CN102263759B - Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network - Google Patents

Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network Download PDF

Info

Publication number
CN102263759B
CN102263759B CN 201110250376 CN201110250376A CN102263759B CN 102263759 B CN102263759 B CN 102263759B CN 201110250376 CN201110250376 CN 201110250376 CN 201110250376 A CN201110250376 A CN 201110250376A CN 102263759 B CN102263759 B CN 102263759B
Authority
CN
China
Prior art keywords
time domain
frequency network
bit interleave
mobile signals
coding modulation
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.)
Expired - Fee Related
Application number
CN 201110250376
Other languages
Chinese (zh)
Other versions
CN102263759A (en
Inventor
郑紫微
徐铁峰
聂秋华
何加铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangde Ruila Fresh Fruit Wine Co., Ltd.
Original Assignee
Ningbo University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo University filed Critical Ningbo University
Priority to CN 201110250376 priority Critical patent/CN102263759B/en
Publication of CN102263759A publication Critical patent/CN102263759A/en
Application granted granted Critical
Publication of CN102263759B publication Critical patent/CN102263759B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses a method for transmitting anti-interference mobile signals of a digital broadcast single-frequency network, and relates to a time domain/frequency domain/air space mixed transmission scheme. The method for transmitting anti-interference mobile signals of the digital broadcast single-frequency network has the advantages of low peak-to-average power ratio, short synchronization time, resistance to interference, controllable multiple services and the like.

Description

A kind of method for transmitting anti-interference mobile signals of digital broadcast single-frequency network
Technical field
The invention belongs to moving communicating field, relate more specifically to a kind of method for transmitting anti-interference mobile signals of digital broadcast single-frequency network.
Background technology
The higher peak-to-average power ratio (PAPR) of OFDM (OFDM) signal has very high requirement to the range of linearity of amplifier and digital to analog converter, if the system linearity scope can not satisfy the variation of signal, then can cause signal distortion, signal spectrum is changed, cause the orthogonality between the subchannel to be destroyed, produce the phase mutual interference, make system performance degradation, the solution that must consider how to reduce the probability of occurrence of large peak power signal in the ofdm signal and reduce the nonlinear distortion impact.BICM technology (Bit Interleave coded modulation, Bit Interleaved Coded Modulation, BICM) adopt bit interleaver and so that coding and modulated process are relatively independent, diversity order is improved significantly, so that communication system has good bit error performance under multidiameter fading channel.The networking model of employing single frequency network can improve the availability of frequency spectrum of Digital Television digital broadcasting mobile transmission system greatly.In actual single frequency network communication environment, Digital Television digital broadcasting performance of mobile communication system is subject to the impact of the factors such as lock in time, clock jitter, channel fading, channel disturbance.Anti-interference mobile signals of digital broadcast single-frequency network transmitter transmission method is the key technology that realizes reliable digit Television Digital broadcast single frequency network Mobile Transmission.
Utilizing Digital Television digital broadcast single-frequency network mobile transmission system to provide free television broadcasting, paid television broadcasting, Secret Information Transmission, multimedia value-added service etc. can control multi-service is the embodiment that new-generation digital Television Digital broadcasting mobile transmission system satisfies social needs.
Just be based on above background, the present invention is directed to the practical communication environment and propose a kind of method for transmitting anti-interference mobile signals of digital broadcast single-frequency network, can satisfy the needs that High Data Rate can be controlled multi-service Digital Television digital broadcast single-frequency network Mobile Transmission.
Wish is done more deep understanding to the patent background can be with reference to following documents and materials:
R.V.Nee，R.Prasad.“OFDM?for?wireless?multimedia?communications”.Boston：Artech?House，2000.
Y.Wu，S.Hirakawa，U.H.Reimers，and?J.Whitaker.“Overview?of?digital?television?development，”Proceedings?of?the?IEEE，Special?Issue?on?Global?Digital?Television：Technology?and?Emerging?Services，pp.8-21，Jan.2006.
U.Ladebusch?and?C.A.Liss.“Terrestrial?DVB(DVB-T)：A?broadcast?technology?for?stationary?portable?and?mobile?use，”Proceedings?of?the?IEEE，Special?Issue?on?Global?Digital?Television：Technology?and?Emerging?Services，pp.183-194，Jan.2006.
M.Takada?and?M.Saito.“Transmission?systems?for?ISDB-T，”Proceedings?of?the?IEEE，Special?Issue?on?Global?Digital?Television：Technology?and?Emerging?Services，pp.251-256，Jan.2006.
G.Caire，G.Taricco，E.Biglieri，“Bit-interleaved?coded?modulation，”IEEE?Trans.Information?Theory，vol.44，no.3，pp.927-946，May?1998.
Summary of the invention
The present invention is directed to High Data Rate and can control multi-service Digital Television digital broadcast single-frequency network Mobile Transmission problem, proposed a kind of method for transmitting anti-interference mobile signals of digital broadcast single-frequency network.
A kind of method for transmitting anti-interference mobile signals of digital broadcast single-frequency network that the present invention proposes is characterized in that it comprises the following steps:
1) the centre data manager of single frequency network converts the multi-medium data media data processor of flowing through to bit stream, and the scrambler sequence of utilizing feedback shift register to produce is carried out scrambling and processed to form the input data bit flow;
2) the network data management device of single frequency network will be inputted the data bit multi code Rate of Chinese character of flowing through and delete remaining convolutional encoding, Bit Interleave, code element modulation and be rotated in code element and form FFT Bit Interleave coding modulation data piece on the frequency domain, FFT represents the fast discrete Fourier conversion, and the length of FFT Bit Interleave coding modulation data piece is K;
3) to adopt code check be that 1 space-frequency coding device will be modulated at the FFT Bit Interleave coding modulation data piece that frequency domain forms each digital broadcasting anti-interference mobile signals transmitter branches in the single frequency network and form and emptyly frequently modulate FFT Bit Interleave coding modulation data piece to the network data management device of single frequency network, and the time synchronized of adjusting each digital broadcasting anti-interference mobile signals transmitter branches is all frequently modulated FFT Bit Interleave coding modulation data piece to sky at one time and processed to guarantee all transmitters in the network;
4) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network adopts IFFT that sky is modulated FFT Bit Interleave coding modulation data piece frequently and is transformed to the empty time domain discrete Bit Interleave coding modulation data sample value piece D that frequently modulates Total, IFFT represents the fast discrete Fourier inverse transformation;
5) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is frequently modulated sky in order time domain discrete Bit Interleave coding modulation data sample value piece and is divided equally into two, the empty time domain discrete Bit Interleave coding modulation data sample value sub-block D that frequently modulates 1Frequently modulate time domain discrete Bit Interleave coding modulation data sample value sub-block D with sky 2, D Total=[D 1, D 2];
6) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is modulated time domain discrete Bit Interleave coding modulation data sample value sub-block D by the peak-to-average power ratio adjustment unit frequently to sky 1, the empty time domain discrete Bit Interleave coding modulation data sample value sub-block D that frequently modulates 2Carry out that signal adds, subtracts, conjugate operation is processed and the synthetic new empty time domain discrete Bit Interleave coding modulation data sample value piece D that frequently modulates again New, the new empty time domain discrete Bit Interleave coding modulation data sample value piece D that frequently modulates NewAdopt following generate pattern to obtain, generate pattern 1 is D New=[D 1, D 2], generate pattern 2 is D new = [ D 1 , 1 / 2 ( D 1 + D 2 ) ] , Generate pattern 3 is D new = [ D 1 , 1 / 2 ( D 1 - D 2 ) ] , Generate pattern 4 is D new = [ 1 / 2 ( D 1 + D 2 ) , D 2 ] , Generate pattern 5 is D new = [ 1 / 2 ( D 1 - D 2 ) , D 2 ] , Generate pattern 6 is D new = [ 1 / 2 ( D 1 + D 2 ) , 1 / 2 ( D 1 - D 2 ) ] , Generate pattern 7 is D New=[D * 1, D 2], generate pattern 8 is D new = [ D * 1 , 1 / 2 ( D * 1 + D 2 ) ] , Generate pattern 9 is D new = [ D * 1 , 1 / 2 ( D * 1 - D 2 ) ] , Generate pattern 10 is D new = [ 1 / 2 ( D * 1 + D 2 ) , D 2 ] , Generate pattern 11 is D new = [ 1 / 2 ( D * 1 - D 2 ) , D 2 ] , Generate pattern 12 is D new = [ 1 / 2 ( D * 1 + D 2 ) , 1 / 2 ( D * 1 - D 2 ) ] , Relatively 12 kinds of synthetic empty frequencies of generate pattern are modulated time domain discrete Bit Interleave coding modulation data sample value piece D New, choose the empty frequency of peak-to-average power ratio that falls that wherein has minimum peak-to-average power ratio and modulate time domain discrete Bit Interleave coding modulation data sample value piece
Figure BSA000005641148000211
And the empty time domain discrete Bit Interleave coding modulation data sample value piece of frequently modulating of peak-to-average power ratio will fall
Figure BSA000005641148000212
The corresponding generate pattern information that adopts send to operational indicator sequence setting unit, wherein, D * 1Expression is modulated time domain discrete Bit Interleave coding modulation data sample value sub-block D frequently to sky 1Each empty modulate that time domain discrete Bit Interleave coding modulation data sample value carries out that conjugate operation is processed frequently and the empty time domain discrete Bit Interleave coding modulation data sample value sub-block of frequently modulating that obtains;
7) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network inserts Cyclic Prefix and falls the empty time domain discrete Bit Interleave coding modulation data sample value piece of frequently modulating of peak-to-average power ratio as the protection interval, the empty time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece of frequently modulating of peak-to-average power ratio falls in formation, as frame, the length of Cyclic Prefix is C, and falling the empty length of modulating time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece frequently of peak-to-average power ratio is C+K;
8) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network with training sequence as the real part sequence of sequence of plural training, operational indicator sequence that operational indicator sequence setting unit is the set imaginary part sequence as sequence of plural training, consist of the discrete sample block of sequence of plural training in time domain, the length of the discrete sample block of training sequence, operational indicator sequence, sequence of plural training all is X, and the operational indicator sequence is comprising and unique each system parameters and business model information of expressing digital broadcasting anti-interference mobile signals transmitter;
9) discrete sample block of the sequence of plural training that will consist of in time domain of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network repeats continuously 2 times and forms time domain repetition training series of discrete sample value piece on time domain, as frame head;
10) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is that frame head is inserted into and falls peak-to-average power ratio empty frequently to modulate time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece be frame with time domain repetition training series of discrete sample value piece, to form signal frame;
11) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network adopts square root raised cosine filter that the signal pulse of signal frame is shaped;
12) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network forms emission of radio frequency signals to the on-air radio channel with the baseband signal up-conversion to carrier wave;
13) the digital broadcasting anti-interference mobile signals receiver in the single frequency network detect to receive radiofrequency signal that each digital broadcasting anti-interference mobile signals transmitter in the single frequency network sends and its down-conversion is formed baseband signal, utilizes the Cyclic Prefix characteristic of signal frame and the architectural characteristic of signal frame to carry out the baseband signal reception ﹠ disposal.
Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network according to above-mentioned is characterized in that: each digital broadcasting anti-interference mobile signals transmitter in the single frequency network fall that peak-to-average power ratio is empty modulates that time domain discrete Bit Interleave coding modulation data sample value piece modulates frequently by sky that the signal that time domain discrete Bit Interleave coding modulation data sample value sub-block undertaken by specific 12 kinds of generate patterns adds, subtracts, conjugate operation is processed frequently and again synthetic; Has periodic time domain repetition training series of discrete sample value piece in the signal frame of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network; The length X of the training sequence of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is in 512,1024,2048, corresponding empty length K of modulating FFT Bit Interleave coding modulation data piece frequently is respectively 2048,4096,8192, the frequency interval of corresponding subcarrier is respectively 4KHz, 2KHz, 1KHz, and corresponding circulating prefix-length C is respectively empty 1/4,1/8,1/16 of the FFT Bit Interleave coding modulation data block length K size of frequently modulating; The training sequence of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network, operational indicator sequence form by a series of 1 or-1, have pseudo-random characteristics; Training sequence, the operational indicator sequence of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network have orthogonality each other; Each different operational indicator sequence of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is comprising and unique each system parameters and business model information of expressing each digital broadcasting anti-interference mobile signals transmitter in the single frequency network; The code check of space-frequency coding device is 1; The input data are carried out multi code Rate of Chinese character, and to delete the encoding rate of remaining convolutional encoding be in 1/4,1/2,5/8,3/4 and 7/8 one; Bit Interleave adopts the random interleaving mode, and code element is modulated to a kind of among QPSK, 16QAM, 64QAM and the 256QAM, and symbol constellations figure mapping mode adopts the Gray code mapping; The code element rotation realizes by symbol constellations figure is rotated to an angle, the symbol constellations figure anglec of rotation of QPSK is 22.5 degree, the symbol constellations figure anglec of rotation of 16QAM is 11.25 degree, the symbol constellations figure anglec of rotation of 64QAM is 5.626 degree, and the symbol constellations figure anglec of rotation of 256QAM is 2.8125 degree.Digital broadcasting anti-interference mobile signals receiver in the single frequency network can take full advantage of the Cyclic Prefix characteristic of signal frame and the architectural characteristic of signal frame is carried out the baseband signal reception ﹠ disposal, processes comprising the time domain and frequency domain combined alternate analysis to signal frame head and signal frame body.
Characteristics of the present invention:
The present invention is the transmission plan that mix in a kind of time-domain and frequency-domain spatial domain.The empty generate pattern of modulating time domain discrete Bit Interleave coding modulation data sample value piece frequently of peak-to-average power ratio of falling of the present invention is modulated time domain discrete Bit Interleave coding modulation data sample value piece choosing method with the empty frequency of peak-to-average power ratio that falls with minimum peak-to-average power ratio, but the very high large peak power signal probability of the maximum peak power that not only can take full advantage of ofdm signal is very low, the real part of the ofdm signal when number of sub carrier wave is larger (or imaginary part) is the characteristic of multiple Gaussian random process and whose amplitude obeys Rayleigh distribution, the amount of information of the required extra transmission of generate pattern of adopting is little, be easy to process the primary signal of recovering to obtain ofdm signal at receiver end, the orthogonal property that can not destroy sub-carrier signal simultaneously can not produce extra nonlinear distortion yet.Has periodic time domain repetition training series of discrete sample value piece in the signal frame of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network, the training sequence of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network, the operational indicator sequence has pseudo-random characteristics, the training sequence of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network, the operational indicator sequence has orthogonality each other, the signal frame of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is that frame head is inserted into that to fall the empty time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece of frequently modulating of peak-to-average power ratio be frame and forming by time domain repetition training series of discrete sample value piece, and these have guaranteed that digital broadcasting anti-interference mobile signals receiver can realize fast and accurately frame synchronization, Frequency Synchronization, time synchronized, channel transfer characteristic is estimated, and phase noise and channel transfer characteristic reliably followed the tracks of.Cyclic Prefix is fallen the empty time domain discrete Bit Interleave coding modulation data sample value piece of frequently modulating of peak-to-average power ratio to form signal frame body as the insertion of protection interval, can reduce the interference effect between signal frame head and the frame Bit Interleave coding modulation data.Adopt BICM that the input data are carried out the Bit Interleave coded modulation and improved diversity order, so that communication system has good bit error performance under multidiameter fading channel.The code element modulation is rotated the diversity that the mobile digital broadcast signal is provided with code element.Each different operational indicator sequence of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is comprising and unique each system parameters and business model information of expressing each digital broadcasting anti-interference mobile signals transmitter in the single frequency network, can so that Digital Television digital broadcast single-frequency network mobile transmission system can provide free television broadcasting, paid television broadcasting, Secret Information Transmission, multimedia value-added service etc. can control multi-service, satisfy social needs.Transmission method of the present invention has the equal power ratio of ebb, lock in time is short, clock jitter is little, anti-channel fading, anti-channel disturbance, can provide High Data Rate can control the plurality of advantages such as multi-service Digital Television digital broadcast single-frequency network Mobile Transmission.
Description of drawings
Fig. 1 is the embodiment schematic diagram according to signal transmission between the transmitter and receiver of method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of the present invention.
Fig. 2 is the embodiment schematic diagram that forms according to signal frame in the signals transmission between the transmitter and receiver of method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of the present invention.
Embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are described in detail.
The embodiment of signal transmission (supposing has N transmitter in the single frequency network) between the transmitter and receiver of the method for transmitting anti-interference mobile signals of digital broadcast single-frequency network that proposes according to the present invention as shown in Figure 1, follows these steps to carry out:
1) the centre data manager of single frequency network converts the multi-medium data media data processor of flowing through to bit stream, and the scrambler sequence of utilizing feedback shift register to produce is carried out scrambling and processed to form the input data bit flow;
2) the network data management device of single frequency network will be inputted the data bit multi code Rate of Chinese character of flowing through and delete remaining convolutional encoding, Bit Interleave, code element modulation and be rotated in code element and form FFT Bit Interleave coding modulation data piece on the frequency domain, FFT represents the fast discrete Fourier conversion, and the length of FFT Bit Interleave coding modulation data piece is K; The encoding rate that multi code Rate of Chinese character is deleted remaining convolutional encoding is in 1/4,1/2,5/8,3/4 and 7/8, Bit Interleave adopts the random interleaving mode, code element is modulated to a kind of among QPSK, 16QAM, 64QAM and the 256QAM, and symbol constellations figure mapping mode adopts the Gray code mapping; The code element rotation realizes by symbol constellations figure is rotated to an angle, the symbol constellations figure anglec of rotation of QPSK is 22.5 degree, the symbol constellations figure anglec of rotation of 16QAM is 11.25 degree, the symbol constellations figure anglec of rotation of 64QAM is 5.626 degree, and the symbol constellations figure anglec of rotation of 256QAM is 2.8125 degree;
3) to adopt code check be that 1 space-frequency coding device will be modulated at the FFT Bit Interleave coding modulation data piece that frequency domain forms each digital broadcasting anti-interference mobile signals transmitter branches in the single frequency network and form and emptyly frequently modulate FFT Bit Interleave coding modulation data piece to the network data management device of single frequency network, and the time synchronized of adjusting each digital broadcasting anti-interference mobile signals transmitter branches is all frequently modulated FFT Bit Interleave coding modulation data piece to sky at one time and processed to guarantee all transmitters in the network;
4) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network adopts IFFT that sky is modulated FFT Bit Interleave coding modulation data piece frequently and is transformed to the empty time domain discrete Bit Interleave coding modulation data sample value piece D that frequently modulates Total, IFFT represents the fast discrete Fourier inverse transformation;
5) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is frequently modulated sky in order time domain discrete Bit Interleave coding modulation data sample value piece and is divided equally into two, the empty time domain discrete Bit Interleave coding modulation data sample value sub-block D that frequently modulates 1Frequently modulate time domain discrete Bit Interleave coding modulation data sample value sub-block D with sky 2, D Total=[D 1, D 2];
6) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is modulated time domain discrete Bit Interleave coding modulation data sample value sub-block D by the peak-to-average power ratio adjustment unit frequently to sky 1, the empty time domain discrete Bit Interleave coding modulation data sample value sub-block D that frequently modulates 2Carry out that signal adds, subtracts, conjugate operation is processed and the synthetic new empty time domain discrete Bit Interleave coding modulation data sample value piece D that frequently modulates again New, the new empty time domain discrete Bit Interleave coding modulation data sample value piece D that frequently modulates NewAdopt following generate pattern to obtain, generate pattern 1 is D New=[D 1, D 2], generate pattern 2 is D new = [ D 1 , 1 / 2 ( D 1 + D 2 ) ] , Generate pattern 3 is D new = [ D 1 , 1 / 2 ( D 1 - D 2 ) ] , Generate pattern 4 is D new = [ 1 / 2 ( D 1 + D 2 ) , D 2 ] , Generate pattern 5 is D new = [ 1 / 2 ( D 1 - D 2 ) , D 2 ] , Generate pattern 6 is D new = [ 1 / 2 ( D 1 + D 2 ) , 1 / 2 ( D 1 - D 2 ) ] , Generate pattern 7 is D New=[D * 1, D 2], generate pattern 8 is D new = [ D * 1 , 1 / 2 ( D * 1 + D 2 ) ] , Generate pattern 9 is D new = [ D * 1 , 1 / 2 ( D * 1 - D 2 ) ] , Generate pattern 10 is D new = [ 1 / 2 ( D * 1 + D 2 ) , D 2 ] , Generate pattern 11 is D new = [ 1 / 2 ( D * 1 - D 2 ) , D 2 ] , Generate pattern 12 is D new = [ 1 / 2 ( D * 1 + D 2 ) , 1 / 2 ( D * 1 - D 2 ) ] , Relatively 12 kinds of synthetic empty frequencies of generate pattern are modulated time domain discrete Bit Interleave coding modulation data sample value piece D New, choose the empty frequency of peak-to-average power ratio that falls that wherein has minimum peak-to-average power ratio and modulate time domain discrete Bit Interleave coding modulation data sample value piece
Figure BSA000005641148000511
And the empty time domain discrete Bit Interleave coding modulation data sample value piece of frequently modulating of peak-to-average power ratio will fall
Figure BSA000005641148000512
The corresponding generate pattern information that adopts send to operational indicator sequence setting unit, wherein, D * 1Expression is modulated time domain discrete Bit Interleave coding modulation data sample value sub-block D frequently to sky 1Each empty modulate that time domain discrete Bit Interleave coding modulation data sample value carries out that conjugate operation is processed frequently and the empty time domain discrete Bit Interleave coding modulation data sample value sub-block of frequently modulating that obtains;
7) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network inserts Cyclic Prefix and falls the empty time domain discrete Bit Interleave coding modulation data sample value piece of frequently modulating of peak-to-average power ratio as the protection interval, the empty time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece of frequently modulating of peak-to-average power ratio falls in formation, as frame, the length of Cyclic Prefix is C, and falling the empty length of modulating time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece frequently of peak-to-average power ratio is C+K;
8) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network with training sequence as the real part sequence of sequence of plural training, operational indicator sequence that operational indicator sequence setting unit is the set imaginary part sequence as sequence of plural training, consist of the discrete sample block of sequence of plural training in time domain, the length of the discrete sample block of training sequence, operational indicator sequence, sequence of plural training all is X, and the operational indicator sequence is comprising and unique each system parameters and business model information of expressing digital broadcasting anti-interference mobile signals transmitter; X gets in 512,1024,2048; When X got 512, K got 2048, C and gets 1/4 of K size, and the empty frequency interval of modulating FFT Bit Interleave coding modulation data piece subcarrier is frequently got 4KHz; When X got 1024, K got 4096, C and gets 1/8 of K size, and the empty frequency interval of modulating FFT Bit Interleave coding modulation data piece subcarrier is frequently got 2KHz; When X got 2048, K got 8192, C and gets 1/16 of K size, and the empty frequency interval of modulating FFT Bit Interleave coding modulation data piece subcarrier is frequently got 1KHz;
9) discrete sample block of the sequence of plural training that will consist of in time domain of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network repeats continuously 2 times and forms time domain repetition training series of discrete sample value piece on time domain, as frame head;
10) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is that frame head is inserted into and falls peak-to-average power ratio empty frequently to modulate time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece be frame with time domain repetition training series of discrete sample value piece, to form signal frame;
11) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network adopts square root raised cosine filter that the signal pulse of signal frame is shaped;
12) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network forms emission of radio frequency signals to the on-air radio channel with the baseband signal up-conversion to carrier wave;
13) the digital broadcasting anti-interference mobile signals receiver in the single frequency network detect to receive radiofrequency signal that each digital broadcasting anti-interference mobile signals transmitter in the single frequency network sends and its down-conversion is formed baseband signal, utilizes the Cyclic Prefix characteristic of signal frame and the architectural characteristic of signal frame to carry out the baseband signal reception ﹠ disposal.
According to the embodiment of signal frame formation (supposing has N transmitter in the single frequency network) in the signals transmission between the transmitter and receiver of method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of the present invention, as shown in Figure 2, implementation is as follows:
The centre data manager of single frequency network converts the multi-medium data media data processor of flowing through to bit stream, and the scrambler sequence of utilizing feedback shift register to produce is carried out scrambling and processed to form the input data bit flow.
The network data management device of single frequency network will be inputted the data bit multi code Rate of Chinese character of flowing through and delete remaining convolutional encoding, Bit Interleave, code element modulation and be rotated in code element and form FFT Bit Interleave coding modulation data piece on the frequency domain; The encoding rate that multi code Rate of Chinese character is deleted remaining convolutional encoding is in 1/4,1/2,5/8,3/4 and 7/8, Bit Interleave adopts the random interleaving mode, code element is modulated to a kind of among QPSK, 16QAM, 64QAM and the 256QAM, and symbol constellations figure mapping mode adopts the Gray code mapping; The code element rotation realizes by symbol constellations figure is rotated to an angle, the symbol constellations figure anglec of rotation of QPSK is 22.5 degree, the symbol constellations figure anglec of rotation of 16QAM is 11.25 degree, the symbol constellations figure anglec of rotation of 64QAM is 5.626 degree, and the symbol constellations figure anglec of rotation of 256QAM is 2.8125 degree; Adopting code check is that 1 space-frequency coding device will be modulated at the FFT Bit Interleave coding modulation data piece that frequency domain forms each digital broadcasting anti-interference mobile signals transmitter branches in the single frequency network and form and emptyly frequently modulate FFT Bit Interleave coding modulation data piece, and the time synchronized of adjusting each digital broadcasting anti-interference mobile signals transmitter branches is all frequently modulated FFT Bit Interleave coding modulation data piece to sky at one time and processed to guarantee all transmitters in the network; Through IFFT it is transformed to the empty time domain discrete Bit Interleave coding modulation data sample value piece of frequently modulating again, generates and choose the empty time domain discrete Bit Interleave coding modulation data sample value piece of frequently modulating of peak-to-average power ratio that falls that wherein has minimum peak-to-average power ratio by the peak-to-average power ratio adjustment unit and simultaneously the generate pattern information of the corresponding employing of institute is sent to operational indicator sequence setting unit.
Each digital broadcasting anti-interference mobile signals transmitter in the single frequency network inserts Cyclic Prefix and falls peak-to-average power ratio time domain discrete Bit Interleave coding modulation data sample value piece as the protection interval; peak-to-average power ratio time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece falls in formation; as frame, the length of Cyclic Prefix is C.Each digital broadcasting anti-interference mobile signals transmitter in the single frequency network with training sequence as the real part sequence of sequence of plural training, operational indicator sequence that operational indicator sequence setting unit is the set imaginary part sequence as sequence of plural training, consist of the discrete sample block of sequence of plural training in time domain, the length of the discrete sample block of training sequence, operational indicator sequence, sequence of plural training all is X, and the operational indicator sequence is comprising and unique each system parameters and business model information of expressing digital broadcasting anti-interference mobile signals transmitter.The discrete sample block of the sequence of plural training that each digital broadcasting anti-interference mobile signals transmitter in the single frequency network will consist of in time domain repeats continuously 2 times and forms time domain repetition training series of discrete sample value piece on time domain, as frame head.Each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is that frame head is inserted into that to fall peak-to-average power ratio time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece be frame with time domain repetition training series of discrete sample value piece, to form signal frame.Each digital broadcasting anti-interference mobile signals transmitter in the single frequency network adopts square root raised cosine filter that the signal pulse of signal frame is shaped.Each digital broadcasting anti-interference mobile signals transmitter in the single frequency network with the baseband signal up-conversion to carrier wave.
The X of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network gets in 512,1024,2048; When X got 512, K got 2048, C and gets 1/4 of K size, and the empty frequency interval of modulating FFT Bit Interleave coding modulation data piece subcarrier is frequently got 4KHz; When X got 1024, K got 4096, C and gets 1/8 of K size, and the empty frequency interval of modulating FFT Bit Interleave coding modulation data piece subcarrier is frequently got 2KHz; When X got 2048, K got 8192, C and gets 1/16 of K size, and the empty frequency interval of modulating FFT Bit Interleave coding modulation data piece subcarrier is frequently got 1KHz; Training sequence, operational indicator sequence as each digital broadcasting anti-interference mobile signals transmitter in the single frequency network form by a series of 1 or-1, have pseudo-random characteristics, and training sequence, operational indicator sequence have orthogonality each other; The training sequence that satisfies above-mentioned feature can be by realizing as one group of Phase shift m sequence of a kind of specific type of pseudo-random number sequence with as the walsh sequence of orthogonal sequence, Hadamard sequences or by the orthogonal sequence that other modes produce.Each different operational indicator sequence is comprising and unique each system parameters and business model information of expressing each digital broadcasting anti-interference mobile signals transmitter in the single frequency network.When X got 512, the corresponding signal to signal frame carried out the rolloff-factor of the square root raised cosine filter of pulse shaping and gets 0.1; When X got 1024, the corresponding signal to signal frame carried out the rolloff-factor of the square root raised cosine filter of pulse shaping and gets 0.05; When X got 2048, the corresponding signal to signal frame carried out the rolloff-factor of the square root raised cosine filter of pulse shaping and gets 0.025.
Each digital broadcasting anti-interference mobile signals transmitter in the single frequency network forms emission of radio frequency signals to the on-air radio channel with the baseband signal up-conversion to carrier wave.
Digital broadcasting anti-interference mobile signals receiver in the single frequency network detects and receives radiofrequency signal that each digital broadcast mobile signals transmitter in the single frequency network sends and its down-conversion is formed baseband signal, utilize the Cyclic Prefix characteristic of signal frame and the architectural characteristic of signal frame to carry out the baseband signal reception ﹠ disposal, process comprising the time domain and frequency domain combined alternate analysis to signal frame head and signal frame body.
The above has been described in detail specific embodiments of the invention by reference to the accompanying drawings, but the present invention is not limited to above-described embodiment, and in the spirit and scope situation of the claim that does not break away from the application, those skilled in the art can make various modifications or remodeling.

Claims (8)

1. a method for transmitting anti-interference mobile signals of digital broadcast single-frequency network is characterized in that it comprises the following steps:
1) the centre data manager of single frequency network converts the multi-medium data media data processor of flowing through to bit stream, and the scrambler sequence of utilizing feedback shift register to produce is carried out scrambling and processed to form the input data bit flow;
2) the network data management device of single frequency network will be inputted the data bit multi code Rate of Chinese character of flowing through and delete remaining convolutional encoding, Bit Interleave, code element modulation and be rotated in code element and form FFT Bit Interleave coding modulation data piece on the frequency domain, and the length of FFT Bit Interleave coding modulation data piece is K;
3) to adopt code check be that 1 space-frequency coding device will be modulated at the FFT Bit Interleave coding modulation data piece that frequency domain forms each digital broadcasting anti-interference mobile signals transmitter branches in the single frequency network and form and emptyly frequently modulate FFT Bit Interleave coding modulation data piece to the network data management device of single frequency network, and the time synchronized of adjusting each digital broadcasting anti-interference mobile signals transmitter branches is all frequently modulated FFT Bit Interleave coding modulation data piece to sky at one time and processed to guarantee all transmitters in the network;
4) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network adopts IFFT that sky is modulated FFT Bit Interleave coding modulation data piece frequently and is transformed to the empty time domain discrete Bit Interleave coding modulation data sample value piece D that frequently modulates Total
5) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is frequently modulated sky in order time domain discrete Bit Interleave coding modulation data sample value piece and is divided equally into two, the empty time domain discrete Bit Interleave coding modulation data sample value sub-block D that frequently modulates 1Frequently modulate time domain discrete Bit Interleave coding modulation data sample value sub-block D with sky 2, D Total=[D 1, D 2];
6) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is modulated time domain discrete Bit Interleave coding modulation data sample value sub-block D by the peak-to-average power ratio adjustment unit frequently to sky 1, the empty time domain discrete Bit Interleave coding modulation data sample value sub-block D that frequently modulates 2Carry out that signal adds, subtracts, conjugate operation is processed and the synthetic new empty time domain discrete Bit Interleave coding modulation data sample value piece D that frequently modulates again New, the new empty time domain discrete Bit Interleave coding modulation data sample value piece D that frequently modulates NewAdopt following generate pattern to obtain, generate pattern 1 is D New=[D 1, D 2], generate pattern 2 is D new = [ D 1 , 1 / 2 ( D 1 + D 2 ) ] , Generate pattern 3 is D new = [ D 1 , 1 / 2 ( D 1 - D 2 ) ] , Generate pattern 4 is D new = [ 1 / 2 ( D 1 + D 2 ) , D 2 ] , Generate pattern 5 is D new = [ 1 / 2 ( D 1 - D 2 ) , D 2 ] , Generate pattern 6 is D new = [ 1 / 2 ( D 1 + D 2 ) , 1 / 2 ( D 1 - D 2 ) ] , Generate pattern 7 is D New=[D * 1, D 2], generate pattern 8 is
Figure FSB00001088263000016
Generate pattern 9 is D new = [ D * 1 , 1 / 2 ( D * 1 - D 2 ) ] , Generate pattern 10 is D new = [ 1 / 2 ( D * 1 + D 2 ) , D 2 ] , Generate pattern 11 is
Figure FSB00001088263000019
Generate pattern 12 is D new = [ 1 / 2 ( D * 1 + D 2 ) , 1 / 2 ( D * 1 - D 2 ) ] , Relatively 12 kinds of synthetic empty frequencies of generate pattern are modulated time domain discrete Bit Interleave coding modulation data sample value piece D New, choose the empty frequency of peak-to-average power ratio that falls that wherein has minimum peak-to-average power ratio and modulate time domain discrete Bit Interleave coding modulation data sample value piece
Figure FSB000010882630000111
And the empty time domain discrete Bit Interleave coding modulation data sample value piece of frequently modulating of peak-to-average power ratio will fall
Figure FSB000010882630000112
The corresponding generate pattern information that adopts send to operational indicator sequence setting unit, wherein, D * 1Expression is modulated time domain discrete Bit Interleave coding modulation data sample value sub-block D frequently to sky 1Each empty modulate that time domain discrete Bit Interleave coding modulation data sample value carries out that conjugate operation is processed frequently and the empty time domain discrete Bit Interleave coding modulation data sample value sub-block of frequently modulating that obtains;
7) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network inserts Cyclic Prefix and falls the empty time domain discrete Bit Interleave coding modulation data sample value piece of frequently modulating of peak-to-average power ratio as the protection interval, the empty time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece of frequently modulating of peak-to-average power ratio falls in formation, as frame, the length of Cyclic Prefix is C, and falling the empty length of modulating time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece frequently of peak-to-average power ratio is C+K;
8) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network with training sequence as the real part sequence of sequence of plural training, operational indicator sequence that operational indicator sequence setting unit is the set imaginary part sequence as sequence of plural training, consist of the discrete sample block of sequence of plural training in time domain, the length of the discrete sample block of training sequence, operational indicator sequence, sequence of plural training all is X, and the operational indicator sequence is comprising and unique each system parameters and business model information of expressing digital broadcasting anti-interference mobile signals transmitter;
9) discrete sample block of the sequence of plural training that will consist of in time domain of each digital broadcasting anti-interference mobile signals transmitter in the single frequency network repeats continuously 2 times and forms time domain repetition training series of discrete sample value piece on time domain, as frame head;
10) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network is that frame head is inserted into and falls peak-to-average power ratio empty frequently to modulate time domain cyclic prefix discrete bits interweaving encoding modulating data sample value piece be frame with time domain repetition training series of discrete sample value piece, to form signal frame;
11) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network adopts square root raised cosine filter that the signal pulse of signal frame is shaped;
12) each digital broadcasting anti-interference mobile signals transmitter in the single frequency network forms emission of radio frequency signals to the on-air radio channel with the baseband signal up-conversion to carrier wave;
13) the digital broadcasting anti-interference mobile signals receiver in the single frequency network detect to receive radiofrequency signal that each digital broadcasting anti-interference mobile signals transmitter in the single frequency network sends and its down-conversion is formed baseband signal, utilizes the Cyclic Prefix characteristic of signal frame and the architectural characteristic of signal frame to carry out the baseband signal reception ﹠ disposal.
2. by the method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of claim 1, it is characterized in that: the length X of the discrete sample block of the training sequence of each digital broadcasting anti-interference mobile signals transmitter in the described single frequency network, operational indicator sequence, sequence of plural training is got in 512,1024,2048.
3. by the method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of claim 2, it is characterized in that: described training sequence, operational indicator sequence form by a series of 1 or-1, have pseudo-random characteristics.
4. by the method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of claim 2, it is characterized in that: described training sequence, operational indicator sequence have orthogonality each other.
5. press the method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of claim 1, it is characterized in that: describedly the input data are carried out multi code Rate of Chinese character delete multi code Rate of Chinese character that remaining convolutional encoding, Bit Interleave, code element modulation and code element rotation process to delete the encoding rate of remaining convolutional encoding be in 1/4,1/2,5/8,3/4 and 7/8 one, Bit Interleave adopts the random interleaving mode, code element is modulated to a kind of among QPSK, 16QAM, 64QAM and the 256QAM, and symbol constellations figure mapping mode adopts the Gray code mapping; The code element rotation realizes by symbol constellations figure is rotated to an angle, the symbol constellations figure anglec of rotation of QPSK is 22.5 degree, the symbol constellations figure anglec of rotation of 16QAM is 11.25 degree, the symbol constellations figure anglec of rotation of 64QAM is 5.626 degree, and the symbol constellations figure anglec of rotation of 256QAM is 2.8125 degree.
6. by the method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of claim 1, it is characterized in that: described empty frequency is modulated FFT Bit Interleave coding modulation data piece and is comprised of subcarrier; When X got 512, K got 2048, and the frequency interval of subcarrier is got 4KHz; When X got 1024, K got 4096, and the frequency interval of subcarrier is got 2KHz; When X got 2048, K got 8192, and the frequency interval of subcarrier is got 1KHz.
7. by the method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of claim 1, it is characterized in that: the length C value of described Cyclic Prefix is relevant with the X value; When X got 512, C got 1/4 of K size; When X got 1024, C got 1/8 of K size; When X got 2048, C got 1/16 of K size.
8. press the method for transmitting anti-interference mobile signals of digital broadcast single-frequency network of claim 1, it is characterized in that: the baseband signal reception ﹠ disposal that described anti-interference mobile signals of digital broadcast single-frequency network receiver carries out, one of them step are that the time domain and frequency domain combined alternate analysis of signal frame head and signal frame body is processed.
CN 201110250376 2011-08-22 2011-08-22 Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network Expired - Fee Related CN102263759B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110250376 CN102263759B (en) 2011-08-22 2011-08-22 Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110250376 CN102263759B (en) 2011-08-22 2011-08-22 Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network

Publications (2)

Publication Number Publication Date
CN102263759A CN102263759A (en) 2011-11-30
CN102263759B true CN102263759B (en) 2013-10-30

Family

ID=45010218

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110250376 Expired - Fee Related CN102263759B (en) 2011-08-22 2011-08-22 Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network

Country Status (1)

Country Link
CN (1) CN102263759B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2784030C1 (en) * 2022-06-21 2022-11-23 Федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет аэрокосмического приборостроения" Method for noise-proof transmission of discrete signals based on single-sideband modulation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103780565A (en) * 2014-01-13 2014-05-07 宁波大学 Single-frequency network anti-interference mobile digital broadcasting signal transmission method
CN103780533A (en) * 2014-01-13 2014-05-07 宁波大学 Digital broadcasting single frequency network anti-interference mobile signal transmission method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1087559A1 (en) * 1998-06-10 2001-03-28 Nippon Hoso Kyokai Canceller for jamming wave by interference
CN101370153A (en) * 2007-08-17 2009-02-18 上海东方明珠广播电视研究发展有限公司 Single-frequency network monitoring system of digital broadcasting television

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1087559A1 (en) * 1998-06-10 2001-03-28 Nippon Hoso Kyokai Canceller for jamming wave by interference
CN101370153A (en) * 2007-08-17 2009-02-18 上海东方明珠广播电视研究发展有限公司 Single-frequency network monitoring system of digital broadcasting television

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2784030C1 (en) * 2022-06-21 2022-11-23 Федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет аэрокосмического приборостроения" Method for noise-proof transmission of discrete signals based on single-sideband modulation

Also Published As

Publication number Publication date
CN102263759A (en) 2011-11-30

Similar Documents

Publication Publication Date Title
CN102263731B (en) Method for transmitting anti-fading wireless signals of digital broadcast single-frequency network
CN102238131B (en) Anti-interference radio signal framing modulation method for multimedia broadcast single-frequency network
CN102299890B (en) Multimedia broadcasting wireless signal anti-interference framing modulation method
CN102394852B (en) Single-frequency network anti-fading wireless multimedia broadcasting signal framing modulation method
CN102255698B (en) Anti-fading framing modulating method for multimedia broadcast radio signal
CN102281231B (en) Multimedia broadcast mobile signal anti-interference framing modulation method
CN102263759B (en) Method for transmitting anti-interference mobile signals of digital broadcast single-frequency network
CN102281244B (en) Anti-interference wireless digital broadcast signal transmission method for single frequency network
CN102263747B (en) Method for transmitting robust mobile digital broadcast signals in single frequency network
CN102263727B (en) Interference-resistance framing modulation method for mobile signals of multimedia broadcasting single frequency network
CN102255851A (en) Anti-fading wireless signal framing modulation method of multimedia broadcasting single frequency network
CN102281246B (en) Anti-fading method for transmitting wireless digital broadcast signal in single frequency network
CN102263762B (en) Noise-resistance mobile signal transmission method for digital broadcasting single frequency network
CN102263738B (en) Anti-interference transmission method for digital broadcast wireless signal
CN102263743B (en) Anti-interference mobile multimedia broadcast signal framing modulation method for single-frequency network
CN102263763B (en) Mobile signal transmission method for digital broadcast single-frequency network
CN102307172B (en) Framing and modulating method for robustness wireless multimedia broadcast signal with single frequency network
CN102263732B (en) Robust wireless signal transmission method for digital broadcasting single frequency network
CN102263736B (en) Anti-fading digital broadcast wireless signal transmitting method
CN102263733B (en) Anti-interference wireless signal transmission method for digital broadcast single-frequency network
CN102263748B (en) Anti-interference mobile digital broadcast signal transmission method for single-frequency network
CN102263758B (en) Method for transmitting robust mobile signals in digital broadcast single frequency network
CN102281245B (en) Single frequency network robustness wireless digital broadcast signal transmission method
CN102263749B (en) Anti-fading mobile digital broadcast signal transmission method for single-frequency network
CN102263754B (en) Anti-interference transmission method of mobile digital broadcast signals

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20171120

Address after: No. 28, Wu Lou village, Port Street, Gao Hong Kong, Taizhou, Jiangsu

Patentee after: Beijing Yong Bo Science and Technology Ltd.

Address before: 315211 Zhejiang Province, Ningbo Jiangbei District Fenghua Road No. 818

Patentee before: Ningbo University

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20181107

Address after: Room 310, 3rd floor, Kechuang Building, intersection of Dechang Road and Tongpu East Road, Guangde Economic Development Zone, Xuancheng City, Anhui Province

Patentee after: Guangde Ruila Fresh Fruit Wine Co., Ltd.

Address before: 225300 No. 28, Wu Lou village, Port Road, Gao Gang, Taizhou, Jiangsu

Patentee before: Beijing Yong Bo Science and Technology Ltd.

TR01 Transfer of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131030

Termination date: 20200822

CF01 Termination of patent right due to non-payment of annual fee