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公开(公告)号：KR102039062B1
公开(公告)日：2019-10-31
申请号：KR1020130015783
申请日：2013-02-14
Applicant: 한국전자통신연구원
IPC: H04L12/721
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公开(公告)号：KR101730214B1
公开(公告)日：2017-04-25
申请号：KR1020130018363
申请日：2013-02-21
Applicant: 한국전자통신연구원
Abstract: 본발명은낮은신호대잡음비의환경에서동작가능한 DVB-S2 표준기반의송수신장치및 방법에관한것으로서, DVB-S2 표준기반의송신기, 응용되는영역및 전송채널의상태중에서적어도하나에기초하에비트매핑을결정하는맵핑(Mapping)부, 및확산인자만큼상기물리계층헤더가삽입된물리계층프레임을반복하는물리계층프레임반복처리부를포함할수 있다.
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公开(公告)号：KR1020150097048A
公开(公告)日：2015-08-26
申请号：KR1020140018121
申请日：2014-02-17
Applicant: 한국전자통신연구원
CPC classification number: H04L25/03 , H04L1/005 , H04L1/0057 , H04L1/0071 , H04L25/03318
Abstract: 본 발명은 FTN 기반 신호 수신 장치 및 그의 신호 복호화 방법에 관한 것으로, 본 발명에 따른 장치는, FTN(Fast to Nyquist)으로 샘플링된 신호가 통신 채널 상에서 수신된 경우, BCJR 알고리즘을 통해 상기 수신 신호에 대한 정보 비트의 사후 확률을 산출하고, 산출된 사후 확률을 이용하여 로그 우도비를 산출하는 등화기, 상기 등화기로부터 출력된 비트 데이터를 디인터리빙하는 디인터리버, 상기 로드 우도비를 이용하여 상기 디인터리버에 의해 디인터리빙된 데이터비트의 신호 간섭을 보상하여 복호화하는 복호기, 및 상기 복호기로부터 출력된 데이터를 인터리빙하여 상기 등화기로 제공하는 인터리버를 포함한다.
Abstract translation: 本发明涉及基于FTN的信号接收装置及其信号解码方法。 该装置包括：均衡器，当在通信信道上接收到通过快速到尼奎斯特（FTN）采样的信号时，通过BCJR算法使用相对于接收信号的信息比特的后验概率来计算对数似然比，并且通过使用 计算后验概率; 去交错从均衡器输出的位数据的解交织器; 解码器，通过使用对数似然比来补偿由解交织器去交织的比特数据的信号干扰来对数据比特进行解码; 以及交织器，其对从解码器输出的数据进行交织并将结果提供给均衡器。
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公开(公告)号：KR1020140041071A
公开(公告)日：2014-04-04
申请号：KR1020120107982
申请日：2012-09-27
Applicant: 한국전자통신연구원
IPC: H03M13/11
CPC classification number: H03M13/13 , H03M13/1165 , H03M13/611 , H03M13/6561
Abstract: Provided is an apparatus and method for low-density parity-check (LDPC) encoding, which store M registers each including N bits, obtain N×M parity bits by performing a partial parallel operation an N×M number of times with respect to the M registers, and mutually invert subsequent N parity bits periodically, based on previous parity bits for each N^th parity bit of the N×M parity bits, respectively. [Reference numerals] (110) Storage unit; (120) Calculation unit; (130) Reversal unit
Abstract translation: 提供了一种用于低密度奇偶校验（LDPC）编码的装置和方法，其存储每个包括N个比特的M个寄存器，通过执行部分并行操作获得N×M个奇偶校验位，相对于 M寄存器，并且分别基于N×M个奇偶校验位的每个第N个奇偶校验位的先前奇偶校验位周期性地相互反转后续的N个奇偶校验位。 （附图标记）（110）存储单元; （120）计算单位; （130）反转单元
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公开(公告)号：KR1020140025664A
公开(公告)日：2014-03-05
申请号：KR1020120091558
申请日：2012-08-22
Applicant: 한국전자통신연구원
CPC classification number: H04B7/18519 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L27/00 , H04B7/185 , H04L27/02 , H04L27/3405
Abstract: The present invention relates to a method and an adaptive coding modulation apparatus for a forward link for satellite communication. According to an embodiment, the adaptive coding modulation apparatus comprises: a receiving unit for receiving a ratio of signal to noise of a received signal; a decision unit for determining whether the ratio thereof is less than or equal to a threshold; and a process unit for operating a channel prediction algorithm if the ratio thereof is less than or equal to the threshold as a result of the determination. [Reference numerals] (300) Adaptive coding modulation apparatus; (310) Receiving unit; (320) Decision unit; (330) Process unit
Abstract translation: 本发明涉及用于卫星通信的前向链路的方法和自适应编码调制装置。 根据实施例，自适应编码调制装置包括：接收单元，用于接收接收信号的信噪比; 用于确定其比例是否小于或等于阈值的判定单元; 以及处理单元，用于如果其比例小于或等于作为确定的结果的阈值，则操作信道预测算法。 （300）自适应编码调制装置; （310）接收单元; （320）决策单位; （330）处理单元
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Patent Agency Ranking
公开(公告)号：KR1020130088562A
公开(公告)日：2013-08-08
申请号：KR1020120009877
申请日：2012-01-31
Applicant: 한국전자통신연구원
IPC: H04L27/18 , H04B1/69 , H04L1/00 , H04N21/2383 , H04N21/438 , H04L1/08
CPC classification number: H04B1/7097 , H04L1/0079 , H04L1/08 , H04N21/2383 , H04N21/4382 , H04L27/18 , H04B1/69
Abstract: PURPOSE: A modulation and demodulation method for satellite communications having a wide range of SNR is provided to transmit data in satellite communications and broadcasting systems based on DVB-S2 at various SNR levels without any effects on conventional terminals based on DVB-S2. CONSTITUTION: A dummy frame is added to a broadcasting/communication signal frame to transmit signals of a DVB-S2 modulator (301). A spreading factor is identified (302). An identical physical layer header is repeated as many as the corresponding number of the spreading factor, and added to the broadcasting/communication signal frame to which the dummy framed is added (303). [Reference numerals] (301) Dummy frame is added to a broadcasting/communication signal frame; (302) Spreading factor is identified; (303) Identical physical layer header is added by being repeated as many as the corresponding number of the spreading factor; (AA) Start; (BB) End
Abstract translation: 目的：提供具有宽范围SNR的卫星通信调制和解调方法，以在各种SNR级别的DVB-S2卫星通信和广播系统中传输数据，而不会对基于DVB-S2的传统终端产生任何影响。 构成：将一个虚拟帧添加到广播/通信信号帧以发送DVB-S2调制器（301）的信号。 确定扩散因子（302）。 相同的物理层报头被重复与扩展因子的相应数量一样多，并且被添加到添加了虚拟框架的广播/通信信号帧（303）。 （附图标记）（301）将广播/通信信号帧中添加虚拟帧; （302）识别扩散因子; （303）通过重复与扩展因子的相应数量一样多的相加物理层报头; （AA）开始; （BB）结束
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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
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
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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
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
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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
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
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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
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
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