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公开(公告)号：KR101114681B1
公开(公告)日：2012-03-05
申请号：KR1020100107243
申请日：2010-10-29
Applicant: 세종대학교산학협력단
Abstract: PURPOSE: An MISO(Multiple-Input Single-Output)-OFDM(Orthogonal Frequency Division Multiplexing) communication system and a feedback method thereof are provided to transmit feedback information which is compressed by changing a phase compensation condition by a channel estimation state. CONSTITUTION: The phase difference between a first channel and a second channel, which are obtained through a transmission signal transmitted from a first transmitting end and a second transmitting end, are calculated in an operation unit(S310). An estimating unit calculates the states of the first channel and the second channel according to the calculated phase difference(S320). A generating unit generates feedback information by changing a phase compensation condition according to an estimated state(S330). The feedback information generated is compressed in a compression unit(S340). The compressed feedback information is transmitted to a transmitting end through a transmission unit(S350). A receiving end receives a transmission signal, which is corrected in phase with the feedback information, from transmitting ends(S360).
Abstract translation: 目的：提供MISO（多输入单输出）-OFDM（正交频分复用）通信系统及其反馈方法，以通过信道估计状态改变相位补偿条件来发送被压缩的反馈信息。 构成：通过从第一发送端和第二发送端发送的发送信号获得的第一信道和第二信道之间的相位差在运算单元中计算（S310）。 估计单元根据计算出的相位差计算第一通道和第二通道的状态（S320）。 生成单元根据估计状态改变相位补偿条件来生成反馈信息（S330）。 生成的反馈信息在压缩单元中被压缩（S340）。 压缩的反馈信息通过发送单元发送到发送端（S350）。 接收端从发送端接收与反馈信息同相校正的发送信号（S360）。
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公开(公告)号：KR101072653B1
公开(公告)日：2011-10-11
申请号：KR1020090082138
申请日：2009-09-01
Applicant: 세종대학교산학협력단
CPC classification number: Y02D70/00
Abstract: 개시된협력통신에서의계층변조를사용한처리율향상방법및 시스템에따르면, 수신된신호를 CRC 검사결과에대응하여적응적으로변조하여전송함에따라듀얼홉 환경의협력통신에서단일안테나를사용하는단말기의처리율을향상시킴과동시에안정적인비트에러율을유지할수 있는이점이있다.
Abstract translation: 目的：提供一种用于提高使用分层调制的协同通信吞吐量的方法及其系统，以保持稳定的比特错误率。 构成：分类为多层的数据从发送器每层接收调制信号。 中继器（120）解调所接收的信号。 中继器执行CRC（循环冗余校验）。 中继器对接收的终端进行调制，以应对CRC结果。 中继器将调制接收信号发送到接收机。
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公开(公告)号：KR1020110024230A
公开(公告)日：2011-03-09
申请号：KR1020090082138
申请日：2009-09-01
Applicant: 세종대학교산학협력단
CPC classification number: Y02D70/00 , H04L27/3405 , H04B7/026 , H04B7/15592 , H04L1/004 , H04L1/02
Abstract: PURPOSE: A method for improving the throughput of cooperative communication using hierarchical modulation and a system thereof are provided to maintain a stable bit error rate. CONSTITUTION: A data classified into a plurality of layers receives modulated signal per layers from a transmitter. A repeater(120) demodulates the received signal. The repeater performs CRC(Cyclic Redundancy Check). The repeater modulates the received terminal coping with the CRC result. The repeater transmits the modulated received signal to the receiver.
Abstract translation: 目的：提供一种用于提高使用分层调制的协同通信吞吐量的方法及其系统，以保持稳定的比特错误率。 构成：分类为多层的数据从发送器每层接收调制信号。 中继器（120）解调所接收的信号。 中继器执行CRC（循环冗余校验）。 中继器对接收的终端进行调制，以应对CRC结果。 中继器将调制接收信号发送到接收机。
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