CN105227287B - data transmission synchronization method and device - Google Patents
data transmission synchronization method and device Download PDFInfo
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- CN105227287B CN105227287B CN201410271413.3A CN201410271413A CN105227287B CN 105227287 B CN105227287 B CN 105227287B CN 201410271413 A CN201410271413 A CN 201410271413A CN 105227287 B CN105227287 B CN 105227287B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
Abstract
The embodiment of the present invention provides a kind of data transmission synchronization method and device, this method comprises: the sequence information sent by receiver in the first reception to transmitter, the sequence information is to indicate that transmitter sends valid data in the finish time of sequence information, wherein, first moment was moment in the idle moment of transmitter or the first moment was the finish time of transmitter free time length, then, in the finish time of sequence information, receiver receives the valid data that transmitter is sent.To not need to determine clock source by GPS positioning clock during realizing sign synchronization, in turn, reduce the cost for realizing sign synchronization.
Description
Technical field
The present invention relates to the information processing technology more particularly to a kind of data transmission synchronization method and devices.
Background technique
In data communication process, the data that transmitter is sent are by due to the delay of transmission, causing to connect after transmission
Receipts machine can not be sampled at the optimum sampling moment and lead to intersymbol interference.
In the prior art, receiver needs to carry out sign synchronization during receiving data, for example, first according to reception
Data, determine clock source, that is, it is synchronous when the symbol received and dispatched, then, change phase deviation, i.e., determined and received according to the clock source
The optimum sampling moment of data.
However, the prior art is to determine clock source by GPS positioning clock, so as to cause the cost for realizing sign synchronization
It is higher.
Summary of the invention
The embodiment of the present invention provides a kind of data transmission synchronization method and device, to solve the cost of realization sign synchronization
Higher problem.
First aspect provides a kind of data transmission synchronization method, comprising:
The sequence information that receiver is sent in the first reception to transmitter, the sequence information is to indicate the hair
Machine is sent to send valid data in the finish time of the sequence information, first moment is in the idle moment of the transmitter
A moment or first moment be the transmitter free time length finish time；
In the finish time of the sequence information, the receiver receives the valid data that the transmitter is sent.
In the first possible implementation, the sequence letter that the receiver is sent in the first reception to transmitter
Breath, comprising:
The receiver receives the sequence information by single order loop filter.
It is in the second possible implementation, described to connect in conjunction with the first possible implementation of first aspect
Receipts machine is received by single order loop filter after the sequence information, further includes:
In the first predetermined time, alternatively, the error that the receiver is fed back according to digital controlled oscillator, the receiver is determined
The single order loop filter is switched to second-order loop filter, the single order loop filter is than the second order loop filtering
It is fast that device carries out phase convergence.
It can the side of being able to achieve in conjunction with any one of second of possible implementation of first aspect to first aspect
Formula, in the third possible implementation, the sequence information that the receiver is sent in the first reception to transmitter it
Before, further includes:
The receiver obtains phase deviation, and the phase deviation includes that the receiver is carved and the booting moment during shutdown
The deviation of phase.
It is in the fourth possible implementation, described to connect in conjunction with the third possible implementation of first aspect
Receipts machine obtains phase deviation, and the phase deviation includes that the receiver is carved and be switched on during shutdown the deviation of moment phase, wraps
It includes:
The receiver obtains clock jitter according to filter, and the clock jitter includes that the receiver is carved during shutdown
With the clock jitter at booting moment；
The receiver obtains the closing duration of itself, and the shut-in time includes extremely being switched at the receiver shutdown moment
The duration at moment；
The receiver obtains the clock frequency of itself；
The receiver determines the phase deviation according to the clock jitter, closing duration and clock frequency.
It can the side of being able to achieve in conjunction with any one of the 4th kind of possible implementation of first aspect to first aspect
Formula, in a fifth possible implementation, the sequence information, comprising: 0 and 1 alternate sequence of rules or pseudorandom sequence
Column.
The second aspect provides a kind of data transmission synchronization method, comprising:
Transmitter sends sequence information at the first moment, and the sequence information is to indicate transmitter in the sequence information
Finish time send valid data, first moment be the transmitter idle moment in a moment or described
First moment was the finish time of the transmitter idle moment；
The transmitter sends the valid data in the finish time for sending sequence information, to the receiver.
In the first possible implementation, the sequence information, comprising: 0 and 1 alternate sequence of rules, or it is pseudo-
Random sequence.
A kind of data transmission synchronization device is provided in terms of third, comprising: receiver, transmitter and processor, it is described
Receiver, the sequence information for sending in the first reception to transmitter, the sequence information is to indicate the transmission
Machine sends valid data in the finish time of the sequence information, and first moment is in the idle moment of the transmitter
One moment or first moment are the finish time of the transmitter free time length；For the knot in the sequence information
The beam moment receives the valid data that the transmitter is sent.
In the first possible implementation, the receiver is specifically used for receiving institute by single order loop filter
State sequence information.
In conjunction with the first possible implementation in terms of third, in the second possible implementation, the place
Device is managed, is used in the first predetermined time, alternatively, the error that the receiver is fed back according to digital controlled oscillator, determines described one
Rank loop filter is switched to second-order loop filter, and the single order loop filter carries out phase than the second order loop filter
Position convergence is fast.
It can the side of being able to achieve in conjunction with any one of second of possible implementation of third aspect to first aspect
Formula, in the third possible implementation, the receiver are also used to obtain phase deviation, and the phase deviation includes institute
Receiver is stated to carve and be switched on during shutdown the deviation of moment phase.
It is in the fourth possible implementation, described to connect in conjunction with the third possible implementation in terms of third
Device is received, is specifically used for obtaining clock jitter according to filter, the clock jitter includes that the receiver is carved and opened during shutdown
The clock jitter at machine moment；The closing duration of itself is obtained, the shut-in time includes extremely being switched at the receiver shutdown moment
The duration at moment；Obtain the clock frequency of itself；
The processor is also used to according to the clock jitter, closes duration and clock frequency, determines that the phase is inclined
Difference.
It can the side of being able to achieve in conjunction with any one of the 4th kind of possible implementation of third aspect to first aspect
Formula, in a fifth possible implementation, the sequence information, comprising: 0 and 1 alternate sequence of rules or pseudorandom sequence
Column.
4th aspect provides a kind of data transmission synchronization device, comprising: receiver, transmitter and processor, it is described
Transmitter, for sending sequence information at the first moment, the sequence information is to indicate transmitter in the sequence information
Finish time sends valid data, and first moment is a moment or described the in the idle moment of the transmitter
One moment was the finish time of the transmitter idle moment；For the finish time in transmission sequence information, to the reception
Machine sends the valid data.
In the first possible implementation, the sequence information, comprising: 0 and 1 alternate sequence of rules, or it is pseudo-
Random sequence.
Data transmission synchronization method and device provided in an embodiment of the present invention, by receiver in the first reception to hair
Send machine send sequence information, the sequence information to indicate transmitter sequence information finish time send valid data,
Wherein, the first moment was moment in the idle moment of transmitter or the first moment was the end of transmitter free time length
At the moment, then, in the finish time of sequence information, receiver receives the valid data that transmitter is sent.To realize symbol
It does not need to determine clock source by GPS positioning clock in synchronous process, in turn, reduces the cost for realizing sign synchronization.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow diagram for the data transmission synchronization method that one embodiment of the invention provides；
Fig. 2 be another embodiment of the present invention provides data transmission synchronization method flow diagram；
Fig. 3 is the flow diagram for the data transmission synchronization method that yet another embodiment of the invention provides；
Fig. 4 is the operation schematic diagram for two transceiver data transmission synchronizations that one embodiment of the invention provides；
Fig. 5 is the structural schematic diagram for the data transmission synchronization device that one embodiment of the invention provides；
Fig. 6 be another embodiment of the present invention provides data transmission synchronization device structural schematic diagram.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is the flow diagram for the data transmission synchronization method that one embodiment of the invention provides, as shown in Figure 1, this reality
Apply the data transmission synchronization method of example, comprising:
The sequence information that step 101, receiver are sent in the first reception to transmitter.
The applicable scene of the present embodiment are as follows: the first is applicable in scene, under FDD system, when establishing sign synchronization；Alternatively, the
Two applicable scenes, in a tdd system, when receiving end will be switched to sending mode.Need it is noted that no matter above-mentioned which kind of
It is applicable in scene, the present embodiment is under the scene for opening receiver symbol synchronization module.
In the present embodiment, the sequence information is to indicate that transmitter sends significant figure in the finish time of sequence information
According to, wherein the first moment be moment in the idle moment of transmitter or the first moment was the knot of transmitter free time length
The beam moment.
It should be noted that receiver can receive sequence information by single order loop filter, wherein the sequence information
The longer convergence to phase of length it is better, meanwhile, the length of the sequence information, which is no longer than, protects time slot (Guard
Period, referred to as GP), if influencing the transmission of valid data more than GP.
For receiver the sequence information that the first reception to transmitter is sent at least may include following two reality
Existing mode:
The first implementation, phase of the sequence information between cancellation receiver and transmitter in the present embodiment are inclined
Difference, in order to accelerate phase convergence, i.e., reduction phase deviation, receiver receive sequence information when using single order loop filter into
Row phase convergence, in the first predetermined time, receiver, which is determined, is switched to second-order loop filter for single order loop filter,
In, single order loop filter is faster than second order loop filter progress phase convergence.
Second of implementation carries out phase convergence using single order loop filter when receiver receives sequence information,
The error that receiver is fed back according to digital controlled oscillator, that is, when error is less than preset value, receiver is determined single order loop filtering
Device is switched to second-order loop filter, wherein single order loop filter is faster than second order loop filter progress phase convergence.
In the present embodiment, the side of phase convergence is carried out using above-mentioned single order loop filter and second order loop filter
Formula ensure that the stability of phase convergence.
Step 102, the finish time in sequence information, receiver receive the valid data that transmitter is sent.
In the present embodiment, which may include: 0 and 1 alternate sequence of rules or pseudo-random sequence.
Specifically, receiver after receiving sequence information, determines that, in the finish time of sequence information, transmitter will be sent out
Valid data are sent, thus, in the finish time of sequence information, receiver receives the valid data that transmitter is sent.
In the present embodiment, the sequence information that receiver is sent in the first reception to transmitter, the sequence information are used
To indicate that transmitter sends valid data in the finish time of sequence information, wherein the first moment was the idle moment of transmitter
In a moment or the first moment be transmitter free time length finish time, then, in the finish time of sequence information,
Receiver receives the valid data that transmitter is sent.When to not need to pass through GPS positioning during realizing sign synchronization
Clock determines clock source, in turn, reduces the cost for realizing sign synchronization.
On the basis of the above embodiments, receiver is before the sequence information that the first reception to transmitter is sent,
Phase deviation can be obtained with rough estimate phase deviation, i.e. receiver.
Phase deviation in the present embodiment includes that receiver is carved and be switched on during shutdown the deviation of moment phase.
Specifically, receiver obtains clock jitter according to filter, wherein clock jitter includes that receiver is carved during shutdown
With the clock jitter at booting moment.Then, receiver obtains the closing duration of itself, and the shut-in time includes the receiver shutdown moment
To the duration at booting moment, followed by receiver obtains the clock frequency of itself, and then, receiver is according to clock jitter, closing
Duration and clock frequency determine phase deviation that is, by the product between clock jitter, closing duration and clock frequency.
Obtaining phase deviation for receiver includes two kinds of realizations scene at least below:
The first realize scene, during the break between module close in the case of, using the time of having a rest, estimation code partially, system
Clock and symbol clock frequence estimation go out phase deviation；
Scene is realized in second, in GP, synchronization module still works, and phase is beated with fixed step-length, until receiver
It is again turned on, further according to received sequence information, determines phase deviation.
Fig. 2 be another embodiment of the present invention provides data transmission synchronization method flow diagram, as shown in Fig. 2, this
The data transmission synchronization method of embodiment, comprising:
Step 201, transmitter send sequence information at the first moment.
The applicable scene of the present embodiment are as follows: the first is applicable in scene, under FDD system, when establishing sign synchronization；Alternatively, the
Two applicable scenes, in a tdd system, when receiving end will be switched to sending mode.Need it is noted that no matter above-mentioned which kind of
It is applicable in scene, the present embodiment is under the scene for opening receiver symbol synchronization module.
In the present embodiment, sequence information to indicate transmitter sequence information finish time send valid data,
Wherein, the first moment was moment in the idle moment of transmitter or the first moment was the end of transmitter idle moment
Moment.
Sequence information in the present embodiment may include: 0 and 1 alternate sequence of rules or pseudo-random sequence.
Step 202, transmitter send valid data to receiver in the finish time for sending sequence information.
In the present embodiment, transmitter sends sequence information at the first moment, wherein the sequence information is sent to indicate
Machine sends valid data in the finish time of sequence information, and the first moment was the moment in the idle moment of transmitter, or
First moment was the finish time of transmitter idle moment, and then, transmitter is in the finish time for sending sequence information, to reception
Machine sends valid data.To not need to determine clock source by GPS positioning clock during realizing sign synchronization, into
And reduce the cost for realizing sign synchronization.
Fig. 3 is the flow diagram for the data transmission synchronization method that yet another embodiment of the invention provides, and Fig. 4 is the present invention one
The operation schematic diagram for two transceiver data transmission synchronizations that embodiment provides.It as shown in Figure 3 and Figure 4, include transceiver in Fig. 4
A and transceiver B, wherein referred to as receiver A when transceiver A is received, the referred to as transmitter A when sending, transceiver B is similar,
Details are not described herein, the data transmission synchronization method of the present embodiment, comprising:
Step 301, receiver B rough estimate phase deviation.
Specifically, receiver B according to filter obtain clock jitter, wherein clock jitter include receiver B during shutdown
Carve the clock jitter with the booting moment.Then, receiver B obtains the closing duration of itself, and the shut-in time includes receiver B shutdown
The duration at moment to the moment that is switched on, followed by receiver B obtains the clock frequency of itself, and then, receiver B is inclined according to clock
Difference closes duration and clock frequency, that is, passes through clock jitter, closes the product between duration and clock frequency, determine that phase is inclined
Difference.
Step 302, transmitter A send sequence information at the first moment.
The sequence information that step 303, receiver B are sent in the first reception to transmitter.
In the present embodiment, receiver B was determined in the finish time of sequence information, will receive having for transmitter A transmission
Imitate data.
It in the first reception to the sequence information that transmitter A is sent at least may include following two for receiver B
Implementation:
The first implementation carries out phase convergence using single order loop filter when receiver B receives sequence information,
In the first predetermined time, receiver B, which is determined, is switched to second-order loop filter for single order loop filter, wherein single order annular
Filter is faster than second order loop filter progress phase convergence.
Second of implementation carries out phase convergence using single order loop filter when receiver B receives sequence information,
The error that receiver B is fed back according to digital controlled oscillator, that is, when error is less than preset value, receiver B is determined single order annular filter
Wave device is switched to second-order loop filter, wherein single order loop filter is faster than second order loop filter progress phase convergence.
Step 304, transmitter A send valid data to receiver B in the finish time for sending sequence information.
In the present embodiment, which may include: 0 and 1 alternate sequence of rules or pseudo-random sequence.
Step 305, the finish time in sequence information, receiver B receive the valid data that transmitter A is sent.
In the present embodiment, it does not need to determine clock source by GPS positioning clock during realizing sign synchronization, into
And reduce the cost for realizing sign synchronization.
Fig. 5 is the structural schematic diagram for the data transmission synchronization device that one embodiment of the invention provides, as shown in figure 5, the number
According to transmission synchronizing device, comprising: receiver 51, transmitter 52 and processor 53, the receiver 51, for being connect at the first moment
Receive transmitter transmission sequence information, the sequence information to indicate the transmitter the sequence information at the end of
It carves and sends valid data, first moment is the moment or first moment in the idle moment of the transmitter
For the finish time of the transmitter free time length；For the finish time in the sequence information, the transmitter hair is received
The valid data sent.
In the present embodiment, the sequence information that receiver is sent in the first reception to transmitter, the sequence information are used
To indicate that transmitter sends valid data in the finish time of sequence information, wherein the first moment was the idle moment of transmitter
In a moment or the first moment be transmitter free time length finish time, then, in the finish time of sequence information,
Receiver receives the valid data that transmitter is sent.When to not need to pass through GPS positioning during realizing sign synchronization
Clock determines clock source, in turn, reduces the cost for realizing sign synchronization.
On the basis of the above embodiments, receiver 51 are specifically used for receiving the sequence by single order loop filter
Information.
On the basis of the above embodiments, processor 53, in the first predetermined time, alternatively, the receiver according to
The error of digital controlled oscillator feedback, determines the single order loop filter being switched to second-order loop filter, the single order ring
Mode filter is faster than second order loop filter progress phase convergence.
Further, on the basis of the above embodiments, receiver 51, are also used to obtain phase deviation, and the phase is inclined
Difference includes that the receiver is carved and be switched on during shutdown the deviation of moment phase.
On the basis of the above embodiments, receiver 51 are specifically used for obtaining clock jitter, the clock according to filter
Deviation include the receiver carve during shutdown with booting the moment clock jitter；Obtain the closing duration of itself, the closing
Time includes the duration at the receiver shutdown moment to the moment that is switched on；Obtain the clock frequency of itself；The processor 53, also
For determining the phase deviation according to the clock jitter, closing duration and clock frequency.
Optionally, on the basis of the above embodiments, sequence information, comprising: 0 and 1 alternate sequence of rules, or it is pseudo- with
Machine sequence.
In the present embodiment, it does not need to determine clock source by GPS positioning clock during realizing sign synchronization, into
And reduce the cost for realizing sign synchronization.
Fig. 6 be another embodiment of the present invention provides data transmission synchronization device structural schematic diagram, as shown in fig. 6, number
According to transmission synchronizing device, comprising: receiver 61, transmitter 62 and processor 63, the transmitter 62, for being sent out at the first moment
Sequence information is sent, the sequence information is to indicate that transmitter sends valid data, institute in the finish time of the sequence information
When to state moment in the idle moment that the first moment was the transmitter or first moment be the transmitter free time
The finish time at quarter；For sending the valid data to the receiver in the finish time for sending sequence information.
In the present embodiment, transmitter sends sequence information at the first moment, wherein the sequence information is sent to indicate
Machine sends valid data in the finish time of sequence information, and the first moment was the moment in the idle moment of transmitter, or
First moment was the finish time of transmitter idle moment, and then, transmitter is in the finish time for sending sequence information, to reception
Machine sends valid data.To not need to determine clock source by GPS positioning clock during realizing sign synchronization, into
And reduce the cost for realizing sign synchronization.
On the basis of the above embodiments, the sequence information, comprising: 0 and 1 alternate sequence of rules or pseudorandom
Sequence.
In the present embodiment, it does not need to determine clock source by GPS positioning clock during realizing sign synchronization, into
And reduce the cost for realizing sign synchronization.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the portion of each embodiment the method for the present invention
Step by step.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation
ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic or disk etc. are various can store
The medium of program code.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (12)
1. a kind of data transmission synchronization method characterized by comprising
The sequence information that receiver is sent in the first reception to transmitter, the sequence information is to indicate the transmitter
Valid data are sent in the finish time of the sequence information, first moment is one in the idle moment of the transmitter
Moment or first moment are the finish time of the transmitter free time length；
In the finish time of the sequence information, the receiver receives the valid data that the transmitter is sent；
The sequence information that the receiver is sent in the first reception to transmitter, comprising:
The receiver receives the sequence information by single order loop filter；
The receiver is received by single order loop filter after the sequence information, further includes:
In the first predetermined time, alternatively, the error that the receiver is fed back according to digital controlled oscillator, the receiver is determined institute
State single order loop filter and be switched to second order loop filter, the single order loop filter than the second order loop filter into
Row phase convergence is fast.
2. the method according to claim 1, wherein the receiver is sent in the first reception to transmitter
Sequence information before, further includes:
The receiver obtains phase deviation, and the phase deviation includes that the receiver is carved and booting moment phase during shutdown
Deviation.
3. according to the method described in claim 2, it is characterized in that, the receiver obtains phase deviation, the phase deviation
It carves and is switched on during shutdown including the receiver deviation of moment phase, comprising:
The receiver obtains clock jitter according to filter, and the clock jitter includes that the receiver is carved and opened during shutdown
The clock jitter at machine moment；
The receiver obtains the closing duration of itself, and the shut-in time includes receiver shutdown moment to the moment that is switched on
Duration；
The receiver obtains the clock frequency of itself；
The receiver determines the phase deviation according to the clock jitter, closing duration and clock frequency.
4. the method according to claim 1, wherein the sequence information, comprising: 0 and 1 alternate regular sequence
Column or pseudo-random sequence.
5. according to the method described in claim 2, it is characterized in that, the sequence information, comprising: 0 and 1 alternate regular sequence
Column or pseudo-random sequence.
6. according to the method described in claim 3, it is characterized in that, the sequence information, comprising: 0 and 1 alternate regular sequence
Column or pseudo-random sequence.
7. a kind of data transmission synchronization device characterized by comprising receiver, transmitter and processor, the receiver,
Sequence information for sending in the first reception to transmitter, the sequence information is to indicate the transmitter described
The finish time of sequence information sends valid data, and first moment is the moment in the idle moment of the transmitter,
Or first moment is the finish time of the transmitter free time length；For the finish time in the sequence information,
Receive the valid data that the transmitter is sent；
The receiver is specifically used for receiving the sequence information by single order loop filter；
The processor is used in the first predetermined time, alternatively, being determined according to the error that digital controlled oscillator is fed back by described one
Rank loop filter is switched to second order loop filter, and the single order loop filter carries out phase than the second order loop filter
Position convergence is fast.
8. device according to claim 7, which is characterized in that the receiver is also used to obtain phase deviation, the phase
Position deviation includes that receiver is carved and be switched on during shutdown the deviation of moment phase.
9. device according to claim 8, which is characterized in that the receiver, when specifically for being obtained according to filter
Clock deviation, the clock jitter include the receiver carve during shutdown with booting the moment clock jitter；Obtain the pass of itself
Duration is closed, the shut-in time includes the duration at the receiver shutdown moment to the moment that is switched on；Obtain the clock frequency of itself；
The processor is also used to according to the clock jitter, closes duration and clock frequency, determines the phase deviation.
10. device according to claim 7, which is characterized in that the sequence information, comprising: 0 and 1 alternate regular sequence
Column or pseudo-random sequence.
11. device according to claim 8, which is characterized in that the sequence information, comprising: 0 and 1 alternate regular sequence
Column or pseudo-random sequence.
12. device according to claim 9, which is characterized in that the sequence information, comprising: 0 and 1 alternate regular sequence
Column or pseudo-random sequence.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271413.3A CN105227287B (en) | 2014-06-17 | 2014-06-17 | data transmission synchronization method and device |
| PCT/CN2015/076454 WO2015192681A1 (en) | 2014-06-17 | 2015-04-13 | Method and device for synchronizing data transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410271413.3A CN105227287B (en) | 2014-06-17 | 2014-06-17 | data transmission synchronization method and device |
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| CN105227287A CN105227287A (en) | 2016-01-06 |
| CN105227287B true CN105227287B (en) | 2018-12-25 |
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| CN1848828A (en) * | 2005-04-15 | 2006-10-18 | 上海无线通信研究中心 | Signal transmitting method and apparatus based on cyclic prefix |
| CN1964227A (en) * | 2005-11-11 | 2007-05-16 | 华为技术有限公司 | A method for data interaction and data transmit-receive module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1294712C (en) * | 2002-01-25 | 2007-01-10 | 北京润光泰力科技发展有限公司 | Synchronous method and equipment for orthogonal FDM modulation system |
| CN100365964C (en) * | 2005-09-16 | 2008-01-30 | 北京大学 | Device and method for improving timed synchronous regulation precision |
| CN101119353A (en) * | 2006-07-25 | 2008-02-06 | 北京凌讯华业科技有限公司 | Ldpc coding based tds-ofdm communication system transmitter |
| CN101192846B (en) * | 2007-07-25 | 2011-11-30 | 中兴通讯股份有限公司 | A self-adapted method for setting protection interval of overlapping cutting method |
| EP2141877A1 (en) * | 2008-06-30 | 2010-01-06 | THOMSON Licensing | Receiver and method for frequency offset estimation based on correlation techniques |
| CN102256347B (en) * | 2011-07-26 | 2015-09-30 | 国网信息通信有限公司 | The synchronous method of flexible sub-carrier ofdm system and device |
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2014
- 2014-06-17 CN CN201410271413.3A patent/CN105227287B/en active Active
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848828A (en) * | 2005-04-15 | 2006-10-18 | 上海无线通信研究中心 | Signal transmitting method and apparatus based on cyclic prefix |
| CN1964227A (en) * | 2005-11-11 | 2007-05-16 | 华为技术有限公司 | A method for data interaction and data transmit-receive module |
Also Published As
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| CN105227287A (en) | 2016-01-06 |
| WO2015192681A1 (en) | 2015-12-23 |
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