CN109586760A - A kind of wireless communications method and system adapting to narrow pulse signal - Google Patents
A kind of wireless communications method and system adapting to narrow pulse signal Download PDFInfo
- Publication number
- CN109586760A CN109586760A CN201811507121.XA CN201811507121A CN109586760A CN 109586760 A CN109586760 A CN 109586760A CN 201811507121 A CN201811507121 A CN 201811507121A CN 109586760 A CN109586760 A CN 109586760A
- Authority
- CN
- China
- Prior art keywords
- code
- data packet
- spreading code
- data
- pulse signal
- 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
- H04B1/69—Spread spectrum techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of wireless communications methods and system for adapting to narrow pulse signal, it is related to wireless communication field, this method includes received data packet, and data packet has the first spreading code PN1 and data segment, data segment includes at least one second spreading code PN2, and the second spreading code PN2 length is fixed.The first spreading code PN1 is extracted from data packet, by first spread spectrum code acquisition arithmetic analysis the first spreading code PN1, frequency deviation and the code for obtaining data packet are inclined.Data packet is corrected and parsed partially by frequency deviation and code, is obtained data segment in the initial position of data packet, is extracted data segment.The the second spreading code PN2 extracted in data packet is parsed second spreading code PN2 according to code phase offset and is obtained its corresponding data using the code phase offset of second the second spreading code of spreading code arithmetic analysis PN2.It can adapt to narrow pulse signal wireless communication, while achieving the purpose that fast Acquisition and parsing data.
Description
Technical field
The present invention relates to wireless communication fields, and in particular to it is a kind of adapt to narrow pulse signal wireless communications method and be
System.
Background technique
Studies in China wirelessly communicates system at present, and most of is to adapt to continuous wave signal and wide pulse signal.Continuous wave letter
Number refer to medium in the particle vibration duration be infinite fluctuation.Impulse wave refers to that vibration duration is limited (single or hair)
Fluctuation.Wherein continuous wave refers to the pulse frequency sequence of certain single fixation of electric acupuncture apparatus output, and waveform is not through ovennodulation.
The frequency of continuous wave is generally within 1~1000Hz, lower than the continuous wave of 30Hz frequency, referred to as rarefaction wave.Higher than 30Hz frequency
Continuous wave, referred to as condensation wave.Impulse wave refers to a kind of electric signal occurred suddenly that the intermittent duration is extremely short.It is all discontinuously to go out
Existing voltage or electric current is known as pulse voltage or pulse current.If being closed for telecommunications waveform in addition to sine wave and by a sinusoidal component
At continuous wave other than, impulse wave can be known as.
But impulse wave has stronger anti-interference ability relative to continuous wave, while can also encode to signal.I
State's open report very rare for the wireless communications method of narrow pulse signal.The technology you have in find document be mostly section
General property material does not involve in profound communication system.
Meanwhile traditional pulse wave communication have tdd mode (Time Division Duplexing, time division duplex) and
Fdd mode (Frequency Division Duplexing, frequency division duplex), fdd mode distinguishes sending and receiving end by frequency, i.e.,
Two communication port use different frequencies, while mutually sending signal.This distinguishes sending and receiving end by the time to tdd mode, i.e.,
Two communication port use identical frequency, receive or send in different times signal in section.It is logical in present conventional downstream
In the case that road rate requirement is greater than data feedback channel rate requirement, and FDD uses different frequencies, while mutually sending signal,
Down going channel rate is identical thereon, and when carrying out practical communication, the resource of data feedback channel will be wasted.In addition, fdd mode
Communication pattern as needs two frequency separations, two ports is undoubtedly accounted for than using a common frequency to carry out communication tdd mode
With more frequency spectrum resources.
As radio spectrum resources are more and more nervous, the characteristics of tdd mode can make full use of wireless frequency spectrum increasingly by
People pay attention to, since TDD carries out sending and receiving communication respectively using different time-gap.And currently used acquisition and tracking algorithm needs
To be synchronized by acquisition and tracking and etc., it is time-consuming long, it is unable to fully send and receive time slot using TDD.
Summary of the invention
In view of the deficiencies in the prior art, the wireless of narrow pulse signal is adapted to the purpose of the present invention is to provide a kind of
Communication means and system can adapt to narrow pulse signal wireless communication, while achieve the purpose that fast Acquisition and parsing data.
To achieve the above objectives, in a first aspect, the embodiment of the present invention provides a kind of wireless communication for adapting to narrow pulse signal
Method for carrying out wireless communication in tdd mode comprising:
Received data packet, the data packet have the first spreading code PN1 and data segment, and the data segment includes at least one
Second spreading code PN2, the second spreading code PN2 length are fixed；
The first spreading code PN1 is extracted from the data packet, is expanded by described in the first spread spectrum code acquisition arithmetic analysis first
Frequency code PN1, frequency deviation and the code for obtaining data packet are inclined；
The data packet is corrected and parsed partially by the frequency deviation and code, obtains the data segment in the start bit of data packet
It sets, extracts the data segment；
The second spreading code PN2 in data packet is extracted, the second spreading code PN2 described in the second spreading code arithmetic analysis is used
Decoding parametric, the decoding parametric is parameter used in the PN2 coding/decoding mode of agreement, according to the PN2 decoding process
And second spreading code PN2 is decoded according to the decoding parametric and obtains its corresponding data.
As an optional embodiment, the data packet is corrected and parsed partially by the frequency deviation and code, obtains institute
Data segment is stated in the initial position of data packet, comprising the following steps:
The frequency deviation is obtained, the frequency deviation is inputted to carrier wave numerically-controlled oscillator NCO (numerically
Controlled oscillator) in, the carrier wave numerically-controlled oscillator NCO carries out down the partially revised data packet of code
Frequency conversion；
It obtains that the code is inclined, carries out code to the data packet and correct partially to obtain the data segment in the start bit of data packet
It sets.:
As an optional embodiment, the decoding parametric is code offset phase, and the decoding parametric is code phase
Offset, parses second spreading code PN2 according to the code phase offset and obtains its corresponding data.:
As an optional embodiment, the second spreading code algorithm is fast discrete Fourier change algorithm FFT
As an optional embodiment, after completing the second spreading code PN2 of parsing and obtaining its corresponding data, also
Carry out step:
Data packet progress code ring tracking to the completion transmission, the acquisition inclined corrected value of code, subsequent to data segment second
Spreading code PN2 is corrected.
As an optional embodiment, the first spread spectrum code acquisition algorithm is discrete fourier transform compensation part
With filter acquiring pseudo code algorithm PMF-FFT (Partial Matched Filters combined with Fast
Fourier Transformation).Second aspect, the embodiment of the present invention provide a kind of wireless communication for adapting to narrow pulse signal
System, for carrying out wireless communication in tdd mode comprising:
Receiving module wraps for receiving data, and the data packet has the first spreading code and data segment, the data segment packet
At least one second spreading code is included, second spread code length is fixed；
Computing module passes through the first spread spectrum code acquisition algorithm solution for extracting the first spreading code PN1 from the data packet
The first spreading code PN1 is analysed, frequency deviation and the code for obtaining data packet are inclined；
Extraction module obtains the data segment and exists for correcting and parsing partially the data packet by the frequency deviation and code
The data segment is extracted in the initial position of data packet；
Parsing module extracts the second spreading code PN2 in data packet, expands using described in the second spreading code arithmetic analysis second
The decoding parametric of frequency code PN2, the decoding parametric is parameter used in the PN2 coding/decoding mode of agreement, according to described
PN2 decoding process simultaneously decodes second spreading code PN2 according to the decoding parametric and obtains its corresponding data.
As an optional embodiment, the extraction module includes:
Frequency deviation submodule inputs the frequency deviation to carrier wave numerically-controlled oscillator NCO for obtaining the frequency deviation
In (numerically controlled oscillator), the carrier wave numerically-controlled oscillator NCO is partially revised to code
Data packet carries out down coversion；
The inclined submodule of code, it is inclined to obtain the code, carries out code to the data packet and correct partially to obtain the data segment in data
The initial position of packet.
As an optional embodiment, further include:
Code ring tracking module, for carrying out the tracking of code ring to the data packet for completing transmission, the acquisition inclined corrected value of code is right
The subsequent second spreading code PN2 of data segment is corrected.
As an optional embodiment, further include:
The first spread spectrum code acquisition algorithm is that discrete fourier transform compensates Partial-matched filter acquiring pseudo code algorithm
PMF-FFT(Partial Matched Filters combined with Fast Fourier Transformation)；Institute
Stating the second spreading code algorithm is fast discrete Fourier change algorithm FFT.
Compared with the prior art, the advantages of the present invention are as follows:
A kind of wireless communications method for adapting to narrow pulse signal of the present invention and system are arranged first in tdd mode data packet
Spreading code PN1 and at least one second spreading code PN2, the first spreading code PN1 is for including in receiving end identification data packet
The data segment of at least one the second spreading code PN2.Its first spreading code PN1 provides frequency deviation for receiving end and code is inclined, the second spread spectrum
Code is then for for distinguishing different information, receiving end passes through the code phase offset of the second spreading code after parsing obtains data segment
It parses the second different spreading codes and obtains each different data information.Data segment is if one group 2nThe second spreading code PN2 code,
So it can indicate the data of n bit, and limited digit is more, and transmission quantity is big, high sensitivity.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, a letter is made to the corresponding attached drawing of embodiment below
Singly introduce, it should be apparent that, drawings in the following description are some embodiments of the invention, for ordinary skill people
For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of step flow chart for the wireless communications method embodiment for adapting to narrow pulse signal of the present invention；
Fig. 2 is a kind of data packet schematic diagram for the wireless communications method embodiment for adapting to narrow pulse signal of the present invention；
Fig. 3 is the structure that a kind of wireless communications method embodiment receiving end for adapting to narrow pulse signal of the present invention receives process
Figure；
Fig. 4 is to send data slot segmentation in a kind of wireless communications method embodiment for adapting to narrow pulse signal of the present invention
Figure；
Fig. 5 is transmitting terminal band Doppler shift in a kind of wireless communications method embodiment for adapting to narrow pulse signal of the present invention
With the time domain plethysmographic signal figure after plus noise；
Fig. 6 is transmitting terminal band Doppler shift in a kind of wireless communications method embodiment for adapting to narrow pulse signal of the present invention
With the signal frequency domain waveform diagram after plus noise；
Fig. 7 is that receiving end passes through PMF-FFT in a kind of wireless communications method embodiment for adapting to narrow pulse signal of the present invention
The frequency deviation figure that acquisition algorithm is found out；
Fig. 8 is that receiving end passes through PMF-FFT in a kind of wireless communications method embodiment for adapting to narrow pulse signal of the present invention
The code that acquisition algorithm is found out is schemed partially；
Fig. 9 is that receiving end passes through quick FFT in a kind of wireless communications method embodiment for adapting to narrow pulse signal of the present invention
The transmission datagram that arithmetic analysis goes out；
Figure 10 is a kind of structural schematic diagram for the wireless communication system for adapting to narrow pulse signal of the present invention.
In figure: 1- receiving module, 2- computing module, 3- extraction module, 4- parsing module.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
The embodiment of the present invention provides a kind of wireless communications method and system for adapting to narrow pulse signal, can adapt to burst pulse
Signal wireless communication, while achieving the purpose that fast Acquisition and parsing data.
To reach above-mentioned technical effect, the general thought of the application is as follows:
Received data packet, the data packet have the first spreading code PN1 and data segment, and the data segment includes at least one
Second spreading code PN2, the second spreading code PN2 length are fixed.
The first spreading code PN1 is extracted from the data packet, is expanded by described in the first spread spectrum code acquisition arithmetic analysis first
Frequency code PN1, frequency deviation and the code for obtaining data packet are inclined.
The data packet is corrected and parsed partially by the frequency deviation and code, obtains the data segment in the start bit of data packet
It sets, extracts the data segment.
The second spreading code PN2 in data packet is extracted, the second spreading code PN2 described in the second spreading code arithmetic analysis is used
Decoding parametric, the decoding parametric is parameter used in the PN2 coding/decoding mode of agreement, according to the PN2 decoding process
And second spreading code PN2 is decoded according to the decoding parametric and obtains its corresponding data.
In conclusion transmitting terminal will need the data sectional sent to synthesize at least one second spreading code in tdd mode
PN2 code, and the second spreading code PN2 is linked to be data segment, then the first spreading code PN1 and data segment are added in data packet to reception
End is sent.The first spreading code PN1 and data segment after received data packet, are disassembled in receiving end from data packet, pass through parsing first and expand
It is inclined to obtain frequency deviation code, and is corrected and parses to data packet partially by frequency deviation and code by frequency code PN1, obtain by least one
Two spreading code PN2 composition data sections.It extracts each PN2 and parses and obtain the decoding parametric that decoding process needs when PN2, and make
PN2, the data sent are parsed by the decoding parametric with the decoding process of agreement.
In order to better understand the above technical scheme, being described in detail With reference to embodiment.
Embodiment one
Shown in Figure 1, the embodiment of the present invention provides a kind of wireless communications method for adapting to narrow pulse signal comprising:
S1: received data packet, the data packet have the first spreading code PN1 and data segment, and the data segment includes at least
One the second spreading code PN2, the second spreading code PN2 length are fixed.
Specifically, two groups of spreading codes PN1 and PN2 are set, and wherein PN1 is the packet synchronisation synchronized for receiver
Head is preferably provided at the most preceding field of data packet.PN2 plays data segment identification and therefore carrying information is wrapped in data packet
Containing a PN2 is at least contained in data segment, when in data segment including multiple PN2, of the relevant peaks in data segment is obtained
Number, further according to relevant peaks number, the PN code number parsed, to identify the information of segmentation.
For example, shown in as shown in Figure 2, data packet is using the first spreading code PN1 as synchronous head, immediately data thereafter
Section, and data segment is all made of n the second spreading code PN2.After receiving end receives the signal, parsing the first spreading code PN1 is right
Data packet is corrected and obtains the initial position of data segment, and then can obtain the second spreading code PN2 in data segment, to
Two spreading code PN2 are parsed, and it is resident to obtain decoding, then be decoded to PN2 with the decoding process of agreement, it is corresponding to obtain its
The information sent by transmitting terminal actual needs.
S2: extracting the first spreading code PN1 from the data packet, by first described in the first spread spectrum code acquisition arithmetic analysis
Spreading code PN1, frequency deviation and the code for obtaining data packet are inclined.
S3: correcting and parse partially the data packet by the frequency deviation and code, obtains the data segment rising in data packet
The data segment is extracted in beginning position.
The present embodiment uses data packet=spreading code PN1+ data segment format, receives and sends messages, receiving end is in step s 2
PN1 is first extracted, the frequency deviation for calculating the data packet can be directly calculated by PN1 and code is inclined, is then passed through in step s3
The frequency deviation and code being calculated are inclined, quickly revise signal Doppler shift and the start bit of data segment can be found, to parse number
According to packet, the transmitting-receiving of the data completed.It is tracked compared with the existing technology, then synchronous transmitting-receiving section mouth, retransmits number
According to, and search the data segment of transmission, the present invention more saves time and spectrum space, can under narrow pulse signal mode,
Fast synchronization parses data.
As a preferred embodiment, data packet is corrected and parsed partially above by frequency deviation and code, obtains the number
According to section in the initial position of data packet, comprising the following steps:
As shown in figure 3, obtaining the frequency deviation, the frequency deviation is inputted to carrier wave numerically-controlled oscillator NCO
In (numerically controlled oscillator), the carrier wave numerically-controlled oscillator NCO is partially revised to code
Data packet carries out down coversion；
It obtains that the code is inclined, carries out code to the data packet and correct partially to obtain the data segment in the start bit of data packet
It sets.
As an optional embodiment, above-mentioned first spread spectrum code acquisition algorithm is discrete fourier transform compensation part
With filter acquiring pseudo code algorithm PMF-FFT (Partial Matched Filters combined with Fast
Fourier Transformation)。
S4: the second spreading code PN2 in data packet is extracted, the second spreading code described in the second spreading code arithmetic analysis is used
The decoding parametric of PN2, the decoding parametric are parameter used in the PN2 coding/decoding mode of agreement, are solved according to the PN2
Code mode simultaneously decodes second spreading code PN2 according to the decoding parametric and obtains its corresponding data.
Data segment can wrap containing multiple second spreading code PN2 in the embodiment of the present invention, use the second spreading code algorithm one
One the second spreading code PN2 of parsing, it can be deduced that the second respective decoding parametric of spreading code PN2, by the second spreading code PN2 and decoding
Parameter combines, and decodes PN2 with the decoding process of agreement, and corresponding data can be obtained and send to get to delivery section actual needs
Data.
As a preferred embodiment, above-mentioned decoding parametric is the displacement of code phase offset, the decoding process of agreement
For code phase offset, to the second spreading code PN2 phase offset in turn, its corresponding data can be obtained.
Further, further comprising the steps of when being encoded and decoded using code phase offset:
Data packet progress code ring tracking to the completion transmission, the acquisition inclined corrected value of code, subsequent to data segment second
Spreading code PN2 is corrected.
Wherein, the second spreading code algorithm is fast discrete Fourier change algorithm FFT, extracts the code phase in PN2 by FFT
Position offset.
It should be noted that transmitting terminal sends data using PN2 code code phase is deviated to represent the data of transmission.PN2's
The a length of N of spreading code then can directly indicate N group data by shifting.Data are such as indicated by offset PN2 code code phase 2
2.Therefore, the digit of the second spreading code PN2 is at least 1.
For example, in a pulse signal wireless communication system, system spread-spectrum bit rate is 10Mbps, PN1 and PN2
Spreading code a length of 512, Doppler shift 30KHz, channel SNR=- 15dB.
It should also be noted that, in addition to the mode of code phase offset carries out coding and decoding, those skilled in the art can be with
Use other modes coding and decoding, it is only necessary to decode it the decoding parametric that decoding needs and be added to PN2.
Fig. 4 sends data slot segmentation figure, and time pulse signal length is about 10.5ms, wherein about 0.5ms is PN1's
Synchronous head, about 10ms are the data segment of PN2.Fig. 5 and Fig. 6 be transmitting terminal with after Doppler shift and plus noise signal time domain with
Frequency-domain waveform figure.Partial-matched filter acquiring pseudo code algorithm PMT-FFT is compensated by discrete fourier transform to solve PN1
Analysis, obtains frequency deviation and code is inclined: Fig. 7 and Fig. 8 is that the frequency deviation that receiving end is found out by PMF-FFT acquisition algorithm is schemed partially with code, is obtained
It is 29.3KHz to appraising frequency bias, code is estimated as 4 partially.Further, revise signal Doppler shift and the starting for finding data segment
Position, further parses the data segment comprising PN2 code: Fig. 9 parses transmission data by fast FFT algorithm for receiving end
Figure, as finally parses obtained data, and the data parsed as seen from the figure are 1,2,3,4,5,6,7,8.
Based on the same inventive concept, the application provides embodiment two, and specific embodiment is as follows.
Embodiment two
As shown in figure 8, the embodiment of the present invention provides a kind of wireless communication system for adapting to narrow pulse signal, in TDD
It is carried out wireless communication under mode comprising receiving module 1, computing module 2, extraction module 3 and parsing module 4:
Receiving module 1, is wrapped for receiving data, and the data packet has the first spreading code PN1 and data segment, the data
Section includes at least one second spreading code PN2, and the second spreading code PN2 length is fixed.
Specifically, receiving module 1 receives the data packet containing the first spreading code PN1 and data segment, goes back in data segment
It include at least one second spreading code PN2.
Computing module 2 passes through the first spread spectrum code acquisition algorithm for extracting the first spreading code PN1 from the data packet
The first spreading code PN1 is parsed, frequency deviation and the code for obtaining data packet are inclined.
Computing module first choice extracts PN1, and the frequency deviation for calculating the data packet can be directly calculated by PN1 and code is inclined, tool
For body, Partial-matched filter acquiring pseudo code algorithm PMF-FFT (Partial is compensated by discrete fourier transform
Matched Filters combined with Fast Fourier Transformation).Calculate data packet frequency deviation and
Code is partially.
Extraction module 3 obtains the data segment and exists for correcting and parsing partially the data packet by the frequency deviation and code
The data segment is extracted in the initial position of data packet.
Obtaining frequency deviation and code is to the rear, the wireless communication system for adapting to narrow pulse signal can be by frequency deviation revise signal
Doppler shift, recycle code to search the start bit of data segment partially, to extract data segment from data packet.
Specifically, computing module inputs the frequency deviation to carrier wave numerically-controlled oscillator NCO (numerically
Controlled oscillator) in, the carrier wave numerically-controlled oscillator NCO carries out down the partially revised data packet of code
Frequency conversion；
It obtains that the code is inclined, carries out code to the data packet and correct partially to obtain the data segment in the start bit of data packet
It sets.
Parsing module 4 extracts the second spreading code PN2 in data packet, using second described in the second spreading code arithmetic analysis
The decoding parametric of spreading code PN2, the decoding parametric is parameter used in the PN2 coding/decoding mode of agreement, according to described
PN2 decoding process simultaneously decodes second spreading code PN2 according to the decoding parametric and obtains its corresponding data.
For example, the decoding process of agreement is code phase offset, and decoding parametric is the phase of code offset, then parsing module
4 parse the second spreading code PN2 using the second spreading code algorithm one by one, it can be deduced that the respective code of the second spreading code PN2 deviates phase
Position combines the second spreading code PN2 and code offset phase, and corresponding data can be obtained and send out to get to delivery section actual needs
The data sent.Specifically, the code phase offset of the second spreading code PN2 is extracted using fast discrete Fourier's change algorithm FFT.
On the whole, a kind of wireless communications method and system adapting to narrow pulse signal provided in an embodiment of the present invention, leads to
It crosses in the data packet in tdd mode and the first spreading code PN1, the second spreading code PN2 is set, having receiving end to PN1 and PN2
It is parsed, to obtain data, compared to technologies such as traditional FDD, can adapt to narrow pulse signal wireless communication, reach simultaneously
To fast Acquisition and the purpose of parsing data.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention is the flow chart referring to method according to embodiments of the present invention, equipment (system) and computer program product
And/or block diagram describes.It should be understood that each process in flowchart and/or the block diagram can be realized by computer program instructions
And/or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer programs to refer to
Enable the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate
One machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizing
The device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of wireless communications method for adapting to narrow pulse signal, for carrying out wireless communication in tdd mode, feature exists
In comprising:
Received data packet, the data packet have the first spreading code PN1 and data segment, the data segment include at least one second
Spreading code PN2, the second spreading code PN2 length are fixed；
The first spreading code PN1 is extracted from the data packet, passes through the first spreading code described in the first spread spectrum code acquisition arithmetic analysis
PN1, frequency deviation and the code for obtaining data packet are inclined；
The data packet is corrected and is parsed partially by the frequency deviation and code, obtains the data segment in the initial position of data packet,
Extract the data segment；
The second spreading code PN2 in data packet is extracted, the decoding of the second spreading code PN2 described in the second spreading code arithmetic analysis is used
Parameter, the decoding parametric is parameter used in the PN2 coding/decoding mode of agreement, according to the PN2 decoding process and root
Second spreading code PN2, which is decoded, according to the decoding parametric obtains its corresponding data.
2. adapting to the wireless communications method of narrow pulse signal as described in claim 1, which is characterized in that by the frequency deviation and
Code corrects and parses the data packet partially, obtains the data segment in the initial position of data packet, comprising the following steps:
The frequency deviation is obtained, the frequency deviation is inputted to carrier wave numerically-controlled oscillator NCO (numerically controlled
Oscillator in), the carrier wave numerically-controlled oscillator NCO carries out down coversion to the partially revised data packet of code；
It obtains that the code is inclined, carries out code to the data packet and correct partially to obtain the data segment in the initial position of data packet.
3. adapting to the wireless communications method of narrow pulse signal as described in claim 1, which is characterized in that the decoding parametric is
Code offset phase, the decoding parametric are code phase offset, parse second spreading code PN2 according to the code phase offset and obtain
To its corresponding data.
4. adapting to the wireless communications method of narrow pulse signal as claimed in claim 3, which is characterized in that second spreading code
Algorithm is fast discrete Fourier change algorithm FFT.
5. the wireless communications method of adaptation narrow pulse signal as stated in claim 3, which is characterized in that complete parsing second
After spreading code PN2 obtains its corresponding data, step is also carried out:
The tracking of code ring is carried out to the data packet for completing transmission, obtains the inclined corrected value of code, the second spread spectrum subsequent to data segment
Code PN2 is corrected.
6. adapting to the wireless communications method of narrow pulse signal as described in claim 1, which is characterized in that first spreading code
Acquisition algorithm is that discrete fourier transform compensates Partial-matched filter acquiring pseudo code algorithm PMF-FFT (Partial Matched
Filters combined with Fast Fourier Transformation)。
7. a kind of wireless communication system for adapting to narrow pulse signal, for carrying out wireless communication in tdd mode, feature exists
In comprising:
Receiving module wraps for receiving data, and the data packet has the first spreading code PN1 and data segment, the data segment packet
At least one second spreading code PN2 is included, the second spreading code PN2 length is fixed；
Computing module passes through the first spread spectrum code acquisition arithmetic analysis institute for extracting the first spreading code PN1 from the data packet
The first spreading code PN1 is stated, frequency deviation and the code for obtaining data packet are inclined；
Extraction module obtains the data segment in data for correcting and parsing partially the data packet by the frequency deviation and code
The data segment is extracted in the initial position of packet；
Parsing module extracts the second spreading code PN2 in data packet, uses the second spreading code described in the second spreading code arithmetic analysis
The decoding parametric of PN2, the decoding parametric are parameter used in the PN2 coding/decoding mode of agreement, are solved according to the PN2
Code mode simultaneously decodes second spreading code PN2 according to the decoding parametric and obtains its corresponding data.
8. adapting to the wireless communication system of narrow pulse signal as claimed in claim 7, which is characterized in that the extraction module packet
It includes:
Frequency deviation submodule inputs the frequency deviation to carrier wave numerically-controlled oscillator NCO for obtaining the frequency deviation
In (numerically controlled oscillator), the carrier wave numerically-controlled oscillator NCO is partially revised to code
Data packet carries out down coversion；
The inclined submodule of code, it is inclined to obtain the code, carries out code to the data packet and correct partially to obtain the data segment in data packet
Initial position.
9. adapting to the wireless communication system of narrow pulse signal as claimed in claim 7, which is characterized in that the decoding parametric is
Code offset phase, the decoding parametric are code phase offset, the wireless communication system further include:
Code ring tracking module obtains the inclined corrected value of code, to data for carrying out the tracking of code ring to the data packet for completing transmission
The subsequent second spreading code PN2 of section is corrected.
10. adapting to the wireless communication system of narrow pulse signal as claimed in claim 7, spy's war is, further include:
The first spread spectrum code acquisition algorithm is that discrete fourier transform compensates Partial-matched filter acquiring pseudo code algorithm PMF-FFT
(Partial Matched Filters combined with Fast Fourier Transformation)；Described second
Spreading code algorithm is fast discrete Fourier change algorithm FFT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507121.XA CN109586760B (en) | 2018-12-10 | 2018-12-10 | Wireless communication method and system suitable for narrow pulse signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507121.XA CN109586760B (en) | 2018-12-10 | 2018-12-10 | Wireless communication method and system suitable for narrow pulse signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109586760A true CN109586760A (en) | 2019-04-05 |
| CN109586760B CN109586760B (en) | 2021-04-27 |
Family
ID=65928787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507121.XA Active CN109586760B (en) | 2018-12-10 | 2018-12-10 | Wireless communication method and system suitable for narrow pulse signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109586760B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070140324A1 (en) * | 2005-12-15 | 2007-06-21 | Agilent Technologies, Inc. | Apparatus for FPGA Programming to synchronize with CDMA signals |
| CN101051849A (en) * | 2007-05-11 | 2007-10-10 | 浙江大学 | Multiple mode hand held intercom chip frame and multiple mode realizing method |
| CN101895491A (en) * | 2010-07-09 | 2010-11-24 | 重庆大学 | Self-adapting signal detecting method for eliminating frequency offset interference |
| CN102332933A (en) * | 2011-09-28 | 2012-01-25 | 上海交通大学 | Short-term burst spread spectrum signal transmitting and receiving method |
| CN104065397A (en) * | 2014-06-30 | 2014-09-24 | 西安电子科技大学 | Method and device for synchronously capturing pseudo codes in real time |
| CN107026810A (en) * | 2017-03-17 | 2017-08-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The PN synchronization method of burst directly-enlarging system and its DS waveform that happens suddenly |
-
2018
- 2018-12-10 CN CN201811507121.XA patent/CN109586760B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070140324A1 (en) * | 2005-12-15 | 2007-06-21 | Agilent Technologies, Inc. | Apparatus for FPGA Programming to synchronize with CDMA signals |
| CN101051849A (en) * | 2007-05-11 | 2007-10-10 | 浙江大学 | Multiple mode hand held intercom chip frame and multiple mode realizing method |
| CN101895491A (en) * | 2010-07-09 | 2010-11-24 | 重庆大学 | Self-adapting signal detecting method for eliminating frequency offset interference |
| CN102332933A (en) * | 2011-09-28 | 2012-01-25 | 上海交通大学 | Short-term burst spread spectrum signal transmitting and receiving method |
| CN104065397A (en) * | 2014-06-30 | 2014-09-24 | 西安电子科技大学 | Method and device for synchronously capturing pseudo codes in real time |
| CN107026810A (en) * | 2017-03-17 | 2017-08-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The PN synchronization method of burst directly-enlarging system and its DS waveform that happens suddenly |
Non-Patent Citations (1)
| Title |
|---|
| 黄飞翔: "低信噪比突发通信中信号捕获的研究与实现", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109586760B (en) | 2021-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105282021B (en) | Signal concentrator equipment | |
| EP2518961B1 (en) | Method and device for detecting primary synchronization signal and generating sequence in long term evolution (lte) system | |
| CN104811222B (en) | A kind of method for designing of radar-communication integration signal | |
| US10985957B2 (en) | Mixed numerology of DMA system for single DFT receiver | |
| WO2011040789A3 (en) | Method and apparatus for transmitting data in wlan system | |
| CN106953823B (en) | A kind of wireless communication high-precision frame synchornization method based on synchronizing sequence | |
| CN110098908A (en) | PBCH transmission method and device | |
| WO2017196220A1 (en) | Wireless communication device, transmitter and methods therein | |
| KR100791823B1 (en) | Apparatus and method for synchronizing signal analyzer | |
| CN1860708B (en) | Frequency combining apparatus and frequency combining method | |
| US6728306B1 (en) | Method and apparatus for synchronizing a DS-CDMA receiver | |
| Zhang et al. | ZCNET: Achieving high capacity in low power wide area networks | |
| CN106788958B (en) | Signal synchronization method and system | |
| CN109586760A (en) | A kind of wireless communications method and system adapting to narrow pulse signal | |
| CN109039968B (en) | Data receiving method and device based on narrow-band Internet of things terminal | |
| US9712366B2 (en) | Data receiving method and receiver | |
| CN104901918A (en) | Method for generating OFDM (orthogonal frequency division multiplexing) data sequence based on Chirp signal and synchronization method | |
| CN109274620A (en) | A kind of frequency shift (FS) determines method and device | |
| CN108055222A (en) | Data processing method and intelligent terminal based on ofdm system | |
| CN107196884B (en) | A kind of method and apparatus of signal processing | |
| CN112583562B (en) | Data transmission method and device | |
| JP3531824B2 (en) | Orthogonal frequency division multiplexing signal transmission / reception system and orthogonal frequency division multiplexing signal transmission / reception method | |
| JP3531826B2 (en) | Orthogonal frequency division multiplexing signal transmission / reception system and orthogonal frequency division multiplexing signal transmission / reception method | |
| JP3531830B1 (en) | Orthogonal frequency division multiplexing signal transmission / reception system and orthogonal frequency division multiplexing signal transmission / reception method | |
| JP3531829B2 (en) | Orthogonal frequency division multiplexing signal transmission / reception system and orthogonal frequency division multiplexing signal transmission / reception method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |