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Merging and normalizing method and device with down channel estimation in assigned distributing mode by user

A technology of channel estimation and allocation method, which is applied in the field of channel estimation merging and normalization, which can solve the problem that the shift training sequence cannot be used to resist noise and other interference, and achieve the effect of improving the system's ability to resist interference and noise

Active Publication Date: 2010-09-29
上海宣普实业有限有限公司
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Problems solved by technology

[0004] In the conventional detection algorithm, the shifted training information belonging to the same target user is not combined, but each shifted training sequence is processed separately, so when the system is in the user-specified allocation mode, when the user occupies multiple When the training sequence is shifted, the anti-noise and other interference characteristics when multiple shifted training sequences pass through the same channel cannot be utilized

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  • Merging and normalizing method and device with down channel estimation in assigned distributing mode by user
  • Merging and normalizing method and device with down channel estimation in assigned distributing mode by user
  • Merging and normalizing method and device with down channel estimation in assigned distributing mode by user

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Embodiment Construction

[0026] The following pass figure 2 image 3 , to introduce specific embodiments of the present invention in detail, so as to further understand the content of the present invention.

[0027] A method for combining and normalizing channel estimation in a time-division synchronous code division multiple access system, which is used in the system to allocate shifted training sequences using UESPECFIC MODE, and the target user is allocated multiple shifted The case where more than one shifted training sequence is valid in the training sequence, such as figure 2 As shown, it specifically includes the following steps:

[0028] Step 21. Detect the activation of the shifted training sequence: detect the activation of each shifted training sequence of multiple CCTrCHs of the target user and the activated shifted training sequences of other users, and obtain the corresponding activated shift of each CCTrCH of the target user. The number and number N of bit training sequences ownMA...

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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 [0001] The invention relates to a combination and normalization method of channel estimation in a TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system, specifically, a method for channel estimation in a TD-SCDMA system in a user-specified allocation mode. Methods and apparatus for estimating combining and normalizing. Background technique [0002] In the receiving device of the TD-SCDMA system, the allocation mode of the shift training sequence of the system is determined by the network layer. There are three allocation modes of the shift training sequence of the whole system: default allocation mode (DEFAULT MODE), common allocation mode (COMMON MODE) ) and user-specified allocation mode (UESPECFIC MODE), such as figure 1 shown. [0003] In the allocation of different shifted training sequences, the allocation of limited-length channel estimation resources in the system is different: when the allocation of the system shifted training s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04J3/14H04J13/02H04W72/04
Inventor 王炳立
Owner 上海宣普实业有限有限公司