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Signal demodulation method and receiving device

A signal demodulation and receiving device technology, applied in the field of communication, can solve problems such as low resolution, inaccurate synchronization position, poor demodulation performance, etc., and achieve the effect of improving selection accuracy, shortening sampling interval, and increasing sampling times

Inactive Publication Date: 2012-01-11
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] Embodiments of the present invention provide a signal demodulation method and a receiving device to solve the problems of low resolution, inaccurate synchronization position, and poor demodulation performance of existing receiving devices

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  • Signal demodulation method and receiving device
  • Signal demodulation method and receiving device
  • Signal demodulation method and receiving device

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Embodiment Construction

[0022] 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.

[0023] The signal demodulation method provided by the embodiment of the present invention, such as figure 1 shown, including:

[0024] S101. The receiving device outputs at least 2 sample point data within 1 symbol period after automatic gain control processing.

[0025] Exemplarily, after automatic gain control processing, 2 sample point data within 1 symbol period can be output; or, 3 sample point data within 1 symbol period can be output; or, at least 4 sa...

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Abstract

The invention provides a signal demodulation method and receiving device, involving the area of communication, to solve the low resolution, inaccuracy of synchronization position, the poverty of demodulation performance of the existing receiver. The methods include, outputing at least two data samples in one symbol period after automatic gain control processing; conducting synchronization position calculation, channel estimating, and carrier to interference ratio calculation respectively with the said at least two data samples;selecting the sample data with the largest carrier to interference ratio as data to be demodulated, then, choosing the results of the channel estimation and synchronization position calculation of the said sample data to demodulate. The invention is employed for signal demodulation.

Description

technical field [0001] The present invention relates to the communication field, in particular to a signal demodulation method and a receiving device Background technique [0002] An important feature of wireless communication is the existence of multipath propagation. Signals from the same transmitting source arrive at the same receiver through different propagation paths, often with a slight time difference. These successively arriving signals interfere with each other, forming multipath fading. This will cause intersymbol interference in the signal reaching the receiver, reducing the signal-to-noise ratio of the signal. [0003] In the 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) agreement, according to different types of multipath fading, a variety of typical channel scenarios of GSM (global system for mobile communications, Global System for Mobile Communications) are defined, including Static (static), TU (typical urban), RA (rural ar...

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Application Information

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IPC IPC(8): H04B1/7115
CPCH04B1/7115H04L25/0202
Inventor 张玉伦范文奇黄抒帆
Owner HUAWEI TECH CO LTD
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