-
1.发明申请CHANNEL EQUALIZATION APPARATUS AND METHOD BASED ON PILOT SIGNALS FOR DOCSIS DOWN STREAM SYSTEM 审中-公开信道均衡设备和基于DOCSIS DOWN STREAM系统的引导信号的方法公开(公告)号：US20170048094A1
公开(公告)日：2017-02-16
申请号：US15211360
申请日：2016-07-15
Inventor： Jae Hwui BAE , Sang Jung RA , Jae Ho LEE , Dong Joon CHOI , Nam Ho HUR
CPC classification number: H04L5/0048 , H04L12/2801 , H04L25/022 , H04L25/0232 , H04L25/024 , H04L25/03159 , H04L27/2613 , H04L27/2647
Abstract: An apparatus and a method of channel estimation and equalization based on pilot signals, which acquire a channel estimation vector and effectively perform channel equalization by using scattered pilots and continuous pilots in a communication system to which an OFDM symbol is applied, such as a DOCSIS 3.1 Down stream PHY system using multiple carriers.
Abstract translation: 基于导频信号的信道估计和均衡的装置和方法，其通过在应用OFDM符号的通信系统中使用分散导频和连续导频来获取信道估计向量并有效地执行信道均衡，诸如DOCSIS 3.1 下行PHY系统使用多个载波。
-
2.发明申请公开(公告)号：US20170279648A1
公开(公告)日：2017-09-28
申请号：US15403738
申请日：2017-01-11
Inventor： Jin Hyuk SONG , Sang Jung RA , Jae Hwui BAE , Dong Joon CHOI , Nam Ho HUR
IPC: H04L27/26
CPC classification number: H04L27/2621 , H04L27/2618 , H04L27/3411
Abstract: Disclosed is a an apparatus for reducing a reducing a peak to average power ratio (PAPR) for layer division multiplexing (LDM) in an orthogonal frequency division multiplexing (OFDM) system, the apparatus may include a peak remover configured to detect a peak power value of a subcarrier signal that is input and generate a peak removal signal that decreases the detected peak power value, and a processor configured to perform constellation remapping on a first signal generated by combining the subcarrier signal and the peak removal signal and then generate a second signal into which additional data is inserted.
-
3.发明申请METHOD AND APPARATUS FOR INSERTING BROADCAST PROGRAM BY DETECTING AVAILABLE CHANNEL OVER HYBRID FIBER COAX NETWORK OR OPTICAL CABLE NETWORK 有权通过检测混合光纤网络或光缆网络中的可用信道来插入广播节目的方法和装置公开(公告)号：US20130283331A1
公开(公告)日：2013-10-24
申请号：US13868674
申请日：2013-04-23
Inventor： Yang Su KIM , Han Seung KOO , Jae Ho LEE , Sang Jung RA , Dong Joon CHOI , Nam Ho HUR
IPC: H04N21/2385
CPC classification number: H04N21/2385 , H04H20/06 , H04H60/41 , H04N21/2383 , H04N21/6118
Abstract: An apparatus for combining a broadcasting channel may include a channel detector to detect a vacant Radio Frequency (RF) broadcasting channel used by a photoelectric converter that converts a first broadcast program as an optical signal to a first RF signal, a broadcast receiving interface to receive at least one second broadcast program, a broadcast modulator to generate a second RF signal by modulating the second broadcast program using the vacant RF broadcasting channel, and a channel combiner to combine a broadcasting channel used for the first RF signal and the vacant RF broadcasting channel.
Abstract translation: 用于组合广播信道的装置可以包括：信道检测器，用于检测由光电转换器使用的空闲射频（RF）广播信道，其将作为光信号的第一广播节目转换为第一RF信号;广播接收接口，用于接收 至少一个第二广播节目，通过使用空闲RF广播频道调制第二广播节目来产生第二RF信号的广播调制器，以及组合用于第一RF信号的广播频道和空闲RF广播频道 。
-
4.发明申请公开(公告)号：US20170324541A1
公开(公告)日：2017-11-09
申请号：US15441799
申请日：2017-02-24
Inventor： Jae Hwui BAE , Sang Jung RA , Jin Hyuk SONG , Dong Joon CHOI , Nam Ho HUR
CPC classification number: H04L7/06 , H04L1/0071 , H04L5/005 , H04L5/0053 , H04L27/2613 , H04L27/2657 , H04L27/2663 , H04L27/2671 , H04L27/2675 , H04L27/389 , H04L69/323
Abstract: Disclosed are a method for acquiring synchronization in a cable network, and a physical (PHY) transmitter and PHY receiver. The method for acquiring synchronization in a cable network according to an embodiment includes receiving, by a PHY receiver, a signal from a PHY transmitter, and acquiring, by the PHY receiver, channel synchronization when a symbol in which a channel preamble exists is detected from the received signal and a position of a frequency in which a channel subcarrier exists is detected from the detected symbol by performing a cross correlation operation on the received signal and the channel preamble.
-
-
-
Search Results
4
records
(took 0.013 seconds)
