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Signal channel estimation method and device thereof

A technology of channel estimation and frequency domain channel, which is applied in the field of channel estimation to achieve the effect of reducing requirements and simplifying complexity

Active Publication Date: 2013-08-21
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0007] The purpose of the present invention is to provide a channel estimation method and its device to overcome the problem of Doppler frequency shift between training sequence and data sequence, so that the result of channel estimation is more accurate

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  • Signal channel estimation method and device thereof
  • Signal channel estimation method and device thereof
  • Signal channel estimation method and device thereof

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Embodiment Construction

[0030] In the following description, many technical details are proposed for the reader to better understand this application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions required by the claims of this application can be implemented.

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] The first embodiment of the present invention relates to a channel estimation method. This embodiment can be applied to the Global System for Mobile Communications GSM or the EDGE system of the GSM evolution scheme with enhanced data rate. In this embodiment, the data in the information data blocks on both sides of the received training sequence code is u...

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Abstract

The invention discloses a signal channel estimation method and a device thereof, which relate to the field of communication. In the invention, data in information data blocks of both sides of a received training sequence code is used as receiving data of the signal channel estimation. Because the signal channel estimation relatively obtained through the training sequence is directly used as the signal channel estimation of the data sequence in a traditional signal channel estimation method based on the training sequence, the server loss of the performance can be caused. Thereby, the inventioncan avoid the problem of server loss of the performance caused by Doppler frequency shift between the training sequence and the data sequence. In addition, the data information sequence has longer length than the training sequence, so the data in the information data blocks of both sides of the training sequence code is used as the receiving data of the signal channel estimation, and the result of the signal channel estimation is more accurate.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to channel estimation technology in the field of communications. Background technique [0002] The traditional Global System for Mobile communication ("GSM") adopts a time-domain channel estimation method based on training sequence, and uses the training sequence code in the middle of GSM burst (data burst) to perform time-domain correlation calculations to obtain channel information. The time-domain impulse response is used as the channel impulse response of the data part on both sides. [0003] The structure of a burst in the GSM system is as figure 1 As shown (4 bursts form a GSM subframe), the 26 symbols in the middle are training sequence codes TS used for channel estimation, and two data blocks composed of 57 symbols on both sides are information data blocks. A coding block includes such four bursts, a total of 8 information data blocks. The remaining symbols are protection sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L25/03H04L25/02H04L1/00
Inventor 周秦英张小东章程
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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