CN109039973A - A kind of transmission method of binary frequency shift keying signal - Google Patents
A kind of transmission method of binary frequency shift keying signal Download PDFInfo
- Publication number
- CN109039973A CN109039973A CN201811076545.5A CN201811076545A CN109039973A CN 109039973 A CN109039973 A CN 109039973A CN 201811076545 A CN201811076545 A CN 201811076545A CN 109039973 A CN109039973 A CN 109039973A
- Authority
- CN
- China
- Prior art keywords
- signal
- subsequence
- decoding
- sequence
- adjudicated
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/106—M-ary FSK
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
A kind of transmission method of binary frequency shift keying signal, the following steps are included: being grouped to traditional 2FSK signal, and each packet signal is converted into the new packet signal comprising 2 continuous zero-signals and 6 2FSK signals according to specific mapping relations, new packet signal is then sent to communication channel after channel interleaving；Receiving end is upon receipt of the signals, signal will first be received and carry out signal group demodulating again by inverse channel intertexture, the position of the zero-signal in each packet signal is judged based on signal energy size when to the demodulation of signal subsequence, then the parsing result of other 6 fsk signals is obtained according to inverse mapping relationship, 8 are received the parsing result composition decoding subsequence of signal, the signal of all decoding subsequence composition transmission.The present invention can obtain transmitted error rate performance more lower than traditional 2FSK modulation system by improving to transmission mechanism in the identical rate of information throughput.
Description
Technical field
The invention belongs to field of communication technology more particularly to a kind of transmission sides of improved binary frequency shift keying signal
Method.
Background technique
M rank frequency shift keying (M-Frequency Shift Keying, abbreviation M-FSK) is passed using the frequency variation of carrier wave
Digital information is passed, is to go keyed carrier frequency using the discrete characteristics taking value of baseband digital signal to transmit a kind of number of information and adjust
Technology processed.FSK modulation is since Project Realization is fairly simple, the better performances of antinoise and anti-attenuation, in middle slow data transmission
In be widely applied.It wherein, is more commonly exactly the double frequency FSK system that binary ones and 0 are carried using two frequencies,
That is Binary Frequency Shift Keying (abbreviation 2FSK) transmission technology.
In the transmission time of a signal chip, 2FSK transmission technology sends 2 different carrier frequencies f by selection1、
f2(f1≠f2) signal carry digital information, wherein binary digit " 0 " corresponds to carrier frequency f1, binary digit
" 1 " corresponds to carrier frequency f2, the form of the signal of 2FSK transmission are as follows:
A in formulanFor binary digit bit sequence, T is a signal chip delay, and N is signal conveying length, in number
In word Transmission system, the basic unit of information transmission is byte (1 byte=8 bits), therefore usually N is 8 integral multiple.
Since digital communication system is subjected to power constraints, when transmission inclement condition, even if transmitting terminal uses property
The 2FSK modulation technique of lowest-order that can be best, the error rate of message transmitting procedure is it is possible to the requirement for being higher than communication system refers to
Mark, not can guarantee good signal transmission performance.
Summary of the invention
The purpose of the present invention is to provide one kind can be with the biography of the binary frequency shift keying signal of promotion signal transmission performance
Transmission method.
To achieve the goals above, the present invention takes following technical solution:
A kind of transmission method of binary frequency shift keying signal, comprising the following steps:
S1, by binary digit bit sequence [a to be transmitted1,a2,…,an,…,aN] be grouped, obtain multiple points
Group signal, each packet signal include 8 elements, k-th of packet signal AkIt is denoted as: Ak=[an',an'+1,...,an'+7], n '=
8k-7, k=1,2 ..., N/8, N are the conveying length of binary digit bit sequence；
S2, each packet signal is converted according to mapping relations respectively, obtains new packet signal, k-th is grouped
Signal AkAfter Mapping and Converting, obtained new packet signal AAkAre as follows:
Θ indicates zero-signal；
S3, all new packet signals for obtaining Mapping and Converting form one-dimensional vector X, X=[an AA1,AA2,AA3,
AA4,AA5,AA6,AA7,AA8]=[x1,x2,...,xN], xnFor the nth elements in one-dimensional vector X, n=1,2 ..., N；
S4, one-dimensional vector X is interleaved, is written in column, read by row, obtain trinary data stream XX；
S5, trinary data stream XX is modulated, obtains modulated signal Sn(t)；
xxnFor the nth elements in trinary data stream XX, f1、f2Respectively
For carrier frequency corresponding with " 0 ", " 1 ", t is sending time；
S6, transmitting terminal are by modulated signal Sn(t) to channel, receiving end connects according to traditional 2FSK signal receiver system for transmitting
The collection of letters number, obtains the 1st sequence Y1=[y to be adjudicated1,1,y1,2,…,y1,N] and the 2nd sequence Y2=[y to be adjudicated2,1,y2,2,…,
y2,N]；
S7, two groups of sequences to be adjudicated are carried out with inverse intertexture respectively, is written in column, is read by row, the 1st is obtained and inverse interweaves wait sentence
The certainly inverse sequence YY2 to be adjudicated that interweaves of sequence YY1 and the 2nd；
S8, the 1st inverse inverse sequence YY2 to be adjudicated that interweaves of the sequence YY1 and the 2nd to be adjudicated that interweaves is grouped respectively, is each got
To N/8 grouping subsequence, each grouping subsequence includes 8 signal values, corresponding in sequence wait adjudicate against interweaving by two
The grouping subsequence of serial number is combined decoding, first obtains the decoding of 2 receptions signal corresponding with symbol Θ as a result, obtaining again
The decoding of remaining 6 receptions signal is as a result, the decoding result of 8 reception signals forms a decoding subsequence；
The decoding procedure for being grouped subsequence is as follows:
The 1st grouping subsequence [yy1 of interweave to be adjudicated sequence YY1 inverse for the 1st1,yy12,yy13,yy14,yy15,
yy16,yy17,yy18] and the 2nd inverse sequence YY2 to be adjudicated that interweaves the 1st grouping subsequence [yy21,yy22,yy23,yy24,
yy25,yy26,yy27,yy28],
Enable Pm=| yy12m-1|2+|yy12m|2+|yy22m-1|2+|yy22m|2, m=1,2,3,4；
Compare P1、P2、P3And P4Value, find out minimum value P thereinr=min (P1,P2,P3,P4), r P1、P2、P3And P4
The subscript of middle minimum value；
Based on r value, the 1st and the 2nd for obtaining the 1st decoding subsequence receives the decoding of signal (bit) as a result, i.e.
And it is based on r value, abandon the 1st grouping subsequence and the 2nd inverse sequence to be adjudicated that interweaves of the 1st inverse sequence to be adjudicated that interweaves
Two remaining 6 elements of grouping subsequence are denoted as [m1 by corresponding element in the 1st grouping subsequence of column1,m12,m13,
m14,m15,m16] and [m21,m22,m23,m24,m25,m26], using traditional 2FSK signal interpretation algorithm to the 1st decoding
The remaining 6 receptions signal of sequence is decoded:
The decoding result of 8 reception signals forms the 1st decoding subsequence, in the same manner successively to two inverse friendships
It knits and is decoded wait adjudicate remaining grouping subsequence in sequence, after obtaining all decoding subsequences, subsequence group will be decoded
Synthesize transmitted signal.
From the above technical scheme, the method for the present invention introduces in traditional 2FSK technical foundation based on continuous zero-signal
Novel information carrying mode, in the transmitted signals comprising 3/4 2FSK modulated signal and 1/4 zero-signal, only due to spacing wave
Time interval resource is occupied, power resource is not take up, therefore power can be transferred on other 2FSK signals, improves 2FSK tune
The received signal to noise ratio of signal processed, while the information carrying mode formed using the locational uncertainty of spacing wave, receiver is to zero
The error rate of the location algorithm of signal is much smaller than the error rate of tradition 2FSK modulation system, it is possible thereby to which the demodulation for reducing signal is wrong
Accidentally rate.The method of the present invention takes full advantage of the time diversity gain of wireless channel, compared with traditional 2FSK modulator approach, identical
The rate of information throughput in the case of can generally obtain transmitted error rate performance more lower than traditional 2FSK modulation system and
Certain performance of BER gain.
Detailed description of the invention
It in order to illustrate the embodiments of the present invention more clearly, below will be to required use in embodiment or description of the prior art
Attached drawing do simple introduction, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the performance of BER of the method for the present invention and traditional 2FSK transmission method in the case of Gaussian white noise channel
Curve graph.
Specific embodiment
In order to above and other objects of the present invention, feature and advantage can be become apparent from, the embodiment of the present invention is cited below particularly,
And cooperate appended diagram, it is described below in detail.
The basic ideas of the method for the present invention are: being grouped to traditional 2FSK signal, and according to specific mapping relations
Each packet signal is converted into the new packet signal comprising 2 continuous zero-signals and 6 2FSK signals, then will newly be grouped letter
Number communication channel is sent to after channel interleaving；Receiving end upon receipt of the signals, will first receive signal and hand over by inverse channel
It knits and carries out signal group demodulating again, when demodulation judges the position of the zero-signal in each packet signal based on signal energy size
It sets, the parsing result of other 6 fsk signals is then obtained according to inverse mapping relationship, by improving to transmission mechanism, with reality
Better laser propagation effect is obtained in the case where present identical transmission rate.
It is core of the invention thought above, the technical solution of the embodiment of the present invention will be carried out clearly and completely below
Description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art obtain without making creative work
Example, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
It is different from other way described herein using other and implements, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
The transmission method of improved 2FSK signal of the invention, comprising the following steps:
S1, by binary digit bit sequence [a to be transmitted1,a2,…,an,…,aN] be grouped, n=1,2 ...,
N, N are the conveying length of binary digit bit sequence, obtain multiple packet signals, and each packet signal includes 8 elements (letter
Number value), k-th of packet signal AkIt is denoted as: Ak=[an',an'+1,...,an'+7], n '=8k-7, k=1,2 ..., N/8；
S2, each packet signal is respectively converted into new packet signal according to mapping relations, for k-th of packet signal Ak,
After the conversion of following mapping relations, obtained new packet signal AAkAre as follows:
Θ indicates zero-signal, is
It is different from the symbol of binary digit bit 0 and 1；
With the 1st packet signal A1For, A1=[a1,a2,a3,a4,a5,a6,a7,a8], ai=0/1, i=1,2 ..., 8,
The 1st new packet signal obtained according to the conversion of following mapping relations
S3, all new packet signals obtained after mapping are formed into one-dimensional vector X, X=[an AA containing N number of element1,
AA2,AA3,AA4,AA5,AA6,AA7,AA8]=[x1,x2,...,xN], xnFor the nth elements in one-dimensional vector X, xn=0/1/
Θ；
S4, one-dimensional vector X is interleaved, is written in column, read by row, obtain trinary data stream XX；
It is written in column are as follows:
It is read by row are as follows:
S5, the trinary data stream XX obtained after intertexture is modulated, obtains modulated signal Sn(t)；
xxnFor in trinary data stream XX
N element, f1、f2Carrier frequency respectively corresponding with symbol " 0 " or " 1 ", t are sending time, and T is a signal chip delay, n
=1,2 ..., N；
S6, transmitting terminal are by modulated signal Sn(t) to channel, receiving end connects according to traditional 2FSK signal receiver system for transmitting
It collects mail number, that is, the use of two frequency bins is respectively f1And f2Bandpass filter carry out matched filtering and sampling to receiving signal respectively
Afterwards, the sequence to be adjudicated that two groups of length are N: the 1st sequence Y1=[y to be adjudicated is obtained1,1,y1,2,…,y1,N] and the 2nd sequence to be adjudicated
Arrange Y2=[y2,1,y2,2,…,y2,N]；
S7, two groups of sequences to be adjudicated are carried out with inverse intertexture respectively, is written in column, is read by row, obtain two groups it is inverse interweave to
Judgement sequence: the 1st inverse inverse sequence YY2 to be adjudicated that interweaves of the sequence YY1 and the 2nd to be adjudicated that interweaves；
1st sequence Y1 to be adjudicated is written in column are as follows:
It is read by row are as follows:
2nd sequence Y2 to be adjudicated is written in column are as follows:
It is read by row are as follows:
S8, two groups of inverse sequence YY1 and YY2 to be adjudicated that interweave are grouped respectively, each grouping sub-series of packets is containing 8 letters
Number value, respectively obtains N/8 grouping subsequence, and each length for being grouped subsequence is 8, by two against interweaving wait adjudicate in sequence
The grouping subsequence of corresponding serial number is combined decoding, first obtains the decoding of 2 receptions signal corresponding with symbol Θ as a result, again
Obtain remaining 6 receptions signal decodes decoding results one decoding subsequence of composition as a result, 8 reception signals, obtains
After all decoding subsequences, combine decoding subsequence to obtain transmitted signal；
The decoding procedure for being grouped subsequence is as follows:
The 1st grouping subsequence [yy1 of interweave to be adjudicated sequence YY1 inverse for the 1st1,yy12,yy13,yy14,yy15,
yy16,yy17,yy18] and the 2nd inverse sequence YY2 to be adjudicated that interweaves the 1st grouping subsequence [yy21,yy22,yy23,yy24,
yy25,yy26,yy27,yy28],
Enable Pm=| yy12m-1|2+|yy12m|2+|yy22m-1|2+|yy22m|2, m=1,2,3,4；
Compare P1、P2、P3And P4Value, find out minimum value P thereinr=min (P1,P2,P3,P4), r P1、P2、P3And P4
The subscript of middle minimum value, for example, if P1、P2、P3And P4In minimum value be P3, then r=3；
Based on r value, the 1st and the 2nd for obtaining the 1st decoding subsequence receives the decoding of signal (bit) as a result, i.e.
Based on r value, corresponding element in the 1st grouping subsequence of YY1 and the 1st grouping subsequence of YY2 is abandoned, it will
Two signals of the grouping subsequence residue containing 6 elements are denoted as [m11,m12,m13,m14,m15,m16] and [m21,m22,m23,
m24,m25,m26], the remaining 6 reception signals of the 1st decoding subsequence are carried out using traditional 2FSK signal interpretation algorithm
Decoding:
The decoding procedure of repeated packets subsequence successively remains two against interweaving using identical method wait adjudicate in sequence
Under the 2nd, 3 ..., N/8 grouping subsequence decoded, 2nd point of the sequence YY1 to be adjudicated that interweaves such as inverse for the 1st
Group subsequence [yy19,yy110,yy111,yy112,yy113,yy114,yy115,yy116] and the 2nd inverse interweave sequence YY2's to be adjudicated
2nd grouping subsequence [yy29,yy210,yy211,yy212,yy213,yy214,yy215,yy216], according to aforementioned PmCalculating it is public
Formula calculates P1、P2、P3And P4Value, that is, P1=| yy19|2+|yy110|2+|yy29|2+|yy210|2, P2=| yy111|2+|yy112
|2+|yy211|2+|yy212|2, P3=| yy113|2+|yy114|2+|yy213|2+|yy214|2, P4=| yy115|2+|yy116|2+|
yy215|2+|yy216|2, minimum value therein is then found out, to determine r value, to obtain the 1st, the 2 of the 2nd decoding subsequence
The decoding of a decoding result for receiving signal and remaining 6 receptions signals is as a result, the decoding results of 8 reception signals form the
2 decoding subsequences, and so on, N/8 decoding subsequence is obtained, all decoding subsequences are combined into transmitted letter
Number.
It is sent and received in mechanism by above-mentioned signal as can be seen that of the invention by binary system to be transmitted (0 and 1) data
Stream carries out the packet transaction that length is 8, then every group of data is mapped to one by one trinary data group (0,1 and the special symbol of equal length
Number Θ), after carrying out channel interleaving to trinary data group, 3/4 0 and 1 element is accounted for according to traditional 2FSK method in data flow
It is modulated, and the remaining 1/4 additional character Θ of accounting for is the zero-signal for not sending any signal；Receiver passes through Signal Matching
After filtering and sampling, carry out carrying out the packet transaction that length is 8, then equally then against interweaving with energy size to signal is received
2 continuous symbol Θ in each trinary data group are positioned, obtain the decoding of 2 bits accordingly as a result, then basis
Positioning result decodes to obtain the numerical value of remaining 6 element of the trinary data group using traditional 2FSK algorithm.
Since 2 Θ elements in each trinary data group are to carry without the zero-signal of any transmitting signal at two
Corresponding reception signal is all pure noise signal in wave working frequency, and remaining 60 and 1 element correspond to 2FSK energy letter
Number, therefore corresponding reception signal is energy signal polluted by noise, another carrier wave work in a carrier operation frequency
Corresponding reception signal is pure noise signal on working frequency, i.e.,Formula
In ρ indicate that the average signal-to-noise ratio of transmitting signal is (6 remaining due to containing 2 zero-signals in 8 chip delays
8/6), h indicates the channel fading factor of transmitting signal to the transmitting power promotion of 2FSK signal, since packet data have passed through letter
Road interleaving treatment, the channel fading factor is mutually indepedent, and w represents noise item, for mutually indepedent, mean value 0, the real height that variance is 1
This stochastic variable.
And if only if in every group of trinary data the corresponding reception signal energy of 2 Θ elements and be minimum value when, receive
Their position can be properly positioned just now, otherwise mistake will occur in positioning, and in addition to will lead to the 1st and the 2nd ratio
Special decoding error, can also related influence other 60 and 1 elements demodulation work, it can thus be seen that mistake of the invention
Rate performanceIn formulaIndicate that 4 mutually independent pure are made an uproar
Acoustical signal w1、w2、w3And w4The sum of energy, k=1,2,3,4,It indicates
The sum of the energy of the energy of 2 mutually independent pure noise signals and other two 2FSK energy signal polluted by noise, formula
In hkFor the corresponding channel fading factor of the fsk signal,For 4 mutually indepedent, mean values 0, the real Gauss that variance is 1 with
Machine variable.
Emulation experiment is carried out using traditional traditional 2FSK transmission method and the method for the present invention, under Gaussian white noise channel
Obtained performance of BER curve is as shown in Figure 1.It will be seen from figure 1 that with the increase of Signal-to-Noise, the method for the present invention
Error rate fall off rate be apparently higher than the bit error rate fall off rate of traditional 2FSK transmission method under identical parameters；Signal letter
When making an uproar than 10dB, the error rate (about 10 of the method for the present invention-4) only tradition 2FSK transmission method bit error rate (about 10-3)
1/10 or so, and with the increase of transmitting Signal-to-Noise, the difference further expansion of the two.
In the case where the method for the present invention low error rate, receiving end not only can demodulate every group with low-down error rate
The the 1st, 2 element in binary data that length is 8, while the signal of 1/4 ratio prevents take up power resource, therefore other 3/4
The transmission power of the 2FSK symbol of ratio can be improved 8/6 times, to reduce its demodulation error rate for corresponding to 6 binary datas.
Therefore it sees on the whole, the method for the present invention can obtain in frequency efficiency situation identical with tradition 2FSK modulation technique
Greater than 10 × log10 (8/6)=1.25dB performance of BER gain.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to embodiment illustrated herein, and is to fit to consistent with the principles and novel features disclosed in this article
Widest range.
Claims (1)
1. a kind of transmission method of binary frequency shift keying signal, which comprises the following steps:
S1, by binary digit bit sequence [a to be transmitted1,a2,…,an,…,aN] be grouped, obtain multiple grouping letters
Number, each packet signal includes 8 elements, k-th of packet signal AkIt is denoted as: Ak=[an',an'+1,...,an'+7], n '=8k-
7, k=1,2 ..., N/8, n=1,2 ..., N, N are the conveying length of binary digit bit sequence；
S2, each packet signal is converted according to mapping relations respectively, obtains new packet signal, k-th of packet signal AkPass through
After Mapping and Converting, obtained new packet signal AAkAre as follows:
Θ indicates zero-signal；
S3, all new packet signals for obtaining Mapping and Converting form one-dimensional vector X, X=[an AA1,AA2,AA3,AA4,AA5,
AA6,AA7,AA8]=[x1,x2,...,xN], xnFor the nth elements in one-dimensional vector X；
S4, one-dimensional vector X is interleaved, is written in column, read by row, obtain trinary data stream XX；
S5, trinary data stream XX is modulated, obtains modulated signal Sn(t)；
xxnFor the nth elements in trinary data stream XX, f1、f2Respectively with
" 0 ", " 1 " corresponding carrier frequency, t is sending time；
S6, transmitting terminal are by modulated signal Sn(t) transmitting to channel, receiving end receives letter according to traditional 2FSK signal receiver system
Number, obtain the 1st sequence Y1=[y to be adjudicated1,1,y1,2,…,y1,N] and the 2nd sequence Y2=[y to be adjudicated2,1,y2,2,…,y2,N]；
S7, two groups of sequences to be adjudicated are carried out with inverse intertexture respectively, is written in column, is read by row, the 1st inverse sequence to be adjudicated that interweaves is obtained
The inverse sequence YY2 to be adjudicated that interweaves of column YY1 and the 2nd；
S8, the 1st inverse inverse sequence YY2 to be adjudicated that interweaves of the sequence YY1 and the 2nd to be adjudicated that interweaves respectively is grouped, respectively obtains N/8
A grouping subsequence, each grouping subsequence include 8 signal values, and serial number is corresponded in sequence wait adjudicate against interweaving by two
Grouping subsequence is combined decoding, first obtains the decoding of 2 receptions signal corresponding with symbol Θ as a result, obtaining again remaining
The decoding of 6 reception signals is as a result, the decoding result of 8 reception signals forms a decoding subsequence；
The decoding procedure for being grouped subsequence is as follows:
The 1st grouping subsequence [yy1 of interweave to be adjudicated sequence YY1 inverse for the 1st1,yy12,yy13,yy14,yy15,yy16,
yy17,yy18] and the 2nd inverse sequence YY2 to be adjudicated that interweaves the 1st grouping subsequence [yy21,yy22,yy23,yy24,yy25,
yy26,yy27,yy28],
It enables
Compare P1、P2、P3And P4Value, find out minimum value P thereinr=min (P1,P2,P3,P4), r P1、P2、P3And P4In most
The subscript of small value；
Based on r value, the 1st and the 2nd for obtaining the 1st decoding subsequence receives the decoding of signal (bit) as a result, i.e.
And it is based on r value, abandon the 1st grouping subsequence and the 2nd inverse sequence to be adjudicated that interweaves of the 1st inverse sequence to be adjudicated that interweaves
Two remaining 6 elements of grouping subsequence are denoted as [m1 by corresponding element in the 1st grouping subsequence1,m12,m13,m14,
m15,m16] and [m21,m22,m23,m24,m25,m26], using traditional 2FSK signal interpretation algorithm to the 1st decoding subsequence
Remaining 6 receptions signal is decoded:
The decoding results of 8 reception signals form the 1st decoding subsequence, in the same manner successively to two inverse intertextures to
Remaining grouping subsequence is decoded in judgement sequence, and after obtaining all decoding subsequences, decoding subsequence is combined into
The signal transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076545.5A CN109039973A (en) | 2018-09-14 | 2018-09-14 | A kind of transmission method of binary frequency shift keying signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076545.5A CN109039973A (en) | 2018-09-14 | 2018-09-14 | A kind of transmission method of binary frequency shift keying signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109039973A true CN109039973A (en) | 2018-12-18 |
Family
ID=64622378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811076545.5A Withdrawn CN109039973A (en) | 2018-09-14 | 2018-09-14 | A kind of transmission method of binary frequency shift keying signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109039973A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247869A (en) * | 2019-02-21 | 2019-09-17 | 北京遥感设备研究所 | 2FSK decoding system and method based on data encoding type and verification mode |
| CN113726704A (en) * | 2021-07-26 | 2021-11-30 | 北京理工大学 | Frequency shift chirp spread spectrum modulation and demodulation method based on grouping |
| CN114760638A (en) * | 2022-04-29 | 2022-07-15 | 金陵科技学院 | Method for realizing spread spectrum MSK baseband signal matched filter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496005A (en) * | 2002-07-31 | 2004-05-12 | 中国科学院过程工程研究所 | Coding method of binary numerical signal and its signal transmission method and circuit |
| CN103346857A (en) * | 2013-05-31 | 2013-10-09 | 广州海格通信集团股份有限公司 | Novel BPSK signal transmission method based on binary data preprocessing |
| CN103346856A (en) * | 2013-05-31 | 2013-10-09 | 广州海格通信集团股份有限公司 | BPSK signal transmission method based on empty signals |
| CN105007249A (en) * | 2015-06-04 | 2015-10-28 | 重庆大学 | 2FSK-based wireless energy and signal synchronous transmission system and method |
| CN105634722A (en) * | 2015-12-28 | 2016-06-01 | 西安电子科技大学 | Anti-interception method for camouflaging MFSK as frequency hopping system |
| CN105915484A (en) * | 2016-04-15 | 2016-08-31 | 广州海格通信集团股份有限公司 | Single-tone and multi-tone interference de-noising method for broadband BPSK signal |
-
2018
- 2018-09-14 CN CN201811076545.5A patent/CN109039973A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496005A (en) * | 2002-07-31 | 2004-05-12 | 中国科学院过程工程研究所 | Coding method of binary numerical signal and its signal transmission method and circuit |
| CN103346857A (en) * | 2013-05-31 | 2013-10-09 | 广州海格通信集团股份有限公司 | Novel BPSK signal transmission method based on binary data preprocessing |
| CN103346856A (en) * | 2013-05-31 | 2013-10-09 | 广州海格通信集团股份有限公司 | BPSK signal transmission method based on empty signals |
| CN105007249A (en) * | 2015-06-04 | 2015-10-28 | 重庆大学 | 2FSK-based wireless energy and signal synchronous transmission system and method |
| CN105634722A (en) * | 2015-12-28 | 2016-06-01 | 西安电子科技大学 | Anti-interception method for camouflaging MFSK as frequency hopping system |
| CN105915484A (en) * | 2016-04-15 | 2016-08-31 | 广州海格通信集团股份有限公司 | Single-tone and multi-tone interference de-noising method for broadband BPSK signal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247869A (en) * | 2019-02-21 | 2019-09-17 | 北京遥感设备研究所 | 2FSK decoding system and method based on data encoding type and verification mode |
| CN110247869B (en) * | 2019-02-21 | 2021-11-23 | 北京遥感设备研究所 | 2FSK decoding system based on data coding type and checking mode |
| CN113726704A (en) * | 2021-07-26 | 2021-11-30 | 北京理工大学 | Frequency shift chirp spread spectrum modulation and demodulation method based on grouping |
| CN114760638A (en) * | 2022-04-29 | 2022-07-15 | 金陵科技学院 | Method for realizing spread spectrum MSK baseband signal matched filter |
| CN114760638B (en) * | 2022-04-29 | 2023-05-09 | 金陵科技学院 | Implementation method suitable for spread spectrum MSK baseband signal matched filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104601513B (en) | Method and arrangement for being communicated in low power radio network | |
| CN101795257B (en) | Method for offset-modulation orthogonal frequency division multiplexing transmission with cyclic prefix | |
| CN105227513B (en) | Method and apparatus for low power radio network | |
| AU2004307361B2 (en) | Apparatus and method for assigning subchannels in an OFDMA communication system | |
| CN1849769B (en) | Multiple antenna systems and methods using high-throughput space-frequency block codes | |
| US20050237923A1 (en) | Multi-bank OFDM high data rate extensions | |
| CN102007747A (en) | An improved dual carrier modulation precoding | |
| CN104468451B (en) | A kind of multiple stage circulation shift keying modulation demodulation method based on transform-domain communication | |
| KR100470401B1 (en) | A wireless communication system and method using grouping Maximum Lilelihood Detection | |
| CN105187347B (en) | Polynary orthogonal chaos shift keying modulation demodulation method | |
| CN109039973A (en) | A kind of transmission method of binary frequency shift keying signal | |
| CN106559144A (en) | OFDM MFSK underwater acoustic communication methods based on technology time reversal | |
| CN105554865A (en) | MIMO-SCMA system downlink design method based on STBC | |
| CN101626284B (en) | Method for rotation modulation signal of MIMO system | |
| CN104579613B (en) | A kind of combined coding modulation method based on no-rate codes and V OFDM | |
| CN114978432B (en) | Rate adaptive modulation method for radar communication integration | |
| Kumar et al. | A survey on NOMA techniques for 5G scenario | |
| CN201312315Y (en) | System, emitting device and receiving device for eliminating interference close to base station | |
| CN102983945B (en) | Wireless communication method for realizing physical layer network coding in multi-user channel | |
| CN114978832A (en) | Radar communication integrated modulation signal generation method with channel adaptability | |
| CN101467376B (en) | A kind of method and apparatus of space-time-frequency encoding | |
| CN106102045A (en) | A kind of secret communication method using Fourier Transform of Fractional Order | |
| CN101040540A (en) | Coding modulation and demodulation system and method for transmitting and receiving signal thereof | |
| CN104486284A (en) | Enhanced six-dimensional 64PSK constellation-based orthogonal frequency division multiplexing method | |
| CN109067686A (en) | Method for transmitting signals based on binary phase shift keying modulation and orthogonal frequency division multiplexi |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181218 |
|
| WW01 | Invention patent application withdrawn after publication |