CN105450561B - A kind of information processing method and electronic equipment - Google Patents
A kind of information processing method and electronic equipment Download PDFInfo
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- CN105450561B CN105450561B CN201410510737.8A CN201410510737A CN105450561B CN 105450561 B CN105450561 B CN 105450561B CN 201410510737 A CN201410510737 A CN 201410510737A CN 105450561 B CN105450561 B CN 105450561B
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Abstract
The invention discloses a kind of information processing method and electronic equipments, wherein the described method includes: the first operation of triggering, first operation carries out channel estimation for characterizing；First operation is responded, the first information and the second information are generated；Dynamic adjustment is carried out to the length of window of time-domain windowed according to the first information and second information in the time domain；Window after adjusting length by dynamic carries out time-domain windowed to intercept to obtain the destination sample object in time domain；Based on the destination sample object, channel estimation is carried out.
Description
Technical field
The present invention relates to mechanics of communication more particularly to a kind of information processing methods and electronic equipment.
Background technique
Present inventor at least has found exist in the related technology during realizing the embodiment of the present application technical solution
Following technical problem:
In the channel estimation scene of LTE-A uplink channel transmission, since multiple transmittings are flowed when due to LTE-A uplink
Demodulated reference signal (DMRS) on identical running time-frequency resource, for the calculating of channel estimation, according to the prior art
The long time domain window of fixation window, good performance can not be obtained, will affect the accuracy of channel estimation, it is therefore desirable to propose one
The more superior channel estimation scheme of kind.In the related technology, for the problem, it there is no effective solution.
Summary of the invention
In view of this, the embodiment of the present invention is desirable to provide a kind of information processing method and electronic equipment, solve at least existing
There is the above problem of technology.
The technical solution of the embodiment of the present invention is achieved in that
The embodiment of the invention provides a kind of information processing method, the method is applied in electronic equipment, the method
Include:
The first operation of triggering, first operation carry out channel estimation for characterizing；
First operation is responded, the first information and the second information are generated；
Dynamic tune is carried out to the length of window of time-domain windowed according to the first information and second information in the time domain
It is whole；
Window after adjusting length by dynamic carries out time-domain windowed to intercept to obtain the destination sample object in time domain；
Based on the destination sample object, channel estimation is carried out.
Preferably, the method also includes:
Before the generation first information and the second information, the first equivalent channel on frequency domain is generated；
Third information is generated, the third information on frequency domain for carrying out window adding in frequency domain, so that adding by the frequency domain
Window intercepts to obtain the first sample objects that energy on frequency domain is concentrated, to carry out channel estimation.
Preferably, the method also includes:
After generating the third information, the second equivalent letter is obtained according to first equivalent channel and the third information
Road.
Preferably, the method also includes:
It is described second equivalent channel is obtained according to first equivalent channel and the third information after, by described second
Equivalent channel from frequency-domain transform to time domain on, obtain the second sample objects.
Preferably, described in the time domain according to the first information and second information to the length of window of time-domain windowed
Dynamic adjustment is carried out, the window after length is adjusted by dynamic carries out time-domain windowed to intercept to obtain the destination sample pair in time domain
As, comprising:
Dynamic adjustment is carried out according to leftward position of the first information to the window of the time-domain windowed；
Dynamic adjustment is carried out according to right positions of second information to the window of the time-domain windowed；
Using dynamic window adjusted, time-domain windowed is carried out to second sample objects and obtains third sampling pair
As using the third sample objects as the destination sample object.
Preferably, described to utilize dynamic window adjusted, time-domain windowed is carried out to second sample objects and is obtained
It is specifically included to third sample objects using the third sample objects as the destination sample object:
According to dynamic window adjusted, time domain is carried out to second sample objects for different stream respectively and is added
Window isolates the destination sample object corresponding with the stream；
Correspondingly, described to be based on the destination sample object, carry out channel estimation, comprising:
The destination sample object is switched to frequency domain from time domain, obtains the 4th sample objects；
According to the 4th sample objects, the channel estimation of the stream is carried out.
The embodiment of the invention provides a kind of electronic equipment, the electronic equipment includes:
Trigger unit, for triggering the first operation, first operation carries out channel estimation for characterizing；
Response unit generates the first information and the second information for responding first operation；
First processing units, in the time domain according to the first information and second information to the window of time-domain windowed
Mouth length carries out dynamic adjustment；
Interception unit intercepts to obtain the mesh in time domain for carrying out time-domain windowed by the window after dynamic adjustment length
Mark sample objects；
The second processing unit carries out channel estimation for being based on the destination sample object.
Preferably, the electronic equipment further include:
First generation unit, before the generation first information and the second information, first on generation frequency domain is equivalent
Channel；
Second generation unit, for generating third information, the third information makes for carrying out window adding in frequency domain on frequency domain
The first sample objects for intercepting to obtain that energy is concentrated on frequency domain by the window adding in frequency domain are obtained, to carry out channel estimation.
Preferably, the electronic equipment further include:
First arithmetic element, after generating the third information, according to first equivalent channel and the third
Information obtains the second equivalent channel.
Preferably, the electronic equipment further include:
Second arithmetic element obtains the second equivalent letter according to first equivalent channel and the third information for described
After road, by second equivalent channel from frequency-domain transform to time domain on, obtain the second sample objects.
Preferably, the first processing units further comprise:
The first adjustment subelement, for being carried out according to leftward position of the first information to the window of the time-domain windowed
Dynamic adjusts；
Second adjustment subelement, for being carried out according to right positions of second information to the window of the time-domain windowed
Dynamic adjusts；
The interception unit, is further used for using dynamic window adjusted, to second sample objects into
Row time-domain windowed obtains third sample objects, using the third sample objects as the destination sample object.
Preferably, the interception unit is further used for according to dynamic window adjusted, respectively for different
Stream carries out time-domain windowed to second sample objects to isolate the destination sample object corresponding with the stream；
Correspondingly, described the second processing unit is further used for the destination sample object being switched to frequency domain from time domain,
Obtain the 4th sample objects；According to the 4th sample objects, the channel estimation of the stream is carried out.
The information processing method of the embodiment of the present invention includes: the first operation of triggering, and first operation is carried out for characterizing
Channel estimation；First operation is responded, the first information and the second information are generated；In the time domain according to the first information and institute
It states the second information and dynamic adjustment is carried out to the length of window of time-domain windowed；Window after adjusting length by dynamic carries out time domain and adds
Window intercepts to obtain the destination sample object in time domain；Based on the destination sample object, channel estimation is carried out.Using the present invention
Embodiment solves at least the above problem of the prior art.
Detailed description of the invention
Fig. 1 is an implementation process schematic diagram of embodiment of the present invention method one；
Fig. 2 is an implementation process schematic diagram of embodiment of the present invention method two；
Fig. 3 is an implementation process schematic diagram of embodiment of the present invention method three；
Fig. 4 is a composed structure schematic diagram of electronic equipment embodiment one of the present invention；
Fig. 5 is a composed structure schematic diagram of electronic equipment embodiment two of the present invention.
Specific embodiment
The implementation of technical solution is described in further detail with reference to the accompanying drawing.
Embodiment of the method one:
The embodiment of the invention discloses a kind of information processing methods, and the method is applied in electronic equipment, such as Fig. 1 institute
Show, which comprises
Step 101, the first operation of triggering, first operation carry out channel estimation for characterizing；
Step 102, response first operation, generate the first information and the second information；
Step 103, in the time domain according to the first information and second information to the length of window of time-domain windowed into
Mobile state adjustment；
Step 104 is adopted by the window progress time-domain windowed after dynamic adjustment length to intercept to obtain the target in time domain
Sample object；
Step 105 is based on the destination sample object, carries out channel estimation.
Using the embodiment of the present invention, the first letter is generated by the mutual operation for triggering and responding by step 101-102
Breath and the second information, such as " left window " and " right window " described in subsequent scenario, for carrying out time-domain windowed in the time domain；It is logical
Dynamic can be carried out to the length of window of time-domain windowed according to the first information and second information in the time domain by crossing step 103
Adjustment；Window after length can be adjusted by dynamic by step 104 carries out time-domain windowed to intercept to obtain the target in time domain
Sample objects；It can be based on the destination sample object by step 105, carry out channel estimation.
Since the shortcomings that prior art, is: long according to the fixation window of the prior art for the calculating of channel estimation
Time domain window, good performance can not be obtained, will affect the accuracy of channel estimation, and use the embodiment of the present invention, need
When carrying out channel SNR estimation, the time-domain windowed of dynamic adjustment can be carried out, to realize that SNR estimates, to solve channel estimation
It is adding window in the time domain, to obtain optimal shunting effect, to improve the accuracy of channel estimation.
Embodiment of the method two:
The embodiment of the invention discloses a kind of information processing methods, and the method is applied in electronic equipment, such as Fig. 2 institute
Show, which comprises
Step 201, the first operation of triggering, first operation carry out channel estimation for characterizing；
Step 202, response first operation, generate the first equivalent channel on frequency domain；
Step 203 generates third information, and the third information on frequency domain for carrying out window adding in frequency domain, so that passing through institute
Window adding in frequency domain is stated to intercept to obtain the first sample objects that energy is concentrated on frequency domain, to carry out channel estimation；
Wherein above-mentioned third information can be " window function " in subsequent scenario description；
Step 204 generates the first information and the second information；
Step 205, in the time domain according to the first information and second information to the length of window of time-domain windowed into
Mobile state adjustment；
Step 206 is adopted by the window progress time-domain windowed after dynamic adjustment length to intercept to obtain the target in time domain
Sample object；
Step 207 is based on the destination sample object, carries out channel estimation.
Using the embodiment of the present invention, is triggered by step 201 and step 203 and the mutual operation of response, generation third are believed
Breath, for carrying out window adding in frequency domain on frequency domain, so that intercepting to obtain by the window adding in frequency domain, energy on frequency domain concentrated the
One sample objects, to carry out channel estimation, such as " window function " described in subsequent scenario；The first letter is generated by step 204
Breath and the second information, such as " left window " and " right window " described in subsequent scenario, for carrying out time-domain windowed in the time domain；It is logical
Dynamic can be carried out to the length of window of time-domain windowed according to the first information and second information in the time domain by crossing step 205
Adjustment；Window after length can be adjusted by dynamic by step 206 carries out time-domain windowed to intercept to obtain the target in time domain
Sample objects；It can be based on the destination sample object by step 207, carry out channel estimation.
In one preferred embodiment of the embodiment of the present invention, the method also includes:
After generating the third information, the second equivalent letter is obtained according to first equivalent channel and the third information
Road；
Here, the first equivalent channel can be initial equivalent channel, correspondingly, the second equivalent channel can be for after adding window
New equivalent channel.
In one preferred embodiment of the embodiment of the present invention, the method also includes:
It is described second equivalent channel is obtained according to first equivalent channel and the third information after, by described second
Equivalent channel from frequency-domain transform to time domain on, obtain the second sample objects.
Embodiment of the method three:
It is described in the time domain according to the first information and second information to time domain based on above method embodiment two
The length of window of adding window carries out dynamic adjustment, and the window after length is adjusted by dynamic carries out time-domain windowed to intercept to obtain time domain
On destination sample object, as shown in Figure 3, comprising:
Step 301 carries out dynamic adjustment according to leftward position of the first information to the window of the time-domain windowed；
Step 302 carries out dynamic adjustment according to right positions of second information to the window of the time-domain windowed；
Step 303, using dynamic window adjusted, time-domain windowed is carried out to second sample objects and obtains the
Three sample objects, using the third sample objects as the destination sample object.
Embodiment of the method four:
It is described to utilize dynamic window adjusted based on above method embodiment three, to second sample objects
It carries out time-domain windowed and obtains third sample objects, using the third sample objects as the destination sample object, comprising:
According to dynamic window adjusted, time domain is carried out to second sample objects for different stream respectively and is added
Window isolates the destination sample object corresponding with the stream；
Correspondingly, described to be based on the destination sample object, carry out channel estimation, comprising:
The destination sample object is switched to frequency domain from time domain, obtains the 4th sample objects；According to the 4th sampling
Object carries out the channel estimation of the stream.
The embodiment of the present invention is described below by taking a practical application scene as an example:
For the scene of LTE-A uplink channel estimation, problem of the existing technology is: when LTE-A uplink due to
The DMRS of multiple transmitting streams needs on identical running time-frequency resource using new channel estimation method.Base station is received
DMRS signal is multiplied by the conjugation of the DMRS of local first-class upper transmitting, obtains equivalent channel, then to this equivalent channel into
Channel on not cocurrent flow is distinguished, estimates the channel on not cocurrent flow respectively by adding window on row time domain frequency domain, if using fixed window
Long time domain window, can not obtain good performance, need more preferably channel estimating performance.In view of the above-mentioned problems, using this hair
Bright embodiment, specifically includes that the SNR obtained according to estimation, and the adaptive length for adjusting time-domain windowed reaches better channel and estimates
Count performance.
It illustrates in detail below:
Assuming that the occupied carrier number of LTE-A uplink is nsc, FFT points are nfft=2^b, and have n_sc≤N_
Uplink fluxion is n in FFT, LTE_Alayer, value is (1,2,3,4), and CP length is ncp.Due on every receiving antenna
Treatment process be the same, so the process of channel estimation is described in detail in we by taking a receiving antenna as an example.
One, after base station carries out Time and Frequency Synchronization to the uplink signal received, the DMRS in the subframe received is removed into ncp
Then long CP carries out nfftThen the FFT transform of points is mapped according to the carrier wave of uplink, is received to frequency domain
Frequency domain DMRS signal yk, wherein k=0 ..., nsc。
Two, local pilot tone is generated according to 3GPP agreement, is the DMRS on first-class, is set as ck, k=0 ..., nsc-1。
Three, equivalent frequency domain channel is acquired(due to ckIt is a ZC sequence, is a complex exponential
Sequence, so there is this transformation).
Four, a window function w is generated, length is round (β nsc), wherein round (), which refers to, carries out the numerical value in bracket
Round.And the common value of β is 1.2~1.6.Common window function has Hamming window, Hanning window, triumphant plucked instrument window etc..
Five, to equivalent channel HkCarry out adding window, until new equivalent channel wherein
Six, bySignal-to-noise ratio snr is estimated, and is translated into dB value, SNR dB=10log10(snr)。
Seven, by new equivalent channelCarry out nfftThe IFFT of point transforms to time domain channel hl, l=0 ..., nfft-1。
Eight, time-domain window is set, and left window is set as Ll, right window is set as Lr。
Wherein
Wherein [] indicates to be rounded the data in bracket.θSNRFor a snr threshold, it is traditionally arranged to be 20~30dB, μ1And μ2For
Adjustable parameter is traditionally arranged to be 1.3~2.
Nine, according to time-domain window, the λ equivalent channels for flowing to this receiving antenna are isolatedWhereinM=L1,…,Lr, λ=0 ..., nlayer-1,dmrsλFor LTE-A agreement rule
Fixed value.
Ten, it enablesλ=0 ..., nlayer-1.N is carried out to thisfftThe FFT of point becomes
Frequency domain is changed to, its preceding n is takenscPoint, is set as k=0 ..., nsc, λ=0 ..., nlayer-1。
11, the λ channels for finally estimating to obtain for flowing to this receiving antenna are acquiredλ=0 ...,
nlayer- 1, wherein
12, the channel estimated on DMRS according to front estimates the letter on different running time-frequency resources by difference
Final channel estimation is completed in road.
It need to be noted that: the description of following electronic equipment item, with the above method description be it is similar, with method
Beneficial effect description, does not repeat them here.For undisclosed technical detail in electronic equipment embodiment of the present invention, the present invention is please referred to
The description of embodiment of the method.
Electronic equipment embodiment one:
The embodiment of the invention provides a kind of electronic equipment, as shown in figure 4, the electronic equipment includes:
Trigger unit, for triggering the first operation, first operation carries out channel estimation for characterizing；
Response unit generates the first information and the second information for responding first operation；
First processing units, in the time domain according to the first information and second information to the window of time-domain windowed
Mouth length carries out dynamic adjustment；
Interception unit intercepts to obtain the mesh in time domain for carrying out time-domain windowed by the window after dynamic adjustment length
Mark sample objects；
The second processing unit carries out channel estimation for being based on the destination sample object.
Electronic equipment embodiment two:
The embodiment of the invention provides a kind of electronic equipment, as shown in figure 5, the electronic equipment includes:
Trigger unit, for triggering the first operation, first operation carries out channel estimation for characterizing；
Response unit generates the first information and the second information for responding first operation；
First generation unit, before the generation first information and the second information, first on generation frequency domain is equivalent
Channel；
First processing units, in the time domain according to the first information and second information to the window of time-domain windowed
Mouth length carries out dynamic adjustment；
Second generation unit, for generating third information, the third information makes for carrying out window adding in frequency domain on frequency domain
The first sample objects for intercepting to obtain that energy is concentrated on frequency domain by the window adding in frequency domain are obtained, to carry out channel estimation；
Interception unit intercepts to obtain the mesh in time domain for carrying out time-domain windowed by the window after dynamic adjustment length
Mark sample objects；
The second processing unit carries out channel estimation for being based on the destination sample object.
In one preferred embodiment of the embodiment of the present invention, the electronic equipment further include:
First arithmetic element, after generating the third information, according to first equivalent channel and the third
Information obtains the second equivalent channel.
In one preferred embodiment of the embodiment of the present invention, the electronic equipment further include:
Second arithmetic element obtains the second equivalent letter according to first equivalent channel and the third information for described
After road, by second equivalent channel from frequency-domain transform to time domain on, obtain the second sample objects.
In one preferred embodiment of the embodiment of the present invention, the first processing units further comprise:
The first adjustment subelement, for being carried out according to leftward position of the first information to the window of the time-domain windowed
Dynamic adjusts；
Second adjustment subelement, for being carried out according to right positions of second information to the window of the time-domain windowed
Dynamic adjusts；
The interception unit, is further used for using dynamic window adjusted, to second sample objects into
Row time-domain windowed obtains third sample objects, using the third sample objects as the destination sample object.
In one preferred embodiment of the embodiment of the present invention, the interception unit is further used for according to the dynamic tune
It is opposite with the stream to isolate to carry out time-domain windowed to second sample objects for different stream respectively for window after whole
The destination sample object answered；
Correspondingly, described the second processing unit is further used for the destination sample object being switched to frequency domain from time domain,
Obtain the 4th sample objects；According to the 4th sample objects, the channel estimation of the stream is carried out.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.Apparatus embodiments described above are merely indicative, for example, the division of the unit, only
A kind of logical function partition, there may be another division manner in actual implementation, such as: multiple units or components can combine, or
It is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed each composition portion
Mutual coupling or direct-coupling or communication connection is divided to can be through some interfaces, the INDIRECT COUPLING of equipment or unit
Or communication connection, it can be electrical, mechanical or other forms.
Above-mentioned unit as illustrated by the separation member, which can be or may not be, to be physically separated, aobvious as unit
The component shown can be or may not be physical unit, it can and it is in one place, it may be distributed over multiple network lists
In member；Some or all of units can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated in one processing unit, it can also
To be each unit individually as a unit, can also be integrated in one unit with two or more units；It is above-mentioned
Integrated unit both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned include: movable storage device, it is read-only
Memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or
The various media that can store program code such as person's CD.
If alternatively, the above-mentioned integrated unit of the present invention is realized in the form of software function module and as independent product
When selling or using, it also can store in a computer readable storage medium.Based on this understanding, the present invention is implemented
Substantially the part that contributes to existing technology can be embodied in the form of software products the technical solution of example in other words,
The computer software product is stored in a storage medium, including some instructions are used so that computer equipment (can be with
It is personal computer, server or network equipment etc.) execute all or part of each embodiment the method for the present invention.
And storage medium above-mentioned includes: that movable storage device, ROM, RAM, magnetic or disk etc. are various can store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (12)
1. a kind of information processing method, the method is applied in electronic equipment, which comprises
The first operation of triggering, first operation carry out channel estimation for characterizing；
First operation is responded, the first information and the second information are generated；
Generate third information, the third information for carrying out window adding in frequency domain on frequency domain so that by the window adding in frequency domain come
Interception obtains the first sample objects that energy is concentrated on frequency domain, to carry out channel estimation；
Dynamic adjustment is carried out to the length of window of time-domain windowed according to the first information and second information in the time domain；
Window after adjusting length by dynamic carries out time-domain windowed to intercept to obtain the destination sample object in time domain；
Based on the destination sample object, channel estimation is carried out.
2. according to the method described in claim 1, the method also includes:
Before the generation first information and the second information, the first equivalent channel on frequency domain is generated.
3. according to the method described in claim 2, the method also includes:
After generating the third information, the second equivalent channel is obtained according to first equivalent channel and the third information.
4. according to the method described in claim 3, the method also includes:
It is described second equivalent channel is obtained according to first equivalent channel and the third information after, it is equivalent by described second
Channel from frequency-domain transform to time domain on, obtain the second sample objects.
5. according to the method described in claim 4, described in the time domain according to the first information and the second information clock synchronization
The length of window of domain adding window carries out dynamic adjustment, and the window after length is adjusted by dynamic carries out time-domain windowed come when intercepting to obtain
Destination sample object on domain, comprising:
Dynamic adjustment is carried out according to leftward position of the first information to the window of the time-domain windowed；
Dynamic adjustment is carried out according to right positions of second information to the window of the time-domain windowed；
Using dynamic window adjusted, time-domain windowed is carried out to second sample objects and obtains third sample objects,
Using the third sample objects as the destination sample object.
6. according to the method described in claim 5, described utilize dynamic window adjusted, to second sample objects
It carries out time-domain windowed and obtains third sample objects, using the third sample objects as the destination sample object, specifically include:
According to dynamic window adjusted, respectively for different stream to second sample objects carry out time-domain windowed come
Isolate the destination sample object corresponding with the stream；
Correspondingly, described to be based on the destination sample object, carry out channel estimation, comprising:
The destination sample object is switched to frequency domain from time domain, obtains the 4th sample objects；
According to the 4th sample objects, the channel estimation of the stream is carried out.
7. a kind of electronic equipment, the electronic equipment include:
Trigger unit, for triggering the first operation, first operation carries out channel estimation for characterizing；
Response unit generates the first information and the second information for responding first operation；
Second generation unit, for generating third information, the third information on frequency domain for carrying out window adding in frequency domain, so that logical
The window adding in frequency domain is crossed to intercept to obtain the first sample objects that energy is concentrated on frequency domain, to carry out channel estimation；
First processing units, for long to the window of time-domain windowed according to the first information and second information in the time domain
Degree carries out dynamic adjustment；
Interception unit is adopted for carrying out time-domain windowed by the window after dynamic adjustment length to intercept to obtain the target in time domain
Sample object；
The second processing unit carries out channel estimation for being based on the destination sample object.
8. electronic equipment according to claim 7, the electronic equipment further include:
First generation unit generates the first equivalent channel on frequency domain before the generation first information and the second information.
9. electronic equipment according to claim 8, the electronic equipment further include:
First arithmetic element, after generating the third information, according to first equivalent channel and the third information
Obtain the second equivalent channel.
10. electronic equipment according to claim 9, the electronic equipment further include:
Second arithmetic element, for it is described according to first equivalent channel and the third information obtain the second equivalent channel it
Afterwards, on by second equivalent channel from frequency-domain transform to time domain, the second sample objects are obtained.
11. electronic equipment according to claim 10, the first processing units, further comprise:
The first adjustment subelement, for carrying out dynamic according to leftward position of the first information to the window of the time-domain windowed
Adjustment；
Second adjustment subelement, for carrying out dynamic according to right positions of second information to the window of the time-domain windowed
Adjustment；
The interception unit is further used for using dynamic window adjusted, when carrying out to second sample objects
Domain adding window obtains third sample objects, using the third sample objects as the destination sample object.
12. electronic equipment according to claim 11, the interception unit are further used for after being adjusted according to the dynamic
Window, respectively for different stream to second sample objects carry out time-domain windowed it is corresponding with the stream to isolate
The destination sample object；
Correspondingly, described the second processing unit is further used for the destination sample object being switched to frequency domain from time domain, obtain
4th sample objects；According to the 4th sample objects, the channel estimation of the stream is carried out.
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| 基于DFT变换域的LTE上行信道估计算法研究;赵宏宇;《中国优秀硕士学位论文全文数据库（信息科技辑）》;20140215;全文 * |
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