CN1819569B - Merging and normalizing method and device with down channel estimation in default distributing mode - Google Patents

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

Merging and method for normalizing and device in the estimation of default distributing mode lower channel

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 the default distributing mode channel estimating to be merged and normalized method and device a kind of relating in the TD-SCDMA system.

Background technology

In the receiving system of TD-SCDMA system, the method of salary distribution of the movement training sequence of system 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 only to each movement training sequence individual processing all, the characteristic that the antinoise in the time of therefore can't bringing into play a plurality of movement training sequence through same channel etc. is disturbed.

Summary of the invention

The object of the present invention is to provide a kind of merging and method for normalizing and device of estimating at the default distributing mode lower channel, 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 a kind of merging and method for normalizing of estimating at the default distributing mode lower channel, be used for TDS-CDMA system, described system adopts default distributing mode that movement training sequence is distributed, and has more than the effective situation of one movement training sequence in a plurality of movement training sequence of being assigned with of targeted customer; 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 channel estimating of each physical coded combination transfers information of targeted customer and the normalized of merging; The normalized of the channel estimating of other excited users.

The channel estimating of each physical coded combination transfers information of targeted customer and the normalized of merging are that each physical coded combination transfers information is carried out independent normalized:

Wherein, h _iThe value of k point of r 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 i the pairing activated code channel 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 channel estimating of each physical coded combination transfers information of targeted customer and the normalized of merging are the normalizeds that each physical coded combination transfers information is integrated, and also can take following method to calculate:

Wherein, h _iThe value of k point of r 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 i the pairing activated code channel 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 method of the normalized of described channel estimating to other excited users is:

${\hat{h}}_r\left(k\right)=h_r\left(k\right)/\mathrm{sqrt}\left(N_r\right);$

Wherein, N _rExpression is corresponding to the number of the activated code channel of r movement training sequence;

h _r(k) value of k point of r movement training sequence of expression original channel estimation;

K represents k point in r the channel estimation window.

A kind of merging and normalization device of estimating at the default distributing mode lower channel, be used for TDS-CDMA system, described system adopts default distributing mode that movement training sequence is distributed, and has more than the effective situation of one movement training sequence in a plurality of movement training sequence of being assigned with of targeted customer; This device comprises: the activation situation detection module of 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 detection module of channel code is determined the number N of the activated code channel that each movement training sequence is shared _iThe normalization module of the merging of targeted customer's channel estimating; The normalization module of the channel estimating of other excited users.

A kind of merging and method for normalizing and device of estimating at the default distributing mode lower channel 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 default distributing mode lower channel estimation and the flow chart of method for normalizing;

Fig. 3 is merging and the normalization device schematic diagram that the default distributing mode lower channel of Fig. 2 is estimated;

Embodiment

Below by Fig. 2 and Fig. 3, introduce specific embodiments of the invention in detail, so that further understand content of the present invention.

The merging of channel estimating and method for normalizing in a kind of TDS-CDMA system, its system that is used in adopts default distributing mode (DEFAULT 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, promptly determine the number N of the pairing activated code channel of each movement training sequence _i

The channel estimating of each CCTrCH of step 23, targeted customer and the normalized of merging;

The normalized of the channel estimating of step 24, other excited users.

In the described step 23, can carry out independent normalized to each CCTrCH:

Wherein, h _iThe value of k point of r movement training sequence during (k) the expression original channel is estimated; K represents i the k in the channel estimation window ^ThIndividual point;

N _iThe number of representing i the pairing activated code channel 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 r 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 i the pairing activated code channel 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 24, the method for the normalized of concrete channel estimating to other excited users is:

Wherein, N _rExpression is corresponding to the number of the activated code channel of r movement training sequence; h _r(k) value of k point of r movement training sequence of expression original channel estimation; K represents k point in i the channel estimation window.

Fig. 3 is merging and the normalization device schematic diagram that the default distributing mode lower channel of Fig. 2 is estimated.As shown in the figure, this device comprises the activation situation detection module 31 of the movement training sequence that links to each other successively, the activation detection module 32 of channel code, the normalization module 34 of the channel estimating that the family is applied flexibly in the normalization module 33 of the merging of targeted customer's channel estimating and separate excitation thereof.

Claims (6)

1. a merging and method for normalizing of estimating at the default distributing mode lower channel, be used for TDS-CDMA system, it is characterized in that, described system adopts default distributing mode that movement training sequence is distributed, and has more than the effective situation of one movement training sequence in a plurality of movement training sequence of being assigned with of targeted customer; The method includes the steps of:

Step 1: 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

Step 2: the number N of determining the pairing activated code channel of each movement training sequence _i

Step 3: the channel estimating of each physical coded combination transfers information of targeted customer and the normalized of merging;

Step 4: the normalized of the channel estimating of other excited users;

The method of the normalized of described channel estimating is:

${\hat{h}}_r\left(k\right)=h_r\left(k\right)/\mathrm{sqrt}\left(N_r\right);$

Wherein, N _rExpression is corresponding to the number of the activated code channel of r movement training sequence;

h _r(k) value of k point of r movement training sequence of expression original channel estimation;

K represents k point in the channel estimation window of i movement training sequence.

2. merging and the method for normalizing of estimating at the default distributing mode lower channel as claimed in claim 1, it is characterized in that the channel estimating of each physical coded combination transfers information of targeted customer and the normalized of merging are that each physical coded combination transfers information is carried out independent normalized:

${\hat{h}}_r\left(k\right)=\frac{\underset{i=1}{\overset{N_{\mathrm{ownMA}}}{\mathrm{\Σ}}}(h_i\left(k\right)/\sqrt{H_i})}{N_{\mathrm{ownMA}}};$

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 the channel estimation window of i movement training sequence;

N _iThe number of representing i the pairing activated code channel 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. merging and the method for normalizing of estimating at the default distributing mode lower channel as claimed in claim 1, it is characterized in that the channel estimating of each physical coded combination transfers information of targeted customer and the normalized of merging are the normalizeds that each physical coded combination transfers information is integrated:

${\hat{h}}_r\left(k\right)=\left(\frac{\underset{i=1}{\overset{N_{\mathrm{ownMA}}}{\mathrm{\Σ}}}{h}_i\left(k\right)}{\underset{i=1}{\overset{N_{\mathrm{ownMA}}}{\mathrm{\Σ}}}\sqrt{N_i}}\right);$

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 the channel estimation window of i movement training sequence;

N _iThe number of representing i the pairing activated code channel 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. a merging and normalization device of estimating at the default distributing mode lower channel, be used for TDS-CDMA system, it is characterized in that, described system adopts default distributing mode that movement training sequence is distributed, and has more than the effective situation of one movement training sequence in a plurality of movement training sequence of being assigned with of targeted customer; This device comprises:

The activation situation detection module of 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 detection module of channel code is determined the number N of the activated code channel that each movement training sequence is shared _i

The normalization module of the merging of targeted customer's channel estimating;

The normalization module of the channel estimating of other excited users;

The method of the normalized of described channel estimating to other excited users is:

Wherein, N _rExpression is corresponding to the number of the activated code channel of r movement training sequence;

h _r(k) value of k point of r movement training sequence of expression original channel estimation;

K represents k point in the channel estimation window of i movement training sequence.

5. merging and the normalization device of estimating at the default distributing mode lower channel as claimed in claim 4, it is characterized in that the channel estimating of each physical coded combination transfers information of targeted customer and the normalized of merging are that each physical coded combination transfers information is carried out independent normalized:

${\hat{h}}_r\left(k\right)=\frac{\underset{i=1}{\overset{N_{\mathrm{ownMA}}}{\mathrm{\Σ}}}(h_i\left(k\right)/\sqrt{H_i})}{N_{\mathrm{ownMA}}};$

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 the channel estimation window of i movement training sequence;

N _iThe number of representing i the pairing activated code channel of movement training sequence;

N _OwnMAThe number of representing the movement training sequence of the pairing activation of current physical coded combination transfers information.

6. merging and the normalization device of estimating at the default distributing mode lower channel as claimed in claim 4, it is characterized in that the channel estimating of each physical coded combination transfers information of targeted customer and the normalized of merging are the normalizeds that each physical coded combination transfers information is integrated:

${\hat{h}}_r\left(k\right)=\left(\frac{\underset{i=1}{\overset{N_{\mathrm{ownMA}}}{\mathrm{\Σ}}}{h}_i\left(k\right)}{\underset{i=1}{\overset{N_{\mathrm{ownMA}}}{\mathrm{\Σ}}}\sqrt{N_i}}\right);$

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 the channel estimation window of i movement training sequence;

N _iThe number of representing i the pairing activated code channel of movement training sequence;

N _OwnMAThe number of representing the movement training sequence of the pairing activation of current physical coded combination transfers information.