CN103701735A - Multiple cell-based same-frequency joint detection method and device - Google Patents
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Abstract
The invention provides a multiple cell-based same-frequency joint detection method, which comprises the following steps of acquiring an original channel estimation result of a current cell, and determining an original interference value of the current cell according to the original channel estimation result of the current cell; determining a channel estimation result after the current cell interference is eliminated, and determining an interference value after the current cell interference is eliminated according to the channel estimation result after the current cell interference is eliminated; determining a joint detection channel estimation result according to the original interference value and the interference value after the interference is eliminated, and performing joint detection according to the determined joint detection channel estimation result. The channel estimation adopted during joint detection is selected according to the interference values before and after the interference is eliminated so as to judge whether the channel estimation result after the interference is eliminated is reliable or not, and performance deterioration caused by same-frequency detection brought by no service, a little traffic or adjacent cell signals of a few adjacent cells can be eliminated.
Description
Technical field
The present invention relates to communication technical field, a kind of same frequency joint inspection method and device based on a plurality of communities is especially provided.
Background technology
With the multi-cell channel of algorithm employing frequently, estimate to disturb to eliminate and can remove well the interference that co-frequency neighbor cell signal is estimated this cell channel, resist co-frequency neighbor cell user's interference, improve systematic function.But in reality realizes, because adopted the method with frequency joint-detection, this algorithm relies on base station side and carries out channel estimating and joint-detection according to the adjacent area ID including in.When really there is business homogeneous-frequency adjacent-domain, channel estimating is disturbed elimination and had performance boost with associating frequently, but when adjacent area does not have business, this community is still carried out reception signal adjacent area interference and eliminated and include in joint inspection, can make so on the contrary demodulation performance worsen, specifically the reasons are as follows:
A, homogeneous-frequency adjacent-domain probability upgrade needs a process, when the stronger power of initial interference is not when adjacent cell is also included joint inspection in, easily within a period of time, the adjacent area of not carrying out business miss and is disturbed elimination as interfered cell, and demodulation performance can worsen on the contrary.
B, when adjacent area, outfield number is less and these adjacent area traffic carrying capacitys situation seldom under, above easily will not have the adjacent area of business miss and disturb elimination as interfered cell with joint inspection technology frequently yet, and include this neighboring area signal in joint inspection, demodulation performance can worsen on the contrary.
Summary of the invention
(1) technical problem that will solve
The object of the invention is, a kind of same frequency joint inspection method based on a plurality of communities is provided, thus eliminate without business or the performance that detects of the same frequency bringing in neighboring area signal when traffic carrying capacity is less or adjacent area number is less worsen.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of same frequency joint inspection method based on a plurality of communities, comprising:
Obtain the original estimation result of current area, according to the original estimation result of described current area, determine the original interference value of described current area;
Determine the channel estimation results after the interference of described current area is eliminated, and disturb the channel estimation results after eliminating to determine the interference value after the interference elimination of described current area according to described current area;
According to the interference value after described original interference value and interference elimination, determine joint inspection channel estimation results, and carry out joint-detection according to definite joint inspection channel estimation results.
Optionally, describedly determine that described current area disturbs the channel estimation results after eliminating to comprise:
According to the original estimation result of all communities in described a plurality of communities, elimination is disturbed in all communities, obtain the channel estimation results after described all area interference are eliminated, and the channel estimation results from described all area interference are eliminated obtains the channel estimation results after the interference of described current area is eliminated.
Optionally, described interference value according to described original interference value and after disturb eliminating determines that joint inspection channel estimation results comprises:
Judge whether described original interference value is greater than the interference value disturbing after eliminating;
If so, disturb the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area;
If not, the original estimation result of described current area is set as to joint inspection information estimator result.
Optionally, described interference value according to described original interference value and after disturb eliminating determines that joint inspection channel estimation results and the definite joint inspection channel estimation results of described basis carry out also comprising between joint-detection: according to described original interference value with disturb the interference value after eliminating to determine whether adjacent area user to disturb code channel to include joint-detection in.
Optionally, described interference value according to described original interference value and after disturb eliminating is determined joint inspection channel estimation results, and according to definite joint inspection channel estimation results, carries out joint-detection and comprise: judge whether described original interference value is greater than the interference value disturbing after eliminating;
If so, disturb the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area, disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results;
If not, the original estimation result of described current area is set as to joint inspection information estimator result, does not disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results.
For solving the problems of the technologies described above, the present invention also provides a kind of same frequency co-detection device based on a plurality of communities, comprising:
Original interference value determining unit, for obtaining the original estimation result of current area, determines the original interference value of described current area according to the original estimation result of described current area;
Disturb and eliminate rear interference value determining unit, for definite described current area, disturb the channel estimation results after eliminating, and disturb the channel estimation results after elimination to determine the interference value after the interference of described current area is eliminated according to described current area;
Joint inspection channel estimation results determining unit, for determining joint inspection channel estimation results according to the interference value after described original interference value and interference elimination, and carries out joint-detection according to definite joint inspection channel estimation results.
Optionally, the rear interference value determining unit of described interference elimination comprises:
Disturb and eliminate subelement, for elimination being disturbed in all communities according to the original estimation result of all communities, described a plurality of community, obtain the channel estimation results after described all area interference are eliminated;
Channel estimation results obtains subelement, obtains described current area disturb the channel estimation results after eliminating for the channel estimation results from described all area interference are eliminated.
Optionally, described joint inspection channel estimation results determining unit comprises:
Judgment sub-unit, for judging whether described original interference value is greater than the interference value disturbing after eliminating;
First judges subelement, in the situation that described original interference value is greater than the interference value disturbing after eliminating, disturbs the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area;
Second judges subelement, in the situation that described original interference value is not more than the interference value disturbing after eliminating, the original estimation result of described current area is set as to joint inspection information estimator result.
Optionally, described joint inspection channel estimation results determining unit also comprises definite subelement: for according to described original interference value with disturb the interference value after eliminating to determine whether to include in adjacent area window.
Concrete, described first judges subelement, be used in the situation that described original interference value is greater than the interference value disturbing after eliminating, disturb the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area, control described definite subelement and disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results;
Described second judges subelement, be used in the situation that described original interference value is not more than the interference value disturbing after eliminating, the original estimation result of described current area is set as to joint inspection information estimator result, control described definite subelement and do not disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results.
(3) beneficial effect
Be different from background technology, the invention provides a kind of same frequency joint inspection method based on a plurality of communities, before carrying out joint-detection, can and disturb the channel estimation results after eliminating to investigate to original estimation result, use respectively original estimation result to determine original interference value and use the channel estimation results disturbing after eliminating to determine the interference value disturbing after eliminating, the channel estimating of employing while selecting to carry out joint inspection according to the interference value that disturbs elimination front and back, thereby whether judgement disturbs the channel estimation results after eliminating reliable, can eliminate without business or the performance that detects of the same frequency bringing in neighboring area signal when traffic carrying capacity is less or adjacent area number is less worsen.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the same frequency joint inspection method of embodiment mono-based on a plurality of communities;
Fig. 2 is the idiographic flow schematic diagram of the same frequency joint inspection method of embodiment mono-based on a plurality of communities;
Fig. 3 is the schematic flow sheet of the same frequency joint inspection method of embodiment bis-based on a plurality of communities;
Fig. 4 is the module map of the same frequency co-detection device of embodiment tri-based on a plurality of communities;
Fig. 5 is the concrete module map of the same frequency co-detection device of embodiment tri-based on a plurality of communities.
Embodiment
For making object of the present invention, content and advantage clearer, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
Embodiment mono-
Refer to Fig. 1 and Fig. 2, the present embodiment provides a kind of same frequency joint inspection method based on a plurality of communities, the method originates in step 101, obtains the original estimation result of current area, determines the original interference value of described current area according to the original estimation result of described current area.
In step 102, determine the channel estimation results after the interference of described current area is eliminated, and disturb the channel estimation results after eliminating to determine the interference value after the interference elimination of described current area according to described current area.
In step 103, according to the interference value after described original interference value and interference elimination, determine joint inspection channel estimation results, and carry out joint-detection according to definite joint inspection channel estimation results.
Pass through said process, known the present embodiment is before carrying out joint-detection, can and disturb the channel estimation results after eliminating to investigate to original estimation result, use respectively original estimation result to determine original interference value and use the channel estimation results disturbing after eliminating to determine the interference value disturbing after eliminating, the channel estimating of employing while selecting to carry out joint inspection according to the interference value that disturbs elimination front and back, thereby whether judgement disturbs the channel estimation results after eliminating reliable, can eliminate without business or the performance that detects of the same frequency bringing in neighboring area signal when traffic carrying capacity is less or adjacent area number is less worsen.
Refer to Fig. 2, in the present embodiment, step 102 comprises step 1021 and step 1022, wherein in step 102, definite described current area disturbs the channel estimation results after eliminating to realize by step 1021: in step 1021, according to the original estimation result of all communities in described a plurality of communities, elimination is disturbed in all communities, obtain the channel estimation results after described all area interference are eliminated.
In step 1022, the channel estimation results from described all area interference are eliminated obtains described current area and disturbs the channel estimation results after eliminating.
Optionally, in the present embodiment, described in step 103, according to the interference value after described original interference value and interference elimination, determine that joint inspection channel estimation results and the definite joint inspection channel estimation results of described basis carry out also comprising between joint-detection: according to the interference value after described original interference value and interference elimination, determine whether adjacent area user to disturb code channel to include joint-detection in.Concrete, step 103 comprises step 1031-step 1034.
In step 1031, judge whether described original interference value is greater than the interference value disturbing after eliminating;
In step 1032, judge that original interference value is greater than the interference value disturbing after eliminating, disturb the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area, disturb code channel to include joint-detection in adjacent area user, and perform step 1034.
In step 1032, judge that original interference value is not more than the interference value disturbing after eliminating, the original estimation result of described current area is set as to joint inspection information estimator result, do not disturb code channel to include joint-detection in adjacent area user, and perform step 1034.
In step 1034, according to definite joint inspection channel estimation results, carry out joint-detection.
Process is to explanation embodiment illustrated in fig. 2, we are known, the present embodiment is before carrying out joint-detection, can and disturb the channel estimation results after eliminating to investigate to original estimation result, use respectively original estimation result to determine original interference value and use the channel estimation results disturbing after eliminating to determine the interference value disturbing after eliminating, the channel estimating of employing while selecting to carry out joint inspection according to the interference value that disturbs elimination front and back, thereby whether judgement disturbs the channel estimation results after eliminating reliable, can eliminate without business or the performance that detects of the same frequency bringing in neighboring area signal when traffic carrying capacity is less or adjacent area number is less worsen.Further, also when the interference value after disturbing elimination is not so good as to disturb the interference value (being original interference value) before eliminating, do not disturb code channel to include joint-detection in adjacent area user, directly adopt original estimation result to carry out the method for joint-detection, avoid adopting the channel estimation results after incredible interference is eliminated to carry out again joint-detection, cause performance to worsen.
When simultaneously noiseless in adjacent area, can effectively reduce the consumption of the operand bringing with joint inspection frequently, and can avoid in live network artificial configuration with code word mistake frequently in the situation that, performance deleterious effects is down to minimum.
Embodiment bis-
Refer to Fig. 3, the same frequency joint inspection method of the present embodiment based on a plurality of communities provides a kind of concrete application example, and the method originates in step 301, and OM configures N adjacent cell ID.Wherein OM is the abbreviation of Operation and Maintainer, and its Chinese implication is attended operation terminal, in practical operation, is equivalent to webmaster or telecommunication management personnel.
After configuring, communication equipment is sent antenna data into channel estimation module, according to the co-frequency neighbor cell ID that the last time is included in, obtains the original estimation result of each community
the original estimation result that wherein comprises this community
original estimation result with adjacent cell
k
afor antenna number k
a=0 ..., K
a-1.In the present embodiment, this community is equivalent to current area, and adjacent cell is equivalent to adjacent area.
In step 302, according to the original estimation result of this community
the interference value ISCP that calculates this community, obtains ISCP_BEFORE.Concrete, the technical program is calculated original interference value by following steps: to each tap power of original channel response judgement of sorting, the tap of weak power is used as to disturbance response, then according to these disturbance responses, calculate interference power and just can obtain ISCP, common algorithm is free window method etc.
In step 303, by resulting original estimation result, disturb elimination, obtain the channel estimation results after all area interference are eliminated
channel estimation results after eliminating according to this area interference
calculate this area interference and eliminate interference value ISCP afterwards, obtain ISCP_AFTER.Disturb the calculating of interference value after eliminating the same with the computational methods of original interference value, do not repeat them here.
In step 304, upgrade the probability of homogeneous-frequency adjacent-domain, obtain up-to-date homogeneous-frequency adjacent-domain information.
In step 305, compare ISCP_BEFORE and ISCP_AFTER.
In step 3051, ISCP_BEFORE>ISCP_AFTER, adopt the channel estimation results disturbing after eliminating, and according to disturbing the channel estimation results after eliminating to carry out adjacent area window selection, disturb code channel to include joint-detection in adjacent area user, and then according to disturbing the channel estimation results after eliminating to carry out joint-detection.
In step 3052, ISCP_BEFORE<ISCP_AFTER, what adopt is that original estimation result is carried out joint-detection, does not disturb code channel to include joint-detection in adjacent area user.
The present embodiment is before carrying out joint-detection, can and disturb the channel estimation results after eliminating to investigate to original estimation result, use respectively original estimation result to determine original interference value ISCP_BEFORE and use the channel estimation results disturbing after eliminating to determine the interference value ISCP_AFTER disturbing after eliminating, the channel estimating of employing while selecting to carry out joint inspection according to the interference value that disturbs elimination front and back, thereby whether judgement disturbs the channel estimation results after eliminating reliable, can eliminate without business or the performance that detects of the same frequency bringing in neighboring area signal when traffic carrying capacity is less or adjacent area number is less worsen.
Embodiment tri-
The present embodiment provides a kind of same frequency co-detection device based on a plurality of communities, comprising: rear interference value determining unit 402 and joint inspection channel estimation results determining unit 403 are eliminated in original interference value determining unit 401, interference.The function of each unit is specific as follows.
Original interference value determining unit 401, for obtaining the original estimation result of current area, determines the original interference value of described current area according to the original estimation result of described current area.
Disturb and eliminate rear interference value determining unit 402, for definite described current area, disturb the channel estimation results after eliminating, and disturb the channel estimation results after elimination to determine the interference value after the interference of described current area is eliminated according to described current area.Concrete, described interference is eliminated rear interference value determining unit 402 and is comprised: disturb elimination subelement 4021 and channel estimation results to obtain subelement 4022.
Disturb and eliminate subelement 4021, for elimination being disturbed in all communities according to the original estimation result of all communities, described a plurality of community, obtain the channel estimation results after described all area interference are eliminated.
Channel estimation results obtains subelement 4022, obtains described current area disturb the channel estimation results after eliminating for the channel estimation results from described all area interference are eliminated.
Joint inspection channel estimation results determining unit 403, for determining joint inspection channel estimation results according to the interference value after described original interference value and interference elimination, and carries out joint-detection according to definite joint inspection channel estimation results.
Concrete, described joint inspection channel estimation results determining unit 403 comprises: judgment sub-unit 4031, first is judged subelement 4032, the second judgement subelement 4033 and definite subelement 4034.
Wherein, determine subelement 4034: for determining whether adjacent area user to disturb code channel to include joint-detection according to the interference value after described original interference value and interference elimination.
First judges subelement 4032, be used in the situation that described original interference value is greater than the interference value disturbing after eliminating, disturb the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area, control described definite subelement 4034 and disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results.
Second judges subelement 4033, be used in the situation that described original interference value is not more than the interference value disturbing after eliminating, the original estimation result of described current area is set as to joint inspection information estimator result, control described definite subelement 4034 and do not disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results.
The present embodiment is before carrying out joint-detection, can use respectively 401 pairs of original estimation result of original interference value determining unit, use and disturb the channel estimation results of eliminating after rear interference value determining unit 402 interference are eliminated to investigate, use respectively original estimation result to determine original interference value and use the channel estimation results disturbing after eliminating to determine the interference value disturbing after eliminating, the channel estimating of employing while utilizing joint inspection channel estimation results determining unit 403 to select to carry out joint inspection according to the interference value that disturbs elimination front and back, thereby whether judgement disturbs the channel estimation results after eliminating reliable, can eliminate without business or the performance that detects of the same frequency bringing in neighboring area signal when traffic carrying capacity is less or adjacent area number is less worsen.
Further, the present embodiment is also when the interference value after disturbing elimination is not so good as to disturb the interference value (being original interference value) before eliminating, do not include adjacent area window in, directly adopt original estimation result to carry out the method for joint-detection, avoid adopting the channel estimation results after incredible interference is eliminated to carry out again joint-detection, cause performance to worsen.
When simultaneously noiseless in adjacent area, can effectively reduce the consumption of the operand bringing with joint inspection frequently, and can avoid in live network artificial configuration with code word mistake frequently in the situation that, performance deleterious effects is down to minimum.
In sum, the present invention has following advantage:
(1) the present invention proposes a kind of adaptive same frequency joint inspection method based on a plurality of communities, the interference value that the method utilization calculates before and after disturbing and eliminating, whether judgement disturbs the channel estimating after eliminating reliable, for can eliminate the performance of the same frequency detection bringing in without neighboring area signal, worsens.
(2) interference value ISCP after disturb eliminating has been proposed when disturbing the interference value ISCP before eliminating, do not include adjacent area in, directly adopt original channel to estimate to carry out the method for joint-detection, avoid adopting the channel estimating after incredible interference is eliminated to carry out again joint-detection, cause performance to worsen.
(3) propose interference value ISCP after disturb eliminating when better than the interference value ISCP before eliminating, included the method that adjacent area window carries out joint inspection in.
(4) can eliminate the performance deterioration of the same frequency detection bringing in without neighboring area signal.
(5), when noiseless in adjacent area, can effectively reduce the consumption of the operand bringing with joint inspection frequently.
(6), the in the situation that of can avoiding artificially configuring in live network with frequency code word mistake, performance deleterious effects is reduced.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the same frequency joint inspection method based on a plurality of communities, is characterized in that, comprising:
Obtain the original estimation result of current area, according to the original estimation result of described current area, determine the original interference value of described current area;
Determine the channel estimation results after the interference of described current area is eliminated, and disturb the channel estimation results after eliminating to determine the interference value after the interference elimination of described current area according to described current area;
According to the interference value after described original interference value and interference elimination, determine joint inspection channel estimation results, and carry out joint-detection according to definite joint inspection channel estimation results.
2. the same method of joint inspection frequently according to claim 1, is characterized in that, described definite described current area disturbs the channel estimation results after eliminating to comprise:
According to the original estimation result of all communities in described a plurality of communities, elimination is disturbed in all communities, obtain the channel estimation results after described all area interference are eliminated, and the channel estimation results from described all area interference are eliminated obtains the channel estimation results after the interference of described current area is eliminated.
3. according to claim 1ly with joint inspection method frequently, it is characterized in that, described according to described original interference value with disturb the interference value after eliminating to determine that joint inspection channel estimation results comprises:
Judge whether described original interference value is greater than the interference value disturbing after eliminating;
If so, disturb the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area;
If not, the original estimation result of described current area is set as to joint inspection information estimator result.
4. according to the same frequency joint inspection method described in claim 1-3 any one, it is characterized in that, described interference value according to described original interference value and after disturb eliminating determines that joint inspection channel estimation results and the definite joint inspection channel estimation results of described basis carry out also comprising between joint-detection: according to described original interference value with disturb the interference value after eliminating to determine whether adjacent area user to disturb code channel to include joint-detection in.
5. according to claim 4ly with joint inspection method frequently, it is characterized in that, described according to described original interference value with disturb the interference value after eliminating to determine joint inspection channel estimation results, and according to definite joint inspection channel estimation results, carry out joint-detection and comprise:
Judge whether described original interference value is greater than the interference value disturbing after eliminating;
If so, disturb the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area, disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results;
If not, the original estimation result of described current area is set as to joint inspection information estimator result, does not disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results.
6. the same frequency co-detection device based on a plurality of communities, is characterized in that, comprising:
Original interference value determining unit, for obtaining the original estimation result of current area, determines the original interference value of described current area according to the original estimation result of described current area;
Disturb and eliminate rear interference value determining unit, for definite described current area, disturb the channel estimation results after eliminating, and disturb the channel estimation results after elimination to determine the interference value after the interference of described current area is eliminated according to described current area;
Joint inspection channel estimation results determining unit, for determining joint inspection channel estimation results according to the interference value after described original interference value and interference elimination, and carries out joint-detection according to definite joint inspection channel estimation results.
7. same co-detection device frequently according to claim 6, is characterized in that, described interference is eliminated rear interference value determining unit and comprised:
Disturb and eliminate subelement, for elimination being disturbed in all communities according to the original estimation result of all communities, described a plurality of community, obtain the channel estimation results after described all area interference are eliminated;
Channel estimation results obtains subelement, obtains described current area disturb the channel estimation results after eliminating for the channel estimation results from described all area interference are eliminated.
8. same co-detection device frequently according to claim 6, is characterized in that, described joint inspection channel estimation results determining unit comprises:
Judgment sub-unit, for judging whether described original interference value is greater than the interference value disturbing after eliminating;
First judges subelement, in the situation that described original interference value is greater than the interference value disturbing after eliminating, disturbs the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area;
Second judges subelement, in the situation that described original interference value is not more than the interference value disturbing after eliminating, the original estimation result of described current area is set as to joint inspection information estimator result.
9. according to the same frequency co-detection device described in claim 6-8 any one, it is characterized in that, described joint inspection channel estimation results determining unit also comprises definite subelement: for determining whether adjacent area user to disturb code channel to include joint-detection according to the interference value after described original interference value and interference elimination.
10. according to claim 9 with frequency co-detection device, it is characterized in that:
Described first judges subelement, be used in the situation that described original interference value is greater than the interference value disturbing after eliminating, disturb the channel estimation results after eliminating to be set as joint inspection channel estimation results described current area, control described definite subelement and disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results;
Described second judges subelement, be used in the situation that described original interference value is not more than the interference value disturbing after eliminating, the original estimation result of described current area is set as to joint inspection information estimator result, control described definite subelement and do not disturb code channel to include joint-detection in adjacent area user, and carry out joint-detection according to definite joint inspection channel estimation results.
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| CN101056285B (en) * | 2006-04-14 | 2011-01-19 | 鼎桥通信技术有限公司 | Parallel interference elimination channel estimation method and device in the radio mobile communication system |
| CN101060505B (en) * | 2006-04-19 | 2011-06-01 | 鼎桥通信技术有限公司 | Joint channel estimation method and estimation device in a wireless mobile communication system |
| CN101075843B (en) * | 2006-05-18 | 2010-05-12 | 大唐移动通信设备有限公司 | Method and apparatus for selecting combined-inspection homogeneous frequency adjacent area |
| CN101098184B (en) * | 2006-06-26 | 2012-04-25 | 上海原动力通信科技有限公司 | Method and apparatus for eliminating interference between adjacent cells |
| CN1874189B (en) * | 2006-06-29 | 2011-12-21 | 上海宣普实业有限公司 | Method and device for concurrent eliminating same frequency interference in TDS-CDMA |
| CN1949684B (en) * | 2006-11-03 | 2012-01-11 | 上海宣普实业有限公司 | Method and apparatus for eliminating common-frequency cell signal interference based on parallel interference cancellation |
| CN101312359B (en) * | 2007-05-23 | 2012-02-29 | 鼎桥通信技术有限公司 | Apparatus and method for multi-cell combined channel estimation and multi-cell combined detection |
| CN101651900B (en) * | 2008-08-11 | 2012-04-18 | 中兴通讯股份有限公司 | Channel estimation method and device for eliminating interference within frequency domain |
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