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A serial interference eliminated multiple cell channel estimation method and its device

A technology for serial interference cancellation and channel estimation, applied in the field of communication networks

Active Publication Date: 2011-05-18
TD TECH COMM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When performing channel estimation on a specific cell, signals from other cells will be considered as interference signals, so the result of channel estimation is not ideal

Method used

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  • A serial interference eliminated multiple cell channel estimation method and its device
  • A serial interference eliminated multiple cell channel estimation method and its device
  • A serial interference eliminated multiple cell channel estimation method and its device

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Experimental program
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Embodiment Construction

[0039] Hereinafter, the present invention will be described in detail in conjunction with the accompanying drawings.

[0040] Step 1, since the local cell signal will affect the accuracy of adjacent cell channel estimation during channel estimation, so as an option, the existing channel estimation method can be used to analyze the channel impulse response (CIR) of the local cell first. ) to estimate, and reconstruct the training sequence signal of the local cell, so that the interference of the local cell can be removed from the signal received by the user terminal.

[0041] Step 2, as an option, estimate the power of adjacent cells, and sort the adjacent cells according to their interference strength.

[0042] For the SIC method, it is best to eliminate the largest interference signal from a certain adjacent cell among the received adjacent cell signals, and then eliminate the second-intensity interference signal from another adjacent cell, and again, An interfering signal f...

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Abstract

The related multi-subzone channel estimation method based on SIC comprises: with signal from one signal receiver as the base sequence, 1. estimating the channel of near subzone, and reconstructing the training sequence signal of this subzone; 2. removing the reconstructed training signal from the base sequence, and taking the output as the base signal; 3. cyclic executing step 1-2; 4. outputting local subzone signal; and 5. estimating the local subzone signal. This invention obtains better result than traditional technology.

Description

technical field [0001] The invention relates to the field of communication networks, in particular to a time division synchronous code division multiple access system, specifically a method and device for local cell channel estimation based on multiple cells. Background technique [0002] The Chinese meaning of TD-SCDMA is Time Division Synchronous Code Division Multiple Access. This communication technology also belongs to a technical standard of wireless communication. It was first proposed by China and based on this Radio Transmission Technology (RTT) Cooperating with international partners, it completed the TD-SCDMA standard and became a member of the CDMA Time Division Duplex Mode (CDMA TDD) standard. This is a pioneering work in China's mobile communication industry, and it is also China's contribution to the development of the third generation of mobile communication. In competition with the 3G standards proposed by Europe and the United States, TD-SCDMA proposed by C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L25/02
Inventor 薛强李克宋晓勤
Owner TD TECH COMM TECH LTD