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    • 4. 发明授权
    • Calibrating a wireless communication device
    • 校准无线通信设备
    • US08175538B1
    • 2012-05-08
    • US12334799
    • 2008-12-15
    • Chin-Hung ChenNing Zhang
    • Chin-Hung ChenNing Zhang
    • H04B1/00
    • H04B7/0413H04B17/12
    • In a multiple-input, multiple-output system, the frequency of transmitted signals can be partitioned into some number of frequency bins. During an exchange of sounding signals, a first station can monitor the quality of the signals to select a second station that is qualified to participate in a calibration procedure. The first station can generate a first set of channel characteristics for a particular frequency bin based on the sounding signal it receives from the second station. The first station also receives channel state information from the second station which can be used to generate a second set of channel characteristics for the particular frequency bin. Then, the selected subsets of the first and second sets can be manipulated in order to determine a set of correction values for that frequency bin as well as for other frequency bins.
    • 在多输入多输出系统中,发射信号的频率可以分成若干个频率仓。 在交换探测信号期间,第一站可以监视信号的质量以选择有资格参与校准过程的第二站。 第一站可以基于从第二站接收的探测信号,为特定频率仓产生第一组信道特性。 第一站还从第二站接收可用于为特定频率仓产生第二组信道特性的信道状态信息。 然后,可以操纵第一和第二组的选定子集,以便确定该频率仓以及其它频率仓的一组校正值。
    • 5. 发明申请
    • Method And Apparatus For Coding And Interleaving For Very High Throughput Wireless Communications
    • 用于非常高吞吐量无线通信的编码和交织的方法和装置
    • US20120076234A1
    • 2012-03-29
    • US13245776
    • 2011-09-26
    • Youhan KimNing ZhangChin-Hung Chen
    • Youhan KimNing ZhangChin-Hung Chen
    • H04L27/04
    • H04B7/0456H03M13/6312H04B7/0413H04L1/0071H04L1/0606H04L5/0023H04L5/0046H04L5/0064H04L27/2626H04L27/2647
    • A wireless transmitter can include a plurality of bandwidth modules, each bandwidth module processing data based on a predetermined frequency band. In one embodiment, such a wireless transmitter can include encoding components for receiving transmit data and generating encoded data. A multiple-input multiple-output (MIMO) stream parser can receive the encoded data and generate a plurality of MIMO streams. A first module parser coupled to a first MIMO stream can generate a first plurality of partial MIMO streams. A first bandwidth module can include a first interleaver that interleaves bits of the first partial MIMO stream and generates first interleaved data. A second bandwidth module can include a second interleaver that interleaves bits of the second partial MIMO stream and generates second interleaved data. A first inverse fast Fourier transform (IFFT) unit can combine and process the first and second interleaved data and generate a first transmission MIMO stream.
    • 无线发射机可以包括多个带宽模块,每个带宽模块基于预定频带处理数据。 在一个实施例中,这样的无线发射机可以包括用于接收发送数据和生成编码数据的编码组件。 多输入多输出(MIMO)流解析器可以接收编码数据并产生多个MIMO流。 耦合到第一MIMO流的第一模块解析器可以生成第一多个部分MIMO流。 第一带宽模块可以包括交织第一部分MIMO流的比特并产生第一交织数据的第一交织器。 第二带宽模块可以包括交织第二部分MIMO流的比特并产生第二交织数据的第二交织器。 第一逆快速傅里叶变换(IFFT)单元可以组合并处理第一和第二交错数据并生成第一传输MIMO流。
    • 6. 发明授权
    • Phase tracking method and device thereof
    • 相位跟踪方法及其装置
    • US07639750B2
    • 2009-12-29
    • US11486070
    • 2006-07-14
    • Chin-Hung Chen
    • Chin-Hung Chen
    • H04K1/10
    • H04L27/2679H04L27/266H04L27/2695H04L2025/03414
    • A phase tracking device. A sampler samples the received signal according to a sampling frequency correction signal to generate a first signal. A phase de-rotator adjusts the phase of the first signal according to a carrier frequency correction signal to generate a second signal. A fast Fourier transformer performs a fast Fourier transformation on the second signal according to a symbol edge to generate a third signal. An equalizer equalizes the third signal according to the estimated channel to generate an output signal. A selector selects the output signal which meets the predetermined condition. A phase error metric processor generates the correction signals for both sampling clock frequency offset and carrier frequency offset according to the selected sub-carrier indexes and their corresponding phase error metrics and channel estimates.
    • 相位跟踪装置。 采样器根据采样频率校正信号对接收到的信号进行采样以产生第一信号。 相位去旋转器根据载波频率校正信号来调节第一信号的相位以产生第二信号。 快速傅立叶变换器根据符号边缘对第二信号执行快速傅里叶变换,以产生第三信号。 均衡器根据估计的信道对第三信号进行均衡以产生输出信号。 选择器选择满足预定条件的输出信号。 相位误差度量处理器根据选择的子载波索引及其对应的相位误差度量和信道估计来产生针对采样时钟频率偏移和载波频率偏移的校正信号。