公开(公告)号：KR1020100088266A

公开(公告)日：2010-08-09

申请号：KR1020090007374

申请日：2009-01-30

Applicant: 한국전자통신연구원 ,  서울대학교산학협력단

Inventor： 노태균 ,  정병장 ,  안재영 ,  이판형 ,  이재홍

IPC: H04B7/14

CPC classification number: H04B7/026 ,  H04B7/082 ,  H04L1/0077 ,  H04L1/1829

Abstract: PURPOSE: An apparatus and a method for communicating cooperatively using network coding in an uplink system comprised of a multiple relay device are provided to code and transmit transmission signals which need retransmission through a selected relay device among relay devices, thereby maximizing a diversity gain and facilitating adaptive communication due to a network change. CONSTITUTION: A signal receiving unit(113) receives a plurality of transmission signals from a plurality of transmitters(101). A request receiving unit(115) receives retransmission requests about some among the transmission signals. A transmitting unit(117) codes some transmission signals corresponding to the retransmission requests through a network and transmits the coded signals to a receiver.

Abstract translation: 目的：提供一种在由多个中继设备组成的上行链路系统中协同使用网络编码进行通信的装置和方法，用于通过中继设备之间的所选择的中继设备对需要进行重传的传输信号进行编码和发送，从而最大限度地提高分集增益 由于网络变化而导致自适应通信。 构成：信号接收单元（113）从多个发送器（101）接收多个发送信号。 请求接收单元（115）接收关于发送信号中的一些的重传请求。 发送单元（117）通过网络对与发送请求对应的发送信号进行编码，并将编码信号发送给接收机。

公开(公告)号：KR1020130110587A

公开(公告)日：2013-10-10

申请号：KR1020120032667

申请日：2012-03-29

Applicant: 서울대학교산학협력단

Inventor： 이재홍 ,  이판형

IPC: H04J11/00 ,  H04B7/04

CPC classification number: H04B7/0443 ,  H04J11/004 ,  H04L27/2608 ,  H04L27/2649 ,  H04W72/082

Abstract: PURPOSE: An efficient resource assignment technique in a multi-user multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) system based on minimum mean square error-successive interference cancellation (MMSE-SIC) is provided to improve frequency efficiency and transmission reliability. CONSTITUTION: An effective channel vector is obtained from a subcarrier of user K by using a null space of a selected user group. A data transfer rate is obtained from the subcarrier of the user K by using the effective channel vector. Transmission power of the subcarrier, which is assigned by using a water-filling method, is obtained after assigning the subcarrier.

Abstract translation: 目的：提供基于最小均方误差连续干扰消除（MMSE-SIC）的多用户多输入多输出正交频分复用（MIMO-OFDM）系统中的高效资源分配技术，以提高频率效率 和传输可靠性。 构成：通过使用所选择的用户组的空白空间，从用户K的子载波获得有效的信道向量。 通过使用有效信道向量从用户K的子载波获得数据传送速率。 在分配子载波之后，获得通过使用充水方法分配的副载波的发送功率。

公开(公告)号：KR101081253B1

公开(公告)日：2011-11-08

申请号：KR1020090007374

申请日：2009-01-30

Applicant: 한국전자통신연구원 ,  서울대학교산학협력단

Inventor： 노태균 ,  정병장 ,  안재영 ,  이판형 ,  이재홍

IPC: H04B7/14

Abstract: 다중중계기가존재하는상향링크시스템에서네트워크부호화를사용하는협력통신장치및 방법이개시된다. 다중중계기가존재하는상향링크시스템에서네트워크부호화를사용하는협력통신장치의중계기는다수의송신기들로부터다수의송신신호들을수신하는신호수신부와, 다수의송신신호들을수신한수신기로부터다수의송신신호들가운데일부송신신호들에대한재전송요청들을수신하는요청수신부와, 재전송요청들에해당하는일부송신신호들을네트워크부호화하고, 네트워크부호화된신호를수신기로송신하는송신부를포함한다.