CN106888069A - A kind of PBCH channel blind detections method - Google Patents
A kind of PBCH channel blind detections method Download PDFInfo
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Abstract
The present invention relates to a kind of PBCH channel blind detections method, the method is comprised the following steps：Signal detection is carried out to the first data according to single port algorithm, the second data are obtained；First time verification is carried out to the second data；If verification does not pass through for the first time, signal detection is carried out to the first data according to dual-port algorithm, obtain the 3rd data；Second verification is carried out to the 3rd data；If second verification does not pass through, four port channels are recombinated；Multiplexing dual-port algorithm carries out signal detection to the first data, obtains the 4th data；Third time verification is carried out to the 4th data；If third time verification passes through, blind check success.The present invention simplifies PBCH channel blind detection algorithms, and the existing algorithm of multiplexing reduces the human cost of exploitation and checking.
Description
Technical field
The present invention relates to Long Term Evolution project LTE (Long Term Evolution) mobile communication technology field, more particularly to a kind of PBCH channel blind detections method.
Background technology
In Long Term Evolution project LTE (Long Term Evolution) system, the space diversity technology that Physical Broadcast Channel PBCH (Physical broadcast channel) is used, reference can be made to the PBCH channel architecture schematic diagrames shown in Fig. 1.Space diversity MIMO (Multiple-Input Multiple-Output) is a kind of multichannel input Multiple-output.As shown in figure 1, MIMO technology refers in transmitting terminal and receiving terminal respectively using multiple transmitting antennas and reception antenna, signal is passed through transmitting terminal and transmit and receive with multiple antennas of receiving terminal, so as to improve communication quality.It can make full use of space resources, MIMO is realized by multiple antennas, in the case where frequency spectrum resource and antenna transmission power is not increased, system channel capacity can be increased exponentially, show obvious advantage, be considered as the core technology of next generation mobile communication.
The coding and decoding process of PBCH channels is as shown in Fig. 2 wherein, coding transmission process of the signal at base station eNodeB end mainly includes：CRC treatment, channel coding, rate-matched, scrambling, QPSK QPSK (Quadrature Phase Shift Keyin) modulation, layer mapping, precoding, Resource Unit RE (Resource Element) mappings, inverse fast Fourier transform (Inverse fast Fourier transform, IFFT) (plus cyclic prefix CP), Digital Up Convert, digital-to-analogue conversion DAC and signal send；The reception signal and decoding process at UE ends mainly include：Signal is received, Digital Down Convert, analog-to-digital conversion ADC, time ＆ Frequency Synchronization, Fast Fourier Transform (FFT) FFT (removing CP), RE inverse mappings, channel estimation, signal detection, layer inverse mapping, QPSK demodulation, descrambling, solution rate-matched, coding and CRC check.
Physical Broadcast Channel PBCH includes sending and receiving for signal, and signal receiving end user equipment (UE) (User Equipment) blind check mainly solves three problems：1st, antenna configuration is unknown.The operation of the different then receiving terminal MIMO detections of transmission antenna configuration is different, and common method is the situation that Polling transmission antenna is 1,2 or 4.2nd, the frequency range of signal is unknown, therefore the scrambler of descrambling is which section is also unknown.Common method is to be circulated redundancy check (Cyclic Redundancy Check) CRC to every section in turn, untill CRC check is correct.PBCH has three kinds of antenna ports combination (1/2/4) and four kinds of different scrambling codes (phase) to combine, and may be combined so being blind check PBCH and being up to 12 kinds.3rd, the information in Master Information Block MIB (Master Information Block) is solved.
When to PBCH channel blind detections, different port, i.e., different transmission antenna configured numbers, its correspondence blind check needs to use single port, dual-port or four port algorithms, detects the information of antenna configuration number, scrambler and Master Information Block.Algorithms of different is to that should have different channel matrixes during PBCH channel blind detections.
Prior art PBCH channel detection methods are primarily present following defect：
1st, the algorithm complex of prior art is too high, and when channel matrix increases, multiplying amount is increased with the order of magnitude of power side.
2nd, prior art is respectively processed to the situation of every kind of port, it is impossible to be multiplexed using existing algorithm, increased the human cost of exploitation and checking.
The content of the invention
The invention aims to solve above-mentioned the deficiencies in the prior art part, there is provided a kind of PBCH channel blind detections method.PBCH channel blind detection algorithms can be simplified, the existing algorithm of multiplexing reduces the human cost of exploitation and checking.
To achieve the above object, the invention provides a kind of PBCH channel blind detections method, the method is comprised the following steps：
Signal detection is carried out to the first data according to single port algorithm, the second data is obtained, and first time verification is carried out to the second data；If verification does not pass through for the first time, signal detection is carried out to the first data according to dual-port algorithm, obtain the 3rd data, and second verification is carried out to the 3rd data；If second verification does not pass through, channel is recombinated；Multiplexing dual-port algorithm carries out signal to the first data
Detection, obtains the 4th data；And third time verification is carried out to the 4th data；If third time verification passes through, blind check success.
Preferably, signal detection is carried out to the first data according to dual-port algorithm corresponding first two-port channel matrix, after simplifying processing procedure, obtain the second two-port channel matrix, signal detection calculating is carried out to the first data according to the second two-port channel matrix, the 3rd data are obtained, and second verification is carried out to the 3rd data.
Preferably, it is further comprising the steps of before signal detection is carried out to the first data according to single port algorithm：The data of transmission are received, and data is carried out with Digital Down Convert, digital-to-analogue conversion, time and Frequency Synchronization successively, is gone Cyclic Prefix, Fast Fourier Transform (FFT) and Resource Unit inverse mapping to process, obtain the first data；Channel is estimated, the estimated result of channel parameter is obtained.
Preferably, if second verification does not pass through, channel is recombinated, specifically includes following steps：It is the two or four port channel matrix by corresponding one or the four port channel matrix reduction of four port algorithms according to four port algorithms；Two or four port channel matrix-split is obtained into the three or four port channel matrix and the four or four port channel matrix；According to the three or four port channel matrix and the four or four port channel matrix queueing discipline corresponding with channel parameter in the second two-port channel matrix, channel is recombinated.
Preferably, verification includes for the first time：First time CRC check is carried out to the second data according to single port cyclic redundancy check (CRC) algorithm.
Preferably, second verification includes：Second CRC check is carried out to the 3rd data according to dual-port CRC algorithm.
Preferably, third time verification includes：Third time CRC check is carried out to the 4th data according to four port CRC algorithms.
Preferably, if verification passes through for the first time, blind check success, the second data are the data in the Master Information Block for solving, and emission port is 1.
Preferably, if second verification passes through, blind check success, the 3rd data are the data in the Master Information Block for solving, and emission port is 2.
Preferably, if third time verification passes through, blind check success, the 4th data are the data in the Master Information Block for solving, and emission port is 4；If the third time verification does not pass through, blind check failure receives the first data again, and blind check is carried out again.
The present invention carries out simplifying treatment for algorithm, the size of matrix is reduced, so as to reduce computational complexity.Meanwhile, the present invention carries out the treatment of simple possible to the channel matrix of four ports, has successfully been multiplexed the algorithm of dual-port, reduces the programming of developer and the workload of checking.
Brief description of the drawings
In order to become apparent from illustrating the technical scheme of the embodiment of the present invention, the accompanying drawing used needed for being described to embodiment below is briefly described, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is prior art PBCH channel architecture schematic diagrames；
Fig. 2 is the coding and decoding process schematic of prior art PBCH channels；
Fig. 3 is prior art PBCH channel blind detection method flow schematic diagrams；
Fig. 4 is a kind of PBCH channel blind detections method flow schematic diagram provided in an embodiment of the present invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
For ease of the understanding to the embodiment of the present invention, explanation is further explained with specific embodiment below in conjunction with accompanying drawing.
For the difference of apparent the understanding present invention and prior art, PBCH channel blind detections method in the prior art is described below by Fig. 3.
Fig. 3 is the schematic flow sheet of prior art PBCH channel blind detection methods.As shown in figure 3, existing PBCH channel blind detections method includes step 300-308：
In step 300, user equipment (UE) receives rf data, and data is carried out with Digital Down Convert, analog-to-digital conversion ADC successively, the treatment of time Frequency Synchronization, goes cyclic prefix CP, Fast Fourier Transform (FFT) FFT and Resource Unit inverse mapping to process, and obtains data Rx.
In step 301, to channel estimation, the estimated result of channel parameter is obtained.
Channel parameter estimation is carried out to channel situation, channel matrix is obtained in the range of certain physical resource.
It should be noted that the algorithm (single port algorithm, dual-port algorithm or four port algorithms) specifically used according to signal detection, there is corresponding single port channel matrix, two-port channel matrix or four port channel matrixes.
In step 302, signal detection is carried out to the data after step 300 treatment according to single port algorithm.
The flow of single port algorithm is first according to, the data to PBCH channels carry out signal detection.
It should be noted that in the data of Base Transmitter, by after wireless channel, being sent to receiving terminal.Therefore, the data of receiving terminal include two parts information：The data and channel parameter information of transmitting terminal.Data to PBCH channels carry out signal detection, are the data X that transmitting terminal is solved by channel matrix and data Rx.
The rf data that single port algorithm process is received, prior art is belonged to its process for carrying out signal detection, be will not be repeated here, in order to avoid fuzzy subject of the present invention.
In step 303, the data obtained to step 302 carry out a layer inverse mapping, QPSK demodulation, descrambling, solution rate-matched and decoding process, then verified according to the CRC check method of single port, if single port CRC check does not pass through, then enter step 304, if single port CRC check passes through, step 308 is jumped to.
In step 304, signal detection is carried out to the data after step 300 treatment according to dual-port algorithm.
Dual port data maps by the layer of base station eNodeB, precoding is as follows：
Layer mapping：
x(0)(i)=d(0)(2i)
x(1)(i)=d(0)(2i+1)
Precoding：
Wherein, d(0)(2i) represents the 2i data after QPSK modulation, d(0)(2i+1) represents the 2i+1 data after QPSK modulation, x(0)I-th data of (i) expression layer 0, x(1)I-th data of (i) expression layer 1, y(0)(2i) represents the 2i data of emission port (port) 0, y(0)(2i+1) represents the 2i+1 data of emission port 0.
It should be noted that d(0)(2i)、d(0)(2i+1) is by the data after CRC treatment, channel coding, rate-matched, scrambling and QPSK modulation in base station；x(0)(i)、x(1)I () is by the data after layer mapping；y(0)(2i)、y(0)(2i+1) is by the data after precoding.
Signal detection treatment is carried out to the data after step 300 treatment according to dual-port algorithm, specific treatment calculating process is as follows：If Rx is the data after step 300 treatment, H20It is the corresponding two-port channel matrix of dual-port algorithm, according to Rx and two-port channel matrix H20Signal detection is carried out, is obtained after base station maps by QPSK modulation, layer, the data X before precoding is carried out by below equation：
Wherein, two-port channel matrix H20For：
It should be noted that Rx is data of the receiving terminal after step 300 is processed, r0The 2i data that receiving port 0 is received after (2*i) expression step 300 treatment,Subscript Rxid represent receiving port sequence number, subscript Txid represents emission port sequence number, and i represents the relative numbering of data.ForReduced form.
Write above-mentioned signal detection process as final expression formula as follows：
Again extract variable and constitute matrix, due to 4 unknown quantity x in above-mentioned expression formula0With conj (x0)、x1With conj (x1) conjugate relation is respectively present, unknown quantity can be reduced to 2 by following skill：
According to following matrix operation derivation, it is possible to calculate the transmission signal X of base station by the reception signal R at UE ends：
R1=H201×X1 T(H201 *)R1=T (H201 *)H1×X1
inv[T(H201 *)×H201]×T(H201 *)×R1=inv [T (H201 *)×H201]×T(H201 *)×H201×X1=X1
It should be noted that
Can be by two-port channel matrix H20Obtain H201, Rx is obtained by UE receiving terminals and by the data Rx after step 300 treatment1, X is then obtained by signal detection1, and then obtain after base station maps by QPSK modulation, layer, the data before precoding
It should be noted that the first two-port channel matrix is H20, the second two-port channel matrix is H201。
In step 305, the data obtained to step 304 carry out a layer inverse mapping, QPSK demodulation, descrambling, solution rate-matched and decoding process, then verified according to the CRC check method of dual-port, if dual-port CRC check does not pass through, then enter step 306, if dual-port CRC check passes through, step 308 is jumped to.
In step 306, signal detection is carried out to the data after step 300 treatment according to four port algorithms.
Four port datas map by the layer of base station eNodeB, precoding is as follows：
Layer mapping
x(0)(i)=d(0)(4i)
x(1)(i)=d(0)(4i+1)
x(2)(i)=d(0)(4i+2)
x(3)(i)=d(0)(4i+3)
Precoding
Signal detection is carried out to the data after step 300 treatment according to four port algorithms, specific treatment calculating process is as follows：If Rx is the data after step 300 treatment, H40It is corresponding one or the four port channel matrix of four port algorithms, according to Rx and the one or four port channel matrix H40Signal detection is carried out, is obtained after base station maps by QPSK modulation, layer, the data X before precoding, data X is obtained by below equation：
Wherein, the one or four port channel matrix H40For：
With reference to step 304, according to the conjugate relation of known variables, variable being extracted again and matrix is constituted, unknown quantity is reduced to 4：
According to following matrix operation derivation, it is possible to calculate the transmission signal X of base station by the reception signal Rx at UE ends：
R2=H401×X2 T(H401 *)R2=T (H401 *)H401×X2
inv[T(H401 *)×H2]×T(H401 *)×R2=inv [T (H401 *)×H2]×T(H401 *)×H401×X2=X2
It should be noted that here Can be by the one or four port channel matrix H40Obtain the two or four port channel matrix H401, Rx is obtained by UE receiving terminals and by the data Rx after step 300 treatment2, X is then obtained by signal detection2, and then obtain after base station maps by QPSK modulation, layer, the data before precoding
In step 307, the data obtained to step 306 carry out a layer inverse mapping, QPSK demodulation, descrambling, solution rate-matched and decoding process, then verified according to the CRC check method of four ports, if four port CRC checks do not pass through, then blind check failure, step 300 is jumped to, data are received again, blind check is carried out again；If four port CRC checks pass through, into step 308.
In step 308, this blind check success.Blind check obtains information X and emission port the configuration quantity of Master Information Block MIB：
If jumping to step 308 from step 303, blind check is successful, then emission port is 1；
If jumping to step 308 from step 305, blind check is successful, then emission port is 2；
If entering step 308 from step 307, blind check is successful, then emission port is 4.
It should be noted that descrambled to data, solved rate-matched and decoding, and the process such as CRC check, belong to prior art part, will not be repeated here, in order to avoid fuzzy subject of the present invention.
From existing PBCH channel blind detections method and calculating process, it is known that, its algorithm complex is high, when channel matrix increases, such as four port channel matrix Hs40, its multiplying amount is with the order of magnitude increase of power side.Meanwhile, prior art is respectively processed to the situation of every kind of port, it is impossible to which existing algorithm is multiplexed, and increased the human cost of exploitation and checking.
Fig. 4 is a kind of schematic flow sheet of PBCH channel blind detections method provided in an embodiment of the present invention.As shown in figure 4, the method comprising the steps of 400-409：
Signal receiving end receives rf data, and rf data is processed, and obtains the first data；Signal detection calculating is carried out to the first data according to single port algorithm, the second data is obtained, and first time verification is carried out to the second data.Following steps 400-403 can be subdivided into：
In step 400, data are received, the first data are obtained after treatment.
User equipment (UE) signal receiving end receives rf data, and data is carried out with Digital Down Convert, analog-to-digital conversion ADC successively, the treatment of time Frequency Synchronization, goes cyclic prefix CP, Fast Fourier Transform (FFT) FFT and Resource Unit inverse mapping to process, and obtains the first data Rx.
In step 401, to channel estimation, the estimated result of channel parameter is obtained.
In step 402, signal detection is carried out to the first data according to single port algorithm, obtain the second data.
In step 403, the second data are entered with the inverse mapping of every trade layer, QPSK demodulation, descrambling, solution rate-matched and decoding process, then carry out first time verification, verified according to the CRC check method of single port.If single port CRC check does not pass through, into step 404, if single port CRC check passes through, step 409 is jumped to.First time verification is carried out to the second data；If verification passes through for the first time, blind check success.
If verification does not pass through for the first time, signal detection is carried out to the first data according to dual-port algorithm, obtain the 3rd data, and second verification is carried out to the 3rd data.Following steps 404-405 can be subdivided into：
In step 404, signal detection is carried out to the first data according to dual-port algorithm, obtain the 3rd data.
Signal detection treatment is carried out to the first data according to dual-port algorithm corresponding first two-port channel matrix, after simplifying calculating process, corresponding second two-port channel matrix is obtained, signal detection calculating is carried out to the first data according to the second two-port channel matrix, obtain the 3rd data.
With reference to the step of existing PBCH channel blind detections method 304, signal detection is carried out to the first data according to dual-port algorithm, specific treatment calculating process is as follows：If Rx is the first data, H20It is the corresponding two-port channel matrix of dual-port algorithm, according to Rx and two-port channel matrix H20Obtain after base station maps by QPSK modulation, layer, the data X before precoding is calculated by below equation：
Wherein, H20It is the first two-port channel matrix：
Again extract variable and constitute matrix, due to 4 unknown quantity x in above-mentioned expression formula0With conj (x0)、x1With conj (x1) conjugate relation is respectively present, unknown quantity can be reduced to 2 by following skill：
According to following matrix operation derivation, it is possible to calculate the transmission signal X of base station by the reception signal R at UE ends：
R1=H201×X1 T(H201 *)R1=T (H201 *)H1×X1
inv[T(H201 *)×H201]×T(H201 *)×R1=inv [T (H201 *)×H201]×T(H201 *)×H201×X1=X1
It should be noted thatSecond two-port channel matrix H201For：X can be according to X1Obtain.
After base station maps by QPSK modulation, layer, the 3rd data before precoding
In step 405, the 3rd data are carried out with a layer inverse mapping, QPSK demodulation, descrambling, solution rate-matched and decoding process, then carry out second verification, verified according to the CRC check method of dual-port,
If dual-port CRC check does not pass through, into step 406, if dual-port CRC check passes through, step 409 is jumped to.Second verification is carried out to the 4th data；If second verification passes through, blind check success.
It should be noted that step 400-405 can refer to the detailed process of prior art corresponding steps 300-305, do not repeat again herein.
If second verification does not pass through, channel is recombinated；Multiplexing dual-port algorithm carries out signal detection to the first data, obtains the 4th data, and carry out third time verification to the 4th data；If third time verification passes through, blind check success.
In step 406, if second verification does not pass through, channel is recombinated.
If second verification does not pass through, four port channels are recombinated, specifically include following steps：
It is the two or four port channel matrix by corresponding one or the four port channel matrix reduction of four port algorithms according to four port algorithms；
Three or four port channel matrix and the four or four port channel matrix are obtained according to the two or four port channel matrix-split；
According to the three or four port channel matrix and the four or four port channel matrix queueing discipline corresponding with channel parameter in the second two-port channel matrix, four port channels are recombinated.
According to four port algorithms the first data are carried out with the final derivation formula of signal detection treatment according to step 306 in the existing PBCH channel blind detections methods of Fig. 3：
H401It is the two or four port channel matrix.
The above-mentioned derivation formula of abbreviation, by Rx2It is divided into Rx21And Rx22, corresponding matrix and variable are extracted, following two equations can be reduced to：
After abbreviation splits, the two or four port channel matrix H401Can be divided into：Three or four port channel matrix H4011With the four or four port channel matrix H4012, wherein：
Corresponding variable X2Can be divided into：First variable X21With the second variable X22, wherein：
With reference in existing PBCH channel blind detections method, step 304 carries out the final derivation formula of signal detection according to dual-port algorithm to the first data：
Wherein, the second two-port channel matrix H201For：
Observation understands, as long as the channel estimation results of four ports are recombinated, to the three or four port channel matrix and the four or four port channel matrix respectively according to and the second two-port channel matrix in channel parameter
Corresponding queueing discipline is recombinated, and can be multiplexed the MIMO algorithms of dual-port.Channel parameter is put in order restructuring, i.e., according to the three or four port channel matrix H4011With the four or four port channel matrix H4012With the second two-port channel matrix H201One-to-one channel parameter queueing discipline restructuring.
The channel order of dual-port is：
Two-port channel matrix after corresponding simplification is：
The channel original order of four ports is：
It is corresponding it is simplified split after four port channel matrixes be：
The corresponding relation of the two-port channel matrix after four port channel matrixes and simplification after being split according to simplification：Two-port channel matrix (1-1), (1-2) correspond to four port channel matrix (2-1), (2-2) respectively, according to the correspondence position of the channel parameter in corresponding matrix, four port channels are arranged and is recombinated.
Four port channels order after restructuring is as follows：
Four port channel matrixes after according to simplification, four port channels after restructuring have some channel parameters to lose.
In step 407, multiplexing dual-port algorithm carries out signal detection, obtains the 4th data to the first data.
After recombinating four port channels, multiplexing dual-port algorithm carries out signal detection, on the basis of step 406, directly according to the dual-port algorithm after simplification, and the three or four port channel matrix H4011With the four or four port
Channel matrix H4012Obtain corresponding first variable X21With the second variable X22, according to the first variable X21With the second variable X22, obtain variable X2, and then obtain the 4th data X.That is multiplexing dual-port algorithm carries out signal detection to the first data, obtains the 4th data.
In step 408, to the 4th data Layer inverse mapping, QPSK demodulation, descrambling, solution rate-matched and decoding process, third time verification is then carried out, verified according to the CRC check method of four ports, if four port CRC checks pass through, into step 409.
If four port CRC checks do not pass through, this blind check failure comes back to step 400, and blind check is carried out again.
In step 409, this blind check success terminates flow.Information X and emission port the configuration quantity of Master Information Block MIB are can obtain according to blind check successful result：
If jumping to step 409 from step 403, blind check is successful, then emission port is 1；
If jumping to step 409 from step 405, blind check is successful, then emission port is 2；
If entering step 409 from step 408, blind check is successful, then emission port is 4.
It should be noted that descrambled to data, solved rate-matched and decoding, and the process such as CRC check, belong to prior art part, will not be repeated here, in order to avoid fuzzy subject of the present invention.
The embodiment of the present invention carries out simplifying treatment by a kind of PBCH channel blind detections method for the algorithm that blind check process is used, and the size of matrix is reduced, so as to reduce computational complexity.Meanwhile, the present invention carries out the treatment of simple possible to the channel matrix of four ports, has successfully been multiplexed the algorithm of dual-port, reduces the programming of developer and the workload of checking.
Specific embodiment above; the purpose of the present invention, technical scheme and beneficial effect are further described; should be understood that; these are only specific embodiment of the invention; the protection domain being not intended to limit the present invention; all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of PBCH channel blind detections method, it is characterised in that the described method comprises the following steps：
Signal detection is carried out to the first data according to single port algorithm, the second data are obtained, and to described
Second data carry out first time verification；
If the first time verification does not pass through, letter is carried out to first data according to dual-port algorithm
Number detection, obtain the 3rd data, and second verification is carried out to the 3rd data；
If second verification does not pass through, channel is recombinated；Multiplexing dual-port algorithm is to institute
Stating the first data carries out signal detection, obtains the 4th data；And the 4th data are carried out with third time
Verification；
If the third time verification passes through, blind check success.
2. method according to claim 1, it is characterised in that according to the dual-port algorithm pair
The the first two-port channel matrix answered carries out signal detection to the first data, after simplifying processing procedure, obtains
To the second two-port channel matrix, letter is carried out to the first data according to the second two-port channel matrix
Number detection calculate, obtain the 3rd data, and second verification is carried out to the 3rd data.
3. method according to claim 2, it is characterised in that according to single port algorithm to
It is further comprising the steps of before one data carry out signal detection：
Receive transmission data, and the data are carried out successively Digital Down Convert, digital-to-analogue conversion,
Time and Frequency Synchronization, go Cyclic Prefix, Fast Fourier Transform (FFT) and Resource Unit inverse mapping to process, obtain
To the first data；
Channel is estimated, the estimated result of channel parameter is obtained.
4. method according to claim 3, it is characterised in that if second verification is not
Pass through, channel is recombinated, specifically include following steps：
It is second by corresponding one or the four port channel matrix reduction of four port algorithms according to four port algorithms
Four port channel matrixes；
Two or the four port channel matrix-split is obtained into the three or four port channel matrix and the four or four end
Mouth channel matrix；
According to the three or the four port channel matrix and the four or four port channel matrix and second dual-port
The corresponding queueing discipline of channel parameter, recombinates to channel in channel matrix.
5. method according to claim 4, it is characterised in that the first time verification includes：
First time CRC check is carried out to second data according to single port cyclic redundancy check (CRC) algorithm.
6. method according to claim 4, it is characterised in that second verification includes：
Second CRC check is carried out to the 3rd data according to dual-port CRC algorithm.
7. method according to claim 4, it is characterised in that the third time verification includes：
Third time CRC check is carried out to the 4th data according to four port CRC algorithms.
8. method according to claim 5, it is characterised in that if first time verification is logical
Cross, then blind check success, second data are the data in the Master Information Block for solving, and emission port is 1.
9. method according to claim 6, it is characterised in that if verified for described second logical
Cross, then blind check success, the 3rd data are the data in the Master Information Block for solving, and emission port is 2.
10. method according to claim 7, it is characterised in that if third time verification is logical
Cross, then blind check success, the 4th data are the data in the Master Information Block for solving, and emission port is 4；
If the third time verification does not pass through, blind check failure receives the first data again, enters again
Row blind check.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112487470A (en) * | 2019-09-11 | 2021-03-12 | 浙江宇视科技有限公司 | Information verification method and device, terminal equipment and computer readable storage medium |
| CN115238830A (en) * | 2022-09-21 | 2022-10-25 | 广东柯内特环境科技有限公司 | Method for setting operation threshold of equipment, monitoring method and monitoring system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957494A (en) * | 2011-08-18 | 2013-03-06 | 上海华为技术有限公司 | Method for blind test calibration and related devices |
| CN103067144A (en) * | 2012-12-25 | 2013-04-24 | 电信科学技术研究院 | Iteration receiving method and equipment |
| US20140086173A1 (en) * | 2012-09-26 | 2014-03-27 | Interdigital Patent Holdings, Inc. | Methods, systems and apparatuses for operation in long-term evolution systems |
-
2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957494A (en) * | 2011-08-18 | 2013-03-06 | 上海华为技术有限公司 | Method for blind test calibration and related devices |
| US20140086173A1 (en) * | 2012-09-26 | 2014-03-27 | Interdigital Patent Holdings, Inc. | Methods, systems and apparatuses for operation in long-term evolution systems |
| CN103067144A (en) * | 2012-12-25 | 2013-04-24 | 电信科学技术研究院 | Iteration receiving method and equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112487470A (en) * | 2019-09-11 | 2021-03-12 | 浙江宇视科技有限公司 | Information verification method and device, terminal equipment and computer readable storage medium |
| CN112487470B (en) * | 2019-09-11 | 2024-04-05 | 浙江宇视科技有限公司 | Information verification method, device, terminal equipment and computer readable storage medium |
| CN115238830A (en) * | 2022-09-21 | 2022-10-25 | 广东柯内特环境科技有限公司 | Method for setting operation threshold of equipment, monitoring method and monitoring system |
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