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Method and device of data demodulation

A data demodulation and data technology, which is applied in the field of communication, can solve the problems of poor data demodulation performance and data demodulation performance, and achieve the effect of improving data demodulation performance

Active Publication Date: 2013-05-08
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

In the interference cancellation process, the data demodulation performance after interference cancellation is worse than that before interference cancellation

Method used

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  • Method and device of data demodulation
  • Method and device of data demodulation

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] An embodiment of the present invention provides a data demodulation method, such as figure 1 As shown, the method includes:

[0029] Step 101, acquire a first noise interference matrix according to received data, and acquire a first weight factor according to the first noise interference matrix.

[0030] Specifically, in this embodiment, the data processing device in the base station can obtain the relevant parameters required to obtain the first noise...

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Abstract

The invention discloses a method and a device of data demodulation, and relates to the technical field of communication. The method and the device of the data demodulation are capable of obtaining a weighting factor again and conduct the data demodulation by using the new weighting factor. The method of the data demodulation comprises the following steps: obtaining a first weighting factor according to received data; processing the received data according to the first weighting factor and obtaining first data; carrying out demodulation for data before interference cancellation for the first data and obtaining demodulation data before the interference cancellation; after carrying out interference cancellation for the demodulation data before the interference cancellation, obtaining a second noise interference matrix according to efficiency of the interference cancellation or according to total energy of receiving bandwidth, and obtaining a second weighting factor according to a second noise interference matrix; processing the data processed after the interference cancellation according to the second weight factor and obtaining second data, wherein the data processed after the interference cancellation is the data which is obtained after the first data is processed by the interference cancellation; and carrying out data demodulation after the second data are processed interference cancellation. According to the method and the device of the data demodulation, data demodulation performance after the interference cancellation can be improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data demodulation method and device. Background technique [0002] WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access) as a third-generation mobile communication standard is widely used in the field of mobile communication. Compared with traditional mobile communication systems, interference is one of the main problems affecting the performance of WCDMA systems. one. In order to solve the interference problem, technologies such as IC (Interference Cancellation, interference elimination) and GRAKE receiver (Generalized RAKE Receiver, generalized RAKE receiver) are introduced at the physical layer to eliminate inter-user interference and inter-path interference, for example: relative to ordinary signals, Cancel those strong interference signals with strong interference. For strong interference signals, the inter-path interference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/00H04L25/02
Inventor 王宁杨晓辉
Owner HUAWEI TECH CO LTD
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