CN111600825A - Synchronization method based on equal interval time pulse - Google Patents
Synchronization method based on equal interval time pulse Download PDFInfo
- Publication number
- CN111600825A CN111600825A CN202010415884.2A CN202010415884A CN111600825A CN 111600825 A CN111600825 A CN 111600825A CN 202010415884 A CN202010415884 A CN 202010415884A CN 111600825 A CN111600825 A CN 111600825A
- Authority
- CN
- China
- Prior art keywords
- synchronization
- time
- receiving end
- data
- received
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 238000004364 calculation method Methods 0.000 claims abstract description 3
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 10
- 230000010354 integration Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
- H04L27/2659—Coarse or integer frequency offset determination and synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
- H04L27/266—Fine or fractional frequency offset determination and synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a synchronization method based on equal interval time pulse, which is characterized in that a clock calibration device at a sending end is used for opening the time calibration of the sending end when the sending end sends a signal and sending data on the time calibration; and the receiving end clock calibration device is used for quickly and accurately positioning the synchronous position. The probability of false triggering can be reduced, so that synchronization is performed without overlong synchronous data, the synchronization time is shortened, the calculation amount of a synchronization algorithm is reduced, the hardware cost is saved, the data synchronization of a receiving end and a transmitting end is realized quickly, the probability of false triggering is reduced, and the precision and the communication performance are improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a synchronization method based on equally spaced time pulses.
Background
In recent years, with the implementation of national smart grids, the demand for digital communication is increasing, and synchronization is a very important problem in communication systems, especially in digital communication systems. If the synchronization is deviated, the following transmission data transmission is inaccurate, and even the communication fails.
The traditional synchronization method generally adopts the method of increasing the synchronization time to solve the synchronization problem, carries out coarse carrier synchronization at any time, and then completes the time synchronization of a receiving end by utilizing the fine carrier synchronization. The coarse carrier synchronization easily causes false triggering under the condition of low signal-to-noise ratio, and a very long synchronization frame header needs to be designed; if the length of the transmitted signal is not long, the synchronization time even exceeds the time for transmitting and receiving the real data during continuous data interaction, so that the synchronization time is long, the efficiency is not high, the actual communication rate is influenced, and the communication performance is reduced.
Disclosure of Invention
The invention aims to provide a synchronization method based on equal interval time pulse, which utilizes the same clock scale devices of a sending end and a receiving end and adopts the modes of coarse carrier synchronization and fine carrier synchronization to quickly realize the data synchronization of the receiving end and the sending end, shorten the synchronization time, reduce the false triggering probability and improve the precision and the communication performance.
In order to achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: the sending end uses a local clock device to generate sending end equal interval time pulses, and sends data at the equal interval time pulses; the receiving end adopts coarse carrier synchronization and fine carrier synchronization to receive data to complete primary synchronization; after the data of the frame is checked to be received correctly, the primary synchronization time is estimated correctly by adopting the receiving; and generating the receiving end equal interval time pulse by using a receiving end local clock device according to the primary synchronization time.
In order to achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: the sending end continuously sends data, the receiving end receives the data at each receiving end equal interval time pulse, coarse carrier synchronization and fine carrier synchronization are carried out, the estimated synchronization time is used for checking the equal interval pulses of the receiving end every time, after the checking is correct, the sending end data are received again by using the calibrated receiving end equal interval time pulses, and the action is repeated.
In order to achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: and when the receiving end cannot realize the correct data synchronization or check the data receiving error for a long time, the initial synchronization action is carried out again, and the initial synchronization time is estimated.
In order to achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: by using coarse carrier synchronization, firstly finding and sending a single-transmission data signal, and preliminarily positioning a coarse initial position of a code element in the signal; and performing phase synchronization and code element synchronization calculation by utilizing fine carrier synchronization, and accurately positioning the synchronization position.
In order to achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: the symbol synchronization acquires synchronization information from a received signal, so that a clock pulse sequence generated by a receiving end keeps a correct relation with the start and stop time of a received symbol. The receiving end generates a clock pulse sequence which is strictly synchronous with the received code element, the period of the clock pulse sequence is the same as the period of the received code element, the phase of the clock pulse sequence is aligned with the starting and stopping time of the received code element, and the integration interval and the sampling judgment time of each code element are determined.
The invention has the beneficial effects that: by the aid of the equal-interval time pulses, the problem of false triggering of communication synchronization in low signal-to-noise ratio is solved; the synchronization time is shortened, and the synchronization accuracy is improved.
Drawings
Fig. 1 is a simplified process diagram of the synchronization method based on equally spaced time pulses according to the present invention.
FIG. 2 is a flow chart of the synchronization method based on the equal interval time pulse of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a simplified process diagram of a synchronization method based on equally spaced time pulses according to an embodiment of the present invention. As shown in fig. 1, the method includes:
step 1: the sending end sends data based on the equal interval time pulse generated by the sending end time scale device;
step 2: the receiving end receives data, estimates the initial sending time, utilizes the receiving end time scale device to generate equal interval time pulse, and receives the subsequent data at the receiving end equal interval time pulse sequence.
Fig. 2 is a flowchart of a synchronization method based on equally spaced time pulses according to an embodiment of the present invention. As shown in fig. 2, the method includes:
step 1: and generating the sending end equal interval time pulse by using a local clock calibration device at the sending end. Transmitting data at the synchronization pulse;
step 2: a receiving end receives first frame data, primary synchronization is completed by adopting a coarse carrier synchronization method and a fine carrier synchronization method, the frame data is verified and then is displayed to be correctly received, and then the correct data received at this time is adopted to estimate a primary synchronization time and give an initial pulse;
and step 3: according to the estimated primary synchronization time, generating equal interval time pulses by using a receiving end local clock scale device;
and 4, step 4: receiving data sent by a sending end at a receiving end at an equal interval pulse sequence, and carrying out coarse carrier synchronization and fine carrier synchronization; after each frame of subsequently received data is correctly received, estimating the synchronization time, calibrating the equal interval time pulse of the receiving end, and receiving the signal data according to the calibrated equal interval time pulse;
and 5: and (4) the program of the receiving end cannot be correctly synchronized for a long time or the data is checked to be wrong after synchronization, the step (2) is repeated for synchronization again, and the primary synchronization time is estimated.
Claims (5)
1. A method for synchronization based on equally spaced time pulses, the method comprising:
the sending end uses a local clock device to generate sending end equal interval time pulses, and sends data at the equal interval time pulses;
the receiving end adopts coarse carrier synchronization and fine carrier synchronization to receive data to complete primary synchronization;
after the data of the frame is checked to be received correctly, the primary synchronization time is estimated correctly by adopting the receiving;
and generating the receiving end equal interval time pulse by using a receiving end local clock device according to the primary synchronization time.
2. The method of claim 1, wherein the method further comprises:
by using coarse carrier synchronization, firstly finding and sending a single-transmission data signal, and preliminarily positioning a coarse initial position of a code element in the signal;
fine carrier synchronization is utilized to carry out phase synchronization and code element synchronization calculation, and the synchronization position is accurately positioned;
after the synchronous position is positioned, the clock calibration device at the receiving end generates pulses with equal interval time.
3. The method as claimed in claim 1, wherein the transmitting end continuously transmits data, the receiving end receives data, and performs coarse carrier synchronization and fine carrier synchronization at each equally spaced time pulse at the receiving end, after checking that the receiving is correct, the equally spaced time pulses at the receiving end are calibrated by using the estimated synchronization time of the receiving, and the data transmitted by the transmitting end continues to be received after the calibration.
4. The method of claim 2, wherein the symbol synchronization acquires synchronization information from the received signal to maintain a correct relationship between the clock pulse sequence generated at the receiving end and the start-stop time of the received symbol; the receiving end generates a clock pulse sequence which is strictly synchronous with the received code element, the period of the clock pulse sequence is the same as the period of the received code element, the phase of the clock pulse sequence is aligned with the starting and stopping time of the received code element, and the integration interval and the sampling judgment time of each code element can be determined.
5. The method as claimed in claim 3, wherein when the receiving end fails to achieve the correct synchronization of the data or checks that the data is received incorrectly for a long time, the initial synchronization action as claimed in claim 1 is performed again, and the initial synchronization time is estimated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010415884.2A CN111600825B (en) | 2020-05-16 | 2020-05-16 | Synchronization method based on equidistant time pulses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010415884.2A CN111600825B (en) | 2020-05-16 | 2020-05-16 | Synchronization method based on equidistant time pulses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111600825A true CN111600825A (en) | 2020-08-28 |
| CN111600825B CN111600825B (en) | 2023-05-12 |
Family
ID=72191326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010415884.2A Active CN111600825B (en) | 2020-05-16 | 2020-05-16 | Synchronization method based on equidistant time pulses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111600825B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0421218A (en) * | 1990-05-16 | 1992-01-24 | Toshiba Corp | Satellite communication equipment and satellite communication system |
| US5137022A (en) * | 1990-07-13 | 1992-08-11 | Cook Pacemaker Corporation | Synchronous telemetry system and method for an implantable medical device |
| US6459744B1 (en) * | 1996-01-18 | 2002-10-01 | France Telecom, Telediffusion De France | Multi-carrier symbol synchronization |
| CN1936605A (en) * | 2006-10-10 | 2007-03-28 | 浙江大学 | Wide-zone electric-net phasor synchronous measuring device whose synchronous time scale can be freely set |
| CN101662448A (en) * | 2009-08-19 | 2010-03-03 | 东南大学 | Wireless communication method of high-speed sampling low-accuracy quantification impulse ultra-wideband |
| CA2882321A1 (en) * | 2011-12-14 | 2013-06-20 | Wolfson Microelectronics Plc | Data transfer |
| CN107171762A (en) * | 2017-05-09 | 2017-09-15 | 烽火通信科技股份有限公司 | A kind of 1PPS+TOD information monobus transmission synchronization system and method |
| CN107656151A (en) * | 2017-08-10 | 2018-02-02 | 国家电网公司 | Realize full-time sequence grid measurement data synchronized sampling and the investigating method of processing |
| CN108923876A (en) * | 2018-06-27 | 2018-11-30 | 北京艾瑞思机器人技术有限公司 | Method for synchronizing time, apparatus and system |
| CN208707646U (en) * | 2018-05-21 | 2019-04-05 | 科大国盾量子技术股份有限公司 | A kind of clock synchronization system in quantum secret communication |
| CN110224762A (en) * | 2018-03-02 | 2019-09-10 | 科大国盾量子技术股份有限公司 | A kind of impulsive synchronization method and system |
-
2020
- 2020-05-16 CN CN202010415884.2A patent/CN111600825B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0421218A (en) * | 1990-05-16 | 1992-01-24 | Toshiba Corp | Satellite communication equipment and satellite communication system |
| US5137022A (en) * | 1990-07-13 | 1992-08-11 | Cook Pacemaker Corporation | Synchronous telemetry system and method for an implantable medical device |
| US6459744B1 (en) * | 1996-01-18 | 2002-10-01 | France Telecom, Telediffusion De France | Multi-carrier symbol synchronization |
| CN1936605A (en) * | 2006-10-10 | 2007-03-28 | 浙江大学 | Wide-zone electric-net phasor synchronous measuring device whose synchronous time scale can be freely set |
| CN101662448A (en) * | 2009-08-19 | 2010-03-03 | 东南大学 | Wireless communication method of high-speed sampling low-accuracy quantification impulse ultra-wideband |
| CA2882321A1 (en) * | 2011-12-14 | 2013-06-20 | Wolfson Microelectronics Plc | Data transfer |
| CN107171762A (en) * | 2017-05-09 | 2017-09-15 | 烽火通信科技股份有限公司 | A kind of 1PPS+TOD information monobus transmission synchronization system and method |
| CN107656151A (en) * | 2017-08-10 | 2018-02-02 | 国家电网公司 | Realize full-time sequence grid measurement data synchronized sampling and the investigating method of processing |
| CN110224762A (en) * | 2018-03-02 | 2019-09-10 | 科大国盾量子技术股份有限公司 | A kind of impulsive synchronization method and system |
| CN208707646U (en) * | 2018-05-21 | 2019-04-05 | 科大国盾量子技术股份有限公司 | A kind of clock synchronization system in quantum secret communication |
| CN108923876A (en) * | 2018-06-27 | 2018-11-30 | 北京艾瑞思机器人技术有限公司 | Method for synchronizing time, apparatus and system |
Non-Patent Citations (2)
| Title |
|---|
| 苗锡奎等: "基于绝对精确时间的收发分体脉冲同步方法研究", 《激光杂志》 * |
| 黄松筠等: "混沌脉冲位置调制(CPPM)源研究", 《大学物理实验》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111600825B (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109669899B (en) | Method for adaptively adjusting serial port communication baud rate and serial port device | |
| US6658025B2 (en) | Synchronization in packet-switched telecommunications system | |
| CN106817197B (en) | Communication coding and decoding method based on duty ratio modulation | |
| CN112616181B (en) | Current differential protection data synchronization method and system adaptive to 5G communication | |
| CN104852876A (en) | Wireless aviation burst communication system | |
| CN113075710B (en) | Positioning difference information acquisition method, device, equipment and computer storage medium | |
| CN107835142B (en) | Timing synchronization method, device and storage device in coherent light OFDM communication system | |
| KR101880925B1 (en) | Network synchronization method between devices in tatical data link | |
| CN115002894A (en) | Uplink timing synchronization method, device, equipment and storage medium | |
| US20110016232A1 (en) | Time stamping apparatus and method for network timing synchronization | |
| CN111600825B (en) | Synchronization method based on equidistant time pulses | |
| CN101252390B (en) | Frame synchronization method and realizing device based on paralleling tactic | |
| CN109633704B (en) | Maximum value-based satellite communication capturing method and system | |
| CN107483291B (en) | Optical fiber longitudinal differential time synchronization method | |
| CN111107623A (en) | System clock synchronization method | |
| CN103676634A (en) | Time pulse synchronization method based on RDSS satellite navigation system | |
| CN103490856B (en) | Mark5B-format VLBI data receiving decoding and error correcting system and method used for deep space exploration | |
| WO2016000324A1 (en) | Method and apparatus for implementing time synchronization | |
| CN116257483A (en) | Asynchronous serial port communication baud rate self-adaption method and device and asynchronous serial port equipment | |
| JP2009025028A (en) | Positioning system | |
| CN109709422B (en) | Clock drift elimination method and device | |
| CN102821457A (en) | Clock synchronizing method based on software defined radio and software defined radio system | |
| CN110618957A (en) | Interface time sequence calibration method and device | |
| CN101324660B (en) | Method and apparatus for generating absolute time information and transmitting method and apparatus thereof | |
| CN111800164B (en) | UWB decoding method, device, receiver and UWB positioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240102 Address after: 266000 12th floor, 4b building, 858 Huaguan Road, high tech Zone, Qingdao City, Shandong Province Patentee after: QINGDAO TOPSCOMM COMMUNICATION Co.,Ltd. Patentee after: Qingdao Dingxin Communication Power Engineering Co.,Ltd. Address before: 266000 12th floor, 4b building, 858 Huaguan Road, high tech Zone, Qingdao City, Shandong Province Patentee before: QINGDAO TOPSCOMM COMMUNICATION Co.,Ltd. Patentee before: Shenyang Keyuan State Grid Power Engineering Survey and Design Co.,Ltd. |