Data channel interference cancellation method and system

A data channel and interference cancellation technology, applied in the field of communication, can solve the problems that do not involve channel recoding and channel reconstruction, and achieve the effect of improving the efficiency of reconstruction cancellation, improving the utilization rate of hardware resources, and improving the efficiency of cancellation

Active Publication Date: 2015-02-25
SANECHIPS TECH CO LTD
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  • Abstract
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Problems solved by technology

[0004] At present, the related technologies of data channel interference cancellation are only based on partial implementation of interference cancellation, such as: only involve the reconstruction device in the implementation of interference cancellation, or only involve the improvement of interference cancellation algorithm, or only involve the application of interference cancellation in a certain aspect, It does not involve research on the entire process of channel recoding, channel estimation, and channel reconstruction

Method used

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  • Data channel interference cancellation method and system
  • Data channel interference cancellation method and system
  • Data channel interference cancellation method and system

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Embodiment Construction

[0068] The basic idea of ​​the embodiment of the present invention is: send different frequency offset parameters to the antennas that constitute the antenna pair, and reconstruct the data channel in units of reconstruction units; then subtract the reconstructed data from the antenna data to complete Interference cancellation.

[0069] Wherein, the reconstructing the data channel is to preferentially select a path with higher energy for reconstruction according to path energy.

[0070] Furthermore, full-pipeline bit-level channel re-encoding is used in channel coding, and channel estimation is calculated using antenna data based on data channels in channel estimation, and channel estimation is performed by multiplexing data channel antenna data.

[0071] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0072] figure 1 It is a schematic diagram of the processing flow of the data channel i...

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Abstract

The present invention discloses a data channel interference cancellation method, including: engaging in the bit-level channel recoding of received transmission block data, and engaging in the channel estimation of said encoded data and multiplexed data channel antenna data, thus obtaining channel estimation data; using said channel estimation data to engage in data channel reconstruction of the encoded data, wherein the unit used is the reconstruction unit; taking the difference of the obtained post-reconstruction data and the antenna data, thus achieving interference cancellation. The present invention additionally discloses a data channel interference cancellation system.

Description

technical field [0001] The present invention relates to interference cancellation technology in the communication field, in particular to a method and system for data channel interference cancellation in Wide-band Code Division Multiple Access (WCDMA). Background technique [0002] In WCDMA technology, different users spread at the same frequency at the same time, and the distinction between different users depends on different codes; specifically, for each channel, Orthogonal Variable Spreading Factor (codes ), OVSF) for spreading and scrambling with a scrambling code, as long as there is a difference between the OVSF code and the scrambling code, different channels in the same frequency band and time slot can be distinguished. [0003] Multiple Access Interference (MAI) is a phenomenon that the receiving end cannot completely eliminate the interference of other users due to the non-orthogonality of the codes; moreover, the more users, the more serious the MAI. If the info...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L25/03H04J13/00H04J13/20
CPCH04L1/00H04L1/0048H04J11/0026H04L49/90H03M13/2792H04B15/00H04L1/0042H04L1/0045H04B1/7103
Inventor 田宇
Owner SANECHIPS TECH CO LTD
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