CN106603452A - Timing sampling and frequency offset correction method based on multi-channel communication reception system - Google Patents
Timing sampling and frequency offset correction method based on multi-channel communication reception system Download PDFInfo
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- CN106603452A CN106603452A CN201710100837.7A CN201710100837A CN106603452A CN 106603452 A CN106603452 A CN 106603452A CN 201710100837 A CN201710100837 A CN 201710100837A CN 106603452 A CN106603452 A CN 106603452A
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- node
- sampling period
- communication channel
- sampling
- reception system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
Abstract
The invention discloses a timing sampling and frequency offset correction method based on a multi-channel communication reception system. The method includes the step: the channel communication reception system performs power-on initialization. According to the method, problems that according to the conventional method, the timing precision cannot be controlled, the phenomenon of time drift is generated, long-term stabilization and synchronous operation cannot be realized, and repeated data acquisition and data omission possibly occur are overcome.
Description
Technical field
The invention belongs to wireless communication technology field.Specifically related to a kind of timing based on multichannel communication reception system is adopted
Sample and frequency deviation correcting method.
Background technology
In multichannel communication reception system system, when a register can not meet the requirement of transmission services, by phase
Adjacent register is unified into an entirety and communication service is transmitted, and existing timing sampling master-slave equipment is due to software and hardware time delay
The synchronization of clock can not be well kept, brings timing accuracy uncontrollable, generation time drift phenomenon, it is impossible to which long-time is steady
Fixed, synchronous operation problem, it is also possible to collect the data of repetition and miss data.
The content of the invention
The invention aims to overcome a kind of timing based on multichannel communication reception system of above-mentioned not enough offer to adopt
Sample and frequency deviation correcting method.
A kind of timing sampling and frequency deviation correcting method based on multichannel communication reception system, comprises the following steps：
Multichannel communication reception system carries out power-up initializing；
Receive each communication channel node signal in multichannel communication reception system；
Each communication channel node signal to receiving is timed sampling processing, obtains each communication channel node timing
Sampled signal.
Each communication channel node signal to receiving carries out frequency offset correction process, obtains each communication channel node correction
Signal.
Further, each communication channel node signal of described pair of reception is timed sampling processing and is newly specially：
Need the node that the register for updating is located as host node in multichannel communication reception system network, main section is with solid
Frequency transmission time information is determined to from node；
Host node sends sampled data, sets the master node samples cycle；
It is scanned with fixed frequency from node, receives the sampled data of host node；
After the sampled data of host node is received from node, master node number and frequency are recorded, and should with fixed frequency transmission
Answer is according to host node；
Judge whether host node receives the reply data from node within the sampling period, continue if not to from node
Sampled data is sent, until receiving the reply data from node, and the time that host node receives reply data is recorded；
Repeat the above steps 10 times；
Calculate 10 times and receive the average time of reply data as the new sampling period；
10 samplings of next stage are carried out according to the new sampling period.
Further, described pair reception each communication channel node signal carry out frequency offset correction process be specially：
Each corresponding centre cap coefficient of communication channel node correction signal is obtained, each communication channel node correction letter
Number corresponding output phase；
Each communication channel node is obtained according to centre cap coefficient and each communication channel node output phase and estimates frequency
Bias；
Each communication channel node is obtained according to centre cap coefficient and estimates frequency deviation；
Each two communication channel node is estimated into that frequency deviation carries out gain control and superposition synthesis is processed.
Further, it is described that each two communication channel node is estimated into that frequency deviation carries out gain control and superposition synthesizes what is processed
Step is specially：
Channel gain examination is set to into 1；
Whether the detection new sampling period exceedes the sampling period on last stage, if more than the sampling period on last stage,
Then turn next step, if the sampling period only on last stage, now the sampling period is normal, completes digital-to-analogue conversion；
Now it is judged as that the sampling period transfinites, channel gain is switched to into most safety gain；
Detect whether the new sampling period exceedes the sampling period on last stage again, if more than sampling week on last stage
Phase, then turn next step, otherwise now the sampling period is normal, completes digital-to-analogue conversion；
Now it is judged as being transfinited in the most safety gain down-sampling cycle；
Detection sampling period peak value；
According to sampling period peakvalue's checking result, forward path gain is adjusted；
Sampling period is all resetted.
The method of the present invention is by node by each communication channel node signal in reception multichannel communication reception system；
Each communication channel node signal to receiving is timed sampling processing, obtains each communication channel node timing sampling letter
Number.Each communication channel node signal to receiving carries out frequency offset correction process, obtains each communication channel node correction signal
Etc. step uncontrollable, the generation time drift phenomenon that overcomes existing method timing accuracy, it is impossible to long-time stable, synchronous fortune
OK, it is also possible to the problems such as collecting the data of repetition and miss data.
Description of the drawings
Fig. 1 is the inventive method schematic flow sheet.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated：
A kind of timing sampling and frequency deviation correcting method based on multichannel communication reception system, comprises the following steps：
Multichannel communication reception system carries out power-up initializing；
Receive each communication channel node signal in multichannel communication reception system；
Each communication channel node signal to receiving is timed sampling processing, obtains each communication channel node timing
Sampled signal.
Each communication channel node signal to receiving carries out frequency offset correction process, obtains each communication channel node correction
Signal.
Each communication channel node signal of described pair of reception is timed sampling processing and is newly specially：
Need the node that the register for updating is located as host node in multichannel communication reception system network, main section is with solid
Frequency transmission time information is determined to from node；
Host node sends sampled data, sets the master node samples cycle；
It is scanned with fixed frequency from node, receives the sampled data of host node；
After the sampled data of host node is received from node, master node number and frequency are recorded, and should with fixed frequency transmission
Answer is according to host node；
Judge whether host node receives the reply data from node within the sampling period, continue if not to from node
Sampled data is sent, until receiving the reply data from node, and the time that host node receives reply data is recorded；
Repeat the above steps 10 times；
Calculate 10 times and receive the average time of reply data as the new sampling period；
10 samplings of next stage are carried out according to the new sampling period.
Each communication channel node signal of described pair of reception carries out frequency offset correction process and is specially：
Each corresponding centre cap coefficient of communication channel node correction signal is obtained, each communication channel node correction letter
Number corresponding output phase；
Each communication channel node is obtained according to centre cap coefficient and each communication channel node output phase and estimates frequency
Bias；
Each communication channel node is obtained according to centre cap coefficient and estimates frequency deviation；
Each two communication channel node is estimated into that frequency deviation carries out gain control and superposition synthesis is processed.
It is described that each two communication channel node is estimated into that frequency deviation carries out gain control and superposition synthesis has the step of process
Body is：
Channel gain examination is set to into 1；
Whether the detection new sampling period exceedes the sampling period on last stage, if more than the sampling period on last stage,
Then turn next step, if the sampling period only on last stage, now the sampling period is normal, completes digital-to-analogue conversion；
Now it is judged as that the sampling period transfinites, channel gain is switched to into most safety gain；
Detect whether the new sampling period exceedes the sampling period on last stage again, if more than sampling week on last stage
Phase, then turn next step, otherwise now the sampling period is normal, completes digital-to-analogue conversion；
Now it is judged as being transfinited in the most safety gain down-sampling cycle；
Detection sampling period peak value；
According to sampling period peakvalue's checking result, forward path gain is adjusted；
Sampling period is all resetted.
Claims (4)
1. a kind of timing sampling and frequency deviation correcting method based on multichannel communication reception system, it is characterised in that including following step
Suddenly：
Multichannel communication reception system carries out power-up initializing；
Receive each communication channel node signal in multichannel communication reception system；
Each communication channel node signal to receiving is timed sampling processing, obtains each communication channel node timing sampling
Signal.
Each communication channel node signal to receiving carries out frequency offset correction process, obtains each communication channel node correction letter
Number.
2. the timing sampling and frequency deviation correcting method based on multichannel communication reception system according to claim 1, it is special
Levy is that each communication channel node signal of described pair of reception is timed sampling processing and is newly specially：
The node that the register for updating is located is needed in multichannel communication reception system network as host node, main section is with fixed frequency
Rate transmission time information is given from node；
Host node sends sampled data, sets the master node samples cycle；
It is scanned with fixed frequency from node, receives the sampled data of host node；
After the sampled data of host node is received from node, master node number and frequency are recorded, and answer number is sent with fixed frequency
According to host node；
Judge whether host node receives the reply data from node within the sampling period, continue if not to from node send adopt
Sample data, until receiving the reply data from node, and record the time that host node receives reply data；
Repeat the above steps 10 times；
Calculate 10 times and receive the average time of reply data as the new sampling period；
10 samplings of next stage are carried out according to the new sampling period.
3. the timing sampling and frequency deviation correcting method based on multichannel communication reception system according to claim 2, it is special
Levy be described pair reception each communication channel node signal carry out frequency offset correction process be specially：
Obtain each corresponding centre cap coefficient of communication channel node correction signal, each communication channel node correction signal pair
The output phase answered；
Each communication channel node is obtained according to centre cap coefficient and each communication channel node output phase and estimates frequency deviation value；
Each communication channel node is obtained according to centre cap coefficient and estimates frequency deviation；
Each two communication channel node is estimated into that frequency deviation carries out gain control and superposition synthesis is processed.
4. the timing sampling and frequency deviation correcting method based on multichannel communication reception system according to claim 3, it is special
Levy be it is described by each two communication channel node estimate frequency deviation carry out gain control and superposition synthesis process the step of it is concrete
For：
Channel gain examination is set to into 1；
Whether the detection new sampling period exceedes the sampling period on last stage, if more than the sampling period on last stage, turning
Next step, if the sampling period only on last stage, now the sampling period is normal, completes digital-to-analogue conversion；
Now it is judged as that the sampling period transfinites, channel gain is switched to into most safety gain；
Detect whether the new sampling period exceedes the sampling period on last stage again, if more than the sampling period on last stage,
Then turn next step, otherwise now the sampling period is normal, completes digital-to-analogue conversion；
Now it is judged as being transfinited in the most safety gain down-sampling cycle；
Detection sampling period peak value；
According to sampling period peakvalue's checking result, forward path gain is adjusted；
Sampling period is all resetted.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019127447A1 (en) * | 2017-12-29 | 2019-07-04 | 华为技术有限公司 | Method, apparatus and system for time synchronization |
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| CN101075754A (en) * | 2007-05-18 | 2007-11-21 | 南京力导科技股份有限公司 | Method for sampling, controlling and transmitting data synchronously |
| CN102457452A (en) * | 2010-10-19 | 2012-05-16 | 中兴通讯股份有限公司 | Method for calculating frequency offset estimated value and channel estimated value and LTE base station |
| CN102783107A (en) * | 2012-05-23 | 2012-11-14 | 华为技术有限公司 | Method and device for correcting frequency offset |
| CN105162570A (en) * | 2015-09-11 | 2015-12-16 | 北京华清瑞达科技有限公司 | Timing synchronization method and device for signal parallel processing |
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2017
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101075754A (en) * | 2007-05-18 | 2007-11-21 | 南京力导科技股份有限公司 | Method for sampling, controlling and transmitting data synchronously |
| CN102457452A (en) * | 2010-10-19 | 2012-05-16 | 中兴通讯股份有限公司 | Method for calculating frequency offset estimated value and channel estimated value and LTE base station |
| CN102783107A (en) * | 2012-05-23 | 2012-11-14 | 华为技术有限公司 | Method and device for correcting frequency offset |
| CN105162570A (en) * | 2015-09-11 | 2015-12-16 | 北京华清瑞达科技有限公司 | Timing synchronization method and device for signal parallel processing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019127447A1 (en) * | 2017-12-29 | 2019-07-04 | 华为技术有限公司 | Method, apparatus and system for time synchronization |
| US11171769B2 (en) | 2017-12-29 | 2021-11-09 | Huawei Technologies Co., Ltd. | Time synchronization method, apparatus, and system |
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| CN106603452B (en) | 2019-12-10 |
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Effective date of registration: 20200420 Address after: No. 368, Keyun Road, hi tech Zone, Chengdu, Sichuan 610000 Patentee after: Chengdu Mifeng perception Technology Co., Ltd Address before: Wuhan University of science and Technology Park of East Lake high tech Development Zone 430000 Hubei city of Wuhan province Hongshan District No. 2 Patentee before: WUHAN MIFENG COMMUNICATION TECHNOLOGY Co.,Ltd. |