CN102740317B - Jamming power measuring method and device - Google Patents
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- CN102740317B CN102740317B CN201110092282.9A CN201110092282A CN102740317B CN 102740317 B CN102740317 B CN 102740317B CN 201110092282 A CN201110092282 A CN 201110092282A CN 102740317 B CN102740317 B CN 102740317B
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Abstract
The invention discloses a kind of jamming power measuring method and device, in order in the time that TDD GSM normally moves, measure the jamming power of interfering signal in this TDD GSM. Wherein, described jamming power measuring method, comprising: in the protection interval of the communication frame of TDD GSM, monitor the arrival of default Measuring Time point; In the time monitoring the arrival of Measuring Time point, measure the jamming power of described TDD GSM in the interfering signal of described Measuring Time point.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of jamming power measuring method and device.
Background technology
Along with the development of mobile communication technology, the receiver of GSM is also more and more sensitiveer, if mobileIn communication system, there is the interfering signal that power is lower, the proper communication letter that just may cause receiver to receiveNumber poor, thus cause speech quality to reduce, when serious, can cause call drop. Therefore, mobile logical in order to ensureThe normal operation of communication system, whether the jamming power that need to measure interfering signal in GSM exceedes connectsThe jamming power of the interfering signal that receipts machine can be tolerated.
At present, (the jamming power of the tolerable interfering signal of receiver will shut down lower than GSMNo signal transmission in GSM) time the end power of making an uproar, greatly about-110 milli decibel (dBm) left and right.Making an uproar in the end, also referred to as ambient noise, refers to the overall noise except useful signal in GSM. Conventionally,When GSM is shut down, make an uproar and only have Space Thermal noise in the end, in the time that GSM moves, owing to drawingEnter other noises, had the lifting of certain amplitude, lifting water with respect to Space Thermal noise thereby made an uproar in the endFlat relevant to technical system and traffic load. The end power of making an uproar is higher, and the interfering signal that some power are lower can quiltMaking an uproar and flood in the end, thereby is difficult to measure its jamming power.
Therefore, in order to obtain the jamming power of interfering signal in GSM, need to be in mobile communication,The end of the system power of making an uproar is measured when lower. At present, for the jamming power of measurements interference signal, conventionally adoptGet GSM carried out to temporary transient shutdown operation, stop GSM transmit communications signals,But inventor thinks, in the measurement scheme of prior art, shutdown operation can interrupt the business of GSM,Cause GSM and user to bring greater impact.
Summary of the invention
The embodiment of the present invention provides a kind of jamming power measuring method and device, in order in TDD mobile communicationWhen system is normally moved, measure in real time the jamming power of interfering signal in this TDD GSM.
The embodiment of the present invention provides a kind of jamming power measuring method, comprising:
In the protection interval of the communication frame of TDD GSM, monitor default measurementThe arrival of time point;
In the time monitoring the arrival of Measuring Time point, measure described TDD GSM in the time of described measurementBetween the jamming power of interfering signal of point.
The embodiment of the present invention provides a kind of jamming power measurement mechanism, comprising:
Monitoring means, for the protection interval of the communication frame at TDD GSM,Monitor the arrival of default Measuring Time point;
Measuring unit, in the time monitoring Measuring Time point and arrive, measures described TDD mobile communication systemSystem is in the jamming power of the interfering signal of described Measuring Time point.
Jamming power measuring method and device that the embodiment of the present invention provides, when TDD GSM placeIn the time of normal operating condition, at the fixed time point at the protection interval of communication frame, in real time measurements interference signalJamming power, due to the not transmit communications signals of protection interval of communication frame, therefore, and in protection interval, TDDThe level of making an uproar at the bottom of GSM is lower, thus, realizes in the time that TDD GSM normally moves,Measure in real time the object of the jamming power of interfering signal in this TDD GSM.
Other features and advantages of the present invention will be set forth in the following description, and, partly from explanationIn book, become apparent, or understand by implementing the present invention. Object of the present invention and other advantages canRealize and obtain by specifically noted structure in write description, claims and accompanying drawing.
Brief description of the drawings
Fig. 1 is in the embodiment of the present invention, the implementing procedure schematic diagram of jamming power measuring method;
Fig. 2 a is in prior art, in TDD GSM, and the frame structure schematic diagram of communication frame;
Fig. 2 b is in the embodiment of the present invention, and power is made an uproar not higher than the default end in the end at the protection interval of selectingThe make an uproar schematic diagram of time period of power threshold;
Fig. 3 a is in the embodiment of the present invention, while interference continuously, and the jamming power distribution map measuring;
Fig. 3 b is in the embodiment of the present invention, and when the discontinuous interference of periodicity, the jamming power measuring distributesFigure;
Fig. 3 c is in the embodiment of the present invention, and when the discontinuous interference of aperiodicity, the jamming power measuring is dividedButut;
Fig. 4 is in the embodiment of the present invention, the integral distribution curve schematic diagram of three types interfering signal;
Fig. 5 is in the embodiment of the present invention, measures the jamming power of interfering signal in TDD GSMImplementing procedure schematic diagram;
Fig. 6 is in the embodiment of the present invention, a kind of possible structural representation of jamming power measurement mechanism.
Detailed description of the invention
In order to realize in the time that TDD GSM normally moves, measure in real time this TDD mobile communication systemThe object of the jamming power of interfering signal in system, the embodiment of the present invention provides a kind of jamming power measuring methodAnd device.
Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, should be appreciated that this placeThe preferred embodiment of describing, only for description and interpretation the present invention, is not intended to limit the present invention, and notIn the situation of conflict, the feature in embodiment and embodiment in the present invention can combine mutually.
The embodiment of the present invention is applicable to TD-SCDMA (TimeDivision-SynchronousCodeDivisionMultipleAccess, TD SDMA) and TD-LTE (TimeDivisionLongTermEvolution, time-division Long Term Evolution) etc. time division duplex (TDD, TimeDivisionDuplexing)GSM.
As shown in Figure 1, the implementing procedure schematic diagram of the jamming power measuring method providing for the embodiment of the present invention,Comprise the steps:
S101, in the protection interval of the communication frame of TDD (time division duplex) GSM, monitoringThe arrival of default Measuring Time point;
S102, monitor Measuring Time point arrive time, measure this TDD GSM in this measurementThe jamming power of the interfering signal of time point.
In concrete enforcement, before the arrival of the default Measuring Time point of monitoring, also comprise:
Obtain working time and the operating frequency of TDD GSM;
According to the working time obtaining, carry out time synchronized with this TDD GSM; And
According to the operating frequency obtaining, carry out Frequency Synchronization with this TDD GSM.
Concrete, jamming power measurement mechanism obtains working time and the work of this TDD GSMFrequency, and while adjusting the working time of jamming power measurement mechanism and the work of this TDD GSMBetween consistent, and adjust the operating frequency of measurement mechanism and the maintenance of the operating frequency of TDD GSMUnanimously, thereby, the accuracy of the jamming power of the interfering signal that measurement mechanism measures ensured.
As shown in Figure 2 a, in TDD GSM, the frame structure schematic diagram of its communication frame. TDDThe frame structure of GSM is by descending time slot, protection interval (GP, GuardPeriod) time slot and upperRow time slot three part compositions. Wherein, the transmitting-receiving conversion that GP is uplink and downlink signals provides protection, and for usingFamily equipment (UE, UserEquipment) initially accesses uplink synchronous Timing Advance is provided, and prevents upper and lowerInterfering with each other between row signal, therefore, not signal transmission of protection interval. The end level difference of making an uproar in this three partLarger: in descending time slot, due to the impact of the high-power transmitting of other cell downlink, therefore, at the bottom of descending time slotThe lifting of making an uproar is larger; In ascending time slot, be subject to the impact of the up transmitting of other terminal, therefore, at the bottom of ascending time slot, make an uproarLifting is little compared with descending time slot; At protection interval, due to signal transmission not, therefore, protection in theoryAn Existential Space thermal noise in interval, still, because the front end at protection interval may be subject to other cell downlinkHigh-power transmitting produces the impact that Yue district disturbs, and causes the end level of making an uproar to have the lifting of certain amplitude, therefore,At the front end at protection interval, level is made an uproar higher than Space Thermal noise in the end; In the rear end at protection interval, the end level of making an uproarSubstantially suitable with Space Thermal noise, therefore, in the embodiment of the present invention, the Measuring Time point selection level of making an uproar the end of atThe rear end at minimum protection interval, to avoid transmitting power in TDD GSM to measurement resultImpact. As shown in Figure 2 b, in the embodiment of the present invention, power is made an uproar not in the end at the protection interval of selectingHigher than the make an uproar schematic diagram of time period of power threshold of the default end.
Due to the multiple choices that dispose of special time slot in TDD GSM frame structure, protection intervalDuration is conventionally between 0.07ms (millisecond)～0.7ms. In order to improve the precision of measurement result, specifically realShi Zhong, in protection interval, monitors the arrival of default Measuring Time point, comprising:
The power of making an uproar at the end at protection interval was not made an uproar higher than the default end in time period of power threshold, and monitoring is measuredThe arrival of time point.
Concrete, the power of making an uproar of the end when Space Thermal noise that can only exist with reference to TDD GSMThe end power threshold of making an uproar is set, and the end power of making an uproar in measuring and protecting interval, the merit of making an uproar at the end that measures protection intervalRate is not made an uproar in time period of power threshold higher than the end arranging, the arriving of the monitoring time point that monitoring sets in advanceReach. In concrete enforcement, can within the time period of selecting, set in advance Measuring Time point, in Measuring TimeWhen point arrives, measure the jamming power of the interfering signal of this TDD GSM.
In concrete enforcement, jamming power measuring method, can also comprise:
The jamming power that output measures; Or
Whether the jamming power that judgement measures exceedes default jamming power threshold value, if the determination result is YES,The jamming power that has information and measure is disturbed in output, if judged result is no, output is disturbedThere is not information.
Concrete, can be by measuring the jamming power output of interfering signal, specifically by following two kinds of modesOutput:
Mode one
Whether the jamming power of the interfering signal no matter measuring exceedes the receiver of TDD GSMThe power of the interfering signal that can tolerate, the jamming power of the interfering signal that all directly output measures.
Mode two
According to the jamming power threshold value setting in advance, whether the jamming power that first judgement measures exceedes this is doneDisturb power threshold, if so, whether interference is existed to be labeled as to disturb exist and export to disturb to exist and carryShow information and the jamming power measuring; If not, whether interference is existed and be labeled as interference and do not depositAnd output disturb and do not have an information.
In each communication frame due to TDD GSM transmission, all comprise protection interval, therefore thisBright embodiment can be applied in a certain continuous time section, to what exist in this TDD GSMThe jamming power of interfering signal is carried out continuous measurement, and according to the jamming power measuring, judges whether to depositIn interfering signal, and the interference characteristic of Analysis interference signal.
Based on this, jamming power measuring method, can also comprise:
According to the jamming power measuring, determine that this TDD GSM is in described Measuring Time sectionThe interference characteristic information of interfering signal;
The interference characteristic information that output is determined.
In concrete enforcement, can, in certain hour section, carry out interfering signal to TDD GSMThe measurement result statistical analysis that measures of jamming power, according to statistic analysis result, determine this TDDThe interference characteristic information of the interfering signal of GSM within this period, and the interference of exporting interfering signalCharacteristic information. Concrete, interference characteristic information comprises following at least one information: interference type information, dryDisturb probabilistic information and the interfering frequency cumulative distribution information of producing.
Wherein, interference type information comprises: interference continuously, periodically discontinuous interference and aperiodicity do not connectContinuous interference.
As shown in Figure 3 a, during for continuous interference, the jamming power distribution map measuring. Abscissa is illustrated inIn this time period, each Measuring Time point, ordinate is illustrated in the interference letter that each Measuring Time point measurement arrivesNumber jamming power. Interfering signal has following feature continuously: at each Measuring Time point, can detectInterfering signal, and the jamming power that measures this interfering signal exceedes the receiver of TDD GSMThe power of the interfering signal that can tolerate. May be two class interfering signals in this case, the one, continuous interferenceSignal; The 2nd, synchronize with Measuring Time point, discontinuous signal periodically. If do not carry out clock or otherIn the synchronous situation of mode, the probability of interfering signal and Measuring Time point precise synchronization is minimum, thick synchronous dryDisturbing signal will step-out within a period of time, the signal that therefore all can detect within one period of long periodGet rid of the possibility for periodicity discontinuous signal, should be continuous signal.
As shown in Figure 3 b, during for the discontinuous interference of periodicity, the jamming power distribution map measuring. Horizontal seatMark was illustrated in this time period, each Measuring Time point, and ordinate is illustrated in each Measuring Time point measurement and arrivesThe jamming power of interfering signal. Periodically discontinuous interfering signal has following feature: interfering signal dryDisturb power and not all exceed at each Measuring Time point that the receiver of TDD GSM can tolerateThe power of interfering signal, but there is certain periodicity, can judge that this interfering signal is as periodically not connectingContinuous signal.
As shown in Figure 3 c, during for the discontinuous interference of aperiodicity, the jamming power distribution map measuring. HorizontalCoordinates table was shown in this time period, each Measuring Time point, and ordinate is illustrated in each Measuring Time point measurementThe jamming power of the interfering signal arriving. The discontinuous interfering signal of aperiodicity has following feature: interfering signalAppearance do not possess temporal regularity, therefore this signal is aperiodicity discontinuous signal.
Meanwhile, also can be according to the measurement result side of obtaining the demand of the jamming power characteristic information to interfering signal,Draw average, cumulative distribution, the variance of jamming power, and disturb other multifrequency nature letters such as probability of happeningBreath. As shown in Figure 4, for the integral distribution curve schematic diagram of three types interfering signal, in Fig. 4, shownThe probability that various types of interfering signals may occur. According to the characteristic letter of the interfering frequency of these interfering signalsBreath is analytical interference further, and this is in close relations with concrete application, in the embodiment of the present invention notDo again more elaboration.
In concrete enforcement, can also be by the interference characteristic information output of interfering signal obtained above.
For a better understanding of the present invention, the enforcement to the embodiment of the present invention by specific embodiment belowJourney describes.
As shown in Figure 5, in the embodiment of the present invention, measure interfering signal in TDD GSMThe implementing procedure schematic diagram of jamming power, comprises the steps:
System time and the operating frequency of S501, acquisition TDD GSM, and adjust jamming powerThe time of measurement mechanism is consistent with system time and the operating frequency of TDD GSM with operating frequency;
S502, in the protection interval of the communication frame of this TDD GSM, monitoring Measuring Time pointArrival;
Concrete, the end power of making an uproar in measuring and protecting interval, the power of making an uproar the end of at is not higher than the power-threshold of making an uproar of the default endIn the time period of value, the arrival of monitoring Measuring Time point.
S503, in the jamming power of the interfering signal of this this TDD GSM of Measuring Time point measurement;
Whether the jamming power that S504, judgement measure exceedes default jamming power threshold value, if so, holdsRow step S505, if not, execution step S506;
The jamming power that has information and measure is disturbed in S505, output;
Concrete, whether interferences existed and be labeled as interference and exist and export, and export and measureJamming power.
S506, output are disturbed and are not had information.
If for sometime section in, all TDD GSM is done at each Measuring Time pointDisturb the jamming power of signal and measure, can also be further analyzed the measurement result obtaining, to determine interferenceThe interference characteristic information of signal.
Based on same inventive concept, a kind of jamming power measurement mechanism is also provided in the embodiment of the present invention, byThe principle of dealing with problems in this measurement mechanism is similar to jamming power measuring method, and therefore the enforcement of this device canWith the enforcement referring to method, repeat part and repeat no more.
As shown in Figure 6, a kind of possible structure of jamming power measurement mechanism providing for the embodiment of the present invention is shownIntention, comprising:
Monitoring means 601, for the protection interval of the communication frame at TDD GSM, monitoring is pre-If the arrival of Measuring Time point;
Measuring unit 602, in the time monitoring the arrival of Measuring Time point, measures this TDD mobile communication systemSystem is in the jamming power of the interfering signal of this Measuring Time point.
Concrete, monitoring means 601, specifically for making an uproar power not higher than the default end at the end at protection intervalMake an uproar in time period of power threshold, the arrival of monitoring Measuring Time point.
In concrete enforcement, jamming power measurement mechanism, can also comprise:
The first output unit, for exporting the jamming power measuring.
Judging unit, for judging whether the jamming power measuring exceedes default jamming power threshold value;
The second output unit, in the judged result of judging unit when being, output is disturbed and is had prompting letterBreath and the jamming power measuring;
The 3rd output unit, when being no in the judged result of judging unit, output is disturbed and is not had promptingInformation.
In concrete enforcement, jamming power measurement mechanism, can also comprise:
Obtain unit, for obtaining TDD mobile communication before the arrival at the default Measuring Time point of monitoringThe working time of system and operating frequency;
The first lock unit, for the working time obtaining according to acquisition unit, with this TDD mobile communicationSystem is carried out time synchronized;
The second lock unit, for the operating frequency obtaining according to acquisition unit, with this TDD mobile communicationSystem is carried out Frequency Synchronization.
In concrete enforcement, jamming power measurement mechanism, can also comprise:
Determining unit, for according to the jamming power measuring, determines that this TDD GSM is referring toThe interference characteristic information of the interfering signal in the section of fixing time;
The 4th output unit, the interference characteristic information of determining for exporting determining unit.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or meterCalculation machine program product. Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or knotClose the form of the embodiment of software and hardware aspect. And the present invention can adopt at one or more wherein bagsThe computer-usable storage medium that contains computer usable program code (include but not limited to magnetic disc store,CD-ROM, optical memory etc.) form of the upper computer program of implementing.
The present invention is that reference is according to the method for the embodiment of the present invention, equipment (system) and computer program productThe flow chart of product and/or block diagram are described. Should understand can be by computer program instructions realization flow figure and/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/Or the combination of square frame. Can provide these computer program instructions to all-purpose computer, special-purpose computer, embeddingThe processor of formula processor or other programmable data processing device, to produce a machine, makes by calculatingThe instruction that the processor of machine or other programmable data processing device is carried out produces for realizing at flow chart oneThe device of the function of specifying in square frame of individual flow process or multiple flow process and/or block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or other programmable data processing are establishedIn the standby computer-readable memory with ad hoc fashion work, make to be stored in this computer-readable memoryInstruction produce and comprise the manufacture of command device, this command device is realized in flow process or multiple of flow chartThe function of specifying in square frame of flow process and/or block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makeMust on computer or other programmable devices, carry out sequence of operations step to produce computer implemented placeReason, thus the instruction of carrying out on computer or other programmable devices is provided for realizing one of flow chartThe step of the function of specifying in square frame of flow process or multiple flow process and/or block diagram or multiple square frame.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain cicada baseThis creative concept, can make other change and amendment to these embodiment. So appended right is wantedAsk and be intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Jamming power measuring method and device that the embodiment of the present invention provides, when TDD GSM placeIn the time of normal operating condition, at the fixed time point at the protection interval of communication frame, in real time measurements interference signalJamming power, due to the not transmit communications signals of protection interval of communication frame, therefore, and in protection interval, TDDThe level of making an uproar at the bottom of GSM is lower, thus, realizes in the time that TDD GSM normally moves,Measure in real time the object of the jamming power of interfering signal in this TDD GSM.
Obviously, those skilled in the art can carry out various changes and modification and not depart from this present inventionBright spirit and scope. Like this, if of the present invention these amendment and modification belong to the claims in the present invention andWithin the scope of its equivalent technologies, the present invention be also intended to comprise these change and modification interior.
Claims (10)
1. a jamming power measuring method, is characterized in that, comprising:
In the protection interval of the communication frame of TDD GSM, monitor the arrival of default Measuring Time point, specifically comprise: the power of making an uproar at the end at protection interval was not made an uproar higher than the default end in time period of power threshold, the arrival of monitoring Measuring Time point, described Measuring Time point selection is in the rear end at described protection interval, wherein, the power threshold of making an uproar is the power setting of making an uproar the end during according to TDD GSM Existential Space thermal noise at the end;
In the time monitoring the arrival of Measuring Time point, measure the jamming power of described TDD GSM in the interfering signal of described Measuring Time point.
2. jamming power measuring method as claimed in claim 1, is characterized in that, also comprises:
The jamming power that output measures; Or
Whether the jamming power that judgement measures exceedes default jamming power threshold value, and if the determination result is YES, the jamming power that has information and measure is disturbed in output, if judged result is no, output is disturbed and do not had information.
3. jamming power measuring method as claimed in claim 1, is characterized in that, before the arrival of the default Measuring Time point of monitoring, also comprises:
Obtain working time and the operating frequency of described TDD GSM;
According to the working time obtaining, carry out time synchronized with described TDD GSM; And
According to the operating frequency obtaining, carry out Frequency Synchronization with described TDD GSM.
4. jamming power measuring method as claimed in claim 1, is characterized in that, also comprises:
According to the jamming power measuring, determine the at the appointed time interference characteristic information of interfering signal in section of described TDD GSM;
The described interference characteristic information that output is determined.
5. jamming power measuring method as claimed in claim 4, is characterized in that, described interference characteristic information comprises following at least one information: interference type information, interference produce probabilistic information and interfering frequency cumulative distribution information.
6. a jamming power measurement mechanism, is characterized in that, comprising:
Monitoring means, for the protection interval of the communication frame at TDD GSM, monitor the arrival of default Measuring Time point, do not make an uproar higher than the default end in time period of power threshold specifically for the power of making an uproar at the end at protection interval, the arrival of monitoring Measuring Time point, described Measuring Time point selection is in the rear end at described protection interval, and wherein, the end power threshold of making an uproar is the power setting of making an uproar the end during according to TDD GSM Existential Space thermal noise;
Measuring unit, in the time monitoring the arrival of Measuring Time point, measures the jamming power of described TDD GSM in the interfering signal of described Measuring Time point.
7. jamming power measurement mechanism as claimed in claim 6, is characterized in that, also comprises:
The first output unit, for exporting the jamming power measuring.
8. jamming power measurement mechanism as claimed in claim 6, is characterized in that, also comprises:
Judging unit, for judging whether the jamming power measuring exceedes default jamming power threshold value;
The second output unit, in the judged result of described judging unit when being, the jamming power that has information and measure is disturbed in output;
The 3rd output unit, when being no in the judged result of described judging unit, output is disturbed and is not had information.
9. jamming power measurement mechanism as claimed in claim 6, is characterized in that, also comprises:
Obtain unit, before the arrival at the default Measuring Time point of monitoring, obtain working time and the operating frequency of described TDD GSM;
The first lock unit, for according to the working time obtaining, carries out time synchronized with described TDD GSM;
The second lock unit, for according to the operating frequency obtaining, carries out Frequency Synchronization with described TDD GSM.
10. jamming power measurement mechanism as claimed in claim 6, is characterized in that, also comprises:
Determining unit, for according to the jamming power that measures, determines the at the appointed time interference characteristic information of the interfering signal in section of described TDD GSM;
The 4th output unit, for exporting the described interference characteristic information of determining.
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| CN101282553A (en) * | 2007-04-05 | 2008-10-08 | 大唐移动通信设备有限公司 | Method for improving combined detection performance, baseband signal processor and base station |
| CN101611574A (en) * | 2007-02-23 | 2009-12-23 | 艾利森电话股份有限公司 | Be used for strengthening the method and apparatus of the performance of cellular wireless TDD system |
| CN101889407A (en) * | 2007-12-05 | 2010-11-17 | 罗伯特.博世有限公司 | Method and device for receiving a data signal using a plurality of antennae |
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| GB2429875B (en) * | 2005-09-05 | 2008-03-12 | Toshiba Res Europ Ltd | Improved broadband carrier frequency selection |
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| CN101611574A (en) * | 2007-02-23 | 2009-12-23 | 艾利森电话股份有限公司 | Be used for strengthening the method and apparatus of the performance of cellular wireless TDD system |
| CN101282553A (en) * | 2007-04-05 | 2008-10-08 | 大唐移动通信设备有限公司 | Method for improving combined detection performance, baseband signal processor and base station |
| CN101889407A (en) * | 2007-12-05 | 2010-11-17 | 罗伯特.博世有限公司 | Method and device for receiving a data signal using a plurality of antennae |
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