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    • 53. 发明授权
    • Apparatus and method for receiving data in a mobile communication system
    • 用于在移动通信系统中接收数据的装置和方法
    • US07554945B2
    • 2009-06-30
    • US11416246
    • 2006-05-03
    • Dong-Jun LeeSung-Kwon JoJi-Won LeeKi-Seob HongYun-Seok Choi
    • Dong-Jun LeeSung-Kwon JoJi-Won LeeKi-Seob HongYun-Seok Choi
    • H04W4/00
    • H04L1/0021H04L1/0025H04L1/1867H04W24/00
    • An apparatus and method for receiving data in a mobile station for a mobile communication system using multi-user packet data are provided, in which a preamble power measurer measures preamble power of the multi-user packet data received from a base station and transmits the result value to a controller. The controller compares the measured power with a predetermined threshold, simultaneously decodes the multi-user packet data according to all transport formats if the measured power is lower than the threshold, and decodes the multi-user packet data according to a predetermined transport format if the measured power is higher than or equal to the threshold. A plurality of decoders decode the received multi-user packet data according to a control signal from the controller, wherein the number of the decoders depends upon the total number of transport formats for the multi-user packet data.
    • 提供了一种用于在移动站中使用多用户分组数据接收数据的装置和方法,其中前导码功率测量器测量从基站接收的多用户分组数据的前导码功率并将结果发送 控制器的值。 控制器将测量的功率与预定阈值进行比较,如果测量的功率低于阈值,则根据所有传输格式同时解码多用户分组数据,并且如果所述多用户分组数据如果 测量功率高于或等于阈值。 多个解码器根据来自控制器的控制信号对接收的多用户分组数据进行解码,其中解码器的数量取决于多用户分组数据的传输格式的总数。
    • 59. 发明授权
    • Linearization compensation system of digital TV relay apparatus and method thereof
    • 数字电视中继装置的线性化补偿系统及其方法
    • US06917389B2
    • 2005-07-12
    • US10025571
    • 2001-12-26
    • Ji Won Lee
    • Ji Won Lee
    • H04N7/015H04N5/21H04N5/38H04N5/40H04N5/455
    • H04N5/38H04N5/21
    • A linear compensation system of a digital TV relay or other apparatus preferably includes a transmitting unit configured to modulate a data to an intermediate frequency (IF) signal, up convert the IF signal to an RF signal, and amplify the RF signal to a predetermined level using a high power amplifier (HPA). The system also includes a linear compensation unit to preferably directly vary a step size of an adaptive equalizer according to whether a signal-to-noise ratio (SNR) or an error vector magnitude (EVM) for an output signal of the HPA satisfies an advanced television systems committee (ATSC) or other standard. The linear compensation unit is thus configured to output an improved linear compensation coefficient to a modulator of the transmitting unit.
    • 数字TV继电器或其他装置的线性补偿系统优选地包括被配置为将数据调制为中频(IF)信号的发送单元,将IF信号上变频为RF信号,并将RF信号放大到预定水平 使用高功率放大器(HPA)。 该系统还包括线性补偿单元,以根据HPA的输出信号的信噪比(SNR)或误差矢量幅度(EVM)是否满足先进的信号,优选地直接改变自适应均衡器的步长 电视系统委员会(ATSC)或其他标准。 因此,线性补偿单元被配置为向发送单元的调制器输出改进的线性补偿系数。