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    • 1. 发明公开
    • 디에스/시디엠에이 미모 안테나 시스템에서 보다 나은수신 다이버시티 이득을 얻기 위한 전송 시스템
    • 用于在DS / CDMA MIMO天线系统中获得更好的多样性增益的传输系统
    • KR1020040035505A
    • 2004-04-29
    • KR1020020064674
    • 2002-10-22
    • 한국전자통신연구원한국과학기술원
    • 김성락정영호최인경이용훈
    • H04B7/04
    • H04B7/0413H04B7/0613H04B7/0851H04B7/0854
    • 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.
    • 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。
    • 2. 发明公开
    • 시공간 블록 코딩이 사용된 DS/CDMA 통신 시스템을위한 적응 간섭 완화 수신 장치
    • 使用空时块编码的DS / CDMA通信系统的自适应干扰减轻接收机
    • KR1020040021188A
    • 2004-03-10
    • KR1020020052764
    • 2002-09-03
    • 한국전자통신연구원한국과학기술원
    • 최인경정영호김성락홍승철이용훈
    • H04B1/711
    • H04B1/71055H04B1/7115H04B7/04H04B7/0854H04L2025/03605
    • 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).
    • 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)。
    • 8. 发明公开
    • 통신시스템에서 다중 사용자 스케쥴링 방법 및 장치
    • 用于调度通信中多个用户的方法和装置
    • KR1020080081698A
    • 2008-09-10
    • KR1020070022102
    • 2007-03-06
    • 삼성전자주식회사한국과학기술원
    • 김유석황인수정영호조면균김형명강태성안우근김대현
    • H04B7/04
    • H04B7/0617H04B7/0452H04B7/0632H04B7/0634H04W72/121
    • A multiuser scheduling method in a communication system and an apparatus for the same are provided to maximize selection diversity and multiplexing by adaptively determining the number of simultaneous users according to the number of users and the average SNR(Signal to Noise Ratio) in multiplexing between Tx antennas and multiple user terminals. A multiuser scheduling apparatus in a communication system comprises a user grouping part(306), a group scheduling part(308), and a user group beam subset creation part(310). The user grouping part groups a plurality of user terminals according to partial channel information which is received from the user terminals. The group scheduling part determines the number of optimal user terminals for multiplexing according to the number of users and their SINRs(Signal to Interference plus Noise Ratios). The user group beam subset creation part selects Tx beams equivalent to the determined number and creates a beam subset.
    • 提供通信系统中的多用户调度方法及其装置,以通过根据用户数量自适应地确定同时用户的数量和在Tx之间的多路复用中的平均SNR(信噪比)来最大化选择分集和复用 天线和多个用户终端。 通信系统中的多用户调度装置包括用户分组部分(306),组调度部分(308)和用户组波束子集创建部分(310)。 用户分组部分根据从用户终端接收的部分信道信息分组多个用户终端。 组调度部根据用户数及其SINR(信号到干扰加噪声比)确定用于多路复用的最优用户终端的数量。 用户组波束子集创建部分选择等于确定的号码的Tx波束并创建波束子集。
    • 9. 发明公开
    • 다중 입력 다중 출력 이동 통신 시스템에서 신호 송수신장치 및 방법
    • 用于在多输入多输出移动通信系统中发送/接收信号的装置和方法
    • KR1020080063590A
    • 2008-07-07
    • KR1020070000175
    • 2007-01-02
    • 삼성전자주식회사한국과학기술원
    • 정영호조면균정진곤이용훈
    • H04B7/04H04B7/02H04L1/02
    • H04L1/0643H04B7/0634H04B7/0669H04B7/0891H04L1/0656H04L25/0204H04L2025/03426H04B7/0456
    • An apparatus and a method for transmitting or receiving a signal in a MIMO(Multiple Input Multiple Output) mobile communication system are provided to solve a spatial correlation diagram problem in transmission antennas by using a preprocessing scheme. An apparatus for transmitting or receiving a signal includes a PSC(Parallel to Serial Converter)(311), STBC(Space Time Block Coding) encoders(313-1,313-2), a preprocessing unit(315) and transmission antennas(317-1-317-4). The PSC converts a rearranged transmission data stream into two sub transmission data streams, and outputs each of the sub transmission data streams to corresponding STBC encoders. The STBC encoders encode the inputted sub transmission data stream by using a STBC scheme, and output the encoded data stream to the preprocessing unit. The preprocessing unit serially converts the signals outputted by the STBC encoders and generates double space time transmit diversity symbols.
    • 提供了一种用于在MIMO(多输入多输出)移动通信系统中发送或接收信号的装置和方法,以通过使用预处理方案来解决发送天线中的空间相关图问题。 用于发送或接收信号的装置包括PSC(并行到串行转换器)(311),STBC(空时块编码)编码器(313-1,313-2),预处理单元(315)和发送天线(317-1 -317-4)。 PSC将重新布置的传输数据流转换成两个子传输数据流,并将每个子传输数据流输出到相应的STBC编码器。 STBC编码器通过使用STBC方案对输入的子传输数据流进行编码,并将编码数据流输出到预处理单元。 预处理单元串行转换由STBC编码器输出的信号,并产生双倍时空发射分集符号。