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Mobile terminal and its receiving signal processing method and device

A technology of receiving signal processing and processing method, which is applied in the field of mobile terminal and its receiving signal processing, and can solve problems such as staying

Active Publication Date: 2019-11-22
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although some adaptive filtering methods have been proposed in the prior art, most of them use real signal models and stay at the academic research stage, and cannot be directly applied to mobile communication systems for adaptive tracking of transmission system distortion (especially in 3G systems Down)

Method used

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  • Mobile terminal and its receiving signal processing method and device
  • Mobile terminal and its receiving signal processing method and device
  • Mobile terminal and its receiving signal processing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123] As described below, an embodiment of the present invention provides a method for processing a received signal.

[0124] Such as figure 1 As shown, the received signal processing method provided in this embodiment includes:

[0125] S101. Calculate the filter coefficient h(i) to be estimated.

[0126] S102. Filter the received signal by using h(i) as a filter coefficient.

[0127] Estimating the distortion of the transmission system is a prerequisite for subsequent compensation. Therefore, which algorithm to use to estimate the distortion of the transmission system is very important for the mobile terminal.

[0128] refer to figure 2 The flow chart of the method for calculating the filter coefficient h(i) to be estimated will be described in detail through specific steps below:

[0129] The calculation of the filter coefficient h(i) to be estimated includes:

[0130] Suppose the complex signal model of the desired signal is s(i)=s I (i)+js Q(i), i=0,1,L-1; the c...

Embodiment 2

[0193] As described below, an embodiment of the present invention provides a received signal processing apparatus.

[0194] refer to image 3 The structure block diagram of the received signal processing device is shown.

[0195] The received signal processing device includes: a computing unit 301 and a filtering unit 302; wherein:

[0196] Calculation unit 301, adapted to calculate the filter coefficient h(i) to be estimated;

[0197] The filtering unit 302 is adapted to use h(i) as a filter coefficient to filter the received signal.

[0198] Wherein, the computing unit 301 computing the filter coefficient h(i) to be estimated includes:

[0199] Let the complex signal model of the desired signal be s(i)=s I (i)+js Q (i), i=0,1,...,L-1; the complex signal model of the output signal is z(i)=z I (i)+jz Q(i), i=0,1,...,L-1;

[0200] to initialize;

[0201] Convert the complex signal model s(i) of the desired signal to the real signal model of the desired signal Convert...

Embodiment 3

[0254] As described below, an embodiment of the present invention provides a mobile terminal.

[0255] The difference from the prior art is that the mobile terminal further includes a received signal processing device as provided in the embodiment of the present invention. Therefore, the mobile terminal can use a specific algorithm to calculate the filter coefficient h(i) to be estimated, realize adaptive tracking of the distortion of the transmission system in the mobile communication system, and can adapt to the time-varying characteristics of the transmission channel and the nonlinear characteristics of the device On this basis, the h(i) calculated by this algorithm is used as the filter coefficient to filter the received signal, which can reduce the transmission signal caused by the existence of multipath components in the transmission channel and the nonlinear characteristics of the device. resulting in intersymbol interference.

[0256] In a specific implementation, the...

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Abstract

The mobile terminal and its receiving signal processing method and device, the processing method includes: initializing; converting the complex signal model s(i) of the desired signal into a real signal model of the desired signal and outputting the complex signal model z(i) of the signal Convert to the real signal model i=i+1 of the output signal, and judge whether i is satisfied

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a mobile terminal and a method and device for processing received signals thereof. Background technique [0002] In a mobile communication system, due to the existence of multipath components in the transmission channel and the nonlinear characteristics of devices, the transmission signals in the system often have intersymbol interference. Only by compensating the distortion of the transmission system and eliminating the intersymbol interference of the transmission signal, can stable system performance be obtained. [0003] However, since the characteristics of the transmission channel and the nonlinear characteristics of the device are time-varying, the distortion of the transmission system needs to be adaptively tracked first, and then the compensation can be performed. [0004] Although some adaptive filtering methods have been proposed in the prior art...

Claims

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Application Information

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IPC IPC(8): H04B1/7107H04B1/711H04B17/391
Inventor 李俊强黄宗治
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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