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

Decision-feedback equalizer and method of updating feedback filter coefficients

A filter coefficient, equalizer technology, applied in equalizer, transmission control/equalization, transmission system, etc.

Inactive Publication Date: 2006-02-15
SAMSUNG ELECTRONICS CO LTD
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0048] In a "stop-and-start" LMS algorithm, the performing adaptive system may stop performing the adaptive if it is judged to be unreliable

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
  • Decision-feedback equalizer and method of updating feedback filter coefficients
  • Decision-feedback equalizer and method of updating feedback filter coefficients
  • Decision-feedback equalizer and method of updating feedback filter coefficients

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0095] Exemplary embodiments of the present invention will be fully described below with reference to the accompanying drawings showing exemplary embodiments of the present invention. The same reference numerals are used to designate the same components throughout the drawings.

[0096] Figure 9B yes Figure 9A A simplified model of the graph shown, may enable a robust adaptive algorithm according to an exemplary embodiment of the present invention.

[0097] Adaptive can be achieved by using such as Figure 9B The decision is performed in the feedback filter shown, which may have less frequency error (eg, may be no error). When the feedback filter, including decision errors (e.g. during error clusters), the algorithm can be performed with a reduced error (e.g. mean square error (MSE)) in order to reduce as Figure 8 Shown is the reduction in signal-to-noise ratio.

[0098] The development of robust adaptive algorithms is based on the above model and adaptive filtering. ...

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

Exemplary embodiments of the present invention provide an equalizer combined with a decoder and a method of updating filter coefficients. The method may include calculating output error signals ek, multiplying the output error signals by a parameter, obtaining a partial value by multiplying a delayed decoder decision stored in a filter delay line corresponding to an i-th filter coefficient by the result obtaining a partial value by multiplying a constant by a feedback coefficient and obtaining an updated value by adding the two partial values.

Description

[0001] Cross References to Related Applications [0002] This US nonprovisional patent application claims priority under 35 U.S.C. §119 to Korean Patent Application 2004-7530, filed February 5, 2004, the entire contents of which are hereby incorporated by reference. technical field [0003] Exemplary embodiments of the present invention relate to digital video broadcasting, and more particularly, to a decision-feedback equalizer that can receive various digital information, and a method of updating parameters thereof. Background technique [0004] For large amounts of digital information, such as voice, data, and / or video communications, an equalizer for digital video broadcasting may be required. Such digital information can be transmitted via various transmission media having different transmission characteristics. Transmission media can produce different kinds of ghosting, such as frequency-dependent phase, amplitude distortion, multipath reception or acoustic echo, and ...

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
IPC IPC(8): H04L25/03H03M13/27H03K5/159H03M13/41H04B7/005H04L1/00H04L27/01
CPCH04L1/006H04L1/0054H04L25/03267H04L2025/0349H04L2025/03617H04L1/0071H04L2025/03681H04L27/01
Inventor 瑟盖·齐得科夫
Owner SAMSUNG ELECTRONICS CO LTD