Unlock instant, AI-driven research and patent intelligence for your innovation.

Apparatus and method for estimating channel response

A channel and equation technology, applied in multi-frequency code systems, baseband system components, etc., can solve problems such as wrong interpolation results

Inactive Publication Date: 2017-05-24
MSTAR SEMICON INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In cases where the channel response changes rapidly over time (e.g. in a propagation environment with Doppler effect), this way of selecting the interpolation coefficients in the time domain is prone to erroneous interpolation results

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Apparatus and method for estimating channel response
  • Apparatus and method for estimating channel response
  • Apparatus and method for estimating channel response

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] An embodiment according to the present invention is a channel response estimation device, its functional block diagram is as follows figure 2 shown. The channel response estimating device 200 includes a receiving module 22 , an estimating module 24 , a coefficient calculating module 26 and an interpolating module 28 . In practical applications, the channel response estimating device 200 can be integrated in various ISDB-T wireless receiving systems, or exist independently. Through the following description, those with ordinary knowledge in the technical field of the present invention can understand that the application field of the channel response estimation device 200 is not limited to the ISDB-T system, but can be extended to various time-domain interpolation coefficients that need to determine the channel response Wireless receiving system. The following embodiments mainly take the case where the channel response estimating apparatus 200 is used to cooperate with...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a device and a method for estimating the channel effect. The method of the invention comprises the following steps: a receiving module receives a first data and a first reference data arriving in a first time segment, a second data and a second reference data arriving in a second time segment, and a third data and a third reference data arriving in a third time segment; an estimation module estimates channel effects corresponding to the first data, the third data, the first reference data, the second reference data and the third reference data; a coefficient calculation module performs a Wiener filter coefficient calculation program according to the channel effects corresponding to the first reference data, the second reference data and the third reference data to generate a set of time-domain interpolation coefficients; and an interpolation module interpolates by use of the channel effects corresponding to the first data and the third data according to the set of time-domain interpolation coefficients to generate a channel effect corresponding to the second data.

Description

technical field [0001] The present invention is related to digital signal broadcasting technology, and in particular how to estimate the channel effect of integrated services digital broadcasting-terrestrial (ISDB-T) signals. Background technique [0002] With the advancement of communication technology, the development of digital TV broadcasting is becoming more and more mature. In addition to transmission via cable lines, digital TV signals can also be transmitted in the form of wireless signals through equipment such as base stations or artificial satellites. Integrated Services Digital Terrestrial Broadcasting (ISDB-T) is one of the standards widely adopted in this field at present. During the transmission of wireless signals, it is inevitable that they will be affected and interfered by the transmission environment. The ISDB-T receiver must evaluate the corresponding channel response, and then eliminate the influence of the channel response on the signal content, so t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L27/26
Inventor 苏俊吉蓝景赋王俊杰童泰来林东昇
Owner MSTAR SEMICON INC