CN110198177A - A kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code - Google Patents
A kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code Download PDFInfo
- Publication number
- CN110198177A CN110198177A CN201910374886.9A CN201910374886A CN110198177A CN 110198177 A CN110198177 A CN 110198177A CN 201910374886 A CN201910374886 A CN 201910374886A CN 110198177 A CN110198177 A CN 110198177A
- Authority
- CN
- China
- Prior art keywords
- frequency
- feature
- signal
- hopping
- pseudorandom
- 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
- H04B1/713—Spread spectrum techniques using frequency hopping
-
- 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
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to a kind of multi-sequence joint frequency-hopping communication methods of combination pseudorandom feature code, on the basis of multi-sequence joint frequency hopping, on the carrier wave that pseudorandom feature code is modulated to frequency hopping by way of with interior spread spectrum, increase the characteristic information in addition to carrier frequency for data channel, as the mark for distinguishing signal source.Receiver is made decisions using the correlation between known pseudo-random condition code and transmitting signal, reduces the error code that interference signal appears in the antithesis channel of multisequencing frequency hopping and causes.The present invention further improves the anti-interference ability of multi-sequence joint frequency hopping communications.
Description
Technical field
The present invention relates to a kind of anti-interference frequency-hopping communication methods, more particularly to a kind of more sequences of combination pseudorandom feature code
Contigency closes frequency-hopping communication method.
Background technique
Frequency hopping communications refers to the communication mode that the carrier wave of transmission signal jumps in transmission band according to pseudorandom rule, receives
The carrier frequency that hair both sides transmit signal changes according to scheduled frequency hop sequences pseudorandom.Since disturber does not know current frequency hopping
The frequency that communication system uses, therefore frequency-hopping communication system cannot effectively be interfered.Frequency hopping communications has good anti-
Interference and ability of anti-interception, detection probability is low and can inhibit frequency selective fading, in military communication especially shortwave/ultrashort wave
It is widely used in tactical communication.
With the development of perturbation technique, tracking interference becomes the biggest threat that frequency hopping communications faces, and tracking interference can be
The currently used frequency of frequency-hopping system is captured in short time and is interfered, and is substantially cut down frequency hopping communications and is produced by hiding interference
Raw Frequency Hopping Processing Gain.With the development of tracking perturbation technique, tracking interference is several to the frequency hopping pattern intercept probability under certain hop rate
Reach 100%, frequency hopping communications is made to lose anti-jamming gain.
In recent years, the Anti-Jamming Technique of frequency-hopping communication system has also obtained certain development.It can be under conventional frequency-hopping mode
Error code is reduced by modes such as channel coding, airspace interference eliminations, as the indemnifying measure after tracked interference effect.In addition to mending
Measure is repaid, the unconventional frequency-hopping mode confrontation tracking interference such as differential jumping frequency is had also appeared.Studying at present more is to utilize more sequences
Column frequency-hopping method indicates message using channel, and data channel and antithesis channel are pressed different frequency hop sequences jumps respectively, received
End is made decisions by detecting the energy of respective channels frequency point.Due to the signal that antithesis channel is not sent actually, tracking interference
Antithesis channel can not be captured and effectively interfered, the influence of tracking interference is reduced.This anti-tracking interference of frequency-hopping method
Effect is relatively good, however when interference signal collides antithesis channel, occur biggish energy on antithesis channel, the bit error rate is substantially
It is promoted.
Summary of the invention
The object of the present invention is to provide a kind of multi-sequence joint frequency-hopping communication methods of combination pseudorandom feature code, reduce more
Sequence hopping due to antithesis channel is disturbed caused by error code.
The present invention adopts the following technical scheme:
A kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code encodes pseudorandom feature as differentiation
The mark in signal source, by the carrier wave of pseudorandom feature coded modulation to frequency hopping by way of with interior spread spectrum, for hair
The number of delivering letters and demodulated signal increase feature.
Wherein, the pseudorandom feature code be data channel increased the other feature information in addition to carrier frequency but with
User data is unrelated.
Specifically comprising signal emission process and signal receive process；
The signal emission process includes the following steps:
(1) error control coding is carried out to binary user data d (t) using channel coding and obtains sequence d to be sentc
(t)；
(2) by sequence d to be sentc(t) N binary signal d is converted ton(t)；
(3) in sequence mapping channel, N binary signal dn(t) transmitting which frequency hop sequences of signal behavior, the sequence pair are determined
The frequency answered is after frequency synthesizer synthesizes, as frequency-hopping carrier；
(4) in feature modulation channels, 2PSK modulation is carried out to the pseudorandom feature code c (t) as characteristic information, is generated special
Reference number；The generation clock of pseudorandom feature code is consistent with frequency-hopping system synchronised clock, in the synchronous case, modulates on carrier wave
Pseudorandom feature code be known to receiving end；
(5) frequency-hopping carrier that the characteristic signal of feature modulation module output is synthesized with sequence mapping channel is mixed, complete
After frequency spectrum shift, it is sent to radio-frequency front-end；
(6) after radio-frequency front-end completes bandpass filtering and power amplification, emitted by transmitting terminal antenna；
The signal receive process include the following steps:
(A) radiofrequency signal received from antenna is carried out low noise amplification, bandpass filtering, gain control by receiving end radio-frequency front-end
After system, it is sent to N number of receiving branch；
(B) N number of receiving branch concurrent working, corresponding N number of orthogonal frequency hop sequences；
For some receiving branch, the local frequency hop sequences that receiving end generates are synchronous with transmitting terminal holding, and receiving end is raw
It is synchronized at utilizing frequency hopping clock information to realize when pseudorandom feature code；
For each receiving branch, completes the intermediate-freuqncy signal that solution is jumped and be sent to energy detection module after feature demodulates
Carry out the detection of square law incoherent energy；
(C) it in each feature demodulation channel, is jumped with the pseudorandom feature code c (t) synchronous with transmitting terminal to solution is completed
Intermediate-freuqncy signal carry out feature demodulation, after demodulation carry out narrow-band filtering filtering interference signals；
(D) in each energy detection module, the signal after feature demodulation passes through narrow-band filtering, carries out the non-phase of square law
Dry detection, obtains N number of testing result, is sent to judging module and makes decisions；
(E) in judgement, the energy detection results of N number of receiving branch are made decisions；
(F) by N binary signal dn(t) it is converted to binary system and receives signal sequence dc(t)。
(G) to dc(t) channel decoding is carried out.
Wherein, in step (1), the channel coding method is convolutional code, Turbo code or RS code.
Wherein, in step (4), the pseudorandom feature code c (t) is using pseudo-random sequences such as m-sequences, and bit rate is lower than jump
Frequent point bandwidth, when use, are converted to bipolar code.
Wherein, in step (E), decision method is using hard decision or interpretation method is combined to carry out soft-decision.
Wherein, in step (E), the hard-decision method is, to N number of receiving branch, each receiving branch passes through square law
Noncoherent detection result is Ri, (i=1 ..., NS)；If testing result maximum value Rmax=max { R1,R2,...,RN}=Ri, Ri
Corresponding subchannel i is data channel.
Wherein, if the channel coding method in step (1) is convolutional code, step (G) selects Viterbi decoding.
The beneficial effects of the present invention are:
(1) it is worked together using multiple frequency hop sequences, user data is mapped as frequency hop sequences serial number, is finally presented as hair
The carrier frequency for penetrating signal indicates message using channel.
(2) with conventional frequency hopping communications the difference is that, utilize channel to indicate user data；It is different from multisequencing frequency hopping it
It is in having modulated the pseudorandom feature code unrelated with user data on carrier wave, which is that data channel is increased except carrier wave
Other feature information except frequency.
(3) during feature demodulates, receiver is reduced and special using the correlation of transmitting signal and feature demodulated signal
The sign incoherent interference signal of demodulated signal is influenced caused by judgement, it is possible to reduce interference signal appears in multisequencing frequency hopping
Antithesis channel and the error code caused.
(4) bit rate of pseudorandom feature code is lower than the bandwidth of frequency hopping frequency point, and receiving end can still use narrow-band reception,
Out-of-band interference will not be introduced because of modulation broadened signal frequency spectrum.
(5) multiple frequency hop sequences associated working change the condition that tracking interference works, and believe for multisequencing frequency hopping antithesis
Road, which is interfered, can just play positive effect；The variation of the difference on the frequency pseudorandom of antithesis channel and data channel, has reached antithesis
The purpose that channel is hidden under tracking interference reduces the disturbed probability of antithesis channel.
(6) on the frequency point of data channel, pseudorandom feature code is that data channel increases other spies in addition to frequency
Sign increases for receiver and distinguishes the ability for receiving signal energy source, reduces when there are hairs when interference signal for antithesis channel
The probability of raw error code, further improves the anti-interference ability of multi-sequence joint frequency hopping.
Detailed description of the invention
Fig. 1 is the multi-sequence joint frequency-hopping system transmitter architecture block diagram in conjunction with pseudorandom feature code；
Fig. 2 is the multi-sequence joint frequency-hopping system receiver block diagram in conjunction with pseudorandom feature code；
Fig. 3 is the multi-sequence joint Hopping frequencies selection course schematic diagram in conjunction with pseudorandom feature code；
Fig. 4 is the multi-sequence joint frequency-hopping characteristics demodulating process schematic diagram in conjunction with pseudorandom feature code；
Fig. 5 is the multi-sequence joint frequency hopping judging process schematic diagram in conjunction with pseudorandom feature code；
Fig. 6 is tracking interference ρrTo PRC-MSFH and FH/2FSK Control of Bit Error Rate figure (ρw=1/16, β=1)；
Fig. 7 Multi-tone jamming Q is to PRC-MSFH and MSFH Control of Bit Error Rate figure.
Specific embodiment
With reference to the accompanying drawing and technical solution of the present invention is described in further detail in example, but protection scope of the present invention is not
It is confined to as described below.
Embodiment
A kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code, user data by channel coding and into
After system conversion, user data is characterized with frequency hop sequences serial number, through frequency synthesizer as frequency hopping after corresponding frequency hop sequences output
Carrier wave.Characteristic information of the pseudorandom feature code sequence as data channel becomes characteristic signal, last feature letter after ovennodulation
It number is modulated on frequency-hopping carrier, is emitted by radio-frequency front-end by antenna.In receiving end, sent by the signal that radio-frequency front-end receives
To N number of receiving branch, each receiving branch carries out frequency-hopping synchronization to signal is received using local frequency hop sequences, completes frequency hopping solution
It adjusts.Then feature demodulation is carried out to signal, the signal after feature demodulation carries out square law incoherent energy after narrow-band filtering
The energy detection results of receiving branch are compared judgement by detection, are determined data channel, are carried out channel after system conversion and translate
Code, recovery obtain user data.
More specifically, it includes a signal step of transmitting and a signal receiving step.Assuming that sharing N number of frequency hopping
Sequence association work.
As shown in Figure 1, Figure 3, signal transmitting includes the following steps:
(1) information source (101) provides user data, and it is poor that channel coding module (102) carries out user data using convolutional code
Encoded data are converted to N binary signal in system conversion module (103) by mistake control coding.Mould is selected in frequency hop sequences
Block (104), N binary signal select the frequency hop sequences of corresponding serial number from frequency hop sequences collection (105), and the sequence current time is corresponding
Frequency point as carrier signal, is modulated in frequency hopping modulation module (109) with characteristic signal after frequency synthesis (106).
It is illustrated in figure 3 the frequency hop sequences selection course of sequence mapping channel, N binary signal, that is, sequence selection information,
Sequence selection module (302) corresponding frequency hop sequences of selection from frequency hop sequences collection (301) take out current time corresponding frequency point,
It is sent to frequency synthesizer and generates frequency-hopping carrier.
(2) in feature modulation channels, the baseband modulation of pseudorandom feature code is completed.Generate bipolarity pseudorandom feature code c
(t) characteristic information of (107) as data channel modulates the base for completing condition code in feature modulation module (108) by 2PSK
Band modulation, the bit rate of pseudorandom feature code c (t) are higher than frequency hopping rate and are lower than frequency hopping frequency point bandwidth.
(3) characteristic signal that feature modulation module (108) generates is produced in frequency hopping modulation module (109) and sequence mapping channel
Raw frequency-hopping carrier is mixed, is filtered.
(4) signal after frequency hopping modulation passes through hair after radio-frequency front-end (110) carry out bandpass filtering and power amplification
Penetrate end antenna (111) transmitting.
By taking N=2 as an example, it is assumed that frequency hop time slot length is T, symbol energy ES, hop bands total bandwidth is W, then sends
The equivalent expression of signal are as follows:
Signal transmits in awgn channel, then receiving signal can be equivalently represented are as follows:
R (t)=ejθ's(t)+n(t)+nJ(t) (2)；
Wherein n (t) is additive white Gaussian noise, and one-sided power spectrum density is N0, nJIt (t) is interference signal, θ ' is transmission
Phase difference in the process.Noise is zero mean Gaussian white noise, and note equivalent symbol signal-to-noise ratio is γ=ES/N0。
So far, step of transmitting is completed.
As shown in Fig. 2,4,5, signal reception includes the following steps:
(5) radiofrequency signal that receiving end front end (202) will be obtained from receiving antenna (201) carries out low noise amplification, band logical filter
N number of receiving branch is sent to after wave, gain control.
(6) the N number of receiving branch concurrent working in receiving end, function is identical, by taking receiving branch 1 as an example, frequency hopping demodulation module 1
(205) it completes to synchronize using self-synchronizing method first, completes synchronous local frequency hop sequences 1 (203) and send frequency information to frequency
Synthesis module (204) generates corresponding frequency hopping demodulated signal, completes mixing, filtering in frequency hopping demodulation module 1 (205), will receive
Signal is moved from frequency-hopping carrier to intermediate frequency, and feature demodulation module 1 (209) is eventually sent to.Utilize the synchronous puppet of frequency hopping clock information
Random character code (211) generates feature demodulated signal by feature modulation module (210), complete in feature demodulation module 1 (209)
The demodulation of characteristic information in pair signals.
(7) in each feature demodulation channel, characteristic solution is generated with the pseudorandom feature code sequence synchronous with transmitting terminal
Signal is adjusted, the intermediate-freuqncy signal after jumping to solution carries out feature demodulation, distinguishes the interference signal different from feature demodulation signal characteristic.
As shown in figure 4, the synchronizing information using frequency-hopping synchronization clock (401) is completed to the same of pseudorandom feature code (402)
Step, is modulated to feature demodulated signal by 2PSK for condition code in feature modulation module (403), with process narrow-band filtering (404)
Intermediate-freuqncy signal be mixed and demodulated.It is the signal for completing feature demodulation that signal after demodulation, which passes through narrow-band filtering (405),.
By taking N=2 as an example, receiving end use and transmitting terminal frequency hop sequences FS0And FS1Synchronous frequency hop sequences FS0' and FS1',
The method of synchronization uses self-synchronizing method, divides two-way control frequency synthesizer to generate solution and jumps signal.Pseudorandom feature code utilizes frequency hopping system
Clock information of uniting is synchronous with transmitting terminal pseudorandom feature code holding, and pseudorandom feature code c (t) is modulated to solution by 2PSK and jumps letter
On number.Incoherent energy detection, judgement amount r are carried out to two channels respectively to signal after intermediate frequency narrow-band filtering0And r1It indicates
The energy detection results of two sub-channels of user data " 0 " and " 1 " are represented, judgement amount r is detectediIt may be expressed as:
Si* (t) is to send signal Si(t) conjugation is the equivalent of demodulating process:
(8) as shown in figure 5, in each energy measuring channel, by taking energy measuring channel 1 as an example, after feature demodulation
Signal carries out square law noncoherent detection (502) after narrow-band filtering (501), finally by N number of energy measuring Air conduct measurement institute
It obtains judgement amount feeding decision device (507) to carry out selecting big hard decision, when energy measuring channel i exports maximum, judgement channel i is
Data channel, it is corresponding with the N binary signal after error control coding and system conversion.
(9) obtained N binary signal is adjudicated, first the number of users after system conversion (214) is reduced to error control coding
According to, then channel decoding (215) are carried out, the convolutional encoding that front is selected, therefore decoded here using Viterbi, it is reduced to user
Data.
So far, receiving step is completed.
Effect example
Fig. 6 illustrates tracking interference time ratio ρr(hereinafter referred to as to (hereinafter referred to as PRC-MSFH) of the invention and conventional frequency hopping
FH/2FSK the influence of the bit error rate), at this time jamming bandwidth ratio ρw=1/16, track success rate β=1.The bit error rate of the two is all
With interference time ratio ρrIncrease and increase.In identical interference time ratio ρrUnder, the bit error rate of PRC-MSFH is generally lower than
FH/2FSK.Under medium signal interference ratio, PRC-MSFH compares FH/2FSK, and there are about the gains of 3-5dB.
Fig. 7 is illustrated interferes single-tone number Q to the shadow of PRC-MSFH and MSFH (multisequencing frequency hopping) bit error rate under Multi-tone jamming
It rings.Multi-tone jamming can cause MSFH significantly to influence, and compared with MSFH, PRC-MSFH has about 6-7dB under medium signal interference ratio
Gain, anti-jamming effectiveness is obvious.The reason is that the pseudorandom feature code being added increases the spy other than frequency to signal is sent
Sign reduces signal and interferes the correlation between single-tone.In demodulating process, to data channel, pseudorandom feature code is by making
Interference single-tone constantly changes with the phase difference for sending signal, reduces influence of the interference single-tone to signal；To antithesis channel, receive
Interference single-tone is only deposited at end, and pseudorandom feature code, which passes through, changes the phase for interfering single-tone constantly, reduces interference single-tone to judgement
The influence of amount.Condition code coding rate is lower than hop bands width, and the single frequency hopping frequency point of receiver still narrow-band reception will not introduce
Out-of-band interference, therefore anti-jamming effectiveness is good.
Similar with MSFH, under certain signal interference ratio, there are optimum jamming single-tone number Q by PRC-MSFHoptReach the bit error rate most
Greatly, i.e., the worst Multi-tone jamming, as shown in fig. 7, signal interference ratio is bigger, QoptIt is smaller.When jamming power is smaller, disturber will be concentrated
Power realizes effectively interference when hitting data channel and antithesis channel on a small number of single-tones；When jamming power is larger, interference
Side will interfere more frequency points, hit data channel and antithesis channel with higher probability.
Embodiment described above only describe the preferred embodiments of the invention, and but it is not limited to this, this
The technical staff in field is easy to understand spirit of the invention according to above-described embodiment, and makes different amplification and variation, but
As long as it does not depart from the spirit of the invention, all within protection scope of the present invention.
Claims (9)
1. a kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code, which is characterized in that jumped in multi-sequence joint
It is data channel on pseudorandom feature code is modulated to frequency hopping by way of with interior spread spectrum carrier wave on the basis of frequency
Increase the characteristic information in addition to carrier frequency, as the mark for distinguishing signal source；Receiver utilizes known pseudo-random feature
Correlation between code and transmitting signal makes decisions.
2. a kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code according to claim 1, feature
It is comprising signal emission process and signal receive process；
The signal emission process includes the following steps:
Error control coding is carried out to binary user data d (t) using channel coding and obtains sequence d to be sentc(t)；
By sequence d to be sentc(t) N binary signal d is converted ton(t)；
(3) in sequence mapping channel, N binary signal dn(t) transmitting which frequency hop sequences of signal behavior determined, the sequence is corresponding
Frequency is after frequency synthesizer synthesizes, as frequency-hopping carrier；
(4) in feature modulation channels, 2PSK modulation is carried out to the pseudorandom feature code c (t) as characteristic information, generates feature letter
Number；
(5) frequency-hopping carrier that the characteristic signal of feature modulation module output is synthesized with sequence mapping channel is mixed, and completes frequency
After spectrum is moved, it is sent to radio-frequency front-end；
(6) after radio-frequency front-end completes bandpass filtering and power amplification, emitted by transmitting terminal antenna；
The signal receive process include the following steps:
(A) radiofrequency signal received from antenna is carried out low noise amplification, bandpass filtering, gain control by receiving end radio-frequency front-end
Afterwards, it is sent to N number of receiving branch；
(B) N number of receiving branch concurrent working, corresponding N number of orthogonal frequency hop sequences；
For some receiving branch, the local frequency hop sequences that receiving end generates are synchronous with transmitting terminal holding, and receiving end generates pseudo-
It is realized and is synchronized using frequency hopping clock information when random character code；
For each receiving branch, completes the intermediate-freuqncy signal that solution is jumped and be sent to energy detection module progress after feature demodulates
The detection of square law incoherent energy；
(C) in each feature demodulation channel, with the pseudorandom feature code c (t) synchronous with transmitting terminal in completion solution jump
Frequency signal carries out feature demodulation, and narrow-band filtering filtering interference signals are carried out after demodulation；
(D) in each energy detection module, the signal after feature demodulation passes through narrow-band filtering, carries out the incoherent inspection of square law
It surveys, obtains N number of testing result, be sent to judging module and make decisions；
(E) in judgement, the energy detection results of N number of receiving branch are made decisions；
(F) by N binary signal dn(t) it is converted to binary system and receives signal sequence dc(t)。
3. (G) is to dc(t) channel decoding is carried out.
4. a kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code according to claim 2, feature
It is, in step (1), the channel coding method is convolutional code, Turbo code or RS code.
5. a kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code according to claim 2, feature
It is, in step (4), the pseudorandom feature code c (t) is lower than frequency hopping channel band using the pseudo-random sequences such as m-sequence, bit rate
Width, when use, are converted to bipolar code.
6. a kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code according to claim 2, feature
It is, in step (E), decision method is using hard decision or interpretation method is combined to carry out soft-decision.
7. a kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code according to claim 5, feature
It is, in step (E), the hard-decision method is, to N number of receiving branch, each receiving branch passes through the incoherent inspection of square law
Survey result is Ri, (i=1 ..., NS)；If testing result maximum value Rmax=max { R1,R2,...,RN}=Ri, RiCorresponding son
Channel i is data channel.
8. a kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code according to claim 1, feature
It is, the generation clock of pseudorandom feature code is consistent with frequency-hopping system synchronised clock.
9. a kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code according to claim 1, feature
Be: the bit rate of pseudorandom feature code is lower than the bandwidth of frequency hopping frequency point, and narrow-band reception can be used in receiving end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910374886.9A CN110198177B (en) | 2019-05-07 | 2019-05-07 | Multi-sequence combined frequency hopping communication method combined with pseudo-random feature codes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910374886.9A CN110198177B (en) | 2019-05-07 | 2019-05-07 | Multi-sequence combined frequency hopping communication method combined with pseudo-random feature codes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110198177A true CN110198177A (en) | 2019-09-03 |
| CN110198177B CN110198177B (en) | 2021-10-08 |
Family
ID=67752407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910374886.9A Active CN110198177B (en) | 2019-05-07 | 2019-05-07 | Multi-sequence combined frequency hopping communication method combined with pseudo-random feature codes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110198177B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211808A (en) * | 2019-12-31 | 2020-05-29 | 四川大学 | Signal processing method and device under resource limitation and terminal equipment |
| CN111404579A (en) * | 2020-02-17 | 2020-07-10 | 济南浪潮高新科技投资发展有限公司 | Multi-sequence frequency hopping communication method, transmitter and receiver |
| CN113708797A (en) * | 2021-08-10 | 2021-11-26 | 中国科学院计算技术研究所 | Frequency hopping synchronization method and device for 5G NR |
| CN114024569A (en) * | 2021-11-03 | 2022-02-08 | 中国人民解放军63921部队 | Dual sequence frequency hopping communication system and method for integrating space flight measurement and control and data transmission |
| CN114337731A (en) * | 2021-11-30 | 2022-04-12 | 中国科学院半导体研究所 | Optical frequency hopping communication system and method |
| CN115549725A (en) * | 2022-10-10 | 2022-12-30 | 瑞兴恒方网络（深圳）有限公司 | Narrow-band frequency hopping multi-access communication algorithm and ARM implementation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964694A (en) * | 2010-09-27 | 2011-02-02 | 北京航空航天大学 | System and method for transmitting low interception signal of high-throughput and delay sensibility wireless network |
| KR20110085007A (en) * | 2010-01-18 | 2011-07-27 | 포항공과대학교 산학협력단 | Method of generating frequency hopping sequence by interleaving, frequency hopping sequence generator, apparatus for code division multiple access, and record medium for controlling method of the clock speed and the performing time of clock signal generator to make frequency hopping sequence |
| CN104393891A (en) * | 2014-11-27 | 2015-03-04 | 电子科技大学 | Communication method for driving frequency spreading/frequency hopping of direct sequence by adopting information |
| 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 |
| CN106788882A (en) * | 2016-11-16 | 2017-05-31 | 西安电子科技大学 | The incoherent multi-user test method and device of nonopiate multi-pulse modulation |
| CN109194365A (en) * | 2018-09-25 | 2019-01-11 | 中国人民解放军陆军工程大学 | A kind of two-dimensional pattern modulation frequency-hopping communication method |
| CN109586764A (en) * | 2018-11-21 | 2019-04-05 | 哈尔滨工业大学 | A kind of self adaptive frequency-hopping system and adaptive frequency hopping method based on FPGA |
-
2019
- 2019-05-07 CN CN201910374886.9A patent/CN110198177B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110085007A (en) * | 2010-01-18 | 2011-07-27 | 포항공과대학교 산학협력단 | Method of generating frequency hopping sequence by interleaving, frequency hopping sequence generator, apparatus for code division multiple access, and record medium for controlling method of the clock speed and the performing time of clock signal generator to make frequency hopping sequence |
| CN101964694A (en) * | 2010-09-27 | 2011-02-02 | 北京航空航天大学 | System and method for transmitting low interception signal of high-throughput and delay sensibility wireless network |
| CN104393891A (en) * | 2014-11-27 | 2015-03-04 | 电子科技大学 | Communication method for driving frequency spreading/frequency hopping of direct sequence by adopting information |
| 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 |
| CN106788882A (en) * | 2016-11-16 | 2017-05-31 | 西安电子科技大学 | The incoherent multi-user test method and device of nonopiate multi-pulse modulation |
| CN109194365A (en) * | 2018-09-25 | 2019-01-11 | 中国人民解放军陆军工程大学 | A kind of two-dimensional pattern modulation frequency-hopping communication method |
| CN109586764A (en) * | 2018-11-21 | 2019-04-05 | 哈尔滨工业大学 | A kind of self adaptive frequency-hopping system and adaptive frequency hopping method based on FPGA |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211808A (en) * | 2019-12-31 | 2020-05-29 | 四川大学 | Signal processing method and device under resource limitation and terminal equipment |
| CN111404579A (en) * | 2020-02-17 | 2020-07-10 | 济南浪潮高新科技投资发展有限公司 | Multi-sequence frequency hopping communication method, transmitter and receiver |
| CN113708797A (en) * | 2021-08-10 | 2021-11-26 | 中国科学院计算技术研究所 | Frequency hopping synchronization method and device for 5G NR |
| CN114024569A (en) * | 2021-11-03 | 2022-02-08 | 中国人民解放军63921部队 | Dual sequence frequency hopping communication system and method for integrating space flight measurement and control and data transmission |
| CN114024569B (en) * | 2021-11-03 | 2023-04-07 | 中国人民解放军63921部队 | Dual sequence frequency hopping communication system and method for integrating space flight measurement and control and data transmission |
| CN114337731A (en) * | 2021-11-30 | 2022-04-12 | 中国科学院半导体研究所 | Optical frequency hopping communication system and method |
| CN115549725A (en) * | 2022-10-10 | 2022-12-30 | 瑞兴恒方网络（深圳）有限公司 | Narrow-band frequency hopping multi-access communication algorithm and ARM implementation |
| CN115549725B (en) * | 2022-10-10 | 2023-07-18 | 瑞兴恒方网络（深圳）有限公司 | Communication algorithm for narrowband frequency hopping multi-channel access and ARM implementation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110198177B (en) | 2021-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110198177A (en) | A kind of multi-sequence joint frequency-hopping communication method of combination pseudorandom feature code | |
| Sozer et al. | Direct sequence spread spectrum based modem for under water acoustic communication and channel measurements | |
| CN109194365B (en) | Two-dimensional pattern modulation frequency hopping communication method | |
| Jonqyin et al. | Performance of MDPSK, MPSK, and noncoherent MFSK in wireless Rician fading channels | |
| CN104393893B (en) | A kind of frequency-hopping communication system based on cognitive radio | |
| Xu et al. | Ultra-wideband technology: Yesterday, today, and tomorrow | |
| CN109818648B (en) | Multi-sequence frequency hopping anti-interference communication method based on pseudorandom linear frequency modulation | |
| CN101040455B (en) | Method and modulator for modulating sequence of bits in wireless communications network | |
| CN207926567U (en) | Frequency hopping transmitter, frequency-hopping receiver and DFH communication system | |
| Chandra et al. | Optimizing information efficiency in a direct-sequence mobile packet radio network | |
| Erseghe | Capacity of UWB impulse radio with single-user reception in Gaussian noise and dense multipath | |
| Kalita et al. | An anti-jamming underwater communication transceiver model using uncoordinated direct sequence spread spectrum technique | |
| Ying et al. | Block-coded modulation and noncoherent detection for impulse radio UWB | |
| CN108092736B (en) | Low detection probability waveform method based on wavelet transformation | |
| Buehrer et al. | Range extension for UWB communications | |
| Krenz et al. | Hybrid DS/FH spread spectrum data transmission system for telemetry | |
| KR101040810B1 (en) | Ultra-wideband transreceiver for wireless body area network | |
| Li et al. | Performance of ultra-wideband transmission with pulse position amplitude modulation and rake reception | |
| Sheen et al. | Multiple-dwell and sequential code acquisition with diversity for FFH/MFSK spread-spectrum systems under band multitone jamming | |
| Li et al. | Performance and capacity of ultra-wideband transmission with biorthogonal pulse position modulation over multipath fading channels | |
| Xiang et al. | On the Use of FFH-MFSK for Ultra-Low Power Communications in a Jamming Environment | |
| Mitchell et al. | Orthogonalized and coded modulation for combined pulse position and pulse shape modulation | |
| Hassan et al. | On a follower tone-jammer countermeasure technique | |
| CN101431496A (en) | Modulation-demodulation method for fraction Fourier transform domain with unequal power spectral density | |
| Wang et al. | Anti-follower jamming analysis of multi-sequence frequency hopping in AWGN channel |
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 |