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    • 56. 发明公开
    • 공간 변조 방식에서의 안테나 스위칭 장치
    • 天线调制装置空间调制
    • KR1020140110371A
    • 2014-09-17
    • KR1020130024578
    • 2013-03-07
    • 한국전자통신연구원서울과학기술대학교 산학협력단
    • 김봉수김광선강민수변우진박형철
    • H04L25/40H04L27/26
    • H04B7/0413H01Q3/24H01Q21/0006H04B7/0604
    • The present invention relates to an antenna switching apparatus in a spatial modulation method capable of minimizing signal distortion by asynchronous switching time by controlling the delay time of a switching control signal applied to each switching unit by analyzing a signal outputted from the switching units connected to multiple antennas. To achieve this, the present invention provides the antenna switching apparatus in the spatial modulation method comprising: a control signal generation unit to generate a switching control signal; the multiple switching units installed at the front ends of each of the antennas to apply a transmission signal to the antennas by executing switching operation according to the switching control signal; a delay analysis unit to calculate delay information for synchronizing the switching control signal applied to the multiple switching units by receiving the transmission signal outputted from each switching unit; and a delay control unit to individually apply the switching control signal to each of the switching units by synchronizing the switching control signal according to the calculated delay information.
    • 本发明涉及一种空间调制方法中的天线切换装置,该方法能够通过分析从连接到多个切换单元的切换单元输出的信号,通过控制施加到各切换单元的切换控制信号的延迟时间,通过异步切换时间来最小化信号失真 天线。 为了实现这一点,本发明提供了一种空间调制方法中的天线切换装置,包括:控制信号生成单元,生成开关控制信号; 所述多个切换单元安装在每个天线的前端,通过根据切换控制信号执行切换操作向天线施加发送信号; 延迟分析单元,用于计算延迟信息,用于通过接收从每个开关单元输出的发送信号来同步施加到多个开关单元的开关控制信号; 以及延迟控制单元,用于通过根据所计算的延迟信息使切换控制信号同步,来将切换控制信号单独地应用于每个切换单元。
    • 60. 发明公开
    • SC-FDMA 시스템에서 전송 다이버시티를 이용한 데이터 전송장치 및 방법
    • 在SC-FDMA系统中使用传输多样性的数据传输的装置和方法
    • KR1020100019930A
    • 2010-02-19
    • KR1020080134256
    • 2008-12-26
    • 엘지전자 주식회사
    • 고현수한승희정재훈임빈철이문일
    • H04B7/06H04B7/208
    • H04B7/0613H04B7/0604H04B7/0669H04B7/0671H04B7/068H04B7/0695H04B7/0697H04B7/12H04L25/03343H04L27/2615H04L27/2626
    • PURPOSE: An apparatus and a method for data transmission using transmission diversity in an SC-FDMA system are provided to give transmission diversity and to reduce PAPR(Peak power to Average Power Ratio) by applying PVS(Precoding Vector Switching) scheme in an SC-FDMA system. CONSTITUTION: A data processor(123) creates data symbol by performing coding and modulation of information bit. A DFT(Discrete Fourier Transform) unit(121) creates a frequency range symbol by performing DFT for the data symbol. A precoding controller(122) varies a weight matrix per change period and provides the weight matrix to a precoding unit. The precoding unit precodes a frequency domain symbol using the weight matrix. A sub-carrier mapper(124) maps the precoded frequency domain symbol on subcarrier. An IFFT(Inverse Fast Fourier Transform) unit(125) creates SC-FDMA(Single Carrier-Frequency Division Multiple Access) symbol by performing IFFT for the output of the subcarrier mapper.
    • 目的:提供一种在SC-FDMA系统中使用传输分集的数据传输的装置和方法,以通过在SC-FDMA系统中应用PVS(预编码向量切换)方案来提供传输分集并减少PAPR(峰值功率与平均功率比) FDMA系统。 构成:数据处理器(123)通过执行信息位的编码和调制来创建数据符号。 DFT(离散傅立叶变换)单元(121)通过对数据符号执行DFT来创建频率范围符号。 预编码控制器(122)每改变周期改变加权矩阵,并将加权矩阵提供给预编码单元。 预编码单元使用权重矩阵对频域符号进行预编码。 子载波映射器(124)将预编码的频域符号映射在子载波上。 IFFT(逆快速傅立叶变换)单元(125)通过对子载波映射器的输出执行IFFT来创建SC-FDMA(单载波 - 频分多址)符号。