公开(公告)号：US20140307830A1

公开(公告)日：2014-10-16

申请号：US14245277

申请日：2014-04-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young Kwon HAHM ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L25/08 ,  H04L27/26 ,  H04L25/02

CPC classification number: H04L27/2662 ,  H04L5/005 ,  H04L25/0204 ,  H04L25/03821 ,  H04L27/2657 ,  H04L27/3455

Abstract: An apparatus for offset compensation in high-order modulated orthogonal frequency division multiplexing (OFDM) transmission, the apparatus including a transmitter to configure a pilot signal for transmission and reception synchronization and distortion estimation as a frame, and transmit the frame, and a receiver to estimate a channel distortion of a received signal by estimating and compensating for a clock offset and a frequency offset with respect to the received signal.

Abstract translation: 一种用于高阶调制正交频分复用（OFDM）传输中的偏移补偿的装置，该装置包括发射机，用于将用于发射和接收同步的导频信号和失真估计配置为帧，并将接收机发送到 通过估计和补偿相对于接收信号的时钟偏移和频率偏移来估计接收信号的信道失真。

公开(公告)号：US20130148028A1

公开(公告)日：2013-06-13

申请号：US13711574

申请日：2012-12-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young Kwon HAHM ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04N5/44

CPC classification number: H04N5/44 ,  H04N5/4401 ,  H04N21/4263 ,  H04N21/438 ,  H04N21/44209 ,  H04N21/4425 ,  H04N21/6131 ,  H04N21/631 ,  H04N21/6405

Abstract: Provided is a broadcasting receiver including a broadcasting signal receiving unit to receive a broadcasting signal via a broadcasting network, a viewing possibility determining unit to determine whether it is possible for a viewer to view the broadcasting signal, a multicasting signal receiving unit to receive a multicasting signal via a wireless communication network, a switching and combining unit to combine or switch the received broadcasting signal and the multicasting signal, and a controlling unit to request the multicasting signal transmitting unit to multicast the multicasting signal based on the determination result, to request the multicasting signal receiving unit to receive the multicasting signal, and to control the switching and combining unit depending on whether the multicasting signal is received.

Abstract translation: 提供了一种广播接收机，包括：广播信号接收单元，用于经由广播网络接收广播信号;观看可能性确定单元，用于确定观众是否可以观看广播信号;多播信号接收单元，用于接收组播 信号通过无线通信网络，切换和组合单元组合或切换所接收的广播信号和组播信号;以及控制单元，基于确定结果请求组播信号发送单元多播组播信号，以请求 组播信号接收单元接收组播信号，并根据接收到的组播信号来控制切换和组合单元。

公开(公告)号：US20140133597A1

公开(公告)日：2014-05-15

申请号：US13779933

申请日：2013-02-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Young Kwon HAHM ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L27/26

CPC classification number: H04L27/2602 ,  H04L27/2613 ,  H04L27/2647 ,  H04L27/3455

Abstract: Disclosed are a method for transmitting and receiving data and an apparatus thereof, and more particularly, a method for transmitting and receiving data and an apparatus thereof in an orthogonal frequency division multiplexing (OFDM) system. The method for transmitting data in an OFDM system according to the present invention includes encoding and modulating data to be transmitted, configuring the modulated data by a frame constituted by N (an integer larger than 0) OFDM symbols, and transmitting the configured frame, in which the frame includes a first OFDM symbol including a pilot symbol and a second OFDM symbol including lower-order modulated than the modulated data.

Abstract translation: 公开了一种用于发送和接收数据的方法及其装置，更具体地说，涉及一种用于在正交频分复用（OFDM）系统中发送和接收数据的方法及其装置。 在根据本发明的OFDM系统中发送数据的方法包括编码和调制要发送的数据，通过由N（大于0的整数）OFDM符号构成的帧来配置调制数据，并将配置的帧发送到 该帧包括包括导频符号的第一OFDM符号和包括比调制数据调制的低阶的第二OFDM符号。