CN104467939B - A kind of method and device for optimizing multiple antennas and receiving - Google Patents
A kind of method and device for optimizing multiple antennas and receiving Download PDFInfo
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- CN104467939B CN104467939B CN201410820381.8A CN201410820381A CN104467939B CN 104467939 B CN104467939 B CN 104467939B CN 201410820381 A CN201410820381 A CN 201410820381A CN 104467939 B CN104467939 B CN 104467939B
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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
- H04B7/0802—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 antenna selection
- H04B7/0828—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 antenna selection with delay elements in antenna paths
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Abstract
The embodiment of the present invention provides a kind of method and device for optimizing multiple antennas and receiving, and wherein method includes：When multiple antennas receives data, determine that each antenna receives the time delay estimate of data；To each antenna received data, time delay estimate carries out delay compensation according to corresponding to；The data received to each antenna after progress delay compensation, carry out data merging.The present invention can eliminate the delay variation between the data that multiple antennas receives, and lift the performance of multi-aerial receiver.
Description
Technical field
The present invention relates to antenna technical field, and in particular to a kind of method and device for optimizing multiple antennas and receiving.
Background technology
With the development of the communication technology, the communication system that data are received using multiple antennas has been widely used, such as SIMO
(Single Input Multiple Out, single-input multiple output) system etc., the receiver use of these communication systems are more
Antenna receives the data that transmitter is sent, after received data carries out data merging between antenna, then to the data after merging
It is for data processing, can reach reduction data processing amount, the advantages of improving data processing speed.
Due to the different antennae of multiple antennas, received data is that same signal source is transmitted through different channels, therefore not
There can be time delay between the data received with antenna, the difference in channel quality that the time delay is mainly received data by each antenna is drawn
Rise；And when carrying out data merging to multiple antennas received data, if the time delay between the data that antenna receives is larger,
The delay inequality for the data that different antennae receives can make it that the accuracy of the result after data merging is relatively low so that data merge
Result afterwards has a strong impact on the performance of multi-aerial receiver.
It can be seen that, there is provided a kind of method for optimizing multiple antennas and receiving, to reduce the time delay between the data that multiple antennas receives
Difference, the accuracy of the result after data merge is improved, lift the performance of multi-aerial receiver, the technology for turning into urgent need to resolve is asked
Topic.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of method and device for optimizing multiple antennas and receiving, to reduce multiple antennas
Delay variation between the data received, the accuracy of the result after data merge is improved, lift the property of multi-aerial receiver
Energy.
To achieve the above object, the embodiment of the present invention provides following technical scheme：
A kind of method for optimizing multiple antennas and receiving, including
When multiple antennas receives data, determine that each antenna receives the time delay estimate of data；
To each antenna received data, time delay estimate carries out delay compensation according to corresponding to；
The data received to each antenna after progress delay compensation, carry out data merging.
Wherein, the time delay estimate for determining each antenna reception data includes：
Determine that each antenna receives the channel estimation in frequency domain value of data；
Determine that each antenna receives the time domain channel estimate corresponding to the channel estimation in frequency domain value of data；
The time domain channel estimate of data is received according to the cyclic shift value of setting and each antenna, data are received in each antenna
Determined in corresponding channel estimation window, the peak point position of each antenna received data；
By the peak point position of identified each antenna received data, the time delay for being defined as each antenna reception data is estimated
Evaluation.
Wherein, the channel estimation in frequency domain value for determining each antenna reception data includes：
For kthaRRoot antenna, it is determined that in kthaROn root antenna, the kth that receivesaVAt the channel response of root virtual-antenna
N number of reception sampled point channel estimation in frequency domain valueWherein, kthaRRoot antenna is any antenna in multiple antennas,
It is describedFor kthaRThe kth of root antennaaVThe channel estimation in frequency domain value of root virtual-antenna；
The time domain channel estimate for determining that each antenna is received corresponding to the channel estimation in frequency domain value of data includes：
For kthaRRoot antenna, pair channel estimation in frequency domain value determinedMake and N number of reception sampled point pair
The IDFT conversion for the length points answered, obtains corresponding time domain channel estimate, resulting time domain channel estimate is kthaRRoot
The kth of antennaaVThe time domain channel estimate of root virtual-antenna.
Wherein, described to each antenna received data, time delay estimate, which carries out delay compensation, according to corresponding to includes：
For each antenna, if the peak point position of identified antenna received data, positioned at corresponding channel estimation window
Right side, it is determined that the data delay that the antenna receives, the data correspondence received with the peak point position to the antenna
Time domain data, carry out delay compensation processing；
For each antenna, if the peak point position of identified antenna received data, positioned at corresponding channel estimation window
Left side, it is determined that the data that the antenna receives are advanced, the data correspondence received with the peak point position to the antenna
Time domain data, carry out lead compensation processing.
Wherein, methods described also includes：
For each antenna, if the peak point position of identified antenna received data, positioned at corresponding channel estimation window
Original position, it is determined that the data that the antenna receives do not have time delay, time domain corresponding to the data not received to the antenna
Data carry out delay compensation.
Wherein, the determination process of time domain data includes corresponding to the data that the antenna receives：
Antenna received data is AD converted, obtains numerical data；
Cyclic prefix CP is removed to the numerical data；
FFT is carried out to the numerical data after removal CP；
Frequency domain data after FFT is converted into time domain data.
Wherein, the time delay estimate for determining each antenna reception data includes：
It is determined that needing the antenna for adjusting time delay estimate to receive data, and the antenna reception of time delay estimate need not be adjusted
Data；
Need the antenna for adjusting time delay estimate to receive data to identified, carry out the estimation of current time delay estimate；
Data are received to the identified antenna that need not adjust time delay estimate, the time delay estimate that the last time is determined
As current time delay estimate, the time delay estimate that the last time determines once adjusts time delay for the reception data of the antenna upper
During estimate, estimated time delay estimate.
Wherein, the antenna received data packet that the determination needs to adjust time delay estimate includes：
Timer is set, while present channel quality is monitored；If timer has not timed out, and the channel matter monitored
The difference of value and the channel quality value stored, more than threshold value, it is determined that the reception data of the antenna are to need to adjust time delay
The antenna of estimate receives data；If timer expiry, it is determined that the reception data of the antenna are to need to adjust time delay estimate
Antenna receive data；
The antenna received data packet that the determination need not adjust time delay estimate includes：
If timer has not timed out, and the difference of the present channel quality value of the channel monitored and the channel quality value stored
Value, no more than threshold value, it is determined that the reception data of the antenna are that the antenna that need not adjust time delay estimate receives data.
The embodiment of the present invention also provides a kind of device for optimizing multiple antennas and receiving, including：
Time delay determining module, for when multiple antennas receives data, determining that each antenna receives the time delay estimate of data；
Delay compensation module, for each antenna received data, time delay estimate to carry out time delay benefit according to corresponding to
Repay；
Data combiners block, for the data received to each antenna after progress delay compensation, carry out data merging.
Wherein, the time delay determining module can include：
Frequency domain estimation unit, for determining that each antenna receives the channel estimation in frequency domain value of data；
Time domain estimation unit, for determining that the time domain channel that each antenna is received corresponding to the channel estimation in frequency domain value of data is estimated
Evaluation；
Peak point determining unit, the time domain channel estimation of data is received for the cyclic shift value according to setting and each antenna
Value, receive in each antenna and determined corresponding to data in channel estimation window, the peak point position of each antenna received data；
Time delay result determining unit, for by the peak point position of identified each antenna received data, being defined as
Each antenna receives the time delay estimate of data.
Based on above-mentioned technical proposal, the method for optimization multiple antennas reception provided in an embodiment of the present invention, received in multiple antennas
During data, the time delay estimate of data is received by identified each antenna, time delay can be carried out to each antenna received data
Compensation so that each antenna received data is substantially at synchronous regime, reduces the time delay between the data that multiple antennas receives
Difference, in the data subsequently received to each antenna after delay compensation, progress data merging treatment, after may be such that data merge
Result accuracy it is higher, lift the performance of multi-aerial receiver.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the flow chart for the method that optimization multiple antennas provided in an embodiment of the present invention receives；
Fig. 2 is the schematic diagram of optimization multi-antenna receiving method provided in an embodiment of the present invention；
Fig. 3 is a kind of method flow for determining each antenna and receiving the time delay estimate of data provided in an embodiment of the present invention
Figure；
Fig. 4 is the another method flow chart that optimization multiple antennas provided in an embodiment of the present invention receives；
Fig. 5 is another schematic diagram of optimization multi-antenna receiving method provided in an embodiment of the present invention；
Fig. 6 is the another method flow chart that optimization multiple antennas provided in an embodiment of the present invention receives；
Fig. 7 is the structured flowchart for the device that optimization multiple antennas provided in an embodiment of the present invention receives；
Fig. 8 is the structured flowchart of time delay determining module provided in an embodiment of the present invention；
Fig. 9 is the structured flowchart of frequency domain estimation unit provided in an embodiment of the present invention；
Figure 10 is the structured flowchart of time domain estimation unit provided in an embodiment of the present invention；
Figure 11 is the structured flowchart of delay compensation module provided in an embodiment of the present invention；
Figure 12 is another structured flowchart for the device that optimization multiple antennas provided in an embodiment of the present invention receives；
Figure 13 is the structured flowchart of time delay determining module provided in an embodiment of the present invention；
Figure 14 is the structured flowchart of adjustment determining unit provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1 is the flow chart for the method that optimization multiple antennas provided in an embodiment of the present invention receives, and this method can be applied to have
There are the equipment of multiple antennas, including network side equipment (such as base station) and user side equipment (such as mobile phone), reference picture 1, this method
It can include：
Step S100, when multiple antennas receives data, determine that each antenna receives the time delay estimate of data；
Each antenna receives the time delay difference of data in multiple antennas, by determining that each antenna receives the time delay estimate of data,
Time domain compensation processing can be made to each antenna received data；
Optionally, the time domain data that the embodiment of the present invention can be by each antenna by respective channels received data, right
Peak point position in the channel estimation window answered, it is defined as the time delay estimate that each antenna receives data；
There is 1~antenna of antenna M with multiple antennas, exemplified by common M roots antenna, antenna i is an antenna therein, and the present invention is real
Apply example and can determine that antenna i receives the time delay estimate of data；By calculating antenna i received datas in corresponding channel estimation
Peak point position in window, you can determine that antenna i receives the time delay estimate of data；The M roots antenna is made such as antenna i place
Reason, it can obtain the time delay estimate that each antenna receives data.
Step S110, to each antenna received data, time delay estimate carries out delay compensation according to corresponding to；
After the time delay estimate that each antenna receives data is determined, the embodiment of the present invention can receive data by each antenna
Time delay estimate, to each antenna received data carry out delay compensation；Such as estimate in the time delay that antenna i reception data are determined
After evaluation, the embodiment of the present invention can be to the data of antenna i receptions, and the time delay estimate according to antenna i carries out delay compensation, to M
Root antenna received data carries out delay compensation by corresponding time delay estimate, then may be such that what M root antennas were received
Data are in synchronous regime, eliminate the delay variation between the data that multiple antennas receives；
Optionally, the time delay state of antenna reception data is broadly divided into two kinds：Postpone and advanced；Receiving data delay
When, the time for the data that antenna receives will be more late than lock in time, on the other hand, the embodiment of the present invention can be by the time domain of received data
Data, corresponding time delay estimate is subtracted, realizes reception data syn-chronization during delay；When reception data are advanced, antenna receives
Time of data will be more early than lock in time, on the other hand, the embodiment of the present invention can by the time domain data of received data, plus pair
The time delay estimate answered, realize reception data syn-chronization when channel is advanced.Optionally, lock in time can be with of channel estimation window
Beginning, position was corresponding.
Step S120, the data received to each antenna after progress delay compensation, carry out data merging.
For ease of understanding, Fig. 2 shows the schematic diagram of optimization multi-antenna receiving method, reference picture 2, the number that each antenna receives
According to delay compensation can be carried out by corresponding time delay estimate, in the time delay for carrying out delay compensation and completing each antenna and receiving data
After correction, then the data received to each antenna merge processing.
As can be seen that the method that optimization multiple antennas provided in an embodiment of the present invention receives, when multiple antennas receives data, leads to
The time delay estimate that identified each antenna receives data is crossed, delay compensation can be carried out to each antenna received data so that
Each antenna received data is in synchronous regime, eliminates the delay variation between the data that multiple antennas receives, follow-up right
The data that each antenna after delay compensation receives, when carrying out data merging treatment, it may be such that the accurate of the result after data merging
Du Genggao, lift the performance of multi-aerial receiver.
Fig. 3 shows a kind of method for determining each antenna and receiving the time delay estimate of data provided in an embodiment of the present invention,
Reference picture 3, this method can include：
Step S200, determine that each antenna receives the channel estimation in frequency domain value of data；
With the kth of multiple antennasaRExemplified by root antenna, kthaRRoot antenna passes through kthaVRoot virtual-antenna receives data, then this hair
Bright embodiment can determine that in kthaROn root antenna, the kth that receivesaVN number of reception sampling at the channel response of root virtual-antenna
The channel estimation in frequency domain value of pointThe identified channel estimation in frequency domain valueAs kthaRThe of root antenna
kaVThe channel estimation in frequency domain value of the channel of root virtual-antenna, wherein, N number of reception sampled point is to pass through kthaVRoot virtual-antenna
The sampled point of channel received data；
Step S210, determine that each antenna receives the time domain channel estimate corresponding to the channel estimation in frequency domain value of data；
Optionally, with kthaRExemplified by root antenna, the embodiment of the present invention can pair channel estimation in frequency domain value determined
Make with the IDFT of the corresponding length points of N number of reception sampled point (Inverse Discrete Fourier Transform, from
Dissipate inverse Fourier transform) conversion, i.e.,So as to obtain kthaRThe kth of root antennaaVRoot virtual-antenna
Channel time domain channel estimate.
Step S220, the time domain channel estimate of data is received according to the cyclic shift value of setting and each antenna, in each day
Line is received and determined corresponding to data in channel estimation window, the peak point position of each antenna received data；
Wherein, cyclic shift value is the given value of setting, but the cyclic shift value can change with actual use situation；With
KthaRExemplified by root antenna, the embodiment of the present invention can be according to the cyclic shift value of setting, kthaRThe kth of root antennaaVRoot virtual-antenna
Receive the time domain channel estimate of dataIn kthaRThe kth of root antennaaVRoot virtual-antenna receives
Determined in channel estimation window corresponding to data, kthaRThe peak point position of the response data for N number of point that root antenna is received；
Step S230, by the peak point position of identified each antenna received data, it is defined as each antenna and receives number
According to time delay estimate.
Optionally, peak point position is likely located at the right side of corresponding channel estimation window, corresponding to receive data delay, i.e. day
Delay be present in the data that line receives；Peak point position is likely located at the left side of corresponding channel estimation window, and the corresponding data that receive surpass
Before, i.e., the data that antenna receives are present in advance；Peak point position is likely located at the original position of corresponding channel estimation window, represents
Time delay (not postponing also not advanced) is not present in reception data on the antenna.
Optionally, when delay be present, the time domain data of reception can be subtracted corresponding time delay estimate；Surpass in channel
, can be by the time domain data of reception, plus corresponding time delay estimate, so as to realize delay compensation when preceding.Fig. 4 shows the present invention
The another method flow chart that the optimization multiple antennas that embodiment provides receives, reference picture 4, this method can include：
Step S300, when multiple antennas receives data, determine that each antenna receives the channel estimation in frequency domain value of data；
Step S310, determine that each antenna receives the time domain channel estimate corresponding to the channel estimation in frequency domain value of data；
Step S320, the time domain channel estimate of data is received according to the cyclic shift value of setting and each antenna, in each day
Line is received and determined corresponding to data in channel estimation window, the peak point position of each antenna received data；
Step S330, by the peak point position of identified each antenna received data, it is defined as each antenna and receives number
According to time delay estimate；
Step S340, for each antenna, if the peak point position of identified antenna received data, positioned at corresponding letter
The right side of road estimating window, it is determined that the data delay that the antenna receives, received with the peak point position to the antenna
Time domain data corresponding to data, carry out delay compensation processing；
Optionally, the time domain data for the data that antenna can be received, corresponding time delay estimate is subtracted；The time domain data table
What is shown is after antenna receives data, carries out AD (modulus) conversions to receiving data, removes CP (Cyclic Prefix, before circulation
Sew) etc. after a series of processing, the time domain data changed.
Such as kthaRRoot antenna is in kthaVThe peak point of the response data of the N number of point received on the channel of root virtual-antenna
Position is located at the right side of channel estimation window, then can determine that kthaRThe kth of root antennaaVRoot virtual-antenna receives the delay point of data
Number k=n_delay, for from kthaRThe kth of root antennaaVThe data received on root virtual-antenna, by A/D conversions, removal
CP, FFT, after being converted to the time domain data e (ts) of corresponding length, can be by way of e (ts) '=e (ts-k) to time domain
Data e (ts) carries out delay compensation processing.
Step S350, for each antenna, if the peak point position of identified antenna received data, positioned at corresponding letter
The left side of road estimating window, it is determined that the data that the antenna receives are advanced, received with the peak point position to the antenna
Time domain data corresponding to data, carry out lead compensation processing；
Optionally, the time domain data that antenna can be received, plus the time delay estimate of respective channels；The time domain data represents
Be antenna by corresponding channel received data after, after carrying out A/D conversions to receiving data, removing a series of processing such as CP,
The time domain data changed.
Such as kthaRRoot antenna is in kthaVThe peak point of the response data of the N number of point received on the channel of root virtual-antenna
Position is located at the left side of channel estimation window, then can determine that kthaRThe kth of root antennaaVRoot virtual-antenna receives the advanced point of data
Number k=-n_delay, for from kthaRThe kth of root antennaaVThe data received on root virtual-antenna, changing, going by A/D
Except CP, FFT, be converted to the time domain data e (ts) of corresponding length after, when can be by way of e (ts) '=e (ts-k) pair
Numeric field data e (ts) carries out lead compensation processing.
Optionally, the peak point position of identified antenna received data, it is also possible to positioned at corresponding reception data
The original position of channel estimation window, for such a situation, when the embodiment of the present invention can determine that the data that the antenna receives do not have
Prolong, time domain data carries out delay compensation corresponding to the data not received to the antenna.
Step S360, the data received to each antenna after progress delay compensation, carry out data merging.
For ease of understanding, Fig. 5 shows another schematic diagram of optimization multi-antenna receiving method, and the data that each antenna receives can
It is AD converted, obtains numerical data, CP is removed to the numerical data, FFT is carried out to the numerical data after removal CP,
Data after FFT are converted into time domain data；Time domain data corresponding to the data that the antenna receives, can be according to reception number
According to it is corresponding postpone, it is advanced or without case propagation delays, carry out delay compensation processing, lead compensation is handled or mended without time delay
Repay；Subsequently again to carrying out delay compensation processing, lead compensation processing or each antenna received data without delay compensation
Corresponding time domain data, carry out data merging.
Further, if when each multiple antennas receives data, the reception data to all antennas carry out time delay estimation
The estimation of value, then carry out delay compensation, then processing delay increases, and can also influence the receptivity of receiver, therefore the present invention can
It is determined that needing the antenna for adjusting time delay estimate to receive data, and the antenna reception data of time delay estimate need not be adjusted,
When each multiple antennas receives data, only estimating for time delay estimate is carried out to needing the antenna for adjusting time delay estimate to receive data
Meter, and the antenna to that need not adjust time delay estimate receives data then using the last time delay estimate determined.
Optionally, Fig. 6 shows the another method flow chart that optimization multiple antennas provided in an embodiment of the present invention receives, reference
Fig. 6, this method can include：
Step S400, when multiple antennas receives data, it is determined that need the antenna for adjusting time delay estimate to receive data, and not
The antenna for adjusting time delay estimate is needed to receive data；
Optionally, timer can be set in the embodiment of the present invention, monitors channel variation, while more currently received pilot tone is believed
Number measurement result with storage pilot signal measurement result；If timer has not timed out, and the measurement result of pilot signal with
The pilot signal measurement result of storage, the difference between the two are more than a previously given amount delta, then it is assumed that channel variation is larger；
If timer has not timed out, and the difference between the two is less than a previously given amount delta, then it is assumed that channel variation is smaller；If
Timer expiry, then it is assumed that channel variation is larger.
If the currently monitored variations are smaller, then it is assumed that need not adjust delay compensation amount, i.e., need not carry out
Time delay is estimated, directly reception signal is compensated using the time delay estimate currently preserved；Otherwise need to carry out time delay estimation,
And new time delay estimate is stored, reception signal is compensated with new time delay estimate, while restart channel monitoring and determine
When device.
Specifically, receiver can (for example, base station side need to consider up channel, end side needs to consider by its symmetric channel
Down channel) quality monitoring, adjudicate each antenna and receive whether data need to adjust time delay estimate；To the prison of channel quality
Survey, can be by a timer, while the signal quality that more currently received channel is transmitted, with the channel pair stored
The signal quality answered；If timer has not timed out, and the difference between the two (signal quality that currently received channel is transmitted, and
Storage the channel corresponding to signal quality difference) be more than a previously given amount delta, then it is assumed that the channel variation compared with
Greatly, need to carry out time delay estimate reevaluates adjustment；If timer has not timed out, and the difference between the two is previously given less than one
Amount delta, then it is assumed that the channel variation is smaller, is not required to carry out time delay estimate to reevaluate adjustment；If timer surpasses
When, then it is assumed that channel variation is larger, and need to carry out time delay estimate reevaluates adjustment；
Step S410, need the antenna for adjusting time delay estimate to receive data to identified, carry out time delay estimate and estimate
Meter, to need not adjust time delay estimate antenna receive data, using last time estimation time delay estimate as it is current when
Prolong estimate；
If the change of the currently monitored channel is smaller, then it is assumed that need not adjust time delay estimate, i.e., need not carry out
Time delay estimates that directly (last time adjustment time delay estimate when institute is really using the last time delay estimate determined currently preserved
Fixed time delay estimate) compensated to receiving data；Otherwise the estimation of progress time delay estimate is needed, and stores new institute
The time delay estimate of estimation, compensated with new time delay estimate to receiving data, while restart the timer of monitoring channel.
Optionally, the estimation mode for receiving the time delay estimate of data can be as shown in Figure 3.
Optionally, step S400 and S410 can be performed, to determine to need in time to adjust in real time when multiple antennas receives data
The antenna of whole time delay estimate receives data, so as to ensure the accuracy of follow-up delay compensation.
Step S420, to each antenna received data, time delay estimate carries out delay compensation according to corresponding to；
Step S430, the data received to each antenna after progress delay compensation, carry out data merging.
The present invention to each antenna received data by carrying out delay compensation so that each antenna received data is in
Synchronous regime, the delay variation between the data that multiple antennas receives is eliminated, subsequently each antenna after delay compensation is being received
Data, carry out data merging treatment when, may be such that data merge after result accuracy it is higher, lifted multi-aerial receiver
Performance.
The device received below to optimization multiple antennas provided in an embodiment of the present invention is introduced, and optimization described below is more
The method that the device that antenna receives can receive with above-described optimization multiple antennas is mutually to should refer to.
Fig. 7 is the structured flowchart for the device that optimization multiple antennas provided in an embodiment of the present invention receives, and the device can be applied to
Equipment with multiple antennas, including network side equipment (such as base station) and user side equipment (such as mobile phone), reference picture 7, the dress
Putting to include：
Time delay determining module 100, for when multiple antennas receives data, determining that each antenna receives the time delay estimation of data
Value；
Delay compensation module 200, for each antenna received data, time delay estimate to carry out time delay according to corresponding to
Compensation；
Data combiners block 300, for the data received to each antenna after progress delay compensation, carry out data merging.
Optionally, Fig. 8 shows a kind of alternative construction of time delay determining module 100 provided in an embodiment of the present invention, reference
Fig. 8, time delay determining module 100 can include：
Frequency domain estimation unit 110, for determining that each antenna receives the channel estimation in frequency domain value of data；
Time domain estimation unit 111, for determining that each antenna receives the time domain letter corresponding to the channel estimation in frequency domain value of data
Road estimate；
Peak point determining unit 112, the time domain channel of data is received for the cyclic shift value according to setting and each antenna
Estimate, receive in each antenna and determined corresponding to data in channel estimation window, the peak point position of each antenna received data；
Time delay result determining unit 113, for by the peak point position of identified each antenna received data, it is determined that
The time delay estimate of data is received for each antenna.
Optionally, Fig. 9 shows a kind of alternative construction of frequency domain estimation unit 110 provided in an embodiment of the present invention, reference
Fig. 9, frequency domain estimation unit 110 can include：
Frequency domain estimation performs subelement 1101, for for kthaRRoot antenna, it is determined that in kthaROn root antenna, receive
KthaVThe channel estimation in frequency domain value of N number of reception sampled point at the channel response of root virtual-antennaWherein, kthaR
Root antenna is any antenna in multiple antennas, describedFor kthaRThe kth of root antennaaVThe frequency domain channel of root virtual-antenna
Estimate.
Optionally, Figure 10 shows a kind of alternative construction of time domain estimation unit 120 provided in an embodiment of the present invention, reference
Figure 10, time domain estimation unit 111 can include：
Time domain estimation performs subelement 1111, for for kthaRRoot antenna, pair channel estimation in frequency domain value determinedMake to convert with N number of IDFT for receiving the corresponding length points of sampled point, obtain corresponding to time domain channel estimate
Value, resulting time domain channel estimate is kthaRThe kth of root antennaaVThe time domain channel estimate of root virtual-antenna.
Optionally, Figure 11 shows a kind of alternative construction of delay compensation module 200 provided in an embodiment of the present invention, reference
Figure 11, delay compensation module 200 can include：
Delay compensation unit 210, for for each antenna, if the peak point position of identified antenna received data,
Positioned at the right side of corresponding channel estimation window, it is determined that the data delay that the antenna receives, with the peak point position to institute
Time domain data corresponding to the data of antenna reception is stated, carries out delay compensation processing；
Lead compensation unit 220, for for each antenna, if the peak point position of identified antenna received data,
Positioned at the left side of corresponding channel estimation window, it is determined that the data that the antenna receives are advanced, with the peak point position to institute
Time domain data corresponding to the data of antenna reception is stated, carries out lead compensation processing.
Optionally, delay compensation module 200 can be also used for, for each antenna, if identified antenna received data
Peak point position, positioned at the original position of corresponding channel estimation window, it is determined that the data that the antenna receives do not have time delay,
Time domain data carries out delay compensation corresponding to the data not received to the antenna.
Optionally, Figure 12 shows another structural frames for the device that optimization multiple antennas provided in an embodiment of the present invention receives
Figure, with reference to shown in Fig. 7 and Figure 12, the device can also include：
Time domain data determining module 400, for being AD converted to antenna received data, numerical data is obtained, it is right
The numerical data removes CP, carries out FFT to the numerical data after removal CP, the frequency domain data after FFT is changed
For time domain data.
Optionally, Figure 13 shows another alternative construction of time delay determining module 100 provided in an embodiment of the present invention, ginseng
According to Figure 13, time delay determining module 100 can include：
Determining unit 120 is adjusted, the antenna for determining to need to adjust time delay estimate receives data, and need not adjust
The antenna of time delay estimate receives data；
First time delay determining unit 121, for needing the antenna for adjusting time delay estimate to receive data to identified, enter
The estimation of time delay estimate before the trade；
Second time delay determining unit 122, for receiving data to the identified antenna that need not adjust time delay estimate,
Using the time delay estimate that the last time determines as current time delay estimate, the time delay estimate that the last time determines is the antenna
Receive data it is upper once adjust time delay estimate when, estimated time delay estimate.
Optionally, Figure 14 shows a kind of alternative construction of adjustment determining unit 120 provided in an embodiment of the present invention, reference
Figure 14, adjustment determining unit 120 can include：
Subelement 1201 is monitored, is monitored for setting timer, while to present channel quality；
Determination subelement 1202 need to be adjusted, if had not timed out for timer, and the channel quality value monitored is with having stored
Channel quality value difference, more than threshold value, it is determined that the reception data of the antenna be need adjust time delay estimate antenna
Receive data；If timer expiry, it is determined that the reception data of the antenna are to need the antenna for adjusting time delay estimate to receive number
According to；
It is not required to adjust determination subelement 1203, if had not timed out for timer, and the channel quality value monitored is with having deposited
The difference of the channel quality value of storage, no more than threshold value, it is determined that the reception data of the antenna are that need not adjust time delay estimate
Antenna receive data.
The embodiment of the present invention also provides a kind of electronic equipment, and the electronic equipment can include optimization multiple antennas described above
The device of reception, the electronic equipment have multiple antennas, can be network side equipment (such as base station) or user side equipment (such as mobile phone
Deng)；The electronic equipment can determine that each antenna receives the time delay estimate of data, to each antenna when multiple antennas receives data
Received data, time delay estimate carries out delay compensation according to corresponding to, and each antenna after progress delay compensation is received
Data, carry out data merging；So that each antenna received data is in synchronous regime, the number that multiple antennas receives is eliminated
Delay variation between, in the data subsequently received to each antenna after delay compensation, when carrying out data merging treatment, it can make
Obtain the performance that the accuracy of the result after data merge is higher, and lifting multiple antennas receives.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, the composition and step of each example are generally described according to function in the above description.These
Function is performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.Specialty
Technical staff can realize described function using distinct methods to each specific application, but this realization should not
Think beyond the scope of this invention.
Directly it can be held with reference to the step of method or algorithm that the embodiments described herein describes with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (7)
- A kind of 1. method for optimizing multiple antennas and receiving, it is characterised in that includingWhen multiple antennas receives data, determine that each antenna receives the time delay estimate of data；To each antenna received data, time delay estimate carries out delay compensation according to corresponding to；The data received to each antenna after progress delay compensation, carry out data merging；Wherein, the time delay estimate for determining each antenna reception data includes：Determine that each antenna receives the channel estimation in frequency domain value of data；Determine that each antenna receives the time domain channel estimate corresponding to the channel estimation in frequency domain value of data；The time domain channel estimate of data is received according to the cyclic shift value of setting and each antenna, it is corresponding to receive data in each antenna Channel estimation window in determine, the peak point position of each antenna received data；By the peak point position of identified each antenna received data, it is defined as the time delay estimation of the reception data of each antenna Value；Or the time delay estimate for determining each antenna reception data includes：It is determined that needing the antenna for adjusting time delay estimate to receive data, and the antenna reception number of time delay estimate need not be adjusted According to；Need the antenna for adjusting time delay estimate to receive data to identified, carry out the estimation of current time delay estimate；The antenna that time delay estimate need not be adjusted to identified receives data, using the time delay estimate that the last time determines as Current time delay estimate, the time delay estimate that the last time determines once adjust time delay estimate for the reception data of the antenna upper When, estimated time delay estimate.
- 2. the method that optimization multiple antennas according to claim 1 receives, it is characterised in that described to determine that each antenna receives number According to channel estimation in frequency domain value include：For kthaRRoot antenna, it is determined that in kthaROn root antenna, the kth that receivesaVN at the channel response of root virtual-antenna The individual channel estimation in frequency domain value for receiving sampled pointWherein, kthaRRoot antenna is any antenna in multiple antennas, describedFor kthaRThe kth of root antennaaVThe channel estimation in frequency domain value of root virtual-antenna；The time domain channel estimate for determining that each antenna is received corresponding to the channel estimation in frequency domain value of data includes：For kthaRRoot antenna, pair channel estimation in frequency domain value determinedMake corresponding with N number of reception sampled point The IDFT conversion of length points, obtains corresponding time domain channel estimate, resulting time domain channel estimate is kthaRRoot antenna KthaVThe time domain channel estimate of root virtual-antenna.
- 3. the method that optimization multiple antennas according to claim 1 or 2 receives, it is characterised in that described to be connect to each antenna The data of receipts, time delay estimate, which carries out delay compensation, according to corresponding to includes：For each antenna, if the peak point position of identified antenna received data, positioned at the right side of corresponding channel estimation window Side, it is determined that the data delay that the antenna receives, when corresponding to the data received with the peak point position to the antenna Numeric field data, carry out delay compensation processing；For each antenna, if the peak point position of identified antenna received data, positioned at a left side for corresponding channel estimation window Side, it is determined that the data that the antenna receives are advanced, when corresponding to the data received with the peak point position to the antenna Numeric field data, carry out lead compensation processing.
- 4. the method that optimization multiple antennas according to claim 3 receives, it is characterised in that also include：For each antenna, if the peak point position of identified antenna received data, positioned at rising for corresponding channel estimation window Beginning position, it is determined that the data that the antenna receives do not have time delay, time domain data corresponding to the data not received to the antenna Carry out delay compensation.
- 5. the method that optimization multiple antennas according to claim 3 receives, it is characterised in that the data pair that the antenna receives The determination process for the time domain data answered includes：Antenna received data is AD converted, obtains numerical data；Cyclic prefix CP is removed to the numerical data；FFT is carried out to the numerical data after removal CP；Frequency domain data after FFT is converted into time domain data.
- 6. the method that optimization multiple antennas according to claim 1 receives, it is characterised in that the determination needs to adjust time delay The antenna received data packet of estimate includes：Timer is set, while present channel quality is monitored；If timer has not timed out, and the channel quality value monitored With the difference of the channel quality value stored, more than threshold value, it is determined that the reception data of the antenna for need adjust time delay estimation The antenna of value receives data；If timer expiry, it is determined that the reception data of the antenna are the day for needing to adjust time delay estimate Line receives data；The antenna received data packet that the determination need not adjust time delay estimate includes：If timer has not timed out, and the difference of the present channel quality value monitored and the channel quality value stored, it is not more than Threshold value, it is determined that the reception data of the antenna are that the antenna that need not adjust time delay estimate receives data.
- A kind of 7. device for optimizing multiple antennas and receiving, it is characterised in that including：Time delay determining module, for when multiple antennas receives data, determining that each antenna receives the time delay estimate of data；Delay compensation module, for each antenna received data, time delay estimate to carry out delay compensation according to corresponding to；Data combiners block, for the data received to each antenna after progress delay compensation, carry out data mergingWherein, the time delay determining module can include：Frequency domain estimation unit, for determining that each antenna receives the channel estimation in frequency domain value of data；Time domain estimation unit, for determining that each antenna receives the time domain channel estimation corresponding to the channel estimation in frequency domain value of data Value；Peak point determining unit, the time domain channel estimate of data is received for the cyclic shift value according to setting and each antenna, Receive in each antenna and determined corresponding to data in channel estimation window, the peak point position of each antenna received data；Time delay result determining unit, for by the peak point position of identified each antenna received data, being defined as each day Line receives the time delay estimate of data；Or the time delay determining module can include：Determining unit is adjusted, the antenna for determining to need to adjust time delay estimate receives data, and need not adjust time delay and estimate The antenna of evaluation receives data；First time delay determining unit, for needing the antenna for adjusting time delay estimate to receive data to identified, carry out current The estimation of time delay estimate；Second time delay determining unit, for receiving data to the identified antenna that need not adjust time delay estimate, by upper one For the time delay estimate of secondary determination as current time delay estimate, the time delay estimate that the last time determines is the reception number of the antenna According to it is upper once adjust time delay estimate when, estimated time delay estimate.
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| CN105897356B (en) * | 2016-03-29 | 2017-12-12 | 乐视控股（北京）有限公司 | Mobile communication terminal and the method and apparatus for optimizing its wireless performance |
| CN107302392B (en) * | 2016-04-14 | 2020-11-27 | 中兴通讯股份有限公司 | Method and device for combining antenna data under time delay channel |
| CN108512713B (en) * | 2017-02-28 | 2023-02-28 | 中兴通讯股份有限公司 | Method and device for calculating time delay |
| CN111030738A (en) * | 2019-12-28 | 2020-04-17 | 惠州Tcl移动通信有限公司 | Optimization method of MIMO antenna and mobile terminal |
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