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：KR1020130021972A

公开(公告)日：2013-03-06

申请号：KR1020110084579

申请日：2011-08-24

Applicant: 목포대학교산학협력단

Inventor： 정민아 ,  나영화 ,  송익호 ,  임병수 ,  정지원 ,  박선 ,  이성로

IPC: H04B7/04

CPC classification number: H04B7/0413 ,  H03M13/1102 ,  H03M13/1125

Abstract: PURPOSE: A log-likelihood ratio(LLR) estimation method in a multi-input multi-output(MIMO) channel is provided to separate a soft-decision bit without performance degradation by using a candidate vector. CONSTITUTION: A mapping point is selected as a candidate vector. The mapping point is located within a predetermined range based on I-ch and Q-ch values of receiving signals among mapping points estimated in a receiving end. Log-likelihood computation is performed by using the selected candidate vector. The log-likelihood computation is performed by reflecting the number of transmitting antennas, the number of receiving antennas, and a modulation method for dividing the receiving signals into data of the number of transmitting antennas. [Reference numerals] (AA) Selected four candidate vectors with the same sign as that of a receiving signal; (BB) Receiving signal

Abstract translation: 目的：提供多输入多输出（MIMO）信道中的对数似然比（LLR）估计方法，以通过使用候选向量来分离软判决比特而不降低性能。 构成：选择一个映射点作为候选向量。 基于在接收端估计的映射点之间的接收信号的I-ch和Q-ch值，映射点位于预定范围内。 通过使用选择的候选向量来执行对数似然计算。 通过将发送天线的数量，接收天线的数量和用于将接收信号分割为发送天线数的数据的调制方法进行对数似然计算。 （附图标记）（AA）选择与接收信号具有相同符号的四个候选向量; （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：KR1020130000011A

公开(公告)日：2013-01-02

申请号：KR1020110058496

申请日：2011-06-16

Applicant: 목포대학교산학협력단

Inventor： 김기만 ,  정지원 ,  이성로 ,  모귀환 ,  노신래 ,  박인수 ,  박종환

IPC: H04L27/18 ,  H04L27/30 ,  H04W84/18 ,  H04B13/00

CPC classification number: Y02D70/00 ,  H04L27/2003 ,  H04L27/30

Abstract: PURPOSE: A modulation method for low power communication in an underwater sensor network and a transmitting device using the same are provided to transmit a PSK signal to only a half of a symbol signal and process the other half as a silence section. CONSTITUTION: An underwater sensor network modulates a PSK signal into two of orthogonal symbols to transmit the modulated symbols. A method for low power communication in the underwater sensor network includes a stage for forming two of half cycle signals by using first bit information and a stage for transmitting the PSK signal of a (log)-1 bit. A silence section is determined by using the first bit. A transmitting signal is transmitted as a signal including position information about the modulated signal and symbol. The band efficiency of PSSK(Phase Silence Shift Keying) is a half of PSK. A receiver structure of the PSSK uses a synchronized system.

Abstract translation: 目的：提供一种用于水下传感器网络中的低功率通信的调制方法和使用该调制方法的发送装置，用于将PSK信号仅传送到符号信号的一半，并将另一半作为静音部分处理。 构成：水下传感器网络将PSK信号调制成两个正交符号以发送调制符号。 水下传感器网络中的低功率通信方法包括：通过使用第一比特信息形成两个半周期信号的阶段，以及用于发送（log）-1比特的PSK信号的阶段。 通过使用第一位来确定静音段。 作为包含关于调制信号和符号的位置信息的信号发送发送信号。 PSSK（相位静音键控）的频带效率是PSK的一半。 PSSK的接收机结构使用同步系统。

公开(公告)号：KR1020120139000A

公开(公告)日：2012-12-27

申请号：KR1020110058497

申请日：2011-06-16

Applicant: 목포대학교산학협력단

Inventor： 김기만 ,  정지원 ,  최명수 ,  박선 ,  이성호 ,  이성로

IPC: H04B1/711 ,  H04B11/00 ,  H04L27/18

CPC classification number: H04B1/711 ,  H04B11/00 ,  H04L27/18 ,  H04L27/2647

Abstract: PURPOSE: An underwater sound communication method using a DSSS(direct-sequence spread-spectrum) method is provided to reduce interference between symbols generated in multiple channels in wireless communication by using the DSSS method. CONSTITUTION: A transmission unit spreads the band of a data signal according to a DSSS method. The transmission unit spreads the band of the data signal by multiplying a signal modulated by a QPSK(Quadrature Phase Shift Keying) method by a PN(pseudo noise) code generated from a PN code generator. The transmission unit transmits band spread data information to a reception unit. The reception unit reversely spreads a signal received from the transmission unit through a channel environment by multiplying the signal by the PN code. The reception unit converts the received signal into an original signal through a reverse spread method. [Reference numerals] (a) Transmission unit; (b) Reception unit

Abstract translation: 目的：提供一种使用DSSS（直接序列扩频）方法的水下声音通信方法，通过DSSS方法减少无线通信中多个信道产生的符号间的干扰。 构成：传输单元根据DSSS方法扩展数据信号的频带。 发送单元通过将由QPSK（正交相移键控）调制的信号乘以由PN码发生器产生的PN（伪噪声）码来扩展数据信号的频带。 发送单元向接收单元发送频带扩展数据信息。 接收单元通过将信号乘以PN码，通过信道环境反向扩展从发送单元接收的信号。 接收单元通过反向扩展方法将接收到的信号转换为原始信号。 （附图标记）（a）传输单元; （b）接待单位

公开(公告)号：KR1020140055015A

公开(公告)日：2014-05-09

申请号：KR1020120121225

申请日：2012-10-30

Applicant: 목포대학교산학협력단

Inventor： 이성로 ,  이연우 ,  양후열 ,  박선 ,  정지원 ,  박인수 ,  김정희

IPC: H03M13/11

CPC classification number: H03M13/1165 ,  H03M13/1111 ,  H03M13/6502

Abstract: The present invention relates to an efficient method of calculating a coax network unit (CNU) for decoding a high-speed low density parity check (LDPC) based on a Digital Video Broadcasting-Satellite 2 (DVB-S2). According to the present invention, the efficient method of calculating the CNU for decoding the high-speed LDPC is configured to calculate the optimal CNU for high-speed decoding with a SC-NMS method to which a self-corrected method to an NMS (the efficient method of calculating the CNU for operating high-speed to obliterate a critical path and to reduce a clock cycle) assigning zero to a current edge through regarding no reliability if a code is changed by comparing values of the edge in the previous iteration with the value of the edge in the current iteration during decoding repetition.

Abstract translation: 本发明涉及一种计算基于数字视频广播卫星2（DVB-S2）的高速低密度奇偶校验（LDPC）解码的同轴电缆网络单元（CNU）的有效方法。 根据本发明，计算用于解码高速LDPC的CNU的有效方法被配置为使用对NMS进行自校正方法的SC-NMS方法来计算用于高速解码的最佳CNU（ 计算CNU以高效运行以消除关键路径并减少时钟周期的高效方法）通过将代码通过将先前迭代中的边缘值与 解码重复期间当前迭代中边缘的值。

公开(公告)号：KR1020140041128A

公开(公告)日：2014-04-04

申请号：KR1020120108131

申请日：2012-09-27

Applicant: 목포대학교산학협력단

Inventor： 이성로 ,  민상원 ,  윤승훈 ,  하상혁 ,  이정훈 ,  김윤희 ,  정지원 ,  양후열 ,  문병대

IPC: H04W36/34 ,  H04W36/02

CPC classification number: H04W36/34 ,  H04W36/02 ,  H04W80/04

Abstract: Disclosed is a high-speed multicast traffic handover method in the PMIPv6. The method provides a multicast LMA and a handover scheme to efficiently support multicasting in the PMIPv6. The method solves the tunneling superposition phenomenon by adding a multicast LMA responsible for managing the multicast traffic. Also, the method provides a way to add a multicast LMAA in an MN-profile to distinguish a general LMA responsible for unicast traffic of a MN in MAG.

Abstract translation: 公开了一种PMIPv6中的高速多播流量切换方法。 该方法提供组播LMA和切换方案，以有效地支持PMIPv6中的多播。 该方法通过添加负责管理组播流量的组播LMA来解决隧道叠加现象。 此外，该方法提供了一种在MN简档中添加多播LMAA以区分负责MAG中的MN的单播业务的一般LMA的方法。

公开(公告)号：KR1020130043963A

公开(公告)日：2013-05-02

申请号：KR1020110108176

申请日：2011-10-21

Applicant: 목포대학교산학협력단

Inventor： 정민아 ,  정지원 ,  이성로 ,  이연우 ,  양후열 ,  김진우 ,  박민수 ,  모귀환 ,  박인수

IPC: H03M13/29 ,  H03M13/15

CPC classification number: H03M13/2963 ,  H03M13/152 ,  H03M13/2771 ,  H03M13/616 ,  H03M13/6502 ,  H03M13/6522

Abstract: PURPOSE: A reduced TPC algorithm method for a next generation DVB-RCS system is provided to improve an encoding rate, to reduce an amount of calculation and to decrease calculation time. CONSTITUTION: An e-BCH is applied in a horizontal encoding method. An e-BCH is applied in a vertical encoding method. 0 is inserted into a horizontal and vertical encoder and a rate compatible encoding rate is controlled.

Abstract translation: 目的：提供下一代DVB-RCS系统的降低TPC算法方法，以提高编码率，减少计算量，减少计算时间。 构成：以水平编码方式应用e-BCH。 以垂直编码方式应用e-BCH。 0被插入到水平和垂直编码器中，并且控制速率兼容的编码速率。

公开(公告)号：KR1020130043959A

公开(公告)日：2013-05-02

申请号：KR1020110108172

申请日：2011-10-21

Applicant: 목포대학교산학협력단

Inventor： 이연우 ,  이성로 ,  장준혁 ,  정민아 ,  정지원 ,  윤석호 ,  조지우 ,  양후열 ,  모귀환 ,  박인수

IPC: H04J11/00

CPC classification number: H04W72/08 ,  H04J11/00

Abstract: PURPOSE: A data communication method between ship and land by utilizing an OFDMA sub-channel is provided to overcome a limited frequency resource in the environment where the number of ships increases and to efficiently avoid collision of important data of ships. CONSTITUTION: If a navigation identifier receives a plurality of maritime communication data carried in an OFDMA sub-channel of a plurality of group As, the navigation identifier confirms the existence of a repeatedly used OFDMA sub-channel in the OFDMA sub-channels of a plurality of the group As. If there is an OFDMA sub-channel with collision, the navigation identifier modulates maritime communication data carried in the collided OFDMA sub-channel with an OFDMA sub-channel in a group B and transmits the data to a land integration base station. [Reference numerals] (AA) OFDMA sub-channel; (BB) Sub-channel group A; (CC) Sub-channel group B; (DD) OFDMA sub-channel selector

Abstract translation: 目的：提供利用OFDMA子信道的船舶与陆地之间的数据通信方式，以克服船舶数量增加的环境中有限的频率资源，有效避免船舶重要数据的碰撞。 规定：如果导航标识符接收到多个组As的OFDMA子信道中携带的多个海事通信数据，则导航标识符确认在多个OFDMA子信道中存在重复使用的OFDMA子信道 的组As。 如果存在具有冲突的OFDMA子信道，则导航标识符利用组B中的OFDMA子信道来调制在冲突的OFDMA子信道中携带的海上通信数据，并将该数据发送到陆地集成基站。 （标号）（AA）OFDMA子信道; （BB）子信道组A; （CC）子信道组B; （DD）OFDMA子信道选择器

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