CN107306141A - AF panel merges and noise balances combination treatment method and device - Google Patents

AF panel merges and noise balances combination treatment method and device Download PDF

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Publication number
CN107306141A
CN107306141A CN201610242807.5A CN201610242807A CN107306141A CN 107306141 A CN107306141 A CN 107306141A CN 201610242807 A CN201610242807 A CN 201610242807A CN 107306141 A CN107306141 A CN 107306141A
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noise
matrix
irc
functions
hardware resource
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邬钢
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Sanechips Technology Co Ltd
Shenzhen ZTE Microelectronics Technology Co Ltd
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Shenzhen ZTE Microelectronics Technology Co Ltd
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Priority to CN201610242807.5A priority Critical patent/CN107306141A/en
Priority to PCT/CN2017/078331 priority patent/WO2017181822A1/en
Publication of CN107306141A publication Critical patent/CN107306141A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • H04B1/126—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means having multiple inputs, e.g. auxiliary antenna for receiving interfering signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • 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
    • 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
    • H04B7/0413—MIMO systems
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B2001/1045—Adjacent-channel interference
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

Merge the combination treatment method and device balanced with noise the invention discloses a kind of AF panel, method includes：Determine that adjacent area interference strength is higher than interference strength threshold value, perform IRC functions；Determine that adjacent area interference strength is less than interference strength threshold value, NB functions are performed using the fractional hardware resource in the hardware resource for carrying IRC functions.

Description

AF panel merges and noise balances combination treatment method and device
Technical field
Merge the present invention relates to AF panel in wireless communication field and noise balancing technique, more particularly to strengthen A kind of AF panel merges in Long Term Evolution (LTE-Beyond) system receiver and noise balances Combined Treatment side Method and device.
Background technology
In 3GPP enhancing Long Term Evolution (LTE-B, LTE-Beyond) versions 11 (Release 11), The problem of there is the complex jamming environment under heterogeneous network, user equipment (UE) can be by from the strong of neighbor cell Interference.
In order to resist adjacent area strong jamming, receiver typically will merge (IRC, Interference using AF panel Rejection Combining) technology.Conventional method be in 3GPP agreements Minimum Mean Square Error (MMSE, Minimum Mean Square Error)-IRC.However, when UE is in the strongly disturbing region in no adjacent area, Mainly influenceed by noise, then need to close IRC functions, one can reduce processing complexity, reduction Power consumption, two can avoid the hydraulic performance decline that can bring in some scenarios；Meanwhile, if UE is used many days Line is received, it is necessary to is opened noise balance (NB, Noise Balance) function, is made UE multiple receptions day Line multiple making an uproar before multiple-input, multiple-output (MIMO, Multiple-Input Multiple-Output) detection is carried out Sound approximately equal, so that the performance of MIMO detections is more excellent.
For under the conditions of the how disturbance in heterogeneous environment, reasonably configuring multi-aerial receiver confrontation Interference and the processing mode of noise, to obtain optimal detection performance, and minimum processing complexity and power consumption, It there is no effective solution.
The content of the invention
The embodiment of the present invention provides a kind of AF panel and merged and noise balance combination treatment method and device, different Under the conditions of disturbance in network forming environment, can reasonably configuration receiver to anti-interference and noise processing side Formula, to obtain optimal detection performance, while being realized using minimum processing complexity and power consumption.
What the technical scheme of the embodiment of the present invention was realized in：
The embodiment of the present invention provides a kind of AF panel and merges the combination treatment method balanced with noise, methods described Including：
Determine that adjacent area interference strength is higher than interference strength threshold value, perform AF panel and merge (IRC) function；
Determine that adjacent area interference strength is less than interference strength threshold value, using in the hardware resource for carrying the IRC functions Fractional hardware resource perform noise balance (NB) function.
Preferably, the execution IRC functions, including：
Input nonlinearities noise covariance battle array R；
The interference noise covariance matrix R is decomposed and upper triangular matrix is inverted；
Whitening processing is carried out to channel estimation H and reception signal Y；
Multiple-input, multiple-output (MIMO) detection is carried out based on whitening processing result.
Preferably, methods described also includes：
Pass through the reception of resource location where cell reference signals (CRS) or user reference signal (UERS) Signal, abatement obtains multiple samples after going the channel response of correspondence position and the product of reference signal, based on sample Averagely obtain the interference noise covariance matrix R.
Preferably, it is described interference noise covariance matrix R to be decomposed and upper triangular matrix is inverted, including：
The interference noise covariance matrix R is decomposed into the transposition of lower triangular matrix V and the lower triangular matrix Matrix VHProduct；
To the transposed matrix V of the lower triangular matrixHInverted.
Preferably, the fractional hardware resource using in the hardware resource for carrying the IRC functions performs NB Function, including：
Input nonlinearities noise covariance battle array R, obtains noise matrix N；
Using interference noise covariance matrix R is decomposed in the hardware resource for carrying the IRC functions and on The fractional hardware resource that triangular matrix is inverted, asks noise matrix N progress evolutions and obtains noise balance square Battle array；
Made an uproar using the fractional hardware resource that whitening processing is carried out in the hardware resource for carrying the IRC functions to described Phono-equalizer unit matrix carries out noise Balance Treatment；
Using the fractional hardware resource of progress MIMO detections in the hardware resource for carrying the IRC functions to making an uproar Phono-equalizer unit result carries out MIMO detections.
Preferably, the MIMO detections include：Minimum Mean Square Error (MMSE) is detected；Maximum likelihood (ML) Detection；Globular decoding (SD) is detected.
Second aspect, the embodiment of the present invention provides a kind of AF panel and merges the Combined Treatment dress balanced with noise Put, described device includes：
IRC modules, for determining that adjacent area interference strength is higher than interference strength threshold value, perform IRC functions；
NB modules, for determining that adjacent area interference strength is less than the second interference strength threshold value, using carrying the IRC Fractional hardware resource in the hardware resource of function performs NB functions.
Preferably, the IRC modules, are additionally operable to input nonlinearities noise covariance battle array R；To the interference noise Covariance matrix R is decomposed and upper triangular matrix is inverted；Albefaction is carried out to channel estimation H and reception signal Y Processing；MIMO detections are carried out based on whitening processing result.
Preferably, the IRC modules, are additionally operable to the reception by resource location where CRS or UERS Signal, abatement obtains multiple samples after going the channel response of correspondence position and the product of reference signal, based on sample Averagely obtain the interference noise covariance matrix R.
Preferably, the IRC modules, are additionally operable to the interference noise covariance matrix R being decomposed into lower triangle The transposed matrix V of matrix V and the lower triangular matrixHProduct；To the transposed matrix V of the lower triangular matrixH Inverted.
Preferably, the NB modules, are additionally operable to input nonlinearities noise covariance battle array R, obtain noise matrix N；
The NB modules, are additionally operable to utilize in the hardware resource for carrying the IRC functions to interference noise association side The fractional hardware resource that poor battle array R is decomposed and upper triangular matrix is inverted, is opened the noise matrix N Side, which is asked, obtains noise balancing matrix；
The NB modules, are additionally operable to utilize progress whitening processing in the hardware resource for carrying the IRC functions Fractional hardware resource carries out noise Balance Treatment to the noise balancing matrix；
The NB modules, are additionally operable to utilize progress MIMO detections in the hardware resource for carrying the IRC functions Fractional hardware resource to noise balance result carry out MIMO detections.
The embodiment of the present invention uses Combined Treatment structure, can be according to the characteristics of interference from optimal processing mode Skill, reduction processing complexity, the purpose of reduction power consumption, it is to avoid perform the hydraulic performance decline that IRC functional bands are come always The problem of；Also, carrying the hardware resource of IRC functions can be realized using programmable hardware, due to NB work( It can completely be multiplexed the hardware resource of carrying IRC functions to realize, without individually setting to realize NB functions Hardware resource is counted, the hardware resource for the Combined Treatment for realizing IRC functions and NB functions is saved, and then reduce Power consumption, and realize the area of the hardware chip of hardware resource.
Brief description of the drawings
Fig. 1 is AF panel merging and the configuration diagram of the Combined Treatment of noise balance in the embodiment of the present invention；
Fig. 2 a and Fig. 2 b are MMSE-IRC and whitening processing MMSE performance comparison schematic diagrames；
Fig. 3 is AF panel merging and the structural representation of the combined apparatus of noise balance in the embodiment of the present invention Figure.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be described in further detail.It should be appreciated that this place The specific embodiment of description only to explain the present invention, is not intended to limit the present invention.
It is below in conjunction with the accompanying drawings and specific real for the object, technical solutions and advantages of the present invention are more clearly understood Apply example to be described in further detail technical scheme of the present invention, so that those skilled in the art can be more Good understanding is of the invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.Need explanation , in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
Technical problem to be solved of the embodiment of the present invention is to merge flat with noise by providing a kind of AF panel Weigh combination treatment method and device, solves under the conditions of the disturbance in network forming environment, realizes that receiver confrontation is dry The Different treatments with noise are disturbed, to obtain optimal detection performance, while using minimum processing complexity Realized with power consumption, AF panel merges and noise balance combined apparatus can be integrated using hardware resource The mode of circuit chip is realized, as an example, the implementation that hardware resource can be used includes special integrated electricity Road (ASIC), logic programmable gate array (FPGA) or CPLD (CPLD, Complex Programmable Logic Device), AF panel merges in actual implementation and noise balances combined apparatus It can apply in the multi-aerial receiver of UE or base station.
The embodiment of the present invention proposes that a kind of AF panel merges the combination treatment method balanced with noise, such as Fig. 1 institutes Show, its key point is to use Combined Treatment structure, including：There is strong adjacent area interference (for example, adjacent area is disturbed Intensity be higher than interference strength threshold value) situation when, perform AF panel merge (IRC) function；When adjacent area is dry When the principal element for disturbing very weak (for example, less than interference strength threshold value) namely influence reception signal is noise, The fractional hardware resource (can reduce power consumption) closed in the hardware resource of carrying IRC functions, performs IRC work( The fractional hardware resource being not turned off in the hardware resource of energy performs NB functions, that is, multiplexing carrying IRC functions Fractional hardware resource realize NB functions.
IRC functions are performed to resist during the strong jamming of adjacent area, the method handled using noise whitening, with physical down Synchronization control channel (PDSCH) is received exemplified by signal, and it is interference I now to receive the influence factor in signal Y With noise N, Cholescy decomposition first is carried out to the covariance matrix R of interference and noise and upper triangular matrix is inverted, Then docking is collected mail number and channel estimation carries out whitening processing, obtains whitening processing result (including after whitening processing Reception signalAnd the channel estimation after whitening processing), MIMO inspections are carried out based on whitening processing result Survey operation.
When performing NB functions to carrying out noise balance, the mainly noise, adjacent area for now influenceing signal to receive Interference is considered as zero, and interference and the covariance matrix R of noise essentially become noise matrix N, NB function so Realize：First, it is used to perform Cholescy decomposition and upper three angular moment in the hardware resource of multiplexing carrying IRC functions The fractional hardware resource that battle array is inverted, noise balancing matrix is obtained to ask noise matrix N progress evolutions；Then, Due to carrying out processing mode and the processing of the whitening processing in IRC functions of noise balance based on noise balancing matrix Mode is identical, therefore it is next that the fractional hardware resource of whitening processing is carried out in the hardware resource of multiplexing carrying IRC functions Noise balance is carried out to noise balancing matrix；Similarly, the realization side of the MIMO detections carried out for different inputs Formula is also consistent, therefore it is hard that the part of MIMO detections is carried out in the hardware resource of multiplexing carrying IRC functions Part resource to carry out MIMO detections to noise balance result.
Can be seen that based on the Combined Treatment structure shown in Fig. 1 can be according to the characteristics of interference from optimal processing Mode；In addition, the hardware resource of carrying IRC functions can be realized using foregoing programmable hardware, due to NB functions can be multiplexed completely carrying IRC functions hardware resource to realize, save realize IRC functions and The hardware resource of the Combined Treatment of NB functions, saves the area for setting hardware chip.
The following detailed description of how based on IRC functions and NB functions progress Combined Treatment.
1st, IRC functions
As shown in figure 1, IRC functions include input nonlinearities noise covariance battle array R, amendment and normalization, to R Carry out Cholesky decomposition and upper triangular matrix is inverted, whitening processing and MIMO are detected.
Assuming that the transmission signal on each subcarrier is X, channel estimation H, adjacent area interference is I, noise (square Battle array) it is N, receive signal Y and be represented by：
Y=HX+I+N (1)
The conventional MMSE-IRC functions that correlation technique is provided can be expressed as：
R in expression formula (2) (is referred to as interference noise covariance square for the covariance matrix of interference and noise Battle array), by being obtained after auto-correlation, then multiple sample means are asked after cell signal is cut down, interference noise association side Poor matrix R expression formula is：
WhereinPDSCH Data Position if adjacent area strong jamming (interference strength be more than interference Intensity threshold) exist, it is difficult to interference noise covariance matrix R is obtained by cell data demodulation, and needed logical Cross cell reference signals (CRS, Cell Reference Signal) or user reference signal (UERS, User Equipment Reference Signal) where resource location reception signal, abatement go the reference of the position to believe The multiple sample means processing obtained after number is obtained.
The process that UE performs IRC functions is such：To R gusts of progress cholescy of interference noise covariance matrix Decompose, including：Interference noise covariance matrix R is decomposed into the transposition of lower triangular matrix V and lower triangular matrix Matrix VHProduct, expression formula is：R=VHV.To the transposed matrix V of lower triangular matrixHNamely upper triangle Matrix VHInversion operation is carried out, expression formula is:U=(V)-H。
So, the representation for the IRC results that formula (2) is shown can be transformed to such as formula (4) institute The MMSE detections (one kind of MIMO detections) shown：
Wherein,WithIt is the expression formula of whitening processing, it can be seen that formula (2) is shown The result of MMSE_IRC functions can be using whitening processing result (including the reception signal after whitening processingAnd the channel estimation after whitening processing) combine adjacent area interference I to represent：The collection of letters number and letter are docked first Road estimation carries out whitening processing, is then based on whitening processing result (at the reception signal and albefaction after whitening processing Channel estimation after reason) combine adjacent area interference I and do the processing obtained by MMSE detections according to formula (4) As a result, the MMSE_IRC function results with formula (2) are consistent.
In cholescy decomposition and upper triangular matrix inversion process, for the element v in lower triangular matrix ViiUsing Following algorithm：
(i is reception antenna number) (5)
To upper triangular matrix VHInvert, the element u in inverse matrix UiiIt is expressed as：
Whitening processing is carried out to channel estimation H and reception signal Y afterwards：
It is finally based on whitening processing result and carries out MIMO detections.Why whitening processing is wanted in the present embodiment, and IRC functions are directly performed without formula (2), are in order that being used in the hardware resource of carrying IRC functions white Change the fractional hardware resource of processing, except that be able to can also be possible to for used during MMSE detections MIMO detections are lower to be multiplexed, such as is used when being detected for maximum likelihood (ML, Maximum Likelihood), Or used during for globular decoding (SD, Sphere Decoding) detection detection, the expression of ML/SD processing Formula is：
As can be seen that being related to whitening processing in formula (11), therefore, carrying ML/SD detects the hard of function The fractional hardware resource that part resource can be multiplexed in the hardware resource of carrying IRC functions for whitening processing is carried out in vain Change is handled, and is then based on the whitening processing result correspondence progress ML detections that the fractional hardware resource of multiplexing is exported Or SD detections, so as to being used for whitening processing fractional hardware resource in the hardware resource of carrying IRC functions Multiplexing, saves hardware resource, reduces the area that hardware realizes (being such as integrated into chip).
Concrete operations flow can be summarized as shown in table 1：
Table 1
2nd, NB functions
The expression formula of conventional NB functions that correlation technique is provided is：
Wherein,
So that UE uses 2 reception antennas as an example, as the dotted line in Fig. 1 is identified, the interference noise association side of input Poor matrix R main diagonal element corresponds to the noise of each reception antenna respectively, therefore noise matrix N can be represented For that is,：
To noise matrix N after evolution asks down processing, 1/sqrt () processing is designated in Fig. 1, output U is：
Carry out whitening processing, the expression formula of whitening processing：
UY=UHX+UN (15)
The expression formula for so carrying out MMSE detections (MIMO detections are a kind of) based on whitening processing result is：
The expression formula for carrying out ML detections (one kind of MIMO detections) based on whitening processing result is：
WhereinAs can be seen here, ML detections are related to whitening processing, therefore can be multiplexed Carrying is used for the fractional hardware resource (hardware resource) for carrying out whitening processing, NB in the hardware resource of IRC functions The processing difference of function and IRC functions is the fractional hardware resource that dotted line frame is identified in Fig. 1, carries RC work( It is used to carry out the fractional hardware resource that Cholescy decomposition and upper triangular matrix are inverted in the hardware resource of energy, in multiplexing Fractional hardware resource is only carried out during NB functions to perform, to complete the calculation function that evolution is asked down, that is, it is right Noise matrix carries out evolution and asks and obtains noise balancing matrix, and be related to when performing NB functions to noise square Battle array is carried out at noise Balance Treatment (equivalent to whitening processing is carried out), the albefaction performed during with performing IRC functions Reason is identical, therefore can be multiplexed the fractional hardware resource in the hardware resource of carrying IRC functions for whitening processing Noise Balance Treatment (equivalent to whitening processing is carried out) is carried out to noise matrix, and utilization carries IRC functions The fractional hardware resource that MIMO detections are carried out in hardware resource carries out MIMO detections to noise balance result. So, the hardware resource of carrying IRC functions can be multiplexed when performing NB functions completely to realize, so as to save Hardware resource, saves chip area.
To sum up, NB functions implement flow and can be summarized as shown in table 2：
Table 2
The embodiment of the present invention provides a kind of AF panel and merges the combined apparatus balanced with noise, can set In the multi-aerial receiver of UE or base station.As shown in figure 3, AF panel merges and combining that noise is balanced Processing unit includes：
IRC modules 100, for running into strong adjacent area interference (for example, adjacent area interference strength is higher than interference strength Threshold value) situation when, perform IRC functions；
NB modules 200, for disturbing very weak (for example, less than the second interference strength threshold value, with interference when adjacent area Intensity threshold is identical, or less than interference strength threshold value), multiplexing carries the portion in the hardware resource of IRC functions Hardware resource is divided to perform NB functions.
IRC modules 100 and NB modules 200 can use ASIC, CPLD or FPGA to realize, so as to It is encapsulated as chip.
The detailed process that IRC modules 100 perform IRC functions comprises the following steps：
Step 101, input nonlinearities noise covariance battle array R；Exemplified by receiving PDSCH signals, in PDSCH Data Position exist if adjacent area strong jamming (interference strength be more than interference strength threshold value), it is difficult to by small Area's data demodulation obtains interference noise covariance matrix R, therefore IRC modules 100 pass through CRS or UERS The reception signal of place resource location, abatement goes the multiple sample means processing obtained after the reference signal of the position Obtain interference noise covariance matrix R.
In practical application, multiple antennas is also implemented with channel estimation module in receiving, and channel estimation module is responsible for calculating The noise matrix N of interference noise covariance matrix R and the NB module 200 of IRC modules 100, and It is supplied to IRC modules 100 and NB modules 200.
Step 102, IRC modules 100 are decomposed to interference noise covariance matrix R and upper triangular matrix is asked It is inverse；Interference noise covariance matrix R is decomposed into the transposed matrix V of lower triangular matrix V and lower triangular matrixH's Product, expression formula is：R=VHV.To the transposed matrix V of lower triangular matrixHNamely upper triangular matrix VHEnter Row inversion operation, expression formula is:U=(V)-H。
Step 103, whitening processing is carried out to channel estimation H and reception signal Y.
Step 104, MIMO detections are carried out based on whitening processing result.
Wherein, it can be set in IRC modules 100 and distinguish corresponding submodule with above-mentioned steps 101 to step 104 Block is performed with correspondence.
The implementation process that NB modules 200 perform NB functions comprises the following steps：
Step 201, input nonlinearities noise covariance battle array R, obtains noise matrix N, referring specifically to formula (13).
Step 202, carrying IRC functions hardware resource in interference noise covariance matrix R is decomposed and The fractional hardware resource that upper triangular matrix is inverted, that is, it is used to perform the portion of step 102 in IRC modules 100 Divide hardware resource, noise matrix N progress evolutions are asked and obtain noise balancing matrix.
Step 203, the fractional hardware resource of whitening processing is carried out in the hardware resource of carrying IRC functions, also It is the fractional hardware resource for being used in IRC modules 100 perform step 103, to input signal and channel estimation Carry out noise Balance Treatment.
Step 204, the fractional hardware resource of MIMO detections is carried out in the hardware resource of carrying IRC functions, It is exactly to be used to performing the fractional hardware resource of step 104 in IRC modules 100 that result is balanced to noise is (including white Reception signal after change processingAnd the channel estimation after whitening processing) carry out MIMO detections.
It can be provided as can be seen that NB modules 200 perform NB functions by being multiplexed the hardware of IRC modules 100 Source and realize, without for NB modules 200 set hardware resource, save the area of integrated chip, Reduce overall power.
Below to verifying that the beneficial effect of the embodiment of the present invention is illustrated.
Illustrate the embodiment of the present invention below by the emulation to lte-a system (Release 11) receiver Beneficial effect.Specific simulated conditions are with reference to the test case for transmitting diversity in 3GPP standards：8.2.1.2.4-1: Transmit diversity Performance (FRC) with TM3interference model, major parameter is： 10M bandwidth, channel EVA70, main plot transmission mode TM2, moving exchanging center MSC Mobile Switching Center)=6, cell ID=0,2 interfered cell transmission mode TM3, interfered cell 80% probability is Rank1, and 20% probability is Rank2, cell ID=1/2,70% handling capacity (Throughput) Locate Signal to Interference plus Noise Ratio (SINR, Signal to Interference plus Noise Ratio) requirement -1.4dB.
When interfered cell is opened, compare MMSE-IRC receivers and whitening processing MMSE receivers (after Person is provided with that AF panel provided in an embodiment of the present invention merges and noise balances combined apparatus) handling capacity Performance, as shown in Figure 2 a, both performances are identical for simulation result, and this is consistent with formula (4).
When interfered cell is closed, compare formula (12) conventional NB functions Russia and the embodiment of the present invention it is white Changing NB receivers, (the latter is provided with AF panel merging provided in an embodiment of the present invention and noise balance joint Manage device, can be realized by being multiplexed the hardware resource of whitening processing MMSE receivers) throughput performance, As shown in Figure 2 b, both performances are identical for simulation result, and this is also consistent with formula (16).
Two kinds of receivers are counted as shown in table 3 relative to the complexity of MMSE receivers.MMSE-IRC Relative to the increased H of albefaction MMSE receivers institute in receiverHR-1Operation is that each subcarrier will be done, Increase the reception signal for each subcarrier relative to MMSE-IRC receivers in albefaction MMSE receivers Y and channel estimation H premultiplication U whitening processing operation, premultiplication operating result is UY and UH；And cholescy Decompose and upper triangle is inverted and carried out once just for each resource block (RB, Resource Block).Can be with Although finding out to add the evolution of a small amount of RB ranks and ask and having bad luck calculation, whitening processing MMSE receiver ratios The multiplication quantity of MMSE-IRC receivers reduces about half, and the complexity for performing IRC functions is able to very big drop It is low.
Table 3 is shown in each RB relative to the increased amount of calculation statistics of MMSE receivers institute：
Multiplication Addition Ask down Evolution
MMSE-IRC 2688 2304 2 0
Albefaction MMSE 1229 917 4 4
Table 3
Meanwhile, the calculating of the conventional NB of formula (12) and NB receivers provided in an embodiment of the present invention is complicated Spend relative to the computation complexity all very littles for performing IRC functions.So, Integrated comparative gets off, and the present invention is implemented The AF panel that example is proposed merges and noise balance combination treatment method has relatively low computation complexity, Neng Gouxian Write and save hardware resource.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, Any one skilled in the art the invention discloses technical scope in, can readily occur in change or Replace, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the power The protection domain that profit is required is defined.

Claims (11)

1. a kind of AF panel merges the combination treatment method balanced with noise, it is characterised in that methods described Including：
Determine that adjacent area interference strength is higher than interference strength threshold value, perform AF panel and merge IRC functions；
Determine that adjacent area interference strength is less than the interference strength threshold value, utilize the hardware for carrying the IRC functions Fractional hardware resource in resource performs noise balance NB functions.
2. the method as described in claim 1, it is characterised in that the execution IRC functions, including：
Input nonlinearities noise covariance battle array R；
The interference noise covariance matrix R is decomposed and upper triangular matrix is inverted；
Whitening processing is carried out to channel estimation H and reception signal Y；
Multiple-input, multiple-output MIMO detections are carried out based on whitening processing result.
3. the method as described in claim 1, it is characterised in that methods described also includes：
Believed by the reception of resource location where cell reference signals CRS or user reference signal UERS Number, abatement obtains multiple samples after going the channel response of correspondence position and the product of reference signal, based on sample Averagely obtain the interference noise covariance matrix R.
4. the method as described in claim 1, it is characterised in that
It is described interference noise covariance matrix R to be decomposed and upper triangular matrix is inverted, including：
The interference noise covariance matrix R is decomposed into turn of lower triangular matrix V and the lower triangular matrix Put matrix VHProduct；
To the transposed matrix V of the lower triangular matrixHInverted.
5. the method as described in claim 1, it is characterised in that described utilize carries the IRC functions Hardware resource in fractional hardware resource perform noise balance NB functions, including：
Input nonlinearities noise covariance battle array R, obtains noise matrix N；
Using being decomposed in the hardware resource for carrying the IRC functions to interference noise covariance matrix R and The fractional hardware resource that upper triangular matrix is inverted, to the noise matrix N carry out evolution ask obtain noise put down Weigh matrix；
Using the fractional hardware resource of progress whitening processing in the hardware resource for carrying the IRC functions to described Noise balancing matrix carries out noise Balance Treatment；
Using the fractional hardware resource of progress MIMO detections in the hardware resource for carrying the IRC functions to making an uproar Phono-equalizer unit result carries out MIMO detections.
6. the method as described in claim 1, it is characterised in that
The MIMO detections include：Minimum Mean Square Error MMSE is detected；Maximum likelihood ML is detected；Ball Shape decoding SD detections.
7. a kind of AF panel merges the combined apparatus balanced with noise, it is characterised in that described device Including：
IRC modules, for determining that adjacent area interference strength is higher than interference strength threshold value, perform AF panel and merge IRC functions；
NB modules, it is described using carrying for determining that adjacent area interference strength is less than the interference strength threshold value Fractional hardware resource in the hardware resource of IRC functions performs noise balance NB functions.
8. device as claimed in claim 7, it is characterised in that
The IRC modules, are additionally operable to input nonlinearities noise covariance battle array R；To the interference noise covariance Battle array R is decomposed and upper triangular matrix is inverted；Whitening processing is carried out to channel estimation H and reception signal Y； Multiple-input, multiple-output MIMO detections are carried out based on whitening processing result.
9. device as claimed in claim 7, it is characterised in that
The IRC modules, are additionally operable to by cell reference signals CRS or user reference signal UERS The reception signal of place resource location, abatement goes after the channel response of correspondence position and the product of reference signal to obtain To multiple samples, the interference noise covariance matrix R is obtained based on sample mean.
10. device as claimed in claim 7, it is characterised in that
The IRC modules, are additionally operable to the interference noise covariance matrix R being decomposed into lower triangular matrix V With the transposed matrix V of the lower triangular matrixHProduct；To the transposed matrix V of the lower triangular matrixHCarry out Invert.
11. device as claimed in claim 7, it is characterised in that
The NB modules, are additionally operable to input nonlinearities noise covariance battle array R, obtain noise matrix N；
The NB modules, are additionally operable to utilize and interference noise are assisted in the hardware resource for carrying the IRC functions The fractional hardware resource that variance matrix R is decomposed and upper triangular matrix is inverted, enters to the noise matrix N Row evolution, which is asked, obtains noise balancing matrix；
The NB modules, are additionally operable to using carrying out whitening processing in the hardware resource for carrying the IRC functions Fractional hardware resource to the noise balancing matrix carry out noise Balance Treatment；
The NB modules, are additionally operable to utilize progress MIMO inspections in the hardware resource for carrying the IRC functions The fractional hardware resource of survey carries out MIMO detections to noise balance result.
CN201610242807.5A 2016-04-18 2016-04-18 AF panel merges and noise balances combination treatment method and device Pending CN107306141A (en)

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