Reconstruction method and device of enhanced dedicated channel

A technology for enhancing dedicated channels and reconstructing data, applied in the field of communications, can solve problems such as inability to reconstruct complete TTI, and achieve the effect of improving efficiency

Inactive Publication Date: 2011-06-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To meet the delay requirement, the reconstruction scheme after decoding cannot reconstruct the complete TTI, and cannot benefit multiple users of the WCDMA system simultaneously and effectively

Method used

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  • Reconstruction method and device of enhanced dedicated channel
  • Reconstruction method and device of enhanced dedicated channel
  • Reconstruction method and device of enhanced dedicated channel

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Experimental program
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Effect test

Embodiment 1

[0027] The first embodiment of the present invention proposes a method for reconfiguring an enhanced dedicated channel, the process of which is as follows figure 1 shown, including:

[0028] Step 101, obtaining antenna data;

[0029] Step 102, demodulating the antenna data to obtain the enhanced dedicated channel data of the cancellation user;

[0030] Step 103, calculating the logarithmic likelihood ratio of the enhanced dedicated channel data of the canceling user and performing a hyperbolic tangent judgment to obtain a judgment result;

[0031] Step 104: Reconstruct antenna data of the canceled user by using the decision result to obtain reconstructed data of the canceled user.

[0032] In the embodiment of the present invention, the reconstruction can be performed by calculating the log likelihood ratio and performing hyperbolic tangent judgment, so as to improve the reconstruction efficiency.

Embodiment 2

[0034] The second embodiment of the present invention proposes an enhanced dedicated channel reconstruction method, which is improved on the basis of the first embodiment, including:

[0035] Step 201, acquire antenna data.

[0036] Specifically, there may be multiple data on the antenna. Then in one embodiment of the present invention, the real-time antenna data of at least two cancellation users on the real-time antenna can be obtained, and the data of each cancellation user can be demodulated and reconstructed in parallel to obtain the cancellation data.

[0037] Wherein, performing demodulation and reconstruction in parallel refers to performing demodulation and reconstruction on multiple real-time antenna data at the same time.

[0038] Step 202, demodulate the antenna data to obtain the enhanced dedicated channel data of the cancellation user;

[0039] Step 203, calculating the log-likelihood ratio (LLR) of the enhanced dedicated channel data of the canceled user, and...

Embodiment 3

[0063] The third embodiment of the present invention proposes an enhanced dedicated channel reconstruction device, the flow structure of which is as follows Figure 4 shown, including:

[0064] Obtaining module 1, used to obtain antenna data;

[0065] The demodulation module 2 is used to demodulate the antenna data to obtain the enhanced dedicated channel data of the cancellation user;

[0066] The obtaining module 3 is used to obtain the logarithmic likelihood ratio of the enhanced dedicated channel data of the canceling user and perform a hyperbolic tangent judgment to obtain a judgment result;

[0067] The reconstruction module 4 is configured to use the decision result to reconstruct the antenna data of the canceled user to obtain the reconstructed data of the canceled user.

[0068] In the embodiment of the present invention, the reconstruction can be performed by calculating the log likelihood ratio and performing hyperbolic tangent judgment, so as to improve the recon...

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Abstract

The invention provides a reconstruction method and device of an enhanced dedicated channel, belonging to the technical field of communications. The device disclosed by the embodiment of the invention comprises an acquiring module, a demodulating module, an obtaining module and a reconstructing module. The method comprises the following steps of obtaining antenna data; demodulating the antenna data to obtain the enhanced dedicated channel data of an offset user; obtaining a likelihood ratio of the enhanced dedicated channel data of the offset user and performing hyperbolic tangent judgment to obtain a judgment result; and reconstructing the antenna data of the offset user according to the judgment result to obtain the reconstruction data of the offset user. The embodiment of the invention can be used for reconstructing by obtaining the likelihood ratio and performing the hyperbolic tangent judgment, so that the reconstruction efficiency is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for reconfiguring an enhanced dedicated channel. Background technique [0002] With the rapid development of mobile communications, spectrum resources are becoming increasingly scarce. In order to improve spectrum utilization, various advanced technologies have been proposed to improve system spectrum utilization. Among them, multi-user detection has received extensive attention. MUD (Multi-user Detection, multi-user detection technology) reconstructs these interferences at the receiving end, and then passes IC (Interference Cancellation, interference cancellation) is performed on the reconstructed interference to improve performance. [0003] The WCDMA system uses different codes to distinguish different users. Due to the non-orthogonal nature of the codes, it is impossible for the receiving end to completely eliminate the interference of other users;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/08H04B1/7105H04L25/02H04L1/00
Inventor 赵宇翔王小璐
Owner HUAWEI TECH CO LTD
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