CN1819568B - Merging and normalizing method and device with down channel estimation in assigned distributing mode by user - Google Patents
Merging and normalizing method and device with down channel estimation in assigned distributing mode by user Download PDFInfo
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- CN1819568B CN1819568B CN2006100242966A CN200610024296A CN1819568B CN 1819568 B CN1819568 B CN 1819568B CN 2006100242966 A CN2006100242966 A CN 2006100242966A CN 200610024296 A CN200610024296 A CN 200610024296A CN 1819568 B CN1819568 B CN 1819568B
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Abstract
The method includes the following steps. By using message of current user from physical coded composite transport channel, after detecting the message of enabled training sequence or detecting the message of power of enabled code track, the combination and normalization process are made for the channel estimated value of target user. The invention can effectively improve the ability of anti-interference and anti-noise.
Description
Technical field
The present invention relates to the merging and the method for normalizing of channel estimating in a kind of TD-SCDMA (TD SDMA) system, specifically, be under assigned distributing mode by user, channel estimating to be merged and normalized method and device a kind of relating in TD-SCDMA system.
Background technology
In the receiving system of TD-SCDMA system, the method of salary distribution of system's movement training sequence is determined by network layer, the movement training sequence method of salary distribution of whole system has three kinds: default distributing mode (DEFAULT MODE), public distributing mode (COMMON MODE) and assigned distributing mode by user (UESPECFIC MODE), as shown in Figure 1.
In the method for salary distribution of different transfer training series, the method of salary distribution of the length channel estimating resource that system is limited is different: when the method for salary distribution of system's movement training sequence is public distributing mode, only comprise an effective channel estimation window in the estimating window of whole system, this estimating window is each user's a common signal channel estimating window, for all users take jointly; When the method for salary distribution of system's movement training sequence is assigned distributing mode by user, the channel estimating of different user will specially be assigned to corresponding estimating window of user and the combination of the code channel method of salary distribution by system; When the method for salary distribution of system's movement training sequence is default distributing mode, system will be according to the code channel that the user distributed of agreement defined, information distribution according to the pairing movement training sequence of agreement is given each user, in the time of a plurality of shift sequence of activating as certain targeted customer, the power of each shift sequence is suitable with corresponding each code channel gross power.
In the detection algorithm of routine, these transfer training information that belong to same targeted customer are not merged, but each movement training sequence individual processing all, therefore working as system is under the assigned distributing mode by user, when a plurality of movement training sequence of CU, the characteristic that the antinoise in the time of can't bringing into play a plurality of movement training sequence through same channel etc. is disturbed.
Summary of the invention
The merging and method for normalizing and the device that the object of the present invention is to provide a kind of assigned distributing mode by user lower channel to estimate, by physical coded combination transfers information (CCTrCH) information that makes full use of this user, after the information that detects the active training sequence of distributing to this user, the channel estimation value that belongs to same targeted customer is merged the ability of opposing interference of effectively raising system and noise.
For achieving the above object, the invention provides merging and method for normalizing that a kind of assigned distributing mode by user lower channel is estimated, be used for TDS-CDMA system; Described system adopts assigned distributing mode by user that movement training sequence is distributed, and have in a plurality of movement training sequence that the targeted customer is assigned with more than the effective situation of one movement training sequence, the method includes the steps of: detect each movement training sequence of a plurality of physical coded combination transfers informations of this targeted customer and the activation situation of other user activated movement training sequence, obtain the number and the number N of movement training sequence of the activation of each physical coded combination transfers information correspondence of this targeted customer
OwnMADetermine the number N of the activated code channel that each movement training sequence is shared
iThe merging of the channel estimating of each physical coded combination transfers information of targeted customer and normalized.
The merging of the channel estimating of each physical coded combination transfers information of targeted customer and normalized are that each physical coded combination transfers information is carried out independent normalized:
Wherein, h
iThe value of k point of i movement training sequence during (k) the expression original channel is estimated;
K represents k point in i the channel estimation window;
N
iThe number of representing the sign indicating number of i the pairing activation of movement training sequence;
N
OwnMAThe number of representing the movement training sequence of the pairing activation of current physical coded combination transfers information.
The merging of the channel estimating of each physical coded combination transfers information of targeted customer and normalized are the normalizeds that each physical coded combination transfers information is integrated:
Wherein, h
iThe value of k point of i movement training sequence during (k) the expression original channel is estimated;
K represents k point in i the channel estimation window;
N
iThe number of representing the sign indicating number of i the pairing activation of movement training sequence;
N
OwnMAThe number of representing the movement training sequence of the pairing activation of current physical coded combination transfers information.
Merging and normalization device that a kind of assigned distributing mode by user lower channel is estimated are used for TDS-CDMA system; Described system adopts assigned distributing mode by user that movement training sequence is distributed, and have in a plurality of movement training sequence that the targeted customer is assigned with more than the effective situation of one movement training sequence, this device comprises: the activation situation module that detects targeted customer's movement training sequence, detect each movement training sequence of a plurality of physical coded combination transfers informations of this targeted customer and the activation situation of other user activated movement training sequence, obtain the number and the number N of movement training sequence of the activation of each physical coded combination transfers information correspondence of this targeted customer
OwnMAThe activation situation module of targeted customer's channel code is determined the number N of the activated code channel that each movement training sequence is shared
iThe merging of targeted customer's channel estimating and normalization module.
The merging and the method for normalizing of channel estimating in a kind of TDS-CDMA system provided by the invention, the information of CCTrCH by making full use of this user, after the information that detects the active training sequence of distributing to this user, the channel estimation value that belongs to same targeted customer is merged the ability of opposing interference of effectively raising system and noise.
Description of drawings
Fig. 1 is the schematic diagram of the allocation model of the movement training sequence in the TDS-CDMA system in the background technology;
Fig. 2 is that the present invention is at the merging of assigned distributing mode by user lower channel estimation and the flow chart of method for normalizing;
Fig. 3 is merging and the normalization device schematic diagram that the assigned distributing mode by user lower channel of Fig. 2 is estimated.
Embodiment
Below, introduce specific embodiments of the invention in detail, so that further understand content of the present invention by Fig. 2 Fig. 3.
The merging of channel estimating and method for normalizing in a kind of TDS-CDMA system, its system that is used in adopts assigned distributing mode by user (UESPECFIC MODE) that movement training sequence is distributed, and have in a plurality of movement training sequence that the targeted customer is assigned with more than the effective situation of one movement training sequence, as shown in Figure 2, it specifically comprises following steps:
Step 21, detect the activation situation of movement training sequence: detect each movement training sequence of a plurality of CCTrCH of this targeted customer and the activation situation of other user activated movement training sequence, obtain the number and the number N of movement training sequence of the activation of each CCTrCH correspondence of this targeted customer
OwnMA
The activation situation of step 22, detection channel code: the number N of determining the activated code channel that each movement training sequence is shared
i, i.e. the number N of the sign indicating number of definite pairing activation of each movement training sequence
i
The merging of the channel estimating of each CCTrCH of step 23, targeted customer and normalized.
In the described step 23, can carry out independent normalized to each CCTrCH:
Wherein, h
iThe value of k point of i movement training sequence during (k) the expression original channel is estimated; K represents k point in i the channel estimation window;
N
iThe number of representing the sign indicating number of i the pairing activation of movement training sequence; N
OwnMAThe number of the movement training sequence of the pairing activation of expression current C CTrCH.
In the described step 23, the also normalized that can integrate to each CCTrCH:
Wherein, h
iThe value of k point of i movement training sequence during (k) the expression original channel is estimated; K represents k point in i the channel estimation window;
N
iThe number of representing the sign indicating number of i the pairing activation of movement training sequence; N
OwnMAThe number of the movement training sequence of the pairing activation of expression current C CTrCH.
Fig. 3 is merging and the normalization device schematic diagram that the assigned distributing mode by user lower channel of Fig. 2 is estimated.As shown in the figure, this device comprises the activation situation module 31 of the detection targeted customer movement training sequence that links to each other successively, the activation situation module 32 of targeted customer's channel code, and the merging of targeted customer's channel estimating and normalization module 33.
Merging and the method for normalizing estimated at the assigned distributing mode by user lower channel in a kind of TDS-CDMA system provided by the invention, the information of the physical coded combination transfers information by making full use of this user, after the information that detects the active training sequence of distributing to this user, the channel estimation value that belongs to same targeted customer is merged the ability of opposing interference of effectively raising system and noise.
Claims (4)
1. a merging and the method for normalizing that the assigned distributing mode by user lower channel is estimated is used for TDS-CDMA system; It is characterized in that described system adopts assigned distributing mode by user that movement training sequence is distributed, and have more than the effective situation of one movement training sequence in a plurality of movement training sequence of being assigned with of targeted customer that the method includes the steps of:
Detect each movement training sequence of a plurality of physical coded combination transfers informations of this targeted customer and the activation situation of other user activated movement training sequence, obtain the number and the number N of movement training sequence of the activation of each physical coded combination transfers information correspondence of this targeted customer
OwnMA
Determine the number N of the activated code channel that each movement training sequence is shared
i
The merging of the channel estimating of each physical coded combination transfers information of targeted customer and normalized, it is that each physical coded combination transfers information is carried out independent normalized:
Wherein, h
iThe value of k point of i movement training sequence during (k) the expression original channel is estimated;
K represents k point in i the channel estimation window;
N
iThe number of representing the sign indicating number of i the pairing activation of movement training sequence;
N
OwnMAThe number of representing the movement training sequence of the pairing activation of current physical coded combination transfers information.
2. the assigned distributing mode by user lower channel is estimated in the TDS-CDMA system as claimed in claim 1 merging and method for normalizing, it is characterized in that, the merging of the channel estimating of each physical coded combination transfers information of targeted customer and normalized, except independent normalized, the normalized of integrating is arranged still:
Wherein, h
iThe value of k point of i movement training sequence during (k) the expression original channel is estimated;
K represents k point in i the channel estimation window;
N
iThe number of representing the sign indicating number of i the pairing activation of movement training sequence;
N
OwnMAThe number of representing the movement training sequence of the pairing activation of current physical coded combination transfers information.
3. a merging and the normalization device that the assigned distributing mode by user lower channel is estimated is used for TDS-CDMA system; It is characterized in that described system adopts assigned distributing mode by user that movement training sequence is distributed, and have more than the effective situation of one movement training sequence in a plurality of movement training sequence of being assigned with of targeted customer that this device comprises:
Detect the activation situation module of targeted customer's movement training sequence, detect each movement training sequence of a plurality of physical coded combination transfers informations of this targeted customer and the activation situation of other user activated movement training sequence, obtain the number and the number N of movement training sequence of the activation of each physical coded combination transfers information correspondence of this targeted customer
OwnMA
The activation situation module of targeted customer's channel code is determined the number N of the activated code channel that each movement training sequence is shared
i
The merging of targeted customer's channel estimating and normalization module, it is that each physical coded combination transfers information is carried out independent normalized:
Wherein, h
iThe value of k point of i movement training sequence during (k) the expression original channel is estimated;
K represents k point in i the channel estimation window;
N
iThe number of representing the sign indicating number of i the pairing activation of movement training sequence;
N
OwnMAThe number of representing the movement training sequence of the pairing activation of current physical coded combination transfers information.
4. the assigned distributing mode by user lower channel is estimated in the TDS-CDMA system as claimed in claim 3 merging and normalization device, it is characterized in that, the merging of targeted customer's channel estimating and normalization module are to each physical coded combination transfers information, except independent normalized, the normalized of integrating is arranged still:
Wherein, h
iThe value of k point of i movement training sequence during (k) the expression original channel is estimated;
K represents k point in i the channel estimation window;
N
iThe number of representing the sign indicating number of i the pairing activation of movement training sequence;
N
OwnMAThe number of representing the movement training sequence of the pairing activation of current physical coded combination transfers information.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1543108A (en) * | 2003-11-04 | 2004-11-03 | 中兴通讯股份有限公司 | Multi-path combining method for WCDMA communication system |
| CN1588824A (en) * | 2004-08-02 | 2005-03-02 | 北京天碁科技有限公司 | Method and device for channel evaluation using training sequence |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1543108A (en) * | 2003-11-04 | 2004-11-03 | 中兴通讯股份有限公司 | Multi-path combining method for WCDMA communication system |
| CN1588824A (en) * | 2004-08-02 | 2005-03-02 | 北京天碁科技有限公司 | Method and device for channel evaluation using training sequence |
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