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    • 2. 发明授权
    • Apparatus and method for transceiving data
    • 收发数据的装置和方法
    • US09071490B2
    • 2015-06-30
    • US13988432
    • 2011-11-16
    • Jong Soo Lim
    • Jong Soo Lim
    • H03C3/00H03K7/06H04L27/12H04L27/26
    • H04L27/262H04L27/2624
    • A data transmitting apparatus generates a plurality of pilot signals to be used for channel estimation by a data receiving apparatus, performs symbol mapping of a plurality of input data signals and a plurality of pilot signal into a plurality of data symbols and a plurality of pilot symbols, converts input symbols in the frequency domain including the plurality of data symbols and the plurality of pilot symbols into a real signal in the time domain, and performs angle modulation of the real signal. The data transmitting apparatus controls the amplitude of the sine component of the angle-modulated real signal by a gain that varies with a control signal and then transmits the real signal.
    • 数据发送装置生成由数据接收装置进行信道估计使用的多个导频信号,将多个输入数据信号和多个导频信号的符号映射执行为多个数据符号和多个导频符号 ,将包括多个数据符号和多个导频符号的频域中的输入符号转换为时域中的实际信号,并执行实际信号的角度调制。 数据发送装置通过以控制信号变化的增益来控制角度调制实信号的正弦分量的振幅,然后发送实信号。
    • 3. 发明授权
    • Apparatus and method for transmitting and receiving data
    • 用于发送和接收数据的装置和方法
    • US08711957B2
    • 2014-04-29
    • US13241483
    • 2011-09-23
    • Jong Soo LimSun Hyoung Kwon
    • Jong Soo LimSun Hyoung Kwon
    • H04K1/10H04L27/28
    • H04L27/2614
    • A data transmission apparatus is provided. A symbol mapper performs symbol mapping on information about an optimum key index that instructs a modified Walsh-Hadamard matrix that causes a minimum peak-to-average power ratio and generates a plurality of key symbols. A modified Walsh-Hadamard transformer generates a plurality of modified Walsh-Hadamard-transformed data symbols by performing modified Walsh-Hadamard transform on a plurality of data symbols according to a modified Walsh-Hadamard matrix that an optimum key index instructs. An inverse Fourier transformer generates a plurality of inverse Fourier-transformed symbols by performing inverse Fourier transform on a plurality of key symbols and a plurality of modified Walsh-Hadamard-transformed data symbols. A transmitter transmits a plurality of inverse Fourier-transformed symbols to a channel through at least one antenna.
    • 提供了一种数据传输装置。 符号映射器对关于指示修改的沃尔什 - 哈达玛矩阵的最优密钥索引的信息执行符号映射,其导致最小峰值与平均功率比,并且生成多个密钥符号。 经修改的沃尔什 - 哈达玛变换器通过根据最佳密钥索引指示的修改的沃尔什 - 哈达玛矩阵对多个数据符号执行修改的沃尔什 - 哈达玛变换来生成多个经修改的沃尔什 - 哈达玛变换数据符号。 逆傅立叶变换器通过对多个关键符号和多个修改的沃尔什 - 哈达玛变换数据符号执行逆傅里叶变换来生成多个反傅立叶变换符号。 发射机通过至少一个天线向信道发射多个逆傅里叶变换符号。
    • 10. 发明授权
    • Apparatus and method for transmitting and receiving data
    • 用于发送和接收数据的装置和方法
    • US08605822B2
    • 2013-12-10
    • US13411423
    • 2012-03-02
    • Jong Soo Lim
    • Jong Soo Lim
    • H04L27/12
    • H04L27/2623
    • A data transmitting apparatus performs symbol mapping on each of first and second input data to generate a plurality of first and second modulation data symbols, performs inverse fast Fourier transform (IFFT) on the plurality of first and second modulation data symbols to convert the same into first and second real signals of a time domain from a frequency domain, angle-modulates the first and second real signals, and transmits the same to a data receiving apparatus. Thus, a peak-to-average power ratio (PAPR) can be lowered, while the same data transfer amount as that of the general OFDM data transmitting apparatus is maintained.
    • 数据发送装置对第一输入数据和第二输入数据进行符号映射,生成多个第一和第二调制数据符号,对多个第一和第二调制数据符号进行快速傅立叶逆变换(IFFT),将其转换为 来自频域的时域的第一和第二实信号对第一和第二实信号进行角度调制,并将其发送到数据接收装置。 因此,可以降低峰均功率比(PAPR),同时保持与通用OFDM数据发送装置相同的数据传送量。