CN103701736A - Interference inhibiting method and device in LTE (long term evolution) system - Google Patents
Interference inhibiting method and device in LTE (long term evolution) system Download PDFInfo
- Publication number
- CN103701736A CN103701736A CN201310752937.XA CN201310752937A CN103701736A CN 103701736 A CN103701736 A CN 103701736A CN 201310752937 A CN201310752937 A CN 201310752937A CN 103701736 A CN103701736 A CN 103701736A
- Authority
- CN
- China
- Prior art keywords
- disturbed
- subframe
- ofdm symbol
- interference matrix
- ofdm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention provides an interference inhibiting method and device in an LTE (long term evolution) system. The method comprises the steps of determining the interfered position in a sub-frame; calculating an interference matrix by using the interfered position; performing interference inhibiting on the sub-frame according to the interference matrix. The accuracy of interference inhibiting can be improved.
Description
Technical field
The application relates to technical field of measurement and test, particularly relates to disturbance restraining method and device in a kind of Long Term Evolution (Long Term Evolution, LTE) system.
Background technology
In real network planning, LTE system adopts identical networking mode more, in system, can produce co-channel interference.In addition; because LTE system also needs with the communication system of other standards adjacent; therefore; also often can be subject to TD SDMA (Time Division-Synchronous Code Division Multiple Access; TD-SCDMA), global system for mobile communications (Global System for Mobile Communications; spuious or the Intermodulation Interference of system such as GSM), the service quality to LTE, especially uplink service causes harmful effect.
At present, in LTE receiver, adopt interference rejection to merge (Interference Rejection Combining, IRC) algorithm more and suppress disturbing, IRC equalization algorithm formula is as follows:
x＝(H
HSH+C)
-1H
HSy；
Wherein, x is equilibrium result, and y is aerial signal, and H is channel estimation results, that is, and and channel estimation value,
and
for N
r* N
rinterference noise covariance matrix;
for N
t* N
tthe covariance matrix that transmits, N
rfor reception antenna number, N
tfor number of transmit antennas.The key of this algorithm is to obtain H, C more accurately
n, and S.
In the prior art, by two frequency pilot signs in a subframe, calculate H and the S of whole subframe, or by the frequency pilot sign in front 7 OFDM symbols of a subframe, calculate H and the S of front 7 OFDM symbols, by the frequency pilot sign in rear 7 OFDM symbols of a subframe, calculate H and the S of rear 7 OFDM symbols.
In actual test process, LTE system also can be subject to the spuious or Intermodulation Interference of other system, uses interference mechanism method of the prior art, disturbs the accuracy suppressing not high.
Summary of the invention
The application's technical problem to be solved is to provide disturbance restraining method and the device in a kind of LTE system, can improve and disturb the accuracy suppressing.
In order to address the above problem, the application discloses the disturbance restraining method in a kind of LTE system, comprising: determine the position being disturbed in subframe; With the position being disturbed, calculate interference matrix; According to interference matrix, subframe is disturbed to inhibition.
Preferably, determine that the position being disturbed in subframe comprises: determine the orthogonal frequency division multiplex OFDM symbol being disturbed in subframe; With the position being disturbed, calculating interference matrix comprises: use the OFDM sign computation interference matrix being disturbed.
Preferably, determine the OFDM symbol being disturbed in subframe, comprising: determine that two frequency pilot signs in subframe are all interfered; The OFDM sign computation interference matrix that use is disturbed, comprising: use two frequency pilot signs in subframe to calculate interference matrix and channel estimation value.
Preferably, determine the OFDM symbol being disturbed in subframe, comprising: determine that the first frequency pilot sign in subframe is interfered, the second frequency pilot sign in subframe is not interfered; The OFDM sign computation interference matrix that use is disturbed, comprising: use the first frequency pilot sign to calculate interference matrix, use the second frequency pilot sign to calculate channel estimation value.
Preferably, determine the OFDM symbol being disturbed in subframe, comprising: determine that two frequency pilot signs in subframe are not all interfered, determine that N OFDM data symbol in subframe is interfered, wherein, N is positive integer; The OFDM sign computation interference matrix that use is disturbed, comprising: use N OFDM data sign computation interference matrix, use two frequency pilot signs to calculate channel estimation value.
Preferably, according to interference matrix, subframe is disturbed to inhibition, comprising:
Use following formula to disturb inhibition to the OFDM symbol being disturbed in subframe:
x＝(H
HSH+C)
-1H
HSy；
Wherein, x is equilibrium result, and y is aerial signal, and H is channel estimation results, interference matrix
for N
r* N
rinterference matrix covariance matrix;
for N
t* N
tthe covariance matrix that transmits, N
rfor reception antenna number, N
tfor number of transmit antennas.
Preferably, determine that the OFDM symbol being disturbed in subframe comprises: the power that detects each OFDM symbol in subframe; Whether the difference that judges the power of the OFDM symbol in subframe and the power of the 2nd OFDM symbol in subframe is greater than first threshold, and wherein, an OFDM symbol is the OFDM symbol of power minimum in subframe; If so, determine that the 2nd OFDM symbol is the OFDM symbol being disturbed.
Preferably, determine that the OFDM symbol being disturbed in subframe comprises: the power that detects each OFDM symbol in subframe; Determine the mean value of the power of OFDM symbol in subframe; Judge whether the 3rd power of OFDM symbol and the difference of mean value in subframe are greater than first threshold; If so, determine that the 3rd OFDM symbol is the OFDM symbol being disturbed.
In order to address the above problem, the application discloses the interference suppression equipment in a kind of LTE system, comprising: determining unit, for the position of determining that subframe is disturbed; Computing unit, for calculating interference matrix with the position being disturbed; Disturb and suppress unit, for according to interference matrix, subframe is disturbed to inhibition.
Preferably, the orthogonal frequency division multiplex OFDM symbol of determining unit for determining that subframe is disturbed; Computing unit is for being used the OFDM sign computation interference matrix being disturbed.
Compared with prior art, the application has the following advantages:
In this application, first determine the position being disturbed in subframe, and calculate interference matrix S according to the position being disturbed, then, use S to disturb inhibition to subframe.S is calculated in the position being disturbed by use, realizes and accurately estimates S, and S can improve the accuracy of disturbing inhibition accurately, and therefore, the application can play and improve the effect of disturbing the accuracy suppressing.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram of the GSM frame structure of prior art;
Fig. 2 is according to the schematic diagram of the LTE frame structure of prior art;
Fig. 3 is according to the schematic diagram of LTE frame of the prior art and the overlapping the first situation of GSM frame;
Fig. 4 is according to the schematic diagram of LTE frame of the prior art and the overlapping the second situation of GSM frame;
Fig. 5 is according to the schematic diagram of LTE frame of the prior art and overlapping the third situation of GSM frame;
Fig. 6 is according to the flow chart of the disturbance restraining method in a kind of LTE system of the embodiment of the present invention one;
Fig. 7 is according to the structured flowchart of the interference suppression equipment in a kind of LTE system of the embodiment of the present invention three.
Embodiment
For the application's above-mentioned purpose, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the application is described in further detail.
In the prior art, LTE system may be received the interference of other standard systems.Take gsm system as example, and the band downlink of gsm system is 935～960MHz, if the emission system linearity is inadequate, may produce 2 subharmonic, and harmonic frequency is 1870～1920, and this is just in time the F-band of LTE.If the isolation between antennas of GSM antenna and LTE is not high, the harmonic wave of GSM just may produce strong jamming to LTE system uplink data.
Figure 1 shows that the frame structure of GSM, wherein, the basic time slot of GSM is 0.577ms, and Fig. 2 is the frame assumption diagram of LTE system, and as shown in Figure 2, the basic time slot of LTE system is 1ms; Therefore, GSM just may have following 3 kinds of stack situations with the channel of LTE:
1, as shown in Figure 3, part GSM time slot is with the stack of LTE sub-frame of uplink, and GSM only interferes with a frequency pilot sign of LTE sub-frame of uplink;
2, as shown in Figure 4, all GSM time slot is all with the stack of LTE sub-frame of uplink, and two frequency pilot signs of LTE sub-frame of uplink are all interfered;
3, as shown in Figure 5, only have small part GSM with the stack of LTE sub-frame of uplink, GSM does not interfere with the frequency pilot sign of LTE sub-frame of uplink;
For the 1st kind and the 2nd kind of situation, in LTE system, at least can there is the pilot tone can be for estimating S; But, not all data symbol is all interfered, and prior art is used same s-matrix to disturb inhibition to all data symbols, may produce extra inhibition to the data symbol not being interfered, reduced and disturbed the accuracy suppressing, affected the quality of transfer of data.For the 3rd kind of situation, because pilot tone is not interfered, so the S that uses pilot tone to estimate is inaccurate, has reduced and disturbed the accuracy suppressing.
In order to address the above problem, the interference that the application proposes in a kind of LTE system suppresses scheme, in this scheme, first determine the position being disturbed in subframe, according to the position being disturbed, calculate interference matrix S, thereby can accurately estimate S, use S accurately can improve the accuracy of disturbing inhibition.
With reference to Fig. 6, show the disturbance restraining method in a kind of LTE system of the application, the inter-system interference that the method can be subject to for suppressing LTE system.The method can be used in base station in LTE system.As shown in Figure 6, the method comprises:
Step 602, determines the position being disturbed in subframe.
When specific implementation, can be with OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbol is that granularity is determined the position being disturbed in subframe, can be also to take other unit to determine the position being disturbed in subframe as granularity.The present embodiment be take OFDM symbol and is described as example, and other unit also can adopt similar mode, does not repeat them here.
When usining OFDM symbol during as granularity, can determine in a subframe, whether each OFDM symbol is interfered, also can only judge whether two frequency pilot signs in this subframe are interfered, if two pilot signals are and are interfered, can further judge whether other OFDM symbols in this subframe are interfered.
In a preferred embodiment of the embodiment of the present invention, one of can be in the following manner determine the position being disturbed in subframe:
The power of each OFDM symbol in mode one, detection subframe; Whether the difference that judges the power of the OFDM symbol in subframe and the power of the 2nd OFDM symbol in subframe is greater than first threshold, and wherein, an OFDM symbol is the OFDM symbol of power minimum in subframe; If so, determine that the 2nd OFDM symbol is the OFDM symbol being disturbed, otherwise, determine that the 2nd OFDM symbol is interference-free OFDM symbol.
The power of each OFDM symbol in mode two, detection subframe; Determine the mean value of the power of OFDM symbol in subframe; Judge whether the 3rd power of OFDM symbol and the difference of mean value in subframe are greater than first threshold; If so, determine that the 3rd OFDM symbol is the OFDM symbol being disturbed, otherwise, determine that the 3rd OFDM symbol is interference-free OFDM symbol.
By the way, can determine easily which OFDM symbol is the symbol being disturbed
Step 604, calculates interference matrix with the position being disturbed.
When usining OFDM symbol during as granularity, can use the OFDM sign computation interference matrix being disturbed.
When two frequency pilot signs in a subframe are all interfered, can use these two frequency pilot signs to calculate interference matrix and channel estimation value, the mode of calculating can adopt existing computational methods, does not repeat them here.In the present embodiment, with the frequency pilot sign being interfered, calculate interference matrix, thereby improved the accuracy of interference matrix, as previously mentioned, disturb the effect of inhibition relevant with the accuracy of S, therefore, along with the raising of the accuracy of interference matrix, disturb the effect suppressing also to improve thereupon.
The first frequency pilot sign in subframe is interfered, and when the second frequency pilot sign is not interfered, uses the first frequency pilot sign of receiving interference to calculate interference matrix, uses the second frequency pilot sign of not receiving interference to calculate channel estimation value.In the present embodiment, the pilot signal that use is interfered is calculated interference noise, use the pilot signal of not receiving interference to calculate channel estimation value, this has improved the accuracy of interference matrix and channel estimation value simultaneously, as previously mentioned, disturb the effect suppressing relevant with the accuracy of S and H, therefore, along with the raising of the accuracy of interference matrix and channel estimation value, disturb the effect suppressing also to improve thereupon.
Two frequency pilot signs in subframe are not all interfered, and the OFDM data symbol of the N in this subframe is when be interfered, and by this N OFDM data symbol, calculates interference matrix, use two frequency pilot signs to calculate channel estimation values, and wherein, N is positive integer.When frequency pilot sign is not received interference, the interference matrix that uses pilot signal to obtain is inaccurate, and in the present embodiment, the data symbol being interfered by use (OFDM data symbol) calculates interference matrix, has improved the accuracy of interference noise.It should be noted that, the mode that usage data symbol calculates the mode of interference matrix and adopts frequency pilot sign to calculate interference matrix is identical, therefore, does not repeat them here.
Step 606, according to interference matrix, disturbs inhibition to subframe.
In specific implementation process, can use following formula to disturb inhibition to the OFDM symbol being disturbed in subframe:
x＝(H
HSH+C)
-1H
HSy；
Wherein, x is equilibrium result, and y is aerial signal, and H is channel estimation results, interference matrix
for N
r* N
rinterference matrix covariance matrix;
for N
t* N
tthe covariance matrix that transmits, N
rfor reception antenna number, N
tfor number of transmit antennas.
In the present embodiment, first determine the position being disturbed in subframe, and calculate interference matrix S according to the position being disturbed, then, use S to disturb inhibition to subframe.Interference matrix S is calculated in the position being disturbed by use, realizes and accurately estimates S, and S can improve the accuracy of disturbing inhibition accurately, and therefore, the present embodiment can play and improve the effect of disturbing the accuracy suppressing.
Embodiment bis-
The embodiment of the present invention also provides the disturbance restraining method in a kind of LTE system, in the present embodiment, equipment in LTE system, for example, the time-domain position at place can Intelligent Measurement be disturbed in LTE base station, judge current interference stack situation, for example, current interference belongs in above-mentioned 3 any in stack situation; After judging interference stack situation, different stack situations is taked to different anti-interference methods.
Because all symbols in LTE system uplink subframe all adopt unified power emission, so the power between distinct symbols can not differ too large in the 1ms time; If differ larger, it must be the stack that has been subject to certain interference signal; The time-domain position that therefore, can disturb by this characteristic judgement.In the process of the time domain superposed positions of disturbing at automatic decision, in the granularity of judgement, can adopt OFDM symbol level, also can adopt other granularity, take OFDM symbol below as granularity describes, judge that the method that is disturbed position can comprise:
The LTE radio-frequency front-end signal of eating dishes without rice or wine is down-converted to base band, and carries out analog to digital converter (Analog-Digital Converter, ADC) sampling;
The baseband signal that ADC is sampled one by one OFDM symbol is asked for symbol gross power P (0), P (1) ... P (13);
Find the symbol of power minimum, Pmin;
By the power of all symbols with minimum symbol power comparison, if gap is greater than α db, think that this symbol is subject to system and disturbs outward, now can will disturb sign to be set to 1,, Interfere_flag (symbol_index)=1, otherwise, think that this symbol is not subject to system and disturbs outward, now can will disturb sign to be set to 0, that is, Interfere_flag (symbol_index)=0.
After determining the time-domain position disturbing, can take different strategies to suppress disturbing according to court verdict.For example, if in a subframe, there is a frequency pilot sign to be subject to disturbing and another symbol is not interfered, use the frequency pilot sign of the interference not being subject to calculate channel estimation value H, the H now obtaining is more accurate, the frequency pilot sign that use is interfered calculates interference matrix S, and the S now obtaining is more accurate; If two frequency pilot signs of a subframe have all been subject to interference, with treating that two frequency pilot signs of balanced symbol place time slot calculate H and S; If two frequency pilot signs of a subframe are not all interfered, by frequency pilot sign, cannot calculate S, now, can adopt the symbol data (that is, data symbol or OFDM data symbol) being interfered to calculate S, on the frequency domain resource position at these symbol places, interference signal intensity is much larger than signal strength signal intensity, so directly use frequency domain symbol data, also can obtain the covariance matrix of interference, obtain S.
Above-described method judges interference position according to difference power, but the application is not limited to this, also can adopt other determination methods to judge interference position, as long as can judge interference position.
The flow process of the disturbance restraining method of the present embodiment can be expressed as by false code:
In the present embodiment, first determine the position being disturbed in subframe, and calculate interference matrix S according to the position being disturbed, then, use S to disturb inhibition to subframe.Interference matrix S is calculated in the position being disturbed by use, realizes and accurately estimates S, and S can improve the accuracy of disturbing inhibition accurately, and therefore, the present embodiment can play and improve the effect of disturbing the accuracy suppressing.By the present embodiment, when having good inhibition in the face of intrasystem co-channel interference, to the interference between system, also can there is good inhibition.
Embodiment tri-
As shown in Figure 7, show the interference suppression equipment in a kind of LTE system, this device can be the base station in LTE system, and this device can be for realizing the method in said method embodiment, therefore, the feature in said method embodiment can be incorporated in the present embodiment.As shown in Figure 7, this device comprises:
Determining unit 72, for the position of determining that subframe is disturbed;
Computing unit 74, for calculating interference matrix with the position being disturbed;
Disturb and suppress unit 76, for according to interference matrix, subframe is disturbed to inhibition.
In a preferred embodiment of the embodiment of the present invention, the OFDM symbol of determining unit 72 for determining that subframe is disturbed; Computing unit 74 is for being used the OFDM sign computation interference matrix being disturbed.
In a preferred embodiment of the embodiment of the present invention, determining unit 72 is all interfered for determining two frequency pilot signs of subframe; Computing unit 74 is for being used two frequency pilot signs of subframe to calculate interference matrix and channel estimation value.
In a preferred embodiment of the embodiment of the present invention, determining unit 72 is interfered for determining the first frequency pilot sign of subframe, and the second frequency pilot sign in subframe is not interfered; Computing unit 74, for using the first frequency pilot sign to calculate interference matrix, is used the second frequency pilot sign to calculate channel estimation value.
In a preferred embodiment of the embodiment of the present invention, determining unit 72 is not all interfered for determining two frequency pilot signs of subframe, determines that N OFDM data symbol in subframe is interfered, and wherein, N is positive integer; Computing unit 74, for using N OFDM data sign computation interference matrix, is used two frequency pilot signs to calculate channel estimation value.
In a preferred embodiment of the embodiment of the present invention, disturb and suppress unit 76 for using following formula to disturb inhibition to the OFDM symbol being disturbed of subframe:
x＝(H
HSH+C)
-1H
HSy；
Wherein, x is equilibrium result, and y is aerial signal, and H is channel estimation results, interference matrix
for N
r* N
rinterference matrix covariance matrix;
for N
t* N
tthe covariance matrix that transmits, N
rfor reception antenna number, N
tfor number of transmit antennas.
In a preferred embodiment of the embodiment of the present invention, determining unit 72 is for the power that detects each OFDM symbol of subframe; Whether the difference that judges the power of the OFDM symbol in subframe and the power of the 2nd OFDM symbol in subframe is greater than first threshold, and wherein, an OFDM symbol is the OFDM symbol of power minimum in subframe; If so, determine that the 2nd OFDM symbol is the OFDM symbol being disturbed.
In a preferred embodiment of the embodiment of the present invention, determining unit 72 is for the power that detects each OFDM symbol of subframe; Determine the mean value of the power of OFDM symbol in subframe; Judge whether the 3rd power of OFDM symbol and the difference of mean value in subframe are greater than first threshold; If so, determine that the 3rd OFDM symbol is the OFDM symbol being disturbed.
In the present embodiment, first determine the position being disturbed in subframe, and calculate interference matrix S according to the position being disturbed, then, use S to disturb inhibition to subframe.Interference matrix S is calculated in the position being disturbed by use, realizes and accurately estimates S, and S can improve the accuracy of disturbing inhibition accurately, and therefore, the present embodiment can play and improve the effect of disturbing the accuracy suppressing.By the present embodiment, when having good inhibition in the face of intrasystem co-channel interference, to the interference between system, also can there is good inhibition.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.For system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
Disturbance restraining method and device in a kind of LTE system above the application being provided, be described in detail, applied specific case herein the application's principle and execution mode are set forth, the explanation of above embodiment is just for helping to understand the application's method and core concept thereof; Meanwhile, for one of ordinary skill in the art, the thought according to the application, all will change in specific embodiments and applications, and in sum, this description should not be construed as the restriction to the application.
Claims (10)
1. the disturbance restraining method in Long Term Evolution LTE system, is characterized in that, comprising:
Determine the position being disturbed in subframe;
With the described position being disturbed, calculate interference matrix;
According to described interference matrix, described subframe is disturbed to inhibition.
2. the method for claim 1, is characterized in that,
Determine that the position being disturbed in subframe comprises: determine the orthogonal frequency division multiplex OFDM symbol being disturbed in described subframe;
With the described position being disturbed, calculating interference matrix comprises: the OFDM sign computation interference matrix being disturbed described in use.
3. method as claimed in claim 2, is characterized in that,
Determine the OFDM symbol being disturbed in described subframe, comprising: determine that two frequency pilot signs in described subframe are all interfered;
The OFDM sign computation interference matrix being disturbed described in use, comprising: use two frequency pilot signs in described subframe to calculate described interference matrix and channel estimation value.
4. method as claimed in claim 2, is characterized in that,
Determine the OFDM symbol being disturbed in described subframe, comprising: determine that the first frequency pilot sign in described subframe is interfered, the second frequency pilot sign in described subframe is not interfered;
The OFDM sign computation interference matrix being disturbed described in use, comprising: use described the first frequency pilot sign to calculate described interference matrix, use described the second frequency pilot sign to calculate channel estimation value.
5. method as claimed in claim 2, is characterized in that,
Determine the OFDM symbol being disturbed in described subframe, comprising: determine that two frequency pilot signs in described subframe are not all interfered, determine that N OFDM data symbol in described subframe is interfered, wherein, N is positive integer;
The OFDM sign computation interference matrix being disturbed described in use, comprising: use interference matrix described in described N OFDM data sign computation, use described two frequency pilot signs to calculate channel estimation value.
6. the method as described in claim 3 to 5 any one, is characterized in that, according to described interference matrix, described subframe is disturbed to inhibition, comprising:
Use following formula to disturb inhibition to the OFDM symbol being disturbed in described subframe:
x＝(H
HSH+C)
-1H
HSy；
Wherein, x is equilibrium result, and y is aerial signal, and H is described channel estimation results, described interference matrix
for N
r* N
rinterference matrix covariance matrix;
for N
t* N
tthe covariance matrix that transmits, N
rfor reception antenna number, N
tfor number of transmit antennas.
7. the method as described in claim 2 to 5 any one, is characterized in that, determines that the OFDM symbol being disturbed in described subframe comprises:
Detect the power of each OFDM symbol in described subframe;
Whether the difference that judges the power of the OFDM symbol in described subframe and the power of the 2nd OFDM symbol in described subframe is greater than first threshold, and wherein, a described OFDM symbol is the OFDM symbol of power minimum in described subframe;
If so, determine that described the 2nd OFDM symbol is the OFDM symbol being disturbed.
8. the method as described in claim 2 to 5 any one, is characterized in that, determines that the OFDM symbol being disturbed in described subframe comprises:
Detect the power of each OFDM symbol in described subframe;
Determine the mean value of the power of OFDM symbol in described subframe;
Judge whether the power of the 3rd OFDM symbol in described subframe and the difference of described mean value are greater than first threshold;
If so, determine that described the 3rd OFDM symbol is the OFDM symbol being disturbed.
9. the interference suppression equipment in Long Term Evolution LTE system, is characterized in that, comprising:
Determining unit, for the position of determining that subframe is disturbed;
Computing unit, calculates interference matrix for the position being disturbed described in use;
Disturb and suppress unit, for according to described interference matrix, described subframe is disturbed to inhibition.
10. device as claimed in claim 9, is characterized in that,
The orthogonal frequency division multiplex OFDM symbol of described determining unit for determining that described subframe is disturbed; The OFDM sign computation interference matrix of described computing unit for being disturbed described in using.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752937.XA CN103701736B (en) | 2013-12-31 | 2013-12-31 | Disturbance restraining method and device in LTE system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752937.XA CN103701736B (en) | 2013-12-31 | 2013-12-31 | Disturbance restraining method and device in LTE system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103701736A true CN103701736A (en) | 2014-04-02 |
| CN103701736B CN103701736B (en) | 2017-08-25 |
Family
ID=50363137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310752937.XA Active CN103701736B (en) | 2013-12-31 | 2013-12-31 | Disturbance restraining method and device in LTE system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103701736B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916229A (en) * | 2014-04-29 | 2014-07-09 | 电信科学技术研究院 | Interference suppression method and device |
| CN107294636A (en) * | 2016-03-30 | 2017-10-24 | 中兴通讯股份有限公司 | A kind of detection method and device for eliminating co-channel interference |
| CN108833315A (en) * | 2018-09-27 | 2018-11-16 | 北京四季豆信息技术有限公司 | A kind of method and device of channel estimation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577692A (en) * | 2009-06-15 | 2009-11-11 | 北京邮电大学 | Channel estimating method of orthogonal frequency division multiplexing system and device thereof |
| US20120243502A1 (en) * | 2009-12-09 | 2012-09-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and Arrangement for Improved Interference Rejection Combining |
| CN103155442A (en) * | 2011-04-25 | 2013-06-12 | 株式会社Ntt都科摩 | Mobile communication terminal |
| CN103379078A (en) * | 2012-04-27 | 2013-10-30 | 电信科学技术研究院 | Method and device for frequency domain balancing detection |
| US20130315174A1 (en) * | 2006-05-12 | 2013-11-28 | At&T Intellectual Property I, L.P. | Adaptive rate and reach optimization for wireless access networks |
-
2013
- 2013-12-31 CN CN201310752937.XA patent/CN103701736B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130315174A1 (en) * | 2006-05-12 | 2013-11-28 | At&T Intellectual Property I, L.P. | Adaptive rate and reach optimization for wireless access networks |
| CN101577692A (en) * | 2009-06-15 | 2009-11-11 | 北京邮电大学 | Channel estimating method of orthogonal frequency division multiplexing system and device thereof |
| US20120243502A1 (en) * | 2009-12-09 | 2012-09-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and Arrangement for Improved Interference Rejection Combining |
| CN103155442A (en) * | 2011-04-25 | 2013-06-12 | 株式会社Ntt都科摩 | Mobile communication terminal |
| CN103379078A (en) * | 2012-04-27 | 2013-10-30 | 电信科学技术研究院 | Method and device for frequency domain balancing detection |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916229A (en) * | 2014-04-29 | 2014-07-09 | 电信科学技术研究院 | Interference suppression method and device |
| WO2015165403A1 (en) * | 2014-04-29 | 2015-11-05 | 电信科学技术研究院 | Interference suppression method and device |
| CN103916229B (en) * | 2014-04-29 | 2017-12-08 | 电信科学技术研究院 | A kind of disturbance restraining method and device |
| CN107294636A (en) * | 2016-03-30 | 2017-10-24 | 中兴通讯股份有限公司 | A kind of detection method and device for eliminating co-channel interference |
| CN108833315A (en) * | 2018-09-27 | 2018-11-16 | 北京四季豆信息技术有限公司 | A kind of method and device of channel estimation |
| CN108833315B (en) * | 2018-09-27 | 2021-09-10 | 北京四季豆信息技术有限公司 | Channel estimation method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103701736B (en) | 2017-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101849397B (en) | Channel estimation for synchronized cells in a cellular communication system | |
| CN103155502B (en) | Interference signal parameters method of estimation and device | |
| US10219238B2 (en) | OTDOA in LTE networks | |
| CN106549897B (en) | Use the interference elimination method of nonlinear filtering, device and computer-readable program medium | |
| US20140086371A1 (en) | Interference cancellation apparatus and receiver | |
| EP2597793A1 (en) | Method for estimating interference within a serving cell, user equipment, computer program and computer program products | |
| US8934365B2 (en) | User equipment and method for radio link monitoring | |
| US9294951B2 (en) | Method for joint cell measurement and system information identification | |
| CN102480314A (en) | Self-adaptive method and device for eliminating interference of multiple antennae through diversity and mergence | |
| CN107171981B (en) | Channel correction method and device | |
| CN103701736A (en) | Interference inhibiting method and device in LTE (long term evolution) system | |
| US10015696B2 (en) | Robust PBCH-IC method in LTE advanced | |
| US20140369340A1 (en) | Method and devices for radio link monitoring | |
| US20180198645A1 (en) | Method and device for suppressing interference signal | |
| US9363695B2 (en) | Reception device and reception method | |
| CN103905072B (en) | Wireless communication receiver and interference elimination method thereof and device, signal demodulating method | |
| Hekkala et al. | Cooperative spectrum sensing study using welch periodogram | |
| EP2545689A1 (en) | Method and apparatus for estimating a doppler frequency | |
| CN104753831A (en) | Method and device for detecting quantity of adjacent region antenna ports | |
| US9686804B2 (en) | Method and network node for assisting handling of interference at a receiver device | |
| US8976840B2 (en) | Radio receiver for detecting an additive white Gaussian noise channel | |
| CN103813374A (en) | Reference signal received power measurement method, device and terminal | |
| CN114760177B (en) | Data receiving method in multipoint-to-point system and related equipment | |
| EP3062447B1 (en) | Method and device for canceling a bias of a radio channel sequence | |
| Sasaki et al. | High-Precision 5G-NR Downlink Signal Detection Sensor Developed Using Software-Defined Radio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |