公开(公告)号：EP2188915A4

公开(公告)日：2015-11-11

申请号：EP08753331

申请日：2008-05-06

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PARK SUNG-IK ,  KIM HEUNG-MOOK ,  PARK SO-RA ,  LEE YONG-TAE ,  LIM JONG-SOO ,  LEE SOO-IN

IPC: H04B7/26 ,  H04B7/155 ,  H04L25/02

CPC classification number: H04L25/0212 ,  H04B7/155 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0228 ,  H04L25/0246

Abstract: Provided is an apparatus and method for estimating inverse channel of a repeater's receiving channel, which ensures stability and causality by generating a time-domain filter coefficient having information on an inverse channel of repeater's receiving channel from a signal transmitted from a main transmitter or another repeater. The apparatus includes: a channel estimator for estimating a channel established by a transmission path from a received signal; an inverse minimum phase filter coefficient generator for generating inverse channel of a minimum phase channel from the estimated channel, and converting the inverse channel of the minimum phase channel into a time-domain filter coefficient; an inverse group delay filter coefficient generator for generating a time-domain filter coefficient by using the estimated channel and the minimum phase channel; and a combiner for generating an inverse channel of a receiving channel in a time domain by combining the filter coefficient and the filter coefficient.

公开(公告)号：EP2080289A4

公开(公告)日：2014-08-13

申请号：EP07833325

申请日：2007-10-12

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PARK SUNG-IK ,  LEE JAE-YOUNG ,  SEO JAE-HYUN ,  EUM HO-MIN ,  KIM HEUNG-MOOK ,  LIM JONG-SOO ,  LEE SOO-IN

IPC: H04B7/155 ,  H04B1/707 ,  H04H20/06

CPC classification number: H04H20/06 ,  H04B1/707 ,  H04B7/15528 ,  H04H20/12 ,  H04H60/41

公开(公告)号：EP2299704A4

公开(公告)日：2014-03-05

申请号：EP09755053

申请日：2009-05-29

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PARK SUNG-IK ,  LIM HYOUNGSOO ,  KIM HEUNG-MOOK ,  LEE SOO-IN

IPC: H04N7/08 ,  H04L1/00

CPC classification number: H04H40/18 ,  H04B1/709 ,  H04L1/0041 ,  H04L1/0047 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L2001/0093

Abstract: A method and apparatus for transmitting/receiving broadcasting-communication data is provided. The apparatus includes: an original signal generator configured to receive the original data and generate baseband original signals; a first modulator configured to receive the baseband additional signals and generate original signals of a predetermined band; an additional signal generator configured to receive the additional data and generate baseband additional signals; a second modulator configured to receive the baseband additional signals and generate additional signals of a predetermined band; an average power controller configured to control an average power of the additional signals of the predetermined band; an inserter configured to insert the additional signals of the predetermined band with a controlled average power to the original signals of the predetermined band to thereby generate mixed signals of a predetermined band; and a transmitter configured to transmit the mixed signals of the predetermined band.