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Channel estimation method and device

A channel estimation and post-processing technology, applied in baseband system components, multi-frequency code systems, etc., can solve the problem of inaccurate channel estimation results, and achieve the effect of improving accuracy

Inactive Publication Date: 2014-03-12
MARVELL TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there is currently a lack of methods and / or devices for channel estimation in co-frequency networking under the condition of effectively removing co-channel interference, so the current user equipment has the problem of inaccurate channel estimation results

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  • Channel estimation method and device

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Embodiment Construction

[0019] Features and exemplary embodiments of various aspects of the invention will be described in detail below. The following description, taking a TD-SCDMA application as an example, covers many specific details in order to provide a comprehensive understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a clearer understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configuration and algorithm presented below, but covers any modification, replacement and improvement of related elements, components and algorithms without departing from the spirit of the present invention.

[0020] figure 1 A brief block diagram of a TD-SCDMA wireless communication system is shown. Such as figure 1 As shown, the wir...

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Abstract

The invention discloses a channel estimation method and a channel estimation device. The device comprises a channel estimation unit, configured for calculating the first channel estimation result based on the reception training sequence and the given training sequence of the cell; a rear-mounted processing unit, configured for finding out the noise point from the first channel estimation result of the cell and setting the channel estimation result at the noise point as zero to obtain the second channel estimation result of the cell; an interference rebuilding unit, configured for calculating the rebuilding interference value of the cell by using the second channel estimation result and the given training sequence of the cell and calculating the rebuilding interference value weighted sum of the cofrequency cells by using the rebuilding interference value of the cofrequency cell and the weighting value for the cell. The channel estimation unit further re-estimates the first channel estimation result of the cell based on the reception training sequence, the given training sequence, and the rebuilding interference value weighted sum of the cell.

Description

technical field [0001] The present invention relates to the communication field, in particular to a channel estimation method and device applicable to a time division synchronous code division multiple access system. Background technique [0002] With the development of wireless communication technology and the rise of the third generation mobile communication (3G) in the world, the wireless resources are becoming increasingly tense. The Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, one of the mainstream standards of 3G, is no exception. In order to improve the spectrum utilization rate of TD-SCDMA system, the same frequency networking becomes an effective solution. In the same-frequency TD-SCDMA system, each local cell has multiple other cells that use the same frequency as it, resulting in co-frequency interference. [0003] In the TD-SCDMA system, channel estimation is the basis of key technologies such as joint detection, measurement, and s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L27/26
Inventor 周亮刘石陈晓春姚天翔沈立芸朱仕轶周璇郑明朱学庆李茜
Owner MARVELL TECH SHANGHAI