-
公开(公告)号：KR1020050038122A
公开(公告)日：2005-04-27
申请号：KR1020030073341
申请日：2003-10-21
Applicant: 한국전자통신연구원
IPC: H04B7/04
CPC classification number: H04L25/03057 , H04B7/04 , H04L2025/03611
Abstract: 본 발명은 다중입력 다중출력에서의 적응 수신 시스템 및 그 방법에 관한 것이다.
다중입력 다중출력에서의 적응 수신 시스템 및 그 방법은, 송신 안테나의 수만큼 병렬로 구성되어 있는 등화기마다 심벌을 추정할 때의 최소 자승 오차의 가중치 합이 최소가 되는 심벌을 추정하도록 심벌 검파 순서를 결정하고, 이 검파 순서에 맞추어 RLS 알고리즘에 기반한 필터 탭 계수를 갱신하도록 하는 것이다.
이와 같이 하면, 시간적으로 변하는 채널 환경 하에서도 채널 추적 과정 없이 필터 탭 계수를 직접 갱신하고, 그로 인해 채널 추적과 기존의 V-BLAST 방식에 비해 복잡도가 감소하면서도 거의 동일한 검파 성능을 나타낼 수 있다.-
82.发明公开
公开(公告)号：KR1020040058440A
公开(公告)日：2004-07-05
申请号：KR1020020084478
申请日：2002-12-26
Applicant: 한국전자통신연구원
IPC: H04B7/06
CPC classification number: H04B7/0891 , H04B7/0417 , H04B7/0626 , H04B7/0697 , H04L1/0003 , H04L1/0656 , H04L5/0007 , H04L5/0023 , H04L5/0028 , H04L5/0046 , H04L5/006 , H04W52/42
Abstract: PURPOSE: An adaptive modulation/demodulation device applied to an MIMO(Multi-Input Multi-Output) system having a layered space-time architecture detector and a method thereof are provided to determine an equivalent channel gain, and to determine the number of bits and transmission power to be transmitted through each antenna by using the equivalent channel gain, thereby improving system performance. CONSTITUTION: A bit and power assign information calculator(54) determines an equivalent channel gain in reverse order of a V-BLAST(Vertical-Bell Laboratories Space Time) system based on MIMO channel information fed back from a receiving end, and determines the number of bits and transmission power to be transmitted to each transmission antenna(53A-53M) by using the determined equivalent channel gain. A layered space-time architecture-based adaptive modulator(52) performs a modulation process in different methods by each antenna(53A-53M) with the use of the determined bits and the power assign information, controls the transmission power, and transmits an adaptively modulated signal through each transmission antenna(53A-53M).
Abstract translation: 目的：提供一种应用于具有分层时空架构检测器及其方法的MIMO（多输入多输出）系统的自适应调制/解调装置，用于确定等效信道增益，并确定位数和 通过使用等效信道增益来传输通过每个天线的发射功率，从而提高系统性能。 构成：基于从接收端反馈的MIMO信道信息，位和功率分配信息计算器（54）以V-BLAST（Vertical-Bell Laboratories Space Time）系统的相反顺序确定等效信道增益， 的比特和发送功率，通过使用确定的等效信道增益发送到每个发送天线（53A-53M）。 基于分层时空架构的自适应调制器（52）通过使用确定的比特和功率分配信息，通过每个天线（53A-53M）以不同的方法执行调制处理，控制发送功率，并自适应地发送 通过每个发射天线（53A-53M）调制信号。
-
83.发明公开
公开(公告)号：KR1020040035505A
公开(公告)日：2004-04-29
申请号：KR1020020064674
申请日：2002-10-22
IPC: H04B7/04
CPC classification number: H04B7/0413 , H04B7/0613 , H04B7/0851 , H04B7/0854
Abstract: PURPOSE: A transmission system for obtaining a more good diversity gain in a DS/CDMA(Direct Sequence/Code Division Multiple Access) MIMO(Multiple-Input Multiple-Output) antenna system is provided to spread transmission data by inter-different spreading codes and differently use scrambling codes per transmission antenna. CONSTITUTION: A transmission terminal has a serial/parallel converting unit(11), a data spreading unit(12), a combining unit(13), a scrambling process unit(14) and a plurality of transmission antennas(15). The transmission terminal receives original data to be transmitted, and converts the received original data into a plurality of parallel data The transmission terminal spreads the parallel data by spreading codes, scrambles the parallel data by scrambling codes, and transmits the data through a plurality of the transmission antennas(15). A reception terminal has a plurality of reception antennas(16) and a receiver(17). The reception terminal despreads data received through a plurality of the reception antennas(16), and recovers the original data.
Abstract translation: 目的：提供一种用于在DS / CDMA（直接序列/码分多址）MIMO（多输入多输出）天线系统中获得更好的分集增益的传输系统，用于通过不同的扩频码扩展传输数据， 每个发射天线不同地使用扰码。 构成：发送终端具有串行/并行转换单元（11），数据扩展单元（12），组合单元（13），加扰处理单元（14）和多个发送天线（15）。 发送终端接收要发送的原始数据，并将接收到的原始数据转换为多个并行数据。发送终端通过扩频码扩展并行数据，通过扰码对该并行数据进行加扰，并通过多个 发射天线（15）。 接收终端具有多个接收天线（16）和接收机（17）。 接收终端对通过多个接收天线（16）接收的数据进行解扩，并恢复原始数据。
-
公开(公告)号：KR100428265B1
公开(公告)日：2004-04-28
申请号：KR1020010060079
申请日：2001-09-27
Applicant: 한국전자통신연구원
IPC: H04N7/12
Abstract: PURPOSE: An apparatus and a method for controlling reception of multi-data using a single port and a multi-data transmission system are provided to receive both of transmission signals in two modes using only one port. CONSTITUTION: An apparatus for controlling reception of multi-data using a single port includes the first and second standard signal receivers(20,30), a switch(10), and a controller(40). The first standard signal receiver processes an input signal according to the first broadcasting standard. The second standard signal receiver processes an input signal according to the second broadcasting standard different from the first broadcasting standard. The switch selects one of the first and second standard signal receivers to transmit a signal inputted through the single port. The controller receives the signals processed by the first and second standard signal receivers and judges the broadcasting standards of the signals to generate control signals according to the judged broadcasting standards and outputs the control signals to the switch.
Abstract translation: 目的：提供一种使用单端口和多数据传输系统来控制接收多数据的设备和方法，以仅使用一个端口以两种模式接收两种传输信号。 用于控制使用单端口接收多数据的设备包括第一和第二标准信号接收器（20,30），开关（10）和控制器（40）。 第一标准信号接收器根据第一广播标准处理输入信号。 第二标准信号接收器根据与第一广播标准不同的第二广播标准处理输入信号。 开关选择第一和第二标准信号接收器中的一个来发送通过单个端口输入的信号。 控制器接收第一和第二标准信号接收器处理的信号，并根据所判断的广播标准判断信号的广播标准以产生控制信号，并将控制信号输出到开关。
-
公开(公告)号：KR1020040021188A
公开(公告)日：2004-03-10
申请号：KR1020020052764
申请日：2002-09-03
IPC: H04B1/711
CPC classification number: H04B1/71055 , H04B1/7115 , H04B7/04 , H04B7/0854 , H04L2025/03605
Abstract: PURPOSE: An adaptive interference mitigating receiver for a DS/CDMA communication system using space-time block coding is provided for a quality service at a high speed by improving data detection performance in a multi-path fading channel environment. CONSTITUTION: Chip matching filters(210,220) match-filter signals received from antennas(40) on the basis of a chip period and output them. Input signal generation buffers(310,320) generate vectors corresponding to signal blocks outputted from the chip matching filters(210,220) and output them according to a symbol period. Adaptive filter blocks(410-440) filter signals outputted from the input signal generation buffers(310,320) according to a tab weight controlled by a specific period and output them. A coupler(600) couples the signals outputted from the adaptive filter blocks(410-440) and outputs it. A data determining unit(700) restores an original signal that a specific user intends to transmit by using a signal outputted by the coupler(600). A reference signal selector(800) selectively outputs either a signal outputted from the data determining unit(700) or a learn data signal. Error generation blocks(510-540) generate an error signal for controlling a tap weight used in the adaptive filter blocks(410-440) by using a signal outputted from the reference signal selector(800) and a signal outputted from the adaptive filter blocks(410-440).
Abstract translation: 目的：通过改善多径衰落信道环境中的数据检测性能，为高速度的质量服务提供了采用空时块编码的DS / CDMA通信系统的自适应干扰减轻接收机。 构成：芯片匹配滤波器（210,220）基于芯片周期从天线（40）接收的匹配滤波器信号并输出它们。 输入信号产生缓冲器（310,320）产生与从芯片匹配滤波器（210,220）输出的信号块相对应的矢量，并根据符号周期输出它们。 自适应滤波器块（410-440）根据由特定周期控制的标签权重对从输入信号产生缓冲器（310,320）输出的信号进行滤波并输出。 耦合器（600）耦合从自适应滤波器块（410-440）输出的信号并将其输出。 数据确定单元（700）通过使用由耦合器（600）输出的信号来恢复特定用户想要发送的原始信号。 参考信号选择器（800）有选择地输出从数据确定单元（700）输出的信号或学习数据信号。 错误产生块（510-540）通过使用从参考信号选择器（800）输出的信号和从自适应滤波器块输出的信号产生用于控制自适应滤波器块（410-440）中使用的抽头加权的误差信号 （410-440）。
-
Patent Agency Ranking
公开(公告)号：KR1020030054306A
公开(公告)日：2003-07-02
申请号：KR1020010084447
申请日：2001-12-24
Applicant: 한국전자통신연구원
IPC: H04N21/431 , H04N21/434
CPC classification number: H04N21/4312 , H04N21/4345 , H04N21/4355
Abstract: PURPOSE: A system and method for automatically converting digital broadcasting program guide information are provided to automatically convert ATSC program guide information into digital video broadcasting program guide information. CONSTITUTION: A system for automatically converting digital broadcasting program guide information includes a packet receiver(120), a program guide information extractor(130), a system and information program table generator(140). The packet receiver receives a program and system Internet transmission stream packet from ATSC broadcasting stream. The program guide information extractor constructs table data using the PSIP transmission stream packet to extract ATSC program guide information. The system and information program table generator generates DVB program guide information tables with respect to channels using the extracted program guide information.
Abstract translation: 目的：提供用于自动转换数字广播节目指南信息的系统和方法，以将ATSC节目指南信息自动转换为数字视频广播节目指南信息。 构成：用于自动转换数字广播节目指南信息的系统包括分组接收器（120），节目指南信息提取器（130），系统和信息节目表生成器（140）。 分组接收机从ATSC广播流接收节目和系统因特网传输流分组。 节目指南信息提取器使用PSIP传输流分组来构建表数据，以提取ATSC节目指南信息。 系统和信息节目表生成器使用提取的节目指南信息生成关于频道的DVB节目指南信息表。
-
-
-
-
公开(公告)号：KR101920304B1
公开(公告)日：2018-11-21
申请号：KR1020130124461
申请日：2013-10-18
Applicant: 한국전자통신연구원
Abstract: 디지털방송신호를제공하는장치및 방법을제공한다. 디지털방송신호제공장치는지상파디엠비신호로부터제1 재난메시지신호를검출하고, 제1 재난메시지신호의제1 필드의값에기초하여음영지역용재난경보서비스를위한재난방송활성화데이터를포함하는제2 재난메시지신호를생성하는재난방송부및 재난방송부로부터전달된제2 재난메시지신호의송출을제어하는방송신호중계부를포함한다.
-
-
-
-
-
-
-
-
-
Search Results
111
records
(took 0.029 seconds)
