under, these modulation systems are used alone, and traffic rate is lower.
Summary of the invention
In order to overcome the deficiencies of the prior art, the present invention is intended to provide a kind of be based on encoding between amplitude/frequency/time/time
With the decoded communication means of Short Time Fourier Transform and device, to improve traffic rate and anti-interference ability.What the present invention used
Technical solution is amplitude/frequency/time encoding and Short Time Fourier Transform decoding apparatus, including coded portion, decoded portion；
Coded portion includes:
Amplitude encoder, for by being set to the range value of signal of communication pulse, to realize to be communicated
Information is encoded；Assuming that the maximum amplitude value of signal of communication pulse is A, minimum amplitude value a, lead to representated by amplitude coding
The binary code that letter information amount is n1, then be divided into (A-a)/2 between amplitude codingn1；
Frequency coder is realized and is carried out to information to be communicated for the sinusoidal signal pulse by using different frequency
Coding；Assuming that the highest frequency of signal of communication pulse is fmax, low-limit frequency fmin, communication information amount representated by frequency coding
For n2 binary codes, then (f is divided between frequency codingmax-fmin)/2n2；
Clock coder, for the time width by using each communication pulse of setting, to realize to letter to be communicated
Breath is encoded；Assuming that the maximum width of signal of communication pulse is Tmax, minimum widith Tmin, communication representated by time encoding
The binary code that information content is n3, then be divided into (T between time encodingmax-Tmin)/2n3；
Time interval encoder, for by using setting adjacent pulse between time interval, to realize to be communicated
Information encoded；Assuming that the maximum value between signal of communication adjacent pulse is tmax, maximum value tmin, time interval coding
The binary code that representative communication information amount is n4, then time interval encoded interval is (tmax-tmin)/2n4；
Transmitter generates transmitting signal pulse, and add in the head and the tail of transmitting signal pulse for pressing above-mentioned coding result
Frame head and postamble pulse form a complete communication pulse frame and send；
Decoded portion includes:
The pulse signal received is converted into data by receiver, is then exported to Short Time Fourier Transform device, in short-term Fu
In after leaf transformation device carries out Fourier transformation to the data that receive, time-frequency figure is exported, according to the frame head and postamble in time-frequency figure
The characteristics of, determine the beginning and ending of a frame data, the feature refers to impulse amplitude, width and frequency；Further, time-frequency figure
Middle time-frequency distributions result is corresponding with corresponding pulse signal respectively, and time-frequency distributions result can provide corresponding to each pulse
Time between amplitude, width, frequency and pulse after；By time-frequency figure, completed in time interval decoder respectively adjacent
Between pulse time interval decoding, in temporal decoder complete pulse width decoding, pulse is completed in frequency decoder
The decoding of frequency, the decoding that impulse amplitude is completed in magnitude decoder, finally, decoding outcome is sent to data receiver
In device.
The range value of frame head pulse and postamble pulse is A, and frame head is different from the frequency of postamble pulse.
Amplitude/frequency/time encoding and Short Time Fourier Transform coding/decoding method, including coding step, decoding step；
Coding step includes:
Amplitude coding, by being set to the range value of signal of communication pulse, thus realize to information to be communicated into
Row coding；Assuming that the maximum amplitude value of signal of communication pulse is A, minimum amplitude value a, the communication information representated by amplitude coding
The binary code that amount is n1, then be divided into (A-a)/2 between amplitude codingn1；
Frequency coding, by using the sinusoidal signal pulse of different frequency, realization encodes information to be communicated；It is false
If the highest frequency of signal of communication pulse is fmax, low-limit frequency fmin, communication information amount representated by frequency coding is n2
Binary code, then be divided into (f between frequency codingmax-fmin)/2n2；
Time encoding, by using the time width for setting each communication pulse, to realize to information progress to be communicated
Coding；Assuming that the maximum width of signal of communication pulse is Tmax, minimum widith Tmin, communication information amount representated by time encoding
For n3 binary codes, then (T is divided between time encodingmax-Tmin)/2n3；
Time interval coding, by using the time interval between setting adjacent pulse, to realize to information to be communicated
It is encoded；Assuming that the maximum value between signal of communication adjacent pulse is tmax, maximum value tmin, time interval coding representated by
Communication information amount be n4 binary codes, then time interval encoded interval is (tmax-tmin)/2n4；
Sending step generates transmitting signal pulse by above-mentioned coding result, and adds frame in the head and the tail of transmitting signal pulse
Head and postamble pulse form a complete communication pulse frame and send；
Decoding step includes:
The pulse signal received is converted into data, is then exported to Short Time Fourier Transform device, Fourier becomes in short-term
After parallel operation carries out Fourier transformation to the data that receive, time-frequency figure is exported, the characteristics of according to frame head and postamble in time-frequency figure,
Determine the beginning and ending of a frame data, the feature refers to impulse amplitude, width and frequency；Further, time-frequency in time-frequency figure
Distribution results are corresponding with corresponding pulse signal respectively, time-frequency distributions result can provide amplitude corresponding to each pulse,
Time between width, frequency and pulse after；By time-frequency figure, respectively in time interval decoder between completion adjacent pulse
Time interval decoding, complete in temporal decoder pulse width decoding, pulse frequency is completed in frequency decoder
Decoding, the decoding that impulse amplitude is completed in magnitude decoder, finally, decoding outcome is sent in data sink.
The range value of frame head pulse and postamble pulse is A, and frame head is different from the frequency of postamble pulse.
Selection amplitude coding, four solution of frequency coding, time encoding and time interval coding are carried out according to the actual application
One of coding mode a variety of uses simultaneously.
The features of the present invention and beneficial effect are:
(1) amplitude/frequency/time/time interval is all used to modulation intelligence, so traffic rate is high；
(2) certain interval time is equipped between communication pulse, so having stronger anti multi path interference ability.
Detailed description of the invention:
Fig. 1 shows the cataloged procedure of heretofore described method.
In Fig. 1: 1 is data to be communicated；2 be amplitude encoder；3 be frequency coder；4 be clock coder；5 be the time
Space coding device；6 be transmitter；
Pulse schematic diagram in Fig. 2 frame, in figure: 7 be frame head pulse；8-14 is the pulse for carrying information；15 be postamble pulse；
Fig. 3 shows the volume solution preocess of heretofore described method, and in figure: 16 be receiver；17 be Short Time Fourier Transform
Device；18 be time-frequency figure；19 be time interval decoder；20 be temporal decoder；21 be frequency decoder；22 decode for amplitude
Device；23 be data sink；
Fig. 4 exports time-frequency figure, in figure: 24 be the Short Time Fourier Transform result of frame head pulse；25-28 is to carry information
The Short Time Fourier Transform result of each pulse；29 be the Short Time Fourier Transform result of postamble.
Specific embodiment
In the present invention, propose a kind of based on coding between amplitude/frequency/time/time and Short Time Fourier Transform decoding
Communication device, the communication New System has the ability of good anti multi path interference, the features such as traffic rate is high.
The present invention has the advantage that (1) amplitude/frequency/time/time interval is all used to modulation intelligence, so
Traffic rate is high；(2) certain interval time is equipped between communication pulse, so having stronger anti multi path interference ability.
The technical solution adopted by the present invention is that a kind of based on coding between amplitude/frequency/time/time and Fourier in short-term
Decoded communication device is converted, realization process includes following sections,
First part: signal of communication coding as shown in Figure 1,
Data 1 to be communicated are the data that will be transmitted；
Further, amplitude encoder 2 is by setting the range value of signal of communication pulse, thus realize treat it is logical
The information of letter is encoded；Assuming that the maximum amplitude value of signal of communication pulse is A (as shown in Figure 2), minimum amplitude value a, width
The binary code that the representative communication information amount of degree coding is n1, then be divided into (A-a)/2 between amplitude codingn1；
Further, frequency coder 3 is realized by using the sinusoidal signal pulse of different frequency to information to be communicated
It is encoded；Assuming that the highest frequency of signal of communication pulse is fmax, low-limit frequency fmin, the letter of communication representated by frequency coding
The binary code that breath amount is n2, then be divided into (f between frequency codingmax-fmin)/2n2；
Further, clock coder 4 is by using the time width for setting each communication pulse, to realize to be communicated
Information encoded；Assuming that the maximum width of signal of communication pulse is Tmax, minimum widith Tmin, representated by time encoding
The binary code that communication information amount is n3, then be divided into (T between time encodingmax-Tmin)/2n3；
Further, time interval encoder 5 is treated by using the time interval between setting adjacent pulse, Lai Shixian
The information of communication is encoded；Assuming that the maximum value between signal of communication adjacent pulse is tmax, maximum value tmin, time interval
The binary code that the representative communication information amount of coding is n4, then time interval encoded interval is (tmax-tmin)/2n4；
Further, transmitter 6 presses above-mentioned coding result, generates transmitting signal pulse, and in the head of transmitting signal pulse
Tail adds frame head and postamble pulse, forms a complete communication pulse frame；
Further, the range value of frame head pulse and postamble pulse is A, and frame head is different from the frequency of postamble pulse；
Second part: signal of communication coding after frame format as shown in Fig. 2,
Further, each frame is made of the pulse 8-14 of frame head 7, postamble 15 and carrying information；
Further, the pulse of frame head, postamble and carrying information is single frequency sinusoidal wave impulse；
Part III: the decoding of signal of communication as shown in figure 3,
Further, the pulse signal received is converted into data by receiver 16, is then exported to Fourier in short-term and is become
Parallel operation 17 after Short Time Fourier Transform device carries out Fourier transformation to the data received, exports time-frequency Figure 18 (such as Fig. 4 institute
Show)；Further, time-frequency Figure 18 (shown in Fig. 4) is analyzed；Firstly, the characteristics of according to frame head and postamble, (feature referred to pulse
Amplitude, width and frequency), determine the beginning and ending of a frame data；Further, in Fig. 4, time-frequency distributions result 24-29
Corresponding with corresponding pulse signal respectively, time-frequency distributions result can provide amplitude corresponding to each pulse, width, frequency
And the time between pulse after；According to these as a result, being able to complete adjacent pulse in time interval decoder 19
Between time interval decoding, complete in temporal decoder 20 pulse width decoding, in frequency decoder 21 complete pulse
The decoding of frequency, the decoding that impulse amplitude is completed in magnitude decoder 22, connect finally, decoding outcome is sent to data
It receives in device 23.
Further, amplitude/frequency/time/time interval coding mode in the present invention can be according to the actual application
It is selected, and is not required that four solution coding modes while using；
Further, there is certain interval guard time between the encoded signal pulse in the present invention, so having relatively strong
Anti multi path interference ability；
It is of the present invention a kind of based on coding and the decoded communication of Short Time Fourier Transform between amplitude/frequency/time/time
The advantages of device is: (1) amplitude/frequency/time/time interval is all used to modulation intelligence, so traffic rate is high；(2)
Certain interval time is equipped between communication pulse, so having stronger anti multi path interference ability.
In order to overcome the deficiencies of the prior art, the present invention provides a kind of based on coding between amplitude/frequency/time/time and short
When the decoded communication device of Fourier transformation.
The present invention has the advantage that (1) amplitude/frequency/time/time interval is all used to modulation intelligence, so
Traffic rate is high；(2) certain interval time is equipped between communication pulse, so having stronger anti multi path interference ability.
The technical solution adopted by the present invention is that a kind of based on coding between amplitude/frequency/time/time and Fourier in short-term
Decoded communication device is converted, realization process includes following sections,
First part: signal of communication coding as shown in Figure 1,
Data 1 to be communicated are the data that will be transmitted；
Further, amplitude encoder 2 is by setting the range value of signal of communication pulse, thus realize treat it is logical
The information of letter is encoded；Assuming that the maximum amplitude value of signal of communication pulse is A (as shown in Figure 2), minimum amplitude value a, width
The binary code that the representative communication information amount of degree coding is n1, then be divided into (A-a)/2 between amplitude codingn1；
Further, frequency coder 3 is realized by using the sinusoidal signal pulse of different frequency to information to be communicated
It is encoded；Assuming that the highest frequency of signal of communication pulse is fmax, low-limit frequency fmin, the letter of communication representated by frequency coding
The binary code that breath amount is n2, then be divided into (f between frequency codingmax-fmin)/2n2；
Further, clock coder 4 is by using the time width for setting each communication pulse, to realize to be communicated
Information encoded；Assuming that the maximum width of signal of communication pulse is Tmax, minimum widith Tmin, representated by time encoding
The binary code that communication information amount is n3, then be divided into (T between time encodingmax-Tmin)/2n3；
Further, time interval encoder 5 is treated by using the time interval between setting adjacent pulse, Lai Shixian
The information of communication is encoded；Assuming that the maximum value between signal of communication adjacent pulse is tmax, maximum value tmin, time interval
The binary code that the representative communication information amount of coding is n4, then time interval encoded interval is (tmax-tmin)/2n4；
Further, transmitter 6 presses above-mentioned coding result, generates transmitting signal pulse, and in the head of transmitting signal pulse
Tail adds frame head and postamble pulse, forms a complete communication pulse frame；
Further, the range value of frame head pulse and postamble pulse is A, and frame head is different from the frequency of postamble pulse；
Second part: signal of communication coding after frame format as shown in Fig. 2,
Further, each frame is made of the pulse 8-14 of frame head 7, postamble 15 and carrying information；
Further, the pulse of frame head, postamble and carrying information is single frequency sinusoidal wave impulse；
Part III: the decoding of signal of communication as shown in figure 3,
Further, the pulse signal received is converted into data by receiver 16, is then exported to Fourier in short-term and is become
Parallel operation 17 after Short Time Fourier Transform device carries out Fourier transformation to the data received, exports time-frequency Figure 18 (such as Fig. 4 institute
Show)；Further, time-frequency Figure 18 (shown in Fig. 4) is analyzed；Firstly, the characteristics of according to frame head and postamble, (feature referred to pulse
Amplitude, width and frequency), determine the beginning and ending of a frame data；Further, in Fig. 4, time-frequency distributions result 24-29
Corresponding with corresponding pulse signal respectively, time-frequency distributions result can provide amplitude corresponding to each pulse, width, frequency
And the time between pulse after；According to these as a result, being able to complete adjacent pulse in time interval decoder 19
Between time interval decoding, complete in temporal decoder 20 pulse width decoding, in frequency decoder 21 complete pulse
The decoding of frequency, the decoding that impulse amplitude is completed in magnitude decoder 22, connect finally, decoding outcome is sent to data
It receives in device 23.
Further, amplitude/frequency/time/time interval coding mode in the present invention can be according to the actual application
It is selected, and is not required that four solution coding modes while using；
Further, there is certain interval guard time between the encoded signal pulse in the present invention, so having relatively strong
Anti multi path interference ability.
Claims (5)
1. a kind of amplitude/frequency/time encoding and Short Time Fourier Transform decoding apparatus, characterized in that including coded portion, solution
Code part；
Coded portion includes:
Amplitude encoder, for by being set to the range value of signal of communication pulse, to realize to information to be communicated
It is encoded；The maximum amplitude value of signal of communication pulse is A, minimum amplitude value a, communication information amount representated by amplitude coding
For n1 binary codes, then it is divided between amplitude coding (A-a)/2n1；
Frequency coder, for the sinusoidal signal pulse by using different frequency, realization encodes information to be communicated；
The highest frequency of signal of communication pulse is fmax, low-limit frequency fmin, communication information amount representated by frequency coding is n2
Binary code is then divided into (f between frequency codingmax-fmin)/2n2；
Clock coder, for by using the time width for setting each communication pulse, come realize to information to be communicated into
Row coding；The maximum width of signal of communication pulse is Tmax, minimum widith Tmin, communication information amount representated by time encoding is
N3 binary codes are then divided into (T between time encodingmax-Tmin)/2n3；
Time interval encoder, for by using setting adjacent pulse between time interval, to realize to letter to be communicated
Breath is encoded；Maximum value between signal of communication adjacent pulse is tmax, maximum value tmin, time interval encodes representative
The binary code that communication information amount is n4, then time interval encoded interval is (tmax-tmin)/2n4；
Transmitter generates transmitting signal pulse, and add frame head in the head and the tail of transmitting signal pulse for pressing above-mentioned coding result
With postamble pulse, forms a complete communication pulse frame and send；
Decoded portion includes:
The pulse signal received is converted into data by receiver, is then exported to Short Time Fourier Transform device, in short-term Fourier
After converter carries out Fourier transformation to the data received, time-frequency figure is exported, according to the spy of frame head and postamble in time-frequency figure
Point, determines the beginning and ending of a frame data, and the feature refers to impulse amplitude, width and frequency；When further, in time-frequency figure
Frequency distribution results are corresponding with corresponding pulse signal respectively, and time-frequency distributions result can provide width corresponding to each pulse
Time between degree, width, frequency and pulse after；By time-frequency figure, adjacent arteries and veins is completed in time interval decoder respectively
Between punching time interval decoding, in temporal decoder complete pulse width decoding, pulse frequency is completed in frequency decoder
The decoding of rate, the decoding that impulse amplitude is completed in magnitude decoder, finally, decoding outcome is sent to data sink
In.
2. amplitude/frequency/time encoding as described in claim 1 and Short Time Fourier Transform decoding apparatus, characterized in that frame
The range value of head pulse and postamble pulse is A, and frame head is different from the frequency of postamble pulse.
3. a kind of amplitude/frequency/time encoding and Short Time Fourier Transform coding/decoding method, characterized in that including coding step, solution
Code step；
Coding step includes:
Amplitude coding compiles information to be communicated to realize by setting to the range value of signal of communication pulse
Code；The maximum amplitude value of signal of communication pulse is A, minimum amplitude value a, and communication information amount representated by amplitude coding is n1
Binary code, then be divided between amplitude coding (A-a)/2n1；
Frequency coding, by using the sinusoidal signal pulse of different frequency, realization encodes information to be communicated；Communication letter
Feel the pulse punching highest frequency be fmax, low-limit frequency fmin, binary system that communication information amount representated by frequency coding is n2
Code, then be divided into (f between frequency codingmax-fmin)/2n2；
Time encoding encodes information to be communicated to realize by using the time width for setting each communication pulse；
The maximum width of signal of communication pulse is Tmax, minimum widith Tmin, communication information amount representated by time encoding is n3
Binary code is then divided into (T between time encodingmax-Tmin)/2n3；
Time interval coding, by using the time interval between setting adjacent pulse, to realize to information progress to be communicated
Coding；Maximum value between signal of communication adjacent pulse is tmax, maximum value tmin, the representative communication letter of time interval coding
The binary code that breath amount is n4, then time interval encoded interval is (tmax-tmin)/2n4；
Sending step generates transmitting signal pulse by above-mentioned coding result, and the head and the tail of transmitting signal pulse plus frame head and
Postamble pulse forms a complete communication pulse frame and sends；
Decoding step includes:
The pulse signal received is converted into data, is then exported to Short Time Fourier Transform device, Short Time Fourier Transform device
After carrying out Fourier transformation to the data that receive, time-frequency figure is exported, the characteristics of according to frame head and postamble in time-frequency figure, is determined
The beginning and ending of one frame data, the feature refer to impulse amplitude, width and frequency；Further, time-frequency distributions in time-frequency figure
As a result corresponding with corresponding pulse signal respectively, time-frequency distributions result can provide amplitude corresponding to each pulse, width,
Time between frequency and pulse after；By time-frequency figure, respectively in time interval decoder complete adjacent pulse between when
Between interval decoding, in temporal decoder complete pulse width decoding, in frequency decoder complete pulse frequency decoding,
The decoding that impulse amplitude is completed in magnitude decoder, finally, decoding outcome is sent in data sink.
4. amplitude/frequency/time encoding as claimed in claim 3 and Short Time Fourier Transform coding/decoding method, characterized in that frame
The range value of head pulse and postamble pulse is A, and frame head is different from the frequency of postamble pulse.
5. amplitude/frequency/time encoding as claimed in claim 3 and Short Time Fourier Transform coding/decoding method, characterized in that root
It needs to carry out selection amplitude coding, frequency coding, time encoding and time interval coding four according to practical application to solve in coding mode
One or more use simultaneously.
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| CN108039916B (en) * | 2017-12-30 | 2023-08-29 | 天津大学 | Time difference communication coding method and device using occurrence of pulse as coding jump |
| CN111405286B (en) * | 2020-03-30 | 2023-11-03 | 沈阳航空产业技术研究院有限公司 | Self-adaptive coding and decoding double-line information transmission method and device |
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