CN101183914B - Method and device for detecting diversity reception performance - Google Patents
Method and device for detecting diversity reception performance Download PDFInfo
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Abstract
The invention discloses a detection method for the diversity reception, comprising: a first emission power signal of the signal source is at least divided into two paths; the signal simulating frequency of the first path is transmitted to the non-diversity communication equipment after selective fading; the signal simulating of the second path is directly transmitted to the non-diversity communication equipment without fading, and the signal receiving magnitude of the non-diversity communication equipment is detected; the second emission power signal of the signal source is at least divided into two paths; the signal simulating frequency of the first path is transmitted to the diversity communication equipment after selective fading; the signal simulating of the second path is directly transmitted to the diversity communication equipment without fading, and the signal receiving magnitudes of the diversity communication equipment and the non-diversity communication equipment are the same; the power difference value of the first emission power and the second emission power of the signal source is calculated to get the diversity gain. The invention also discloses a detection device for the diversity reception. The invention has the advantages of not only detecting the diversity reception rapidly and conveniently, but also having low cost, being energy-saving and environment-friendly.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of method and apparatus that detects the diversity reception performance of communication equipment.
Background technology
At present, along with the fast development of mobile communication, the amount of information of telex network is increasing, and signal rate constantly increases.WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) arises thus, because WCDMA adopts HSDPA (High Speed Downlink PackageAccess, high-speed downlink packet inserts) technology, descending digit rate can reach 10Mb/S.Meanwhile, the user also improves day by day to the requirement of communication transmission quality, how to guarantee that signal receiving quality and communication reliability have become one of this area research break through direction.Actual wireless communication can run into various abominable communication environments and cause signal fadeout in useful signal transmits by the space, and various for this reason anti-fading technology are applied on the portable terminal, and diversity reception is exactly the technology of wherein a kind of anti-spatial fading.But after increasing a certain technology, how to check improvement effect, become very important.
To the detection of (or claiming anti-fading ability) of the signal reception under the spatial fading situation, mainly be to come the virtual space decline to realize at present by the radio frequency fading simulator.This fading simulator mainly is to produce fading environment according to fading channel model, becomes the channel fading characteristic of decline when emulation comprises, and all multipath independent process.Fading channel model all has definition in each test specification, when doing decline emulation, the model of institute's foundation and the parameter that needs to be provided with all are identical to all fading simulators.But the simulation performance difference of different fading simulators, the channel that the instrument emulation that has is come out does not also meet theoretical decline distribution, as Rayleigh fading, this decline of Lay etc.Though radio frequency fading simulator general performance is better, price is very expensive.
Also have the base band fading simulator in addition, it comprises two types: a kind of baseband signal interface that provides is applicable to the base band development; Also have a kind of decline emulation to be integrated in the signal source, the test signal function that signal source provides is limited.The simulation performance aspect is the nonreal time simulation fading characteristic, must be through precomputation before the emulation.Decline multipath more for a long time, and the randomness of channel fading reduces, and shows that the result of emulation repeats fast.These two kinds of base band fading simulators are done decline during emulation, can not with business terminal/test terminal/standard signal source interface, thereby be not suitable for system level testing.Such base band decline emulation just is used for to limitation the error rate test under the decline situation, detections such as switching under the decline situation that can't support to require in the 3G system, power control, and the price of base band fading simulator is also somewhat expensive simultaneously.
In summary, existing fading simulator obviously exists inconvenience and defective, so be necessary to be improved on reality is used.
Summary of the invention
One of purpose of the present invention is the method that detects diversity reception performance is provided, and this method not only can detect diversity reception performance easy, quickly, and with low cost, energy-conserving and environment-protective.
Two of purpose of the present invention is to provide a kind of device that detects diversity reception performance, and this device not only can detect diversity reception performance easy, quickly, and with low cost, energy-conserving and environment-protective.
In order to realize above-mentioned first purpose, the invention provides a kind of method that detects diversity reception performance, may further comprise the steps:
A, the signal of signal source being sent with first transmitting power by splitter are divided into two paths at least, and the signal imitation frequency selective fading in first path sends to the non diversity communication apparatus with signal by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and signal is directly sent to the non diversity communication apparatus, and detects the signal receiving quality value of described non diversity communication apparatus;
B, the signal of signal source being sent with second transmitting power by splitter are divided into two paths at least, the signal imitation frequency selective fading in first path, and this signal sends to the diversity communication apparatus by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and this signal directly sends to the diversity communication apparatus, and makes that the signal receiving quality value of detected described diversity communication apparatus is identical with the signal receiving quality value of described non diversity communication apparatus;
C, first transmitting power of calculating described signal source and the power difference of second transmitting power are with the diversity gain of described power difference as this diversity communication apparatus.
The method according to this invention, the signal in first path sends to the non diversity communication apparatus by first slave antenna that is connected with described duplexer in the described steps A, and the signal in second path sends to the non diversity communication apparatus by second slave antenna that is connected with described splitter;
The signal in first path sends to the diversity communication apparatus by first slave antenna that is connected with described duplexer among the described step B, and the signal in second path sends to the diversity communication apparatus by second slave antenna that is connected with described splitter.
The method according to this invention, among the described step B: if the polarization diversity of diversity communication apparatus band, the polarised direction of the main antenna of then described first slave antenna and diversity communication apparatus is consistent, and the polarised direction of the slave antenna of described second slave antenna and diversity communication apparatus is consistent;
If the diversity communication apparatus is not with polarization diversity, the polarised direction of the antenna of then described first slave antenna, second slave antenna and diversity communication apparatus all is consistent, and first slave antenna more approaches diversity communication apparatus main antenna, and second slave antenna more approaches diversity communication apparatus auxiliary antenna.
The method according to this invention, the signal in first path sends to the main antenna interface of non diversity communication apparatus by first cable between described duplexer and the non diversity communication apparatus in the described steps A, and the signal in second path sends to the auxiliary antenna mouth of non diversity communication apparatus by second cable between described splitter and the non diversity communication apparatus;
The signal in first path sends to the diversity communication apparatus by first cable between described duplexer and the diversity communication apparatus among the described step B, and the signal in second path sends to the diversity communication apparatus by second cable between described splitter and the diversity communication apparatus.
The method according to this invention, described step B also comprises:
B1, the signal of signal source being sent with a certain transmitting power of using in the band limits by splitter are divided into two paths at least and send to the diversity communication apparatus, and detect the signal receiving quality value of described diversity communication apparatus;
B2, the transmitting power of described signal source is adjusted to second transmitting power, with the signal receiving quality value of the signal receiving quality value that detects the diversity communication apparatus and described non diversity communication apparatus identical till.
The method according to this invention, the signal receiving quality value of described diversity or non diversity communication apparatus provides channel quality indication, the error rate or Block Error Rate by comprehensive test instrument.
The method according to this invention, described diversity or non diversity communication apparatus are the communicating terminal with anti-frequency selective fading, have both had diversity reception, and can enable with or without diversity.
The present invention also provides a kind of method that detects diversity reception performance, may further comprise the steps:
A, the signal of signal source being sent with first transmitting power by splitter are divided into two paths at least, and the signal imitation frequency selective fading in first path sends to the diversity communication apparatus with signal by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and signal is directly sent to the diversity communication apparatus, and is detected the signal receiving quality value of described diversity communication apparatus by comprehensive test instrument;
B, the signal of signal source being sent with second transmitting power by splitter are divided into two paths at least, the signal imitation frequency selective fading in first path, and this signal sends to the non diversity communication apparatus by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and this signal directly sends to the non diversity communication apparatus, and makes that the signal receiving quality value of detected described non diversity communication apparatus is identical with the signal receiving quality value of described diversity communication apparatus;
C, first transmitting power of calculating described signal source and the power difference of second transmitting power are with the diversity gain of described power difference as this diversity communication apparatus.
The method according to this invention, described step B further comprises:
B1, splitter are sent signal source with a certain transmitting power of using in the band limits signal is divided into two paths at least and sends to the non diversity communication apparatus, and is detected the signal receiving quality value of described non diversity communication apparatus by comprehensive test instrument;
B2, the transmitting power of described signal source is adjusted to second transmitting power, with the signal receiving quality value of the signal receiving quality value that detects the non diversity communication apparatus and described diversity communication apparatus identical till.
In order to realize above-mentioned second purpose, the invention provides a kind of device that detects diversity reception performance, include:
Splitter, be used for the signal that signal source is sent is divided into two paths, the signal imitation frequency selective fading in first path, this signal sends to tested communication apparatus by frequency-selecting attenuator, duplexer, the signal imitation in second path declines, and this signal directly sends to tested communication apparatus;
The frequency-selecting attenuator is used for the signal that described splitter forwarding comes being decayed and sending to duplexer;
Duplexer is used to provide the bi-directional path of receiving and transmitting signal and receiving and transmitting signal is isolated, and wherein the signal from signal source is transmitted to tested communication apparatus through duplexer, and the upward signal of tested communication apparatus then is transmitted to signal source by duplexer.
According to device of the present invention, described frequency-selecting attenuator is in the receivable use band limits of tested communication apparatus, and the fading frequency of described frequency-selecting attenuator can be regulated continuously.
According to device of the present invention, described duplexer is connected with first slave antenna, and the signal in described first path sends to tested communication apparatus by this first slave antenna, and the upward signal of tested communication apparatus sends to duplexer by first slave antenna;
Described splitter is connected with second slave antenna, and the signal in described second path sends to tested communication apparatus by this second slave antenna.
According to device of the present invention, described duplexer is connected with tested communication apparatus by first cable, and the signal in described first path sends to tested communication apparatus by first cable, and the upward signal of tested communication apparatus sends to duplexer by first cable;
Described splitter is connected with tested communication apparatus by second cable, and the signal in second path sends to tested communication apparatus by second cable.
The signal that the present invention sends signal source is divided into two-way at least, the signal imitation frequency selective fading in first path, and the signal imitation in second path declines.Under the same communication quality, check signal source to first transmitting power of non diversity communication apparatus output and second transmitting power of exporting to the diversity communication apparatus respectively, the rated output difference draws diversity gain then.Thereby so the diversity reception performance that the present invention can simple, fast detection communication apparatus, and device forms by passive device is cheap, environmental protection is energy-conservation again.
Description of drawings
Fig. 1 is the structural representation that the present invention detects first embodiment of diversity reception performance device;
Fig. 2 is the structural representation that the present invention detects second embodiment of diversity reception performance device;
Fig. 3 is the flow chart that the present invention detects diversity reception performance method one embodiment.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The influence of fading that in wireless transmission, runs into for communication apparatus: from the angle of frequency-domain analysis, because channel width is less than signal bandwidth, the space transmission signals embodies irrelevant, so because of the space multipath fading makes each frequency component gain difference in the received signal, cause frequency selective fading, cause distorted signals.From the angle of time domain analysis, because the time delay of multipath transmisstion generation, greater than a chip time, delay path believes that sign indicating number is to not delay path letter sign indicating number generation ISI interference (Inter-Symbol Interference, intersymbol interference).The present invention is from frequency-domain analysis, at the communication apparatus that has diversity reception, detects its anti-fading effect (being diversity gain) under frequency frequency-selecting decline and Gaussian noise, and the present invention also can use for reference in other similar products.
Basic principle of the present invention is: the signal that apparatus of the present invention are sent signal source is divided into the common simulating multi-path status transmission of two-way at least, the signal imitation frequency selective fading in first path, and the signal imitation in second path declines.For detecting the signal reception of diversity communication equipment in frequency frequency-selecting decline, under the same communication quality, be identical CQI (Channel Quality Indication, the channel quality indication), BER (Bit Error Rate, bit error rate) or BLER (Block Error Rate, Block Error Rate) under the situation, check signal source to pass through this device respectively to first transmitting power of non diversity communication apparatus output and second transmitting power of exporting to the diversity communication apparatus, calculate two power differences then, the result is the improvement gain of diversity reception.Thereby can detect the signal reception of diversity communication apparatus, so that compare, analyze and rapid orientation problem with design object.
Fig. 1 detects the structural representation of first embodiment of diversity reception performance device for the present invention, and the device 10 of this detection diversity reception performance comprises splitter 11, frequency-selecting attenuator 12, duplexer 13 and two slave antennas 14 and 15 that connect by the radio frequency cable.The radiofrequency signal of comprehensive test instrument 20 (signal source) being sent by splitter 11 is divided into two-way, and the signal imitation frequency selective fading in first path is given tested communication apparatus 30 by splitter 11, frequency-selecting attenuator 12, duplexer 13 and antenna 15 radiation; The signal imitation in second path declines, and directly gives tested communication apparatus 30 by antenna 14 radiation by splitter 11.Checkout gear of the present invention is formed by passive device, and is not only cheap, and energy-conserving and environment-protective.
Described comprehensive test instrument 20 anolog base stations send the radiofrequency signal that has Gaussian noise to splitter 11, as the radiofrequency signal of AWGN (Additive White Gaussian Noise, additive white Gaussian noise).
Described frequency-selecting attenuator 12 is used for that described splitter 11 is transmitted the signal that comes and carries out the frequency-selecting decay and send to duplexer 13.This frequency-selecting attenuator 12 can be made of cavity body filter, and in tested communication apparatus 30 receivable use band limits, the fading frequency point of described frequency-selecting attenuator 12 can be regulated continuously.
Described duplexer 13 provides the signal bi-directional path and receiving and transmitting signal is isolated, wherein give tested communication apparatus 30 through duplexer 13 by antenna 15 radiation from the radiofrequency signal of comprehensive test instrument 20, the upward signal of tested communication apparatus 30 (as signal receiving quality values such as CQI), be transmitted to comprehensive test instrument 20 by antenna 15 by duplexer 13, to finish loopback.
Described antenna 14 is connected with splitter 11, and the signal in described second path is given tested communication apparatus 30 by antenna 14 radiation.Described antenna 15 is connected with duplexer 13, and the signal in described first path is given tested communication apparatus 30 by antenna 15 radiation, and the upward signal of tested communication apparatus 30 sends to duplexer 13 by antenna 15.
The communication apparatus (band diversity reception) of described tested communication apparatus 30 for having anti-frequency selective fading, this specification is the example explanation with the WCDMA terminal, but is not limited thereto.
Fig. 2 detects the structural representation of second embodiment of diversity reception performance device for the present invention, and itself and first embodiment difference are that the device of second embodiment does not have antenna.Splitter 11 among Fig. 2 is connected with tested communication apparatus 30 by cable 16, and the signal in second path sends to the auxiliary antenna mouth of tested communication apparatus 30 by cable 16; Duplexer 13 is connected with tested communication apparatus 30 by cable 17, the signal in described first path sends to the main antenna mouth of tested communication apparatus 30 by cable 17, and the upward signal of tested communication apparatus 30 sends to duplexer by cable 17, is transmitted to comprehensive test instrument 20 to finish loopback by duplexer 13 again.The upward signal of described tested communication apparatus 30 comprises the signal receiving quality value of tested communication apparatus 30.
The parameter that the present invention detects each parts in the device 10 of diversity reception performance is as follows:
Frequency-selecting attenuator 12 will satisfy the use frequency range, interface voltage standing-wave ratio＜1.8, and decay is about 28dB;
Two slave antennas 14 and 15 select to satisfy use frequency range, its interface voltage standing-wave ratio＜2.5, gain＞1dBi.
Fig. 3 detects the flow chart of the embodiment one of diversity reception performance method for the present invention, and this embodiment one adopts and sends the signal of first transmitting power and detect its signal receiving quality value to non diversity WCDMA terminal earlier; Send the signal of a certain transmitting power and detect its signal receiving quality value to diversity WCDMA terminal again; A certain transmitting power is adjusted to second transmitting power, till the signal receiving quality value of two kinds of terminals is identical; The difference of calculating first, second transmitting power is to draw diversity gain.May further comprise the steps:
Step S001, comprehensive test instrument send the signal of first transmitting power.Described first transmitting power is in the receivable use band limits of non diversity terminal (the WCDMA terminal of single antenna), and the comprehensive test instrument anolog base station sends the signal of communication that has AWGN to splitter.Comprehensive test instrument detects requirement by CQI under the AWGN in the 3GPP standard, and instrument is set, and additional Insertion Loss will be provided with middle deduction in instrument.
Step S002, splitter are divided into two paths at least with the signal of first transmitting power and send to the non diversity terminal.The signal imitation frequency selective fading in first path sends to the non diversity terminal with signal by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and signal is directly sent to the non diversity terminal.In this step, the signal in first path sends to the non diversity terminal by first slave antenna (antenna 15) that is connected with duplexer, referring to shown in Figure 1, the signal in second path can send to the non diversity terminal by second slave antenna (antenna 14) that is connected with splitter, described two slave antennas can also be replaced each other, promptly first slave antenna sends the signal in second path, and second slave antenna sends the signal in first path.Adopt the scheme of antenna,, set up the loop link to call out the WCDMA terminal by the space coupling.Alternately, the signal in first path sends to the non diversity terminal by the first radio frequency cable (cable 17) between duplexer and the non diversity terminal in this step, referring to shown in Figure 2, the signal in second path sends to the non diversity terminal by the second radio frequency cable (cable 16) between splitter and the non diversity terminal.
Step S003, the signal receiving quality value of detection non diversity terminal.Described non diversity terminal is received after the radiofrequency signal that first transmitting power sends by inter-process and RAKE reception, equilibrium treatment etc. and is demodulated signal, and detection signal quality of reception value, and this signal receiving quality value is reported comprehensive test instrument.The signal receiving quality value that present embodiment detects is CQI, and its test mode is pressed the 3GPP34.121 standard.Certainly also be chosen as BER or BLER at the circuit domain examination criteria, the same establishing criteria of detection method.For the WCDMA terminal that has the HSDPA technology, adopting and detecting criterion is that CQI is convenient to detect.Because present various fading simulator only is a kind of virtual space decline, limitation is separately arranged.Its testing result will compare with testing result under the real network sometimes.The WCDMA terminal that has the HSDPA technology, uplink and downlink signals speed difference.In real network backstage RNC (Radio Network Controller, radio network controller) side, be easy to obtain the CQI report of WCDMA terminal to report.
Step S004, comprehensive test instrument send the signal of a certain transmitting power.The a certain transmitting power of this comprehensive test instrument is in the receivable use band limits of diversity terminal, and this signal is the signal of communication of band AWGN.
Step S005, splitter are divided into two paths with the signal of described a certain transmitting power and send to the diversity terminal.The signal imitation frequency selective fading in first path, this signal sends to the diversity terminal by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and this signal directly sends to the diversity terminal.In this step, the signal in first path sends to the diversity terminal by first slave antenna (antenna 15) that is connected with duplexer, and referring to shown in Figure 1, the signal in second path sends to the diversity terminal by second slave antenna (antenna 14) that is connected with splitter.If the polarization diversity of diversity terminal band, the polarised direction of the main antenna of then described first slave antenna and diversity terminal is consistent, and the polarised direction of the slave antenna of described second slave antenna and diversity terminal is consistent; If the diversity terminal is not with polarization diversity (only depending on two antenna diversities to receive), the polarised direction of the antenna of then described first slave antenna, second slave antenna and diversity terminal all is consistent.Alternately, the signal in first path sends to the diversity terminal by the first radio frequency cable (cable 17) between described duplexer and the diversity communication apparatus in this step, referring to shown in Figure 2, the signal in second path sends to the diversity terminal by the second radio frequency cable (cable 16) between described splitter and the diversity terminal.
Step S006, the signal receiving quality value of detection diversity terminal.Described diversity terminal is received after the radiofrequency signal that a certain transmitting power sends by inter-process and RAKE reception, equilibrium treatment etc. and is demodulated signal, and detection signal quality of reception value.The signal receiving quality value that present embodiment detects is CQI, and its test mode is pressed the 3GPP34.121 standard.Certainly also be chosen as BER or BLER at the circuit domain examination criteria, the same establishing criteria of detection method.After the diversity terminal detects CQI, this CQI is reported comprehensive test instrument by duplexer.
Step S007, the transmitting power of adjustment comprehensive test instrument.Here must reduce the comprehensive test instrument signal transmission power, and adjusted AWGN signal is sent.
Step S008, splitter are divided into two paths with adjusted signal and send to the diversity terminal, and itself and step S005 are similar.
Step S009 continue to detect the signal receiving quality value of diversity terminal, and itself and step S006 are similar.
Step S010 judges whether that the signal receiving quality value of diversity terminal is identical with the signal receiving quality value of non diversity terminal.In the present embodiment, the transmitting power of comprehensive test instrument is constantly adjusted, till the CQI of the CQI that detects the diversity terminal and described non diversity terminal is identical.
Step S011 writes down second transmitting power.When the CQI of diversity terminal equated with the CQI of non diversity terminal, comprehensive test instrument was second transmitting power to the power of the transmission signal of diversity terminal, and this second transmitting power is noted.
Step S012 calculates the power difference of first transmitting power and second transmitting power, is worth the diversity gain of diversity terminal according to this difference power.Diversity gain is big more, and the signal reception under the anti-frequency selective fading is strong more.
In addition, for preventing external interference, all detect as above-mentioned all step 1 at shielded enclosure.
The embodiment two that the present invention detects the diversity reception performance method is: adopt to send the signal of first transmitting power and detect its signal receiving quality value to diversity WCDMA terminal earlier; Send the signal of a certain transmitting power and detect its signal receiving quality value to non diversity WCDMA terminal again; Adjusting this a certain transmitting power is second transmitting power, till the signal receiving quality value of two kinds of terminals is identical; The difference of calculating first, second transmitting power is to draw diversity gain.The method of embodiment two relevant steps and described embodiment one is basic identical, does not repeat them here.
The embodiment together diversity gain that obtains of embodiment two is different.Approaching more when two class values, the main antenna that can judge tested communication apparatus 30 declines with the big more anti-multipath that helps more of auxiliary antenna non-correlation.
Portable terminal with the WCDMA850MHz of a reality band HSDPA technology is that example is introduced embodiment below.With reference to the connection test environment of figure 1 band antenna,, its channel selection of comprehensive test instrument descending 4407 is set by the 3GPP standard A WGN requirement of test CQI down; Frequency of fadings is selected 881.4MHz.
Comprehensive test instrument is called out by the space coupling the non diversity dut terminal, sets up the loop link.The CQI value of test non diversity dut terminal this moment.
Comprehensive test instrument is called out by the space coupling the diversity dut terminal, sets up the loop link.The CQI value of test diversity dut terminal this moment.
Adjust the comprehensive test instrument transmitting power, till the CQI value that makes the diversity dut terminal is identical with the CQI value of non diversity dut terminal, write down second transmitting power of comprehensive test instrument at this moment.The difference of first transmitting power of comprehensive test instrument was tested diversity gain when it was tested with the non diversity dut terminal.
Adopt the method for the invention and device, empirical tests is with the test that has now under actual WCDMA (having the HSDPA technology) networking, and its diversity gain is basically identical as a result.
In summary, the invention provides a kind of method and apparatus of diversity reception performance of simple, fast detection communication apparatus, and cheap, environmental protection is energy-conservation again.It is primarily aimed at the WCDMA portable terminal that has diversity reception, detects its signal reception under frequency selective fading and Gaussian noise, the convenient diversity gain that calculates directly perceived, thereby with quick positioning question.
Certainly; the present invention also can have other various embodiments; make up with antenna with the frequency-selecting attenuator as splitter; another road is that splitter is with duplexer and combination of antennas; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (11)
1. a method that detects diversity reception performance is characterized in that, may further comprise the steps:
A, the signal of signal source being sent with first transmitting power by splitter are divided into two paths at least, and the signal imitation frequency selective fading in first path sends to the non diversity communication apparatus with signal by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and signal is directly sent to the non diversity communication apparatus, and detects the signal receiving quality value of described non diversity communication apparatus;
B, the signal of signal source being sent with second transmitting power by splitter are divided into two paths at least, the signal imitation frequency selective fading in first path, and this signal sends to the diversity communication apparatus by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and this signal directly sends to the diversity communication apparatus, and makes that the signal receiving quality value of detected described diversity communication apparatus is identical with the signal receiving quality value of described non diversity communication apparatus;
C, first transmitting power of calculating described signal source and the power difference of second transmitting power are with the diversity gain of described power difference as this diversity communication apparatus.
2. method according to claim 1, it is characterized in that, the signal in first path sends to the non diversity communication apparatus by first slave antenna that is connected with described duplexer in the described steps A, and the signal in second path sends to the non diversity communication apparatus by second slave antenna that is connected with described splitter;
The signal in first path sends to the diversity communication apparatus by first slave antenna that is connected with described duplexer among the described step B, and the signal in second path sends to the diversity communication apparatus by second slave antenna that is connected with described splitter.
3. method according to claim 2 is characterized in that, among the described step B:
If the polarization diversity of diversity communication apparatus band, the polarised direction of the main antenna of then described first slave antenna and diversity communication apparatus is consistent, and the polarised direction of the slave antenna of described second slave antenna and diversity communication apparatus is consistent;
If the diversity communication apparatus is not with polarization diversity, the polarised direction of the antenna of then described first slave antenna, second slave antenna and diversity communication apparatus all is consistent, and first slave antenna more approaches diversity communication apparatus main antenna, and second slave antenna more approaches diversity communication apparatus auxiliary antenna.
4. method according to claim 1, it is characterized in that, the signal in first path sends to the main antenna interface of non diversity communication apparatus by first cable between described duplexer and the non diversity communication apparatus in the described steps A, and the signal in second path sends to the auxiliary antenna mouth of non diversity communication apparatus by second cable between described splitter and the non diversity communication apparatus;
The signal in first path sends to the diversity communication apparatus by first cable between described duplexer and the diversity communication apparatus among the described step B, and the signal in second path sends to the diversity communication apparatus by second cable between described splitter and the diversity communication apparatus.
5. method according to claim 1 is characterized in that, described step B also comprises:
B1, the signal of signal source being sent with a certain transmitting power of using in the band limits by splitter are divided into two paths at least and send to the diversity communication apparatus, and detect the signal receiving quality value of described diversity communication apparatus;
B2, the transmitting power of described signal source is adjusted to second transmitting power, with the signal receiving quality value of the signal receiving quality value that detects the diversity communication apparatus and described non diversity communication apparatus identical till.
6. a method that detects diversity reception performance is characterized in that, may further comprise the steps:
A, the signal of signal source being sent with first transmitting power by splitter are divided into two paths at least, and the signal imitation frequency selective fading in first path sends to the diversity communication apparatus with signal by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and signal is directly sent to the diversity communication apparatus, and is detected the signal receiving quality value of described diversity communication apparatus by comprehensive test instrument;
B, the signal of signal source being sent with second transmitting power by splitter are divided into two paths at least, the signal imitation frequency selective fading in first path, and this signal sends to the non diversity communication apparatus by frequency-selecting attenuator, duplexer; The signal imitation in second path declines, and this signal directly sends to the non diversity communication apparatus, and makes that the signal receiving quality value of detected described non diversity communication apparatus is identical with the signal receiving quality value of described diversity communication apparatus;
C, first transmitting power of calculating described signal source and the power difference of second transmitting power are with the diversity gain of described power difference as this diversity communication apparatus.
7. method according to claim 6 is characterized in that, described step B further comprises:
B1, splitter are sent signal source with a certain transmitting power of using in the band limits signal is divided into two paths at least and sends to the non diversity communication apparatus, and is detected the signal receiving quality value of described non diversity communication apparatus by comprehensive test instrument;
B2, the transmitting power of described signal source is adjusted to second transmitting power, with the signal receiving quality value of the signal receiving quality value that detects the non diversity communication apparatus and described diversity communication apparatus identical till.
8. a device that detects diversity reception performance is characterized in that, includes:
Splitter, be used for the signal that signal source is sent is divided into two paths, the signal imitation frequency selective fading in first path, this signal sends to tested communication apparatus by frequency-selecting attenuator, duplexer, the signal imitation in second path declines, and this signal directly sends to tested communication apparatus;
The frequency-selecting attenuator is used for the signal that described splitter forwarding comes being decayed and sending to duplexer;
Duplexer is used to provide the bi-directional path of receiving and transmitting signal and receiving and transmitting signal is isolated, and wherein the signal from signal source is transmitted to tested communication apparatus through duplexer, and the upward signal of tested communication apparatus then is transmitted to signal source by duplexer.
9. device according to claim 8 is characterized in that, described frequency-selecting attenuator is in the receivable use band limits of tested communication apparatus, and the fading frequency of described frequency-selecting attenuator can be regulated continuously.
10. device according to claim 8, it is characterized in that, described duplexer is connected with first slave antenna, and the signal in described first path sends to tested communication apparatus by this first slave antenna, and the upward signal of tested communication apparatus sends to duplexer by first slave antenna;
Described splitter is connected with second slave antenna, and the signal in described second path sends to tested communication apparatus by this second slave antenna.
11. device according to claim 8, it is characterized in that, described duplexer is connected with tested communication apparatus by first cable, and the signal in described first path sends to tested communication apparatus by first cable, and the upward signal of tested communication apparatus sends to duplexer by first cable;
Described splitter is connected with tested communication apparatus by second cable, and the signal in second path sends to tested communication apparatus by second cable.
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| CN103516409B (en) * | 2012-06-29 | 2016-12-28 | 华为技术有限公司 | The method and apparatus of detection multi-path-apparatus performance |
| CN105791498B (en) * | 2016-03-02 | 2018-09-21 | 广东欧珀移动通信有限公司 | Mobile phone radio frequency performance test methods |
| CN105933051B (en) * | 2016-04-06 | 2019-03-22 | Oppo广东移动通信有限公司 | Antenna system and its method for testing performance and device, mobile terminal |
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| CN1795687A (en) * | 2003-06-10 | 2006-06-28 | 摩托罗拉公司 | Diversity control in wireless communications devices and methods |
| CN1812285A (en) * | 2005-01-30 | 2006-08-02 | 中兴通讯股份有限公司 | Down link power balancing method under macro diversity status |
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| CN1795687A (en) * | 2003-06-10 | 2006-06-28 | 摩托罗拉公司 | Diversity control in wireless communications devices and methods |
| CN1812285A (en) * | 2005-01-30 | 2006-08-02 | 中兴通讯股份有限公司 | Down link power balancing method under macro diversity status |
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