公开(公告)号：KR1020140050188A

公开(公告)日：2014-04-29

申请号：KR1020120115996

申请日：2012-10-18

Applicant: 목포대학교산학협력단

Inventor： 이성로 ,  이연우 ,  박선 ,  박태두 ,  김민혁 ,  김철승 ,  정지원 ,  기종출 ,  모귀환

IPC: H04L27/26

CPC classification number: H04L1/0618 ,  H04L1/0071

Abstract: The present invention relates to a device for coding space time trellis of an efficient hierarchical structure for an MIMO system. According to one embodiment of the present invention, the device for coding space time trellis of an efficient hierarchical structure for an MIMO system includes a turbo PI coder; an inteleaver; and a time-space lattice coder. According to one embodiment of the present invention, the turbo PI coder channel-codes data bits. The interleaver distributes the error of the channel-coded data bits. [Reference numerals] (a) Transmitter; (b) Receiver

Abstract translation: 本发明涉及一种用于MIMO系统的有效等级结构的时空网格编码装置。 根据本发明的一个实施例，用于编码MIMO系统的有效分层结构的时空网格的装置包括turbo PI编码器; 一个整数; 和时空格子编码器。 根据本发明的一个实施例，turbo PI编码器对数据位进行信道编码。 交织器分配通道编码数据位的错误。 （附图标记）（a）发射机; （b）接收人

公开(公告)号：KR1020140050187A

公开(公告)日：2014-04-29

申请号：KR1020120115994

申请日：2012-10-18

Applicant: 목포대학교산학협력단

Inventor： 정지원 ,  박태두 ,  김민혁 ,  김연옥 ,  전성민 ,  박종환 ,  이연우 ,  양후열 ,  이성로

IPC: H04L1/18 ,  H03M13/00

CPC classification number: H03M13/1151 ,  H03M13/6522 ,  H04L1/1896

Abstract: The present invention comprises the steps of a base station transmitting data which has undergone Reed-Solomon coding to a relay station and a destination station; and the relay station transmitting the data received from the base station, to the destination station with a cross-layer coding scheme by using LDPC coding. According to the present invention, the method can improve transmission efficiency and reliability compared to performing communication using a general MIMO system.

Abstract translation: 本发明包括以下步骤：基站向中继站和目的站发送已经经历Reed-Solomon编码的数据; 并且中继站通过使用LDPC编码将从基站接收的数据发送到具有跨层编码方案的目的站。 根据本发明，与使用通用MIMO系统进行通信相比，该方法可以提高传输效率和可靠性。

公开(公告)号：KR1020140049774A

公开(公告)日：2014-04-28

申请号：KR1020120115995

申请日：2012-10-18

Applicant: 목포대학교산학협력단

Inventor： 이성로 ,  이연우 ,  양후열 ,  맹세영 ,  박태두 ,  김민혁 ,  김철승 ,  정지원

IPC: H04L27/26 ,  H04L1/00

CPC classification number: H04L25/0204 ,  H04L1/203

Abstract: The present invention relates to a method of estimating a log-likelihood ratio (LLR) in an MIMO channel of an MIMO system to reduce the amount of computation according to log-likelihood calculation dividing received signals into N bits, wherein the signals are coupled to data as much as the number of N transmit antennas. The method estimates LLR by the log-likelihood calculation using a mapping point close to the received signal as a candidate vector. [Reference numerals] (AA) Three candidate vectors selected in -1.3竊�j.t竊�.3; (BB) Received signal

Abstract translation: 本发明涉及一种在MIMO系统的MIMO信道中估计对数似然比（LLR）的方法，用于根据将接收信号分解为N比特的对数似然计算来减少计算量，其中信号耦合到 数据与N个发射天线的数量一样多。 该方法使用接近接收信号的映射点作为候选向量，通过对数似然计算估计LLR。 （附图标记）（AA）在-1.3 j.t .3中选择的三个候选向量; （BB）接收信号

公开(公告)号：KR1020130006914A

公开(公告)日：2013-01-18

申请号：KR1020110062264

申请日：2011-06-27

Applicant: 목포대학교산학협력단

Inventor： 정지원 ,  박태두 ,  이성로 ,  모귀환 ,  박인수 ,  박종환

IPC: H04B17/00 ,  H04B11/00 ,  H03M13/11 ,  H04B7/04

CPC classification number: H04B17/0082 ,  H03M13/11 ,  H04B13/02 ,  H04L1/0618 ,  H04L25/0204

Abstract: PURPOSE: An underwater communication channel performance analyzing method in a MISO(Multiple Input Single Output) channel using an LDPC(Low Density Parity Check) symbol is provided to increase the performance of BER(Bit Error Rate) by using an LEDPC. CONSTITUTION: In case of applying an MISO communication channel, it is determined whether the other symbol is transmitted. An analysis result is supplied as analyzing performance of an MISO communication channel and an SISO(Single Input Single Output) communication channel in underwater communication environment.

Abstract translation: 目的：提供使用LDPC（低密度奇偶校验）符号的MISO（多输入单输出）信道中的水下通信信道性能分析方法，以通过使用LEDPC来提高BER（误码率）的性能。 构成：在应用MISO通信信道的情况下，确定是否发送了其他符号。 分析结果作为水下通信环境中MISO通信信道和SISO（单输入单输出）通信信道的性能分析提供。

公开(公告)号：KR1020130022796A

公开(公告)日：2013-03-07

申请号：KR1020110085710

申请日：2011-08-26

Applicant: 목포대학교산학협력단

Inventor： 정지원 ,  박태두 ,  박희만 ,  송익호 ,  정민아 ,  박선 ,  이성로

IPC: H04L1/18 ,  H04B7/02 ,  H04B7/14

CPC classification number: H04L1/1812 ,  H04L1/06

Abstract: PURPOSE: A method is provided to remarkably improve communication performance in a poor wireless channel environment by resolving size and cost of a MIMO system. CONSTITUTION: A method selects a hybrid-ARQ type using a cross-layer coding technique based on importance of a channel environment, BER and throughput when transmitting data in collaboration with a base station(BS), a relay station(RS) and a destination station(DS). At this time, the method includes a stage of judging availability of the channel environment based on effect of Rayleigh fading independently varying with a symbol period and path loss according to a distance.

Abstract translation: 目的：提供一种通过解决MIMO系统的尺寸和成本，在恶劣的无线信道环境中显着提高通信性能的方法。 构成：当与基站（BS），中继站（RS）和目的地（RS）协作发送数据时，一种方法使用基于信道环境的重要性，BER和吞吐量的跨层编码技术来选择混合ARQ类型 站（DS）。 此时，该方法包括基于根据距离独立地随符号周期和路径损耗而变化的瑞利衰落的影响来判断信道环境的可用性的阶段。

公开(公告)号：KR1020120048363A

公开(公告)日：2012-05-15

申请号：KR1020100109962

申请日：2010-11-05

Applicant: 목포대학교산학협력단

Inventor： 정지원 ,  김민혁 ,  박태두 ,  김남수 ,  이성로

IPC: H04N19/89 ,  H04N7/015

CPC classification number: H03M13/1125 ,  H03M13/1165

Abstract: PURPOSE: A decoding method using a likelihood ratio is provided to selectively delete a symbol with a high error probability according to an LLR(Log Likelihood Ratio) instead of deleting the whole Internet protocol packet. CONSTITUTION: An IP(Internet Protocol) packet receives a LDPC(Low-Density Parity-Check) encoded signal. The encoded LDPC signal is decoded by the LDPC code. A symbol unit deletion in the IP packet is determined by an outputted LLR. An IP packet deleted by the symbol unit is stored in a memory. An error correction decoding is performed.

Abstract translation: 目的：提供使用似然比的解码方法，以根据LLR（对数似然比）来选择性地删除具有高错误概率的符号，而不是删除整个因特网协议分组。 构成：IP（因特网协议）分组接收LDPC（低密度奇偶校验）编码信号。 编码的LDPC信号由LDPC码解码。 IP分组中的符号单元删除由输出的LLR确定。 由符号单元删除的IP包被存储在存储器中。 执行纠错解码。