CN101959228A - OFDMA system interference analytical method and device thereof - Google Patents
OFDMA system interference analytical method and device thereof Download PDFInfo
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Abstract
The invention discloses an orthogonal frequency division multiplex access system interference analytical method and a device thereof. The device comprises a radio frequency unit, a base band unit and a network management unit of the orthogonal frequency division multiplex access system; wherein the radio frequency unit is used for receiving a wireless signal and converting a received analog signal into a digital signal, the base band unit is used for analyzing the digital signal sent by the radio frequency unit, judging whether interference is existed or not and transmitting the interference analysis result to the network management unit; and the network management is used for sending configuration parameters to the base band unit, starting a interference analysis request and display interference analysis result. The configuration parameters include peak-to-average ratio threshold and symbol ratio threshold; wherein the symbol ratio threshold is threshold value of the ratio of the quantity of symbols with the peak-to-average ratio higher than the peak-to-average ratio threshold and the quantity of received total symbols in unit time, and interference is existed if symbol ratio is higher than the symbol ratio threshold.
Description
Technical field
The present invention relates to digital communicating field, relate to particularly that a kind of (OrthogonalFrequency Division Multiple Access OFDMA) carries out the method and apparatus of interference analysis in the system in OFDM.
Background technology
In the wireless signal that the OFDMA system receives, except our needed terminal signaling, may also include the signal of other information source, if the signal of these information sources drops in the channel width frequency range at OFDMA system place, and reach certain intensity, just become interference.Interference brings certain decreased performance can for the OFDMA system, and the downloading rate of uploading that causes some to insert the user such as meeting descends unstable properties etc.During serious interference, even situations such as terminal can't insert appear.
Generally, check that whether the used frequency range of OFDMA system exists the way of interference is to utilize frequency spectrograph to scan this frequency range, checks the variation of its frequency spectrum.Yet prices are rather stiff for a frequency spectrograph, and the distribution of base station disperses remotely again relatively, and carrying frequency spectrograph, to observe frequency spectrum very inconvenient.By the method for the OFDMA system realization interference analysis that the present invention introduced, utilize the hardware configuration of OFDMA system self, in conjunction with software, just can easily realize interference analysis, determine whether to exist and disturb.This will save greatly and reach the needed man power and material's cost of this purpose in the past.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of OFDMA system interference analytical method and device are provided, utilize the radio frequency unit of OFDMA system self, Base Band Unit and network management unit are in conjunction with software, carry out interference analysis, determine whether to exist the position of disturbing and disturbing.
The present invention is by the following technical solutions:
The inventive method is utilized the radio frequency unit of OFDMA system self, and Base Band Unit and network management unit are realized interference analysis.Described OFDMA system comprises radio frequency unit, Base Band Unit and network management unit, and wherein, described radio frequency unit is used for the reception of wireless signal, and the analog signal that receives is converted into digital signal, and the inventive method may further comprise the steps:
Step 1 sends to described Base Band Unit by described network management unit with configuration parameter and startup interference analysis request;
Step 2, described Base Band Unit are analyzed the digital signal that described radio frequency unit sends over after receiving configuration parameter and starting the interference analysis request, judge whether to exist and disturb;
Step 3 exists under the situation about disturbing, and described Base Band Unit sends to described network management unit with the interference analysis result and shows.
Further, network management unit shows the interference analysis result in the tabulation mode.
Further, described configuration parameter comprises peak-to-average force ratio threshold value and symbol ratio thresholding; Wherein, the peak power of an interior subcarrier of symbol time is a peak-to-average force ratio with the ratio of average power, and the peak-to-average force ratio threshold values is the threshold values of the described peak-to-average force ratio that sets in advance; The symbol ratio referred to be used in the unit interval of interference analysis, and in one second, peak-to-average force ratio surpasses the ratio of symbol numbers with the total symbol numbers that receives of peak-to-average force ratio threshold value, and then symbol ratio thresholding is the threshold value of default symbol ratio.
Further, described judge whether exist to disturb comprise:
In the unit interval, the if symbol ratio surpasses described symbol ratio thresholding, then thinks to exist and disturbs.
Again further, described interference analysis result comprises symbol ratio, peak mean value and peak variance; Wherein, described peak mean value is in the unit interval, peak-to-average force ratio surpasses the mean value of the one-dimension array that the peak of each symbol of described peak-to-average force ratio threshold values forms, described peak variance is in the unit interval, and peak-to-average force ratio surpasses the variance of the one-dimension array that the peak of each symbol of described peak-to-average force ratio threshold values forms.
The inventive method can further include:
Step 4, when needs finish the interference analysis flow process, network management unit sends to Base Band Unit and stops the interference analysis request; Base Band Unit stops data collection after receiving that this stops request, and responds to network management unit and to stop request, after network management unit is received response, stops to receive data.
Fast check the frequency spectrum situation of the used frequency range of OFDMA system for convenience, determine whether to exist and disturb, the invention provides a kind of OFDMA system interference analytical equipment, described OFDMA system comprises radio frequency unit, Base Band Unit and network management unit, wherein radio frequency unit is used for the reception of wireless signal, and the analog signal that receives is converted into digital signal.
OFDMA system interference analytical equipment of the present invention comprises described radio frequency unit, Base Band Unit and network management unit;
Wherein, described Base Band Unit also is used for the digital signal that described radio frequency unit sends over is analyzed, and judges whether to exist to disturb, and the interference analysis result is passed to described network management unit;
Described network management unit also is used for sending configuration parameter and starting the interference analysis request to described Base Band Unit, and shows the interference analysis result.
Further, network management unit shows the interference analysis result in the tabulation mode.
Further, described network management unit also is used for to described Base Band Unit transmission stopping interference analysis request.
Beneficial effect: adopt device and method of the present invention, compared with prior art, have the following advantages:
1) at hardware aspect, only need utilize the existing radio frequency unit of system, Base Band Unit and network management unit to carry out interference analysis, do not need to increase extra hardware cost basically;
2) judge whether to exist interference no longer to need to carry heavy frequency spectrograph, greatly saved manpower and materials.
Description of drawings
Fig. 1 is the interference analysis device structural representation of embodiment of the present invention;
Fig. 2 is the interference analysis schematic flow sheet of embodiment of the present invention.
Embodiment
Purpose of the present invention, technical scheme and advantage are more clear to be understood in order to make, and is described in further detail below in conjunction with the realization of drawings and Examples to technical scheme.But the embodiment here only is used to explain the present invention, but does not limit the present invention.
See also Fig. 1, be OFDMA system interference analytical equipment structural representation of the present invention.OFDMA system interference analytical equipment of the present invention comprises: radio frequency unit, Base Band Unit and network management unit.
Radio frequency unit is the radio frequency unit in the OFDMA system, is used to receive wireless signal, and the analog signal that receives is converted into digital signal.
Base Band Unit is the Base Band Unit in the OFDMA system, is used for the digital signal that radio frequency unit sends over is handled and analyzed, and judges according to configuration parameter and result calculated that network management unit sends, determines whether to exist to disturb.Disturb if exist, then the interference analysis result is reported network management unit.
Network management unit is the network management unit in the OFDMA system, is used for configuration parameter, sends to start the interference analysis request and stop the interference analysis request and demonstration interference analysis result.The interference analysis that sends over when the As-received tape cell shows in the tabulation mode as a result the time.
See also Fig. 2, be interference analysis schematic flow sheet of the present invention.This Figure illustrates the process of interference analysis, this process is specific as follows:
Step 1: from the backstage configuration parameter of network management unit, configuration parameter comprises two: peak-to-average force ratio threshold value P, symbol ratio thresholding R starts the interference analysis request command then, sends the interference analysis request to Base Band Unit.
Wherein, the peak power of an interior subcarrier of symbol time is a peak-to-average force ratio with the ratio of average power, and the peak-to-average force ratio threshold values is the threshold values of the peak-to-average force ratio that sets in advance, and unit is dB, is made as 10dB in the embodiment of the invention.The symbol ratio refers to be used in the unit interval of interference analysis, the embodiment of the invention is 1 second, peak-to-average force ratio surpasses the ratio of symbol numbers with the total symbol numbers that receives of peak-to-average force ratio threshold value, then symbol ratio thresholding is for what preset, and the peak-to-average force ratio that occurs in the unit interval reaches the symbol numbers of peak-to-average force ratio threshold value and the percentage threshold value of the total number of symbol that receives.Symbol ratio thresholding is taken as 20% in the embodiment of the invention.In the unit interval, the if symbol ratio surpasses symbol ratio thresholding, then thinks to exist and disturbs.
Step 2: after Base Band Unit is received configuration parameter and started the interference analysis request, return one to network management unit and start replying successfully.
Step 3: Base Band Unit receives the time domain data that sends over from radio frequency unit, do then fast fourier transform (Fast Fourier Transform FFT), obtains frequency domain data:
The frequency domain data that Y (k) expression receives, k represents subcarrier, then the power of each subcarrier can be by following formulate:
P(k)＝Y(k)×Y
*(k)
Step 4: Base Band Unit calculate each subcarrier correspondence plural number mould square, obtain the power of each subcarrier.The average power of all subcarriers of statistics in a symbol time, and by the contrast, determine peak power, then with peak power divided by average power, obtain peak-to-average force ratio.If peak-to-average force ratio surpasses the peak-to-average force ratio threshold value P in the step 1, the position (be peak, represent with subcarrier number) of then writing down the subcarrier at peak power place is in an one-dimension array.In 1 second time, if the ratio of the symbol numbers that peak-to-average force ratio surpasses peak-to-average force ratio threshold value P and the total symbol numbers that receives reaches the symbol ratio thresholding R that sets in the step 1, the mean value and the variance of the peak that then calculates in the one-dimension array to be preserved.
Step 5: Base Band Unit reports the interference analysis result to network management unit.The interference analysis result comprises three parameters: concrete symbol ratio r, peak mean value and peak variance.
Step 6: after network management unit receives data, the interference analysis result is shown in the tabulation mode.According to symbol ratio r, peak mean value and the peak variance among the interference analysis result, just can determine to disturb the frequency at place.
Wherein, peak mean value is in 1 second, peak-to-average force ratio surpasses the mean value of the one-dimension array that the peak of each symbol of peak-to-average force ratio threshold values P forms, and the peak variance is in 1 second, and peak-to-average force ratio surpasses the variance of the one-dimension array that the peak of each symbol of peak-to-average force ratio threshold values P forms.
Step 7: when needs stopped interference analysis, network management unit sent to Base Band Unit and stops to disturb request.
Step 8: Base Band Unit stops data collection after receiving and stopping request.
Step 9: Base Band Unit is responded to network management unit and is stopped request.
Step 10: after network management unit is received response, stop to receive data.
Be preferred embodiment of the present invention more than, be not limited to the present invention, all any modifications of being done within the present invention's spirit and principle are equal to replacement and improvement etc., all should be included in protection scope of the present invention.
Claims (9)
1. orthogonal frequency division multiple access system interference analysis method, described system comprises radio frequency unit, Base Band Unit and network management unit, wherein, described radio frequency unit is used for the reception of wireless signal, and the analog signal that receives is converted into digital signal, and it is characterized in that, comprise the steps:
Step 1 sends to described Base Band Unit by described network management unit with configuration parameter and startup interference analysis request;
Step 2, described Base Band Unit are analyzed the digital signal that described radio frequency unit sends over after receiving configuration parameter and starting the interference analysis request, judge whether to exist and disturb;
Step 3 exists under the situation about disturbing, and described Base Band Unit sends to described network management unit with the interference analysis result and shows.
2. orthogonal frequency division multiple access system interference analysis method according to claim 1 is characterized in that,
Described network management unit shows the interference analysis result in the tabulation mode.
3. orthogonal frequency division multiple access system interference analysis method according to claim 1 is characterized in that:
Described configuration parameter comprises peak-to-average force ratio threshold value and symbol ratio thresholding;
Wherein, the peak power of an interior subcarrier of symbol time is a peak-to-average force ratio with the ratio of average power, and the peak-to-average force ratio threshold values is the threshold values of the described peak-to-average force ratio that sets in advance;
The symbol ratio referred to be used in the unit interval of interference analysis, and peak-to-average force ratio surpasses the ratio of symbol numbers with the total symbol numbers that receives of peak-to-average force ratio threshold value, and then symbol ratio thresholding is the threshold value of default symbol ratio.
4. orthogonal frequency division multiple access system interference analysis method according to claim 3 is characterized in that, described judge whether exist to disturb comprise:
In the unit interval,, then think to exist and disturb if described symbol ratio surpasses described symbol ratio thresholding.
5. according to claim 3 or 4 described orthogonal frequency division multiple access system interference analysis methods, it is characterized in that:
Described interference analysis result comprises symbol ratio, peak mean value and peak variance;
Wherein, described peak mean value is in the unit interval, and peak-to-average force ratio surpasses the mean value of the one-dimension array that the peak of each symbol of described peak-to-average force ratio threshold values forms;
Described peak variance is in the unit interval, and peak-to-average force ratio surpasses the variance of the one-dimension array that the peak of each symbol of described peak-to-average force ratio threshold values forms.
6. according to each described orthogonal frequency division multiple access system interference analysis method in the claim 1 to 4, it is characterized in that described method further comprises:
Step 4, when needs finished the interference analysis flow process, network management unit sent to Base Band Unit and stops the interference analysis request; Base Band Unit stops data collection after receiving that this stops request, and responds to network management unit and to stop request, after network management unit is received response, stops to receive data.
7. orthogonal frequency division multiple access system interference analysis device, described orthogonal frequency division multiple access system comprises radio frequency unit, Base Band Unit and network management unit, described radio frequency unit is used for the reception of wireless signal, and the analog signal that receives is converted into digital signal; It is characterized in that:
Described Base Band Unit also is used for the digital signal that described radio frequency unit sends over is analyzed, and judges whether to exist to disturb, and the interference analysis result is passed to described network management unit;
Described network management unit also is used for sending configuration parameter and starting the interference analysis request to described Base Band Unit, and shows the interference analysis result.
8. orthogonal frequency division multiple access system interference analysis device according to claim 7 is characterized in that:
Described network management unit shows the interference analysis result in the tabulation mode.
9. according to claim 7 or 8 described orthogonal frequency division multiple access system interference analysis devices, it is characterized in that:
Described network management unit also is used for to described Base Band Unit transmission stopping interference analysis request.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106303344A (en) * | 2016-08-26 | 2017-01-04 | 高拓讯达（北京）科技有限公司 | The processing method and processing device of interference signal based on digital television receiver |
| CN107659954A (en) * | 2016-07-25 | 2018-02-02 | 中兴通讯股份有限公司 | A kind of terminal communication management method and device, mobile terminal |
| CN112994919A (en) * | 2019-12-17 | 2021-06-18 | 中兴通讯股份有限公司 | Communication parameter configuration method, device, equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006102793A1 (en) * | 2005-03-29 | 2006-10-05 | Zte Corporation | A method of detecting illegal occupancying frequency signal in radio communication network |
| WO2007003298A1 (en) * | 2005-06-30 | 2007-01-11 | Stmicroelectronics N.V. | Method and apparatus for reducing the interferences between a wide band device and a narrow band device interfering with said wide band device |
| CN101478656A (en) * | 2008-12-15 | 2009-07-08 | 北京创毅视讯科技有限公司 | Co-channel interference filtering method and apparatus therefor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006102793A1 (en) * | 2005-03-29 | 2006-10-05 | Zte Corporation | A method of detecting illegal occupancying frequency signal in radio communication network |
| WO2007003298A1 (en) * | 2005-06-30 | 2007-01-11 | Stmicroelectronics N.V. | Method and apparatus for reducing the interferences between a wide band device and a narrow band device interfering with said wide band device |
| CN101478656A (en) * | 2008-12-15 | 2009-07-08 | 北京创毅视讯科技有限公司 | Co-channel interference filtering method and apparatus therefor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659954A (en) * | 2016-07-25 | 2018-02-02 | 中兴通讯股份有限公司 | A kind of terminal communication management method and device, mobile terminal |
| CN106303344A (en) * | 2016-08-26 | 2017-01-04 | 高拓讯达（北京）科技有限公司 | The processing method and processing device of interference signal based on digital television receiver |
| CN112994919A (en) * | 2019-12-17 | 2021-06-18 | 中兴通讯股份有限公司 | Communication parameter configuration method, device, equipment and storage medium |
| WO2021121001A1 (en) * | 2019-12-17 | 2021-06-24 | 中兴通讯股份有限公司 | Communication parameter configuration method and apparatus, device and storage medium |
| CN112994919B (en) * | 2019-12-17 | 2024-01-26 | 中兴通讯股份有限公司 | Communication parameter configuration method, device, equipment and storage medium |
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Effective date of registration: 20171201 Address after: 065000 Langfang City, Hebei province Guangyang District Xinhua Road China 3 Building 1 unit 101 room Patentee after: Guo Haiyan Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Corporation |
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Inventor after: Guo Haiyan Inventor before: Xiao Guangjin |
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