公开(公告)号：KR1020130088561A

公开(公告)日：2013-08-08

申请号：KR1020120009876

申请日：2012-01-31

Applicant: 한국전자통신연구원 ,  전북대학교산학협력단

Inventor： 이인기 ,  오덕길 ,  장매향 ,  김수영

IPC: H04L27/34

CPC classification number: H04L27/345 ,  H04L25/067

Abstract: PURPOSE: A soft decision detecting device for a high order APSK modulation scheme and a method thereof are provided to significantly reduce the complexity of soft decision value calculations. CONSTITUTION: A soft decision detecting device includes an assessment signal converting unit (210), initial soft decision bit calculating unit (220), and channel gain reflecting unit (230). The assessment signal converting unit converts a received complex signal into an assessment signal in which a channel gain is reflected. The initial soft decision bit calculating unit calculates an initial soft decision bit value by checking boundaries corresponding to each predetermined bit and calculating distances between the boundaries and the assessment signal. The channel gain reflecting unit calculates a final soft decision bit value by reflecting the channel gain in the initial soft decision bit value. [Reference numerals] (122) Demodulator; (210) Assessment signal converting unit; (220) Initial soft decision bit calculating unit; (230) Channel gain reflecting unit; (AA) Complex signal; (BB) Final soft decision bits

Abstract translation: 目的：提供一种用于高阶APSK调制方案的软判决检测装置及其方法，以显着降低软判决值计算的复杂度。 构成：软判决检测装置包括评估信号转换单元（210），初始软判决位计算单元（220）和通道增益反映单元（230）。 评估信号转换单元将接收到的复合信号转换为反映信道增益的评估信号。 初始软判决比特计算单元通过检查与每个预定比特相对应的边界并计算边界与评估信号之间的距离来计算初始软判决比特值。 信道增益反映单元通过反映初始软判决比特值中的信道增益来计算最终软判决比特值。 （122）解调器; （210）评估信号转换单元; （220）初始软判决位计算单元; （230）通道增益反射单元; （AA）复信号; （BB）最终软判决位

公开(公告)号：KR1020130085968A

公开(公告)日：2013-07-30

申请号：KR1020130004459

申请日：2013-01-15

Applicant: 한국전자통신연구원

Inventor： 김판수 ,  오덕길

IPC: H04B7/185 ,  H04L27/18

CPC classification number: H04H60/02 ,  H04H20/74

Abstract: PURPOSE: An apparatus and method for transmitting a multiplexing data frame are provided to receive an ultra broadband signal in a DVB-S2 based satellite communication and broadcasting system. CONSTITUTION: A frame generating unit (140) generates one or more super frames including one or more slices. The slices are composed of a plurality of physical layer frame units. A transmitting unit (150) transmits the super frames. The frame generating unit generates a multiplexing super frame by rotating each super frame at a preset phase value. [Reference numerals] (110) Stream connecting unit; (120) Coding unit; (130) Mapping unit; (140) Frame generating unit; (141) Frame slicer; (150) Transmitting unit

Abstract translation: 目的：提供一种用于发送复用数据帧的装置和方法，用于在基于DVB-S2的卫星通信和广播系统中接收超宽带信号。 构成：帧生成单元（140）生成包括一个或多个切片的一个或多个超帧。 切片由多个物理层框架单元组成。 发送单元（150）发送超帧。 帧生成单元通过以预设相位值旋转每个超帧来生成复用超帧。 （附图标记）（110）流连接单元; （120）编码单元; （130）映射单元; （140）帧生成单元; （141）框架切片机; （150）发送单元

公开(公告)号：KR1020130067635A

公开(公告)日：2013-06-25

申请号：KR1020110134394

申请日：2011-12-14

Applicant: 한국전자통신연구원

Inventor： 왕도휘 ,  유준규 ,  오덕길

IPC: H04L1/00 ,  H04L27/00 ,  H04B7/185 ,  H04L27/34

CPC classification number: H04L1/0015 ,  H04B7/185 ,  H04B7/18519 ,  H04L1/0003 ,  H04L27/00 ,  H04L27/02 ,  H04L27/3405

Abstract: PURPOSE: A forward link adaptive transmission device and a method thereof for satellite communication are provided to increase availability of a forward link by determining a modulation and a code rate suitable for channel of each terminal using forward link SNR(Signal to Noise Ratio) information. CONSTITUTION: A transmission device(100) includes a channel estimation unit(110), a control unit(120), a routing unit(130), and a modulation unit(140). The channel estimation unit estimates a channel state by terminal by receiving an SNR from terminals. The control unit confirms predetermined modulation and code rates corresponding to a predetermined section according to the channel state and confirms the modulation and code rate according to the channel state by terminal. The routing unit receives traffic data, confirms a receiving target of the traffic data and classifies the traffic data by the modulation and code rate. The modulation unit modulates the traffic data classified by the predetermined modulation and code rate with a modulation method corresponding to the each modulation and code rate. [Reference numerals] (110) Transmission device; (120) Control unit; (130) Routing unit; (140) Modulation unit; (AA) Traffic data; (BB) FLS information; (CC) End terminal SNR information; (DD) Falsified traffic data

Abstract translation: 目的：提供用于卫星通信的前向链路自适应传输设备及其方法，以通过使用前向链路SNR（信噪比）信息确定适合每个终端的信道的调制和码率来增加前向链路的可用性。 构成：传输装置（100）包括信道估计单元（110），控制单元（120），路由单元（130）和调制单元（140）。 信道估计单元通过从终端接收SNR来估计终端的信道状态。 控制单元根据信道状态确认对应于预定部分的预定调制和码率，并根据终端的信道状态确认调制和码率。 路由单元接收业务数据，确认业务数据的接收目标，并根据调制和码率对业务数据进行分类。 调制单元利用对应于每个调制和码率的调制方法来调制由预定调制和码率分类的业务数据。 （附图标记）（110）传输装置; （120）控制单元; （130）路由单元; （140）调制单元; （AA）交通数据; （BB）FLS信息; （CC）终端SNR信息; （DD）伪造的交通数据

公开(公告)号：KR1020130065929A

公开(公告)日：2013-06-20

申请号：KR1020110132542

申请日：2011-12-12

Applicant: 한국전자통신연구원

Inventor： 유준규 ,  오덕길

IPC: H04H20/51

CPC classification number: H04B1/707 ,  H04B1/69 ,  H04N21/6143

Abstract: PURPOSE: A satellite broadcasting system and a method thereof are provided to improve a bandwidth in rainfall by simultaneously transmitting the signal of a low resolution by using a spectrum diffusion method. CONSTITUTION: A modulation unit (140) modulates a high image quality signal encoded by a first encoding unit (110) and a middle image quality signal encoded by a second encoding unit (120). A spectrum diffusion modulation unit (150) modulates and generates a spectrum diffusion signal from a low image signal encoded by the second encoding unit. A multiplexer (160) combines the modulated spectrum diffusion signal and the modulated high quality and middle quality signal. [Reference numerals] (110) First encoding unit; (120) Second encoding unit; (130) Third encoding unit; (140) Modulation unit; (150) Spectrum diffusion modulation unit; (160) Multiplexer; (170) Up converter; (AA) Broadcasting signal

Abstract translation: 目的：提供一种卫星广播系统及其方法，通过使用频谱扩散方法同时发送低分辨率的信号来提高降雨带宽。 构成：调制单元（140）调制由第一编码单元（110）编码的高图像质量信号和由第二编码单元（120）编码的中间图像质量信号。 频谱扩散调制单元（150）从由第二编码单元编码的低图像信号调制并产生频谱扩散信号。 多路复用器（160）将经调制的频谱扩散信号和调制的高质量和中等质量信号相结合。 （附图标记）（110）第一编码单元; （120）第二编码单元; （130）第三编码单元; （140）调制单元; （150）频谱扩散调制单元; （160）多路复用器 （170）升压转换器; （AA）广播信号

公开(公告)号：KR1020130050718A

公开(公告)日：2013-05-16

申请号：KR1020110115939

申请日：2011-11-08

Applicant: 한국전자통신연구원

Inventor： 박만규 ,  오덕길

IPC: H04B7/185 ,  H04L27/00 ,  H04H20/51

CPC classification number: H04L25/0202 ,  H04B7/18513 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04W24/10

Abstract: PURPOSE: A channel prediction method based on weather data and a device thereof are provided to select an optimal encoding and decoding method by accurately predicting a channel state by using the weather data. CONSTITUTION: A filtering unit(112) extracts channel predicting information from a message including channel measurement information received from a terminal. The filtering unit acquires sample data by processing the channel estimation information. A weather data acquisition unit(113) acquires weather data corresponding to a location where the terminal is located. A channel prediction unit(115) calculates a channel prediction value based on the sample data and the weather data. A determination unit(116) determines an encoding method and a decoding method for processing data based on the channel prediction value. [Reference numerals] (11) Channel prediction device; (111) Message authentication unit; (112) Filtering unit; (113) Weather data acquisition unit; (114) Data storage unit; (115) Channel prediction unit; (116) Determination unit

Abstract translation: 目的：提供一种基于天气数据的信道预测方法及其装置，通过使用天气数据精确地预测信道状态来选择最佳的编码和解码方法。 构成：滤波单元（112）从包括从终端接收的信道测量信息的消息中提取信道预测信息。 滤波单元通过处理信道估计信息来获取采样数据。 天气数据获取单元（113）获取对应于终端所在位置的天气数据。 信道预测单元（115）根据样本数据和天气数据计算信道预测值。 确定单元（116）基于信道预测值确定用于处理数据的编码方法和解码方法。 （11）通道预测装置; （111）消息认证单元; （112）过滤单元; （113）天气数据采集单位; （114）数据存储单元; （115）信道预测单元; （116）确定单位

公开(公告)号：KR1020130033944A

公开(公告)日：2013-04-04

申请号：KR1020120074998

申请日：2012-07-10

Applicant: 한국전자통신연구원

Inventor： 김판수 ,  오덕길

IPC: H04L27/22 ,  H04L27/26 ,  H04L27/34 ,  H04B7/26

CPC classification number: H04L27/22 ,  H04B7/2643 ,  H04H40/90 ,  H04L1/00 ,  H04L25/00 ,  H04L27/00 ,  H04L27/04 ,  H04L27/2692 ,  H04L27/3455

Abstract: PURPOSE: A data transmitting and receiving method resistant to phase noise for high efficiency satellite transmission and an apparatus thereof are provided to simply calculate a phase error and to improve performance degradation caused by phase noise. CONSTITUTION: A data transmitting and receiving device for high efficiency satellite transmission includes an initial phase calculating unit(800), a symbol transition calculating unit(802) and a phase error estimating unit(804). The initial phase calculating unit calculates initial phase information using the preamble and postamble of a received data packet. The symbol transition calculating unit calculates the symbol transition of the received data packet by performing forward and backward metric calculation using the initial phase information and a pilot symbol of the received data packet which is calculated by the initial phase calculating unit. The phase error estimating unit calculates a phase error using the pilot symbol at a pilot symbol positioned spot of the received data packet and provides a calculated phase error to the symbol transition calculating unit. [Reference numerals] (800) Initial phase calculating unit; (802) Symbol transition calculating unit; (804) Phase error estimating unit; (AA) Received data packet;

Abstract translation: 目的：提供一种耐高效率卫星传输的相位噪声的数据发送和接收方法及其装置，以简单地计算相位误差并改善由相位噪声引起的性能下降。 构成：用于高效率卫星传输的数据发送和接收装置包括初始相位计算单元（800），符号转换计算单元（802）和相位误差估计单元（804）。 初始相位计算单元使用接收到的数据分组的前同步码和后同步码来计算初始相位信息。 符号转换计算单元通过使用由初始相位计算单元计算的初始相位信息和接收数据分组的导频符号来执行前向和后向量度计算来计算接收数据分组的符号转换。 相位误差估计单元使用导频符号在接收数据分组的导频符号定位点处计算相位误差，并将计算出的相位误差提供给符号转换计算单元。 （附图标记）（800）初始相位计算单元; （802）符号转换计算单元; （804）相位误差估计单元; （AA）接收数据包;

公开(公告)号：KR1020130023570A

公开(公告)日：2013-03-08

申请号：KR1020110086432

申请日：2011-08-29

Applicant: 한국전자통신연구원

Inventor： 홍현하 ,  오덕길 ,  신민수 ,  박만규

IPC: H04L1/00 ,  H04B7/185 ,  H04L12/56

CPC classification number: H04L1/0083 ,  H04L1/0061

Abstract: PURPOSE: A reverse direction link packet error detecting method in a satellite communication system using packet process data and sequence data is provided to minimize packet loss generated by reassembly errors of a received packet. CONSTITUTION: A central station receives a plurality of reverse direction link packets from a satellite terminal device. The central station generates a first reverse direction link packet by combining received reverse direction packets. The central station determines errors of a packet combination by comparing a second reverse direction link packet with the first reverse direction link packet.

Abstract translation: 目的：提供使用分组处理数据和序列数据的卫星通信系统中的反向链路分组错误检测方法，以最小化由接收分组的重组错误产生的分组丢失。 构成：中心站从卫星终端装置接收多个反向链路分组。 中心站通过组合接收到的反向分组来生成第一反向链路分组。 中心站通过将第二反向链路分组与第一反向链路分组进行比较来确定分组组合的错误。

公开(公告)号：KR1020120070065A

公开(公告)日：2012-06-29

申请号：KR1020100131465

申请日：2010-12-21

Applicant: 한국전자통신연구원

Inventor： 홍현하 ,  오덕길

IPC: H04W36/14 ,  H04W28/04 ,  H04L1/16

CPC classification number: H04W36/24 ,  H04W36/14 ,  H04W60/00 ,  H04W84/06

Abstract: PURPOSE: A method for controlling handover and a method for detecting the loss of packets are provided to shorten times required for detecting mobility by using a return link encapsulation(RLE)-based trigger signal between networks as a handover-start-reference signal. CONSTITUTION: When a mobile router enters in a rainfall reduction section, a foreign agent to a wireless network is searched and registered and handover from a satellite network to a wireless network is executed based on an RLE-based trigger signal and a radio link trigger signal. When the mobile router exits from the rainfall reduction section, handover from the wireless network to the satellite network is executed based on the RLE-based trigger signal and a satellite link trigger signal(230).

Abstract translation: 目的：提供一种用于控制切换的方法和用于检测分组丢失的方法，以通过使用网络之间的基于返回链路封装（RLE）的触发信号来缩短检测移动性所需的时间作为切换起始参考信号。 规定：当移动路由器进入降雨部分时，搜索和注册到无线网络的外部代理，并且基于基于RLE的触发信号和无线电链路触发信号来执行从卫星网络到无线网络的切换 。 当移动路由器从降雨部分退出时，基于基于RLE的触发信号和卫星链路触发信号（230）执行从无线网络到卫星网络的切换。

公开(公告)号：KR1020120048955A

公开(公告)日：2012-05-16

申请号：KR1020100110461

申请日：2010-11-08

Applicant: 한국전자통신연구원

Inventor： 유준규 ,  오덕길 ,  강상기

IPC: H04B1/04 ,  H04L27/20

CPC classification number: H04B1/0483 ,  H03F1/0222 ,  H03F3/24 ,  H03F2200/102

Abstract: PURPOSE: A time delay measuring method of an encoding linearization transmitter is provided to compare a time delay according to a path of a phase signal and an amplitude signal of an input signal in order to measure time delay of an input signal and an output signal of an encoding linearization transmitter. CONSTITUTION: A time delay measurement unit distributes a pulse-modulated sine wave signal into different transmission lines(110). The time delay measurement unit extracts an amplitude modulation signal and a phase modulation signal from the modulated sine wave signal(130). The time delay measurement unit detects an envelope of the amplitude modulation signal.

Abstract translation: 目的：提供一种编码线性化发送器的时间延迟测量方法，用于根据相位信号的路径和输入信号的幅度信号来比较时间延迟，以便测量输入信号的时间延迟和输出信号的输出信号 编码线性化发射机。 构成：时间延迟测量单元将脉冲调制的正弦波信号分配到不同的传输线（110）中。 时间延迟测量单元从调制正弦波信号（130）提取幅度调制信号和相位调制信号。 时间延迟测量单元检测幅度调制信号的包络。

公开(公告)号：KR1020120045195A

公开(公告)日：2012-05-09

申请号：KR1020100106586

申请日：2010-10-29

Applicant: 한국전자통신연구원

Inventor： 유준규 ,  이용민 ,  오덕길

IPC: G01S19/37

Abstract: PURPOSE: An apparatus and a method for processing satellite signals are provided to monitor environment and the occurrence of disasters or calamities by being installed at mountains, rivers, dams, or sea. CONSTITUTION: A signal receiving part(110) receives GPS signals from artificial satellites and generates time of date(TOD) signals or pulse per second(PPS) signals. A signal transmitting part(120) generates signals of pre-set super frame structures based on the TOD signals or the PPS signals. The signals of the pre-set super frame structures are transmitted to a central station. The signal receiving part and the signal transmitting part omit a signal synchronizing process with a central station.

Abstract translation: 目的：提供一种处理卫星信号的装置和方法，通过安装在山区，河流，水坝或海洋来监测环境和灾害或灾害的发生。 构成：信号接收部分（110）从人造卫星接收GPS信号并产生日期时间（TOD）信号或每秒脉冲（PPS）信号。 信号发送部（120）基于TOD信号或PPS信号生成预设超帧结构的信号。 预设超帧结构的信号被发送到中心站。 信号接收部和信号发送部省略与中心站的信号同步处理。