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    • 3. 发明公开
    • 비트 대칭 그레이 코드를 이용하여 위상 편이 방식으로변조된 수신 심볼 신호를 비트 정보로 분할하는 방법 및 그장치
    • 使用位反射灰度代码将接收信号调制相位移位键分割的方法及其装置
    • KR1020090063957A
    • 2009-06-18
    • KR1020070131497
    • 2007-12-14
    • 한국전자통신연구원삼성전자주식회사
    • 유창완윤동원현광민이영하이훈최정필홍언영이예훈박윤옥
    • H04L27/22
    • H04L27/22H04L27/3863
    • A method and a device for dividing a receiving symbol signal into bit information are provided to perform a bit division process in a two dimensions simply by dividing the PSK(Phase Shift Keying) modulated symbol into the bit information in consideration of BRGC(Bit Reflected Gray Code) characteristic by using a coordinate rotation method. A rotation angle calculator(150) calculates the rotation angle by using each absolute value about I channel and Q channel symbol signals of the receiving signal which is arranged with the interval of the phase angle on a two dimensional concentric circle. A bit information converter(170) extracts the bit information about each of the I channel or Q channel symbol signals which are rotated by using a rotation angle outputted from the rotation angle calculator. An absolute value converter(120) produces each absolute value about the values of the I channel and Q channel symbol signals of the receiving symbol. A phase angle calculator(130) produces a radian phase angle by using each absolute value about the value of I channel and Q channel outputted from the absolute value converter. A symbol arrangement value calculator(140) produces an arrangement value of the symbols comprising the I channel or Q channel symbol signals by using the radian phase angle outputted from the phase angel calculator.
    • 提供了一种将接收符号信号分成比特信息的方法和装置,以便通过将PSK(相移键控)调制的符号分解成比特信息来考虑BRGC(比特反射灰色 代码)特性使用坐标旋转法。 旋转角度计算器(150)通过使用在二维同心圆上以相位角间隔排列的接收信号的大约I通道和Q通道符号信号的绝对值来计算旋转角度。 位信息转换器(170)提取关于通过使用从旋转角计算器输出的旋转角旋转的I通道或Q通道符号信号中的每一个的位信息。 绝对值转换器(120)产生关于接收符号的I信道和Q信道符号信号的值的每个绝对值。 相位角计算器(130)通过使用关于从绝对值转换器输出的I通道和Q通道的值的绝对值产生弧度相位角。 符号排列值计算器(140)通过使用从相位角计算器输出的弧度相位角来产生包括I通道或Q通道符号信号的符号的排列值。
    • 5. 发明公开
    • MIMO MMSE 수신기 기반의 LLR 신뢰도 향상 기법
    • 基于MIMO系统中MMSE检测的LLR的可靠性改进技术
    • KR1020110065114A
    • 2011-06-15
    • KR1020090121974
    • 2009-12-09
    • 한국전자통신연구원삼성전자주식회사
    • 유창완박윤옥김재권손경열이훈안지환
    • H04B7/04
    • H04B7/0854H03M13/3927H04L25/0256
    • PURPOSE: A method for increasing an LLR(Log Likelihood Ratio) reliability based on a MIMO(Multi Input Multi Output) MMSE(Minimum Mean Square Error) receiver is provided to determine the LLR of a vector which does not satisfy the reciprocity as 0. CONSTITUTION: If an SINR(Signal and Interference and Noise Ratio) information about each existing stream is not available, the SINR is the same about the each stream, the LLR of an MMSE symbols which do not satisfy a reciprocity is determined as 0(204). Therefore, it is prevented that the LLR value of the high error probability is used for the channel encoding. If the SINR information of each stream is available, or the SINR of each stream is not same, the removed a priori item is calculated using the reciprocity information.
    • 目的:提供一种基于MIMO(多输入多输出)MMSE(最小均方误差)接收机来增加LLR(对数似然比)可靠性的方法,以确定不满足互易性的向量的LLR为0。 构成:如果关于每个现有流的SINR(信号和干扰和噪声比)信息不可用,则SINR对于每个流是相同的,不满足互易性的MMSE符号的LLR被确定为0(204 )。 因此,阻止了将高错误概率的LLR值用于信道编码。 如果每个流的SINR信息可用,或者每个流的SINR不相同,则使用互易性信息来计算移除的先验项。
    • 7. 发明公开
    • 이득 제어 장치 및 신호 수신 방법
    • 用于增益控制的装置和接收信号的方法
    • KR1020100064278A
    • 2010-06-14
    • KR1020090025586
    • 2009-03-25
    • 한국전자통신연구원삼성전자주식회사
    • 이훈방영조방승재박윤옥
    • H04B7/08H04B7/005
    • H04B7/08H04L27/2647
    • PURPOSE: If a symbol which beam is formed and a symbol which beam is not formed are mixed in one frame, a device for gain control and a method for receiving signal are provided to revise a wireless signal by considering a average power of the symbol which beam is formed, thereby performing an accurate gain control. CONSTITUTION: A map interpreter grasps a symbol section which beam is formed among wireless signals. According to output of a map interpreter, a power calculator(620) calculates average power of the symbol section which beam is formed. A gain calculator(630) outputs a gain control signal from output of the power calculator. A switch(650) outputs a gain from the gain control signal. Based on a gain, the wireless signal is revised.
    • 目的:如果一个波束形成的符号和没有形成波束的符号混合在一个帧中,则提供增益控制装置和接收信号的方法,以通过考虑无线信号的平均功率来修正无线信号 形成光束,从而执行精确的增益控制。 构成:地图解释器掌握在无线信号之间形成波束的符号部分。 根据映射解释器的输出,功率计算器(620)计算形成该光束的符号部分的平均功率。 增益计算器(630)从功率计算器的输出输出增益控制信号。 开关(650)从增益控制信号输出增益。 基于增益,无线信号被修改。
    • 10. 发明授权
    • 간섭 제거 방법 및 장치
    • 干扰消除的方法和装置
    • KR100888510B1
    • 2009-03-12
    • KR1020070126063
    • 2007-12-06
    • 한국전자통신연구원삼성전자주식회사
    • 이훈유창완박윤옥
    • H04L27/26H04B15/00
    • H04L25/03159H04L27/2647
    • A method and an apparatus for interference cancellation are provided to offer an optimal interference cancellation function regardless of the change of the interference in an OFDM(Orthogonal Frequency Division Multiplexing) wireless transmission system. A plurality of transform units(100) convert a plurality of received signals into a plurality of frequency domain signals. A plurality of interference cancellation units(200) cancel the interference from the frequency domain signals and generates the interference cancellation signal. A plurality of dispersion detection units(300) measures a plurality of residue interference amounts corresponding to the plurality of interference cancellation signals. An output selection unit(600) selects one interference cancellation signal having the smallest residue interference amount among the plurality of interference cancellation signals. Each dispersion detection unit includes a determination unit, a measuring unit and an accumulation unit. The determination unit determines the digital demodulation symbol corresponding to the subcarrier of the interference cancellation signal. The measuring unit measures difference between the digital demodulation symbol and the subcarrier. The accumulation unit calculates the dispersion corresponding to the residue interference amount.
    • 提供用于干扰消除的方法和装置,以提供最佳的干扰消除功能,而不管OFDM(正交频分复用)无线传输系统中的干扰的变化。 多个变换单元(100)将多个接收信号转换为多个频域信号。 多个干扰消除单元(200)消除来自频域信号的干扰并产生干扰消除信号。 多个色散检测单元(300)测量对应于多个干扰消除信号的多个残留干扰量。 输出选择单元(600)选择多个干扰消除信号中具有最小残留干扰量的一个干扰消除信号。 每个色散检测单元包括确定单元,测量单元和累积单元。 确定单元确定与干扰消除信号的子载波对应的数字解调符号。 测量单元测量数字解调符号与子载波之间的差异。 累积单元计算与残留干扰量相对应的色散。