CN101848016A - Diversity combining method and device - Google Patents
Diversity combining method and device Download PDFInfo
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- CN101848016A CN101848016A CN201010171507A CN201010171507A CN101848016A CN 101848016 A CN101848016 A CN 101848016A CN 201010171507 A CN201010171507 A CN 201010171507A CN 201010171507 A CN201010171507 A CN 201010171507A CN 101848016 A CN101848016 A CN 101848016A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/0874—Hybrid systems, i.e. switching and combining using subgroups of receive antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention applies to the field of wireless mobile communications, and provides a diversity combining method and a device. The method comprises the following steps: step A, recognizing at least one branch signal from signals received by a receiver; step B, according to the input threshold value and the output threshold value of the preset performance index, selecting a branch signal that the corresponding performance index meets the preset selection rule; and step C, combining all selected branch signals. In the embodiment of the invention, according to the input threshold value and the output threshold value of the preset performance index, a branch signal that the corresponding performance index meets the preset selection rule is selected, and all selected branch signals are combined so as to realize the diversity combining method; and the method can reduce the power consumption of the receiver, and is particularly suitable for the situation that the receiver is of a wireless mobile terminal.
Description
Technical field
The invention belongs to the wireless mobile communications field, relate in particular to diversity combining method and device.
Background technology
In mobile communication system, signal can be direct projection, reflection or diffraction etc. from propagation path end to end, and unlike signal is because the distance in each path of passing through is different so, thus the time of advent difference, phase place is also just different.A plurality of signals of out of phase are at the receiver superposition, may strengthen (for example under the identical situation of direction) because of superposition, also may weaken (for example under the opposite situation of direction) because of superposition, make the amplitude of received signal sharply to change, form multipath fading.Multipath fading can reduce obtainable available signal power and increase the influence of disturbing, make the received signal of receiver produce distortion, waveform broadening, waveform is overlapping and distortion, even cause the output of communication system demodulator a large amount of mistakes to occur, so that can not communicate by letter fully.In the mobile communication of reality, except multipath fading, also has shadow fading.Stop that when what signal was subjected to high-lager building (for example travelling carriage move to the building that deviates from the base station in face of) or hypsography etc. the signal amplitude that receives will reduce.In addition, the variation of meteorological condition etc. also all influences the propagation of signal, and the signal amplitude and the phase place that receive are changed.These all are the exclusive characteristics of mobile channel, and it has brought adverse influence to mobile communication.
Adopt diversity technique, the information that receiver uses a plurality of copies to comprise can be more correct recovers former transmission signal, and it comprises two aspects: the one, disperse transmission, make receiver can obtain a plurality of statistics independently, carry the fading signal of same information; The 2nd, focus on, promptly a plurality of statistics that receiver is received independently fading signal merge to reduce the influence of decline.Like this, can improve the performance of communication system, reduction shadow fading has to a certain degree improved the influence that multipath disturbs significantly.
In summary, there are two kinds of typical methods to can be L independent fading signal, i.e. L bar branch road that receiver provides the signal that carries identical information.
A kind of method is to adopt time diversity, and the signal that promptly carries identical information sends on L different time-gap, and the interval of adjacent time-slots must be equal to or greater than the coherence time of channel, carries L independent decline component of the signal of identical information with acquisition.
Another kind is to adopt space diversity, promptly adopts multiple antenna.For example, can adopt single transmitting antenna and Duo Gen reception antenna.Interval between antenna and the antenna must be enough far away, makes that the propagation delay of multipath component on antenna in the signal has very big difference.Usually require two distances between antenna, 10 wavelength of being separated by at least, to obtain independently fading signal.
The diversity Merge Scenarios then mainly is after having adopted above-mentioned several scheme to obtain the L bar to carry the separate branches of identical information, the Merge Scenarios that adopts at receiver.Because being the high specific of band threshold value output, existing diversity Merge Scenarios merges (Maximal Ratio Combining with Output Threshold, OT-MRC) scheme, this scheme is checked signal to noise ratio (the signal-to-noise ratio that estimates each bar branch road one by one, SNR), it is superposeed, up to the signal to noise ratio sum of preceding l bar branch road greater than default output threshold gamma
OT, this moment, receiver stopped to check, and adopted the method for MRC (Maximal RatioCombining) to merge to the preceding l bar branch road of estimating previously.But adopt this diversity Merge Scenarios, might also merge by very little branch road, make the power consumption height of receiver the signal to noise ratio that receives.Especially, when receiver is portable terminal, also can reduce the useful life of mobile terminal battery.
Summary of the invention
One object of the present invention is to solve the problem that prior art exists, and a kind of decomposition merging method is provided, and can reduce the power consumption of receiver.
The present invention is achieved in that a kind of diversity combining method, comprises the steps:
Steps A, receiver go out at least one branch signal with the signal recognition that receives;
Step B, according to the input threshold value of default capabilities index and output threshold value, choose the branch signal that the respective performances index satisfies default selection rule;
All branch signals that step C, merging are chosen.
Another object of the present invention is to solve the problem that prior art exists, and provides a kind of diversity to merge device, can reduce the power consumption of receiver, and described device comprises:
The signal recognition unit, the signal recognition that is used for receiving goes out at least one branch signal;
Branch signal is chosen the unit, is used for input threshold value and output threshold value according to the default capabilities index, chooses the branch signal that the respective performances index satisfies default selection rule; And
The signal merge cells is used to merge described branch signal and chooses all selected branch signals of unit.
A further object of the present invention is to solve the problem that prior art exists, and a kind of decomposition merging method is provided, and can reduce the power consumption of receiver, and this method comprises the steps:
The input threshold value of the signal to noise ratio that A, basis are preset and output threshold value are chosen the antenna branch signal that the signal to noise ratio that receives satisfies default selection rule;
All antenna branch signals that B, merging are chosen.
Another purpose of the present invention is to solve the problem that prior art exists, and provides a kind of diversity to merge device, can reduce the power consumption of receiver, and described device comprises:
Tributary signal is chosen the unit, is used for input threshold value and output threshold value according to the default capabilities index, chooses the antenna branch signal that the respective performances index that receives satisfies default selection rule; And
The signal merge cells is used to merge described tributary signal and chooses all selected antenna branch signals of unit.
In the present invention, input threshold value and output threshold value according to the default capabilities index, choose the branch signal that the respective performances index satisfies default selection rule, merge all branch signals of choosing and realized a kind of diversity combining method, adopt this method can reduce the power consumption of receiver, be specially adapted to the situation that receiver is a mobile radio terminal.
Description of drawings
Fig. 1 is the realization flow figure of the diversity combining method that provides of the embodiment of the invention 1;
Fig. 2 is the realization flow figure of another diversity combining method of providing of the embodiment of the invention 1;
Fig. 3 is the realization flow figure of another diversity combining method that provides of the embodiment of the invention 1;
Fig. 4 is the analogous diagram of the relation of the diversity combining method that provides of the embodiment of the invention 1 between the error rate on the rayleigh fading channel and output threshold value;
Fig. 5 is the analogous diagram of the relation of the diversity combining method that provides of the embodiment of the invention 1 between the error rate on the rayleigh fading channel and input threshold value;
Fig. 6 is the diversity combining method that provides of the embodiment of the invention 1 and the analogous diagram of the bit error rate relation of OT-MRC method on rayleigh fading channel;
Fig. 7 is the analogous diagram of the diversity combining method that provides of the embodiment of the invention 1 and the average estimated path number relation of OT-MRC method on rayleigh fading channel;
Fig. 8 is the diversity combining method that provides of the embodiment of the invention 1 and the OT-MRC method average merge way number on rayleigh fading channel and the analogous diagram of the relation of article one branch road average signal-to-noise ratio;
Fig. 9 is the structural representation that the diversity that provides of the embodiment of the invention 2 merges device;
Figure 10 is the realization flow figure of the diversity combining method that provides of the embodiment of the invention 3;
Figure 11 is the realization flow figure of another diversity combining method of providing of the embodiment of the invention 3;
Figure 12 is the structural representation that the diversity that provides of the embodiment of the invention 4 merges device.
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.
In embodiments of the present invention,, choose the branch signal that the respective performances index satisfies default selection rule, merge all branch signals of choosing and realized a kind of diversity combining method according to the input threshold value and the output threshold value of default capabilities index.
Fig. 1 shows the realization flow of the diversity combining method that the embodiment of the invention provides, this method goes for code division multiple access (Code Division Multiple Access, CDMA) system, ultra broadband (Ultra-Wideband, UWB) wireless communication system such as system, be mainly used in the time domain processing, details are as follows:
In step S101, receiver goes out at least one branch signal with the signal recognition that receives;
In step S102,, choose the branch signal that the respective performances index satisfies default selection rule according to the input threshold value and the output threshold value of default capabilities index;
In step S103, merge all branch signals of choosing.
Wherein, the bar number of the branch signal that receiver picks out is relevant with the channel quantity that transmits signal, and the bar number of the branch signal that picks out is less than or equal to the channel quantity that transmits signal, is at least one; Default input threshold value is less than default output threshold value; Performance index can be signal to noise ratio, amplitude or the power etc. of signal.
Particularly, as shown in Figure 2, step S102 comprises:
Step S1021 chooses a branch signal, and whether the respective value of judging its respective performances index if then enter step S1022, otherwise enters step S1024 greater than default input threshold value;
In step S1022, choose this branch signal, upgrade the output valve of respective performances index correspondence;
In step S1023, judge that this output valve whether greater than default output threshold value, if then enter step S103, otherwise enters step S1024;
In step S1024, judge whether that all branch road inspecteds finish, if, then enter step S103, otherwise select next bar branch signal, enter step S1021.
In embodiments of the present invention, performance index are that example describes with the signal to noise ratio, and input threshold value and choosing of output threshold value will be according to channel circumstances, the average signal-to-noise ratio size of branch signal for example, this fading environment of Rayleigh fading or Lay etc.Generally speaking, select the input threshold value less than the branch road average signal-to-noise ratio, and the output threshold value is greater than the branch road average signal-to-noise ratio.Choosing of concrete input threshold value and output threshold value can be selected optimal value through after the test of many times.Certainly, when adopting amplitude or power etc. for performance index, choosing of input threshold value and output threshold value with similar during as performance index with signal to noise ratio, corresponding input threshold value also is less than the output threshold value, promptly Yu She input threshold value is less than the mean value of the respective performances index of all branch signals that pick out, default output threshold value is greater than the mean value of the respective performances index of all branch signals that pick out, and also can obtain by test of many times as for the input threshold value and the output threshold value of the best.
In embodiments of the present invention, receiver at first carries out the signal that receives time domain to be handled, and picks out L bar branch signal.Suppose that default input threshold value is γ
IT, default output threshold value is γ
OT, output signal-to-noise ratio is Γ, and receiver has obtained L bar branch signal, and (Signal to NoiseRatio SNR) is γ to the signal to noise ratio of each branch signal correspondence
1, γ
2... γ
L, as shown in Figure 3, the processing of this n bar branch signal being carried out above-mentioned steps S102 is specially:
In step S301, initialization, branch signal sign m is changed to 1, and output signal-to-noise ratio Γ is changed to 0;
Wherein, the span of branch signal sign is [1, L].
In step S302, receiver is estimated the signal to noise ratio γ of branch signal m
m, and judge γ
mWhether greater than γ
IT,, otherwise enter step S305 if then enter step S303;
In step S303, upgrade output signal-to-noise ratio, promptly upgrade Γ=Γ+γ
m
In step S304, judge that whether Γ is greater than γ
OT,, otherwise enter step S305 if then enter step S306;
In step S305, upgrade branch signal sign m=m+1, and judge that whether branch signal sign m is less than or equal to n, if then enter step S302, otherwise enters step S306;
In step S306, finish, enter step S103.
Like this, receiver at first compares the signal to noise ratio γ of branch signal 1
1Whether greater than γ
ITIf, γ
1Be less than or equal to γ
IT, the signal to noise ratio γ of next branch signal 2 relatively then
2If, γ
1Greater than γ
IT, then use this tributary signal, and upgrade output signal-to-noise ratio Γ=Γ+γ
1, judge that whether Γ is greater than γ
OTIf Γ is greater than γ
OTThen finish tributary signal and choose, if Γ is less than or equal to γ
OTThen compare next branch signal l
2Signal to noise ratio γ
2Like this, according to default input threshold gamma
ITWith the output threshold gamma
OTRepeat the process of choosing of this branch signal always, found or all branch signals are all checked and finished, remerge all branch signals of choosing up to the branch signal that satisfies condition.
Fig. 4 shows under BPSK (Binary phase shift keying) modulation system, the diversity combining method that adopts the embodiment of the invention to provide is exported changes of threshold and the error rate (BitError Rate on rayleigh fading channel, BER) Guan Xi analogous diagram, wherein, simulated conditions is: the branch signal bar that receiver identifies is counted n=5, the input threshold gamma
IT=0dB, the average signal-to-noise ratio of branch signal
Each branch signal is an independent distribution.As can be seen from Figure 4, work as γ
OT≤ γ
ITThe time, the error rate remains unchanged, and this is just illustrating γ
OTValue be greater than γ
ITWork as γ
OT＞γ
ITThe time, begin one section BER value with γ
OTIncrease and reduce, when output threshold gamma
OTWhen being increased to greater than 10dB, the BER value is constant substantially.This is because when the output threshold gamma
OTWhen increasing to a certain degree, the branch signal that satisfies two threshold conditions simultaneously finds.
Fig. 5 shows the output threshold gamma
OTDuring=10dB, the error rate (BER) and input threshold gamma
ITBetween relation, its simulated conditions is identical with the simulated conditions of Fig. 4.As seen from Figure 5, the error rate is with γ
ITIncrease and improve because the input threshold gamma
ITSet highly more, the number of branches that satisfies condition will be few more.
Diversity combining method and the error rate, the average estimated path of OT-MRC method on rayleigh fading channel that Fig. 6, Fig. 7 and Fig. 8 show the embodiment of the invention respectively to be provided are counted the relation that peace all merges number of path and article one branch road average signal-to-noise ratio.Import threshold gamma among the figure
IT=0dB, output threshold value=10dB, the branch signal bar is counted n=10, and the power time delay factor between branch road is 0.5.Fig. 6 explanation is with the increase of each branch road signal to noise ratio, and the method performance that the embodiment of the invention provides is better than the OT-MRC method, because with the increase of signal to noise ratio, the method that the embodiment of the invention provides can be chosen the branch road preferably that satisfies greater than the input threshold condition.Fig. 7 shows that the method average path estimative figure that the present invention proposes is greater than the OT-MRC method, obviously, because this method has been set the input threshold value, only find the branch road that satisfies condition just to merge, and the OT-MRC method is combined any branch road, just judges at output.Fig. 8 has illustrated that the path of this method merges number far below the OT-MRC method, and this is from having reduced the complexity that receiver is handled to a great extent.On the whole, the method that the embodiment of the invention provides is compared the OT-MRC method and has been reduced responsible property to a certain extent, has also improved performance simultaneously.
Fig. 9 shows the embodiment of the invention provides diversity to merge the structure of device, only shows the part relevant with the embodiment of the invention for convenience of explanation.
This device can be used for signal receivers such as the base station, portable terminal of wireless communication systems such as CDMA, UWB, can be to run on the unit that software unit, hardware cell or software and hardware in these signal receivers combine, this device is mainly used in the time domain processing, wherein:
Branch signal is chosen unit 902, according to the input threshold value and the output threshold value of default capabilities index, chooses the branch signal that the respective performances index satisfies default selection rule;
Signal merge cells 903 merges branch signal and chooses all selected branch signals of unit 902.
Wherein, the bar number of the branch signal that signal recognition unit 901 picks out is relevant with the channel quantity that transmits signal, and the bar number of the branch signal that picks out is less than or equal to the channel quantity that transmits signal, is at least one; The signal that signal recognition unit 901 receives is the signal in the wireless communication system, and wireless communication system can be cdma system, UWB system etc.; Default input threshold value is less than default output threshold value; Performance index can be signal to noise ratio, amplitude or the power etc. of signal.
Particularly, branch signal is chosen unit 902 and is carried out following operation:
Step S901 chooses a branch signal, and whether the respective value of judging its respective performances index if then enter step S902, otherwise enters step S904 greater than default input threshold value;
Step S902 chooses this branch signal, upgrades the output valve of respective performances index correspondence;
Step S903 judges that this output valve whether greater than default output threshold value, if then carry out the merging of branch signal by signal merge cells 903, otherwise enters step S904;
Step S904 judges whether that all branch road inspecteds finish, if then carry out the merging of branch signal by signal merge cells 903, otherwise selects next bar branch signal, enters step S901.
The detailed process that branch signal is chosen unit 902 performed processing repeats no more as described in example 1 above.
Embodiment 3
Figure 10 shows the realization flow figure of the diversity combining method that the embodiment of the invention provides, and this method goes for MIMO communication system etc., is mainly used in during the spatial domain handles, and details are as follows:
In step S1001,, choose the antenna branch signal that the signal to noise ratio that receives satisfies default selection rule according to the input threshold value and the output threshold value of default signal to noise ratio;
In step S1002, merge all antenna branch signals of choosing.
Wherein, the bar number of antenna branch signal is relevant with the antenna amount of receiver, is at least two; Default input threshold value is less than greater than default output threshold value.Performance index can be signal to noise ratio, amplitude or the power etc. of signal.
Particularly, as shown in figure 11, step S1001 comprises:
Step S10011 chooses a strip antenna tributary signal, and whether the respective value of judging its respective performances index if then enter step S10012, otherwise enters step S10014 greater than default input threshold value;
In step S10012, choose this strip antenna tributary signal, upgrade the output valve of respective performances index correspondence;
In step S10013, judge that this output valve whether greater than default output threshold value, if then enter step S1002, otherwise enters step S10014;
In step S10024, judge whether that all branch road inspecteds finish, if, then enter step 1002, otherwise select next bar branch signal, enter step S10011.
In embodiments of the present invention, performance index are that example describes with the signal to noise ratio, and input threshold value and choosing of output threshold value will be according to channel circumstances, the average signal-to-noise ratio size of antenna branch signal for example, this fading environment of Rayleigh fading or Lay etc.Generally speaking, we select to import threshold value less than the branch road average signal-to-noise ratio, and the output threshold value is greater than the branch road average signal-to-noise ratio.Choosing of concrete input threshold value and output threshold value can be selected optimal value through after the test of many times.In the processing of spatial domain, just obtaining the mode of antenna branch signal and time domain, to obtain branch signal in handling different, this point has been mentioned in background technology, but after obtaining each antenna branch signal, signal to noise ratio to the antenna branch signal estimates, the choosing of its input threshold value and output threshold value is similar in handling with time domain.The emulation trend that the diversity combining method that adopts the embodiment of the invention to provide obtains is identical with the emulation trend that arrives in the foregoing description 1, repeats no more.
Certainly, if employing amplitude, when power is judged as performance index, the choosing of its corresponding output threshold value is similar in also handling with time domain.
Figure 12 shows the embodiment of the invention provides diversity to merge the structure of device, only shows the part relevant with the embodiment of the invention for convenience of explanation.
It can be to run on the unit that software unit, hardware cell or software and hardware in these signal receivers combine that this device can be used for signal receiver such as the base station, portable terminal of wireless communication systems such as MIMO, this device is mainly used in the processing of spatial domain, wherein:
Tributary signal is chosen unit 121, according to the input threshold value and the output threshold value of default capabilities index, chooses the antenna branch signal that the respective performances index that receives satisfies default selection rule;
Signal merge cells 122 merges tributary signal and chooses all selected antenna branch signals of unit 121.
Wherein, it is relevant with antenna amount that tributary signal is chosen the bar number of the antenna branch signal that unit 121 receives, and is at least one; Default input threshold value is less than default output threshold value; Performance index can be signal to noise ratio, amplitude or the power etc. of signal.
Particularly, tributary signal is chosen unit 121 and is carried out following operation:
Step S121 chooses a strip antenna tributary signal, and whether the respective value of judging its respective performances index if then enter step S122, otherwise enters step S124 greater than default input threshold value;
In step S122, choose this strip antenna tributary signal, upgrade the output valve of respective performances index correspondence;
In step S123, judge that this output valve whether greater than default output threshold value, if then carry out the merging of antenna branch signal by signal merge cells 122, otherwise enters step S124;
In step S124, judge whether that all branch road inspecteds finish, if then carry out the merging of antenna branch signal, otherwise select next bar branch signal by signal merge cells 122, enter step S121.
The detailed process that tributary signal is chosen unit 121 performed processing repeats no more as described in example 3 above.
In invention, input threshold value and output threshold value according to the default capabilities index, choose the branch signal that the respective performances index satisfies default selection rule, merge all branch signals of choosing and realized a kind of diversity combining method, adopt this method can reduce the power consumption of receiver, be specially adapted to the situation that receiver is a mobile radio terminal.
One of ordinary skill in the art will appreciate that, realize that all or part of step in the foregoing description method is to instruct relevant hardware to finish by program, described program can be in being stored in a computer read/write memory medium, described storage medium is as ROM/RAM, disk, CD etc.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a diversity combining method is characterized in that, described method comprises the steps:
Steps A, receiver go out at least one branch signal with the signal recognition that receives;
Step B, according to the input threshold value of default capabilities index and output threshold value, choose the branch signal that the respective performances index satisfies default selection rule;
All branch signals that step C, merging are chosen.
2. the method for claim 1 is characterized in that, described performance index are signal to noise ratio, amplitude or the power of signal.
3. method as claimed in claim 1 or 2 is characterized in that, described step B comprises:
B1, choose a branch signal, whether the respective value of judging its respective performances index if then enter step B2, otherwise enters step B4 greater than default input threshold value;
B2, choose this branch signal, upgrade the output valve of respective performances index correspondence;
B3, judge that this output valve whether greater than default output threshold value, if then enter step C, otherwise enters step B4;
B4, judge whether that all branch road inspecteds finish, if, then enter step C, otherwise select next bar branch signal, enter step B1.
4. a diversity merges device, it is characterized in that described device comprises:
The signal recognition unit, the signal recognition that is used for receiving goes out at least one branch signal;
Branch signal is chosen the unit, is used for input threshold value and output threshold value according to the default capabilities index, chooses the branch signal that the respective performances index satisfies default selection rule; And
The signal merge cells is used to merge described branch signal and chooses all selected branch signals of unit.
5. device as claimed in claim 4 is characterized in that, described performance index are signal to noise ratio, amplitude or the power of signal, and described branch signal is chosen the unit and carried out following operation:
A1 chooses a branch signal, and whether the respective value of judging its respective performances index if then enter steps A 2, otherwise enters steps A 4 greater than default input threshold value;
A2 chooses this branch signal, upgrades the output valve of respective performances index correspondence;
A3 judges that this output valve whether greater than default output threshold value, if then carry out the merging of branch signal by described signal merge cells, otherwise enters steps A 4;
A4 judges whether that all branch road inspecteds finish, if then carry out the merging of branch signal by described signal merge cells, otherwise selects next bar branch signal, enters steps A 1.
6. a diversity combining method is characterized in that, described method comprises the steps:
The input threshold value of the signal to noise ratio that A, basis are preset and output threshold value are chosen the antenna branch signal that the signal to noise ratio that receives satisfies default selection rule;
All antenna branch signals that B, merging are chosen.
7. method as claimed in claim 6 is characterized in that, described performance index are signal to noise ratio, amplitude or the power of signal.
8. as claim 6 or 7 described methods, it is characterized in that described steps A comprises:
A1, choose a strip antenna tributary signal, whether the respective value of judging its respective performances index if then enter steps A 2, otherwise enters steps A 4 greater than default input threshold value;
A2, choose this strip antenna tributary signal, upgrade the output valve of respective performances index correspondence;
A3, judge that this output valve whether greater than default output threshold value, if then enter step B, otherwise enters steps A 4;
A4, judge whether that all branch road inspecteds finish, if, then enter step B, otherwise select next bar branch signal, enter steps A 1.
9. a diversity merges device, it is characterized in that described device comprises:
Tributary signal is chosen the unit, is used for input threshold value and output threshold value according to the default capabilities index, chooses the antenna branch signal that the respective performances index that receives satisfies default selection rule; And
The signal merge cells is used to merge described tributary signal and chooses all selected antenna branch signals of unit.
10. device as claimed in claim 9 is characterized in that, described performance index are signal to noise ratio, amplitude or the power of signal, and described tributary signal is chosen the unit and carried out following operation:
A1, choose a strip antenna tributary signal, whether the respective value of judging its respective performances index if then enter steps A 2, otherwise enters steps A 4 greater than default input threshold value;
A2, choose this strip antenna tributary signal, upgrade the output valve of respective performances index correspondence;
A3, judge that this output valve whether greater than default output threshold value, if then carry out the merging of antenna branch signal by described signal merge cells, otherwise enters steps A 4;
A4, judge whether that all branch road inspecteds finish,, otherwise select next bar branch signal, enter steps A 1 if then carry out the merging of antenna branch signal by described signal merge cells.
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| CN201010171507A CN101848016A (en) | 2010-05-13 | 2010-05-13 | Diversity combining method and device |
| PCT/CN2011/070030 WO2011140834A1 (en) | 2010-05-13 | 2011-01-04 | Method and device for diversity combining |
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| CN201010171507A CN101848016A (en) | 2010-05-13 | 2010-05-13 | Diversity combining method and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011140834A1 (en) * | 2010-05-13 | 2011-11-17 | 深圳大学 | Method and device for diversity combining |
| CN102325357A (en) * | 2011-07-05 | 2012-01-18 | 深圳大学 | Diversity combining method and system |
| WO2015066907A1 (en) * | 2013-11-10 | 2015-05-14 | 深圳大学 | Diversity combining method and system |
| CN105827298A (en) * | 2016-04-21 | 2016-08-03 | 哈尔滨工业大学 | Multi-site diversity receiving method under shortwave signal non-synchronous sampling condition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9066249B2 (en) * | 2012-03-07 | 2015-06-23 | Apple Inc. | Methods and apparatus for interference coordinated transmission and reception in wireless networks |
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| WO2009079813A1 (en) * | 2007-12-10 | 2009-07-02 | Utstarcom Telecom Co., Ltd. | A multi-antenna receiving diversity combining method and device with decoding feedback |
| WO2009110899A1 (en) * | 2008-03-05 | 2009-09-11 | Motia, Inc | Interference nullifying apparatus with agc and method of weighting and combining signals from antenna elements |
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| CN101848016A (en) * | 2010-05-13 | 2010-09-29 | 深圳大学 | Diversity combining method and device |
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| CN101154973A (en) * | 2006-09-28 | 2008-04-02 | 美国博通公司 | Method and system for achieving space and time diversity gain |
| WO2009079813A1 (en) * | 2007-12-10 | 2009-07-02 | Utstarcom Telecom Co., Ltd. | A multi-antenna receiving diversity combining method and device with decoding feedback |
| WO2009110899A1 (en) * | 2008-03-05 | 2009-09-11 | Motia, Inc | Interference nullifying apparatus with agc and method of weighting and combining signals from antenna elements |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011140834A1 (en) * | 2010-05-13 | 2011-11-17 | 深圳大学 | Method and device for diversity combining |
| CN102325357A (en) * | 2011-07-05 | 2012-01-18 | 深圳大学 | Diversity combining method and system |
| WO2015066907A1 (en) * | 2013-11-10 | 2015-05-14 | 深圳大学 | Diversity combining method and system |
| CN105827298A (en) * | 2016-04-21 | 2016-08-03 | 哈尔滨工业大学 | Multi-site diversity receiving method under shortwave signal non-synchronous sampling condition |
| CN105827298B (en) * | 2016-04-21 | 2018-11-02 | 哈尔滨工业大学 | Multistation location diversity receiving method under the conditions of short-wave signal non-synchronous sampling |
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