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Method and device for demodulating signal

A technology for demodulating signals and signals, applied in the field of demodulating signals, can solve problems such as signal interference, and achieve the effect of improving performance

Active Publication Date: 2009-12-09
MEDIATEK INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of signal interference between different mobile devices in the prior art, the present invention provides a method and device for demodulating signals

Method used

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  • Method and device for demodulating signal

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Embodiment Construction

[0020] In order to make the manufacture, operation method, objectives and advantages of the present invention more obvious and easy to understand, several preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows:

[0021] The communication terminology used in this document is introduced below

[0022] JDV-Joint Detection Viterbi, joint detection Viterbi

[0023] SAIC-Single Antenna Interference Cancellation, single antenna interference cancellation

[0024] GSM-Global System for Mobile communications, Global System for Mobile Communications

[0025] CIR-Channel Impulse Response, channel impulse response

[0026] GMSK-Gaussian Minimum-Shift Keying, Gaussian minimum frequency shift keying

[0027] PSK-Phase-Shift Keying, phase shift keying

[0028] AWGN-Additive White Gaussian Noise, additive white Gaussian noise

[0029] TS-Training Sequence, training sequence

[0030] APM-Accumulated Path Metric, ...

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PUM

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Abstract

The present invention provides a method and a device for demodulating signal, wherein the method for demodulating the signal comprises the following steps: receiving a signal which comprises a required signal component and an interference signal component, the required signal component comprises a training sequence and at least one data segment; demodulating the training sequence and the corresponding part of the interference channel with a joint detection Viterbi algorithm for estimating the training sequence and interference signal sequence which are likely to be transmitted and generating the channel estimation values of the required signal component and the interference signal component; and demodulating at least one data segment according to the joint detection Viterbi algorithm withthe channel estimation values as the initial channel estimation values of the joint detection Viterbi algorithm. The method and the device for demodulating signal according to the invention can reduce interference and increase the quality of the received signal.

Description

technical field [0001] The present invention relates to a receiver structure, and more specifically, to a method and device for demodulating signals. Background technique [0002] When multiple mobile phones are used in one network, the signals related to different mobile phones may interfere with each other, causing the received signal to attenuate or even cause communication interruption. In some examples, a joint demodulation Viterbi (JDV) algorithm combined with Viterbi can be used to jointly demodulate (or decode) the desired signal and the interference signal, resulting in reduced interference and better received signal quality. Contents of the invention [0003] In order to solve the problem of signal interference between different mobile devices in the prior art, the present invention provides a method and device for demodulating signals. [0004] A method of demodulating a signal includes: receiving a signal including a desired signal component and an interfering...

Claims

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Application Information

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IPC IPC(8): H04B1/10H04B7/00
Inventor 卡斯汀·阿嘉得·派得森纳维迪·法特米-戈米严爱国贾森·泰勒纳维迪·法特米－戈米
Owner MEDIATEK INC
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