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    • 5. 发明授权
    • Method for adjusting FFT window positioning in MB-OFDM UWB system
    • 在MB-OFDM UWB系统中调整FFT窗口定位的方法
    • US07729238B2
    • 2010-06-01
    • US11635272
    • 2006-12-07
    • Cheol-Ho ShinSung-Woo ChoiSang-In ChoKyu-Min KangSang-Sung ChoiKwang-Roh Park
    • Cheol-Ho ShinSung-Woo ChoiSang-In ChoKyu-Min KangSang-Sung ChoiKwang-Roh Park
    • H04J11/00
    • H04B1/7183H04L27/2605H04L27/265H04L27/2665
    • Provided is a method for adjusting Fast Fourier Transform (FFT) window positioning in a Multi Band Orthogonal Frequency Division Multiplexing Ultra-Wideband (MB-OFDM UWB) system. The method includes the steps of acquiring an initial FFT window position and a frequency hopping position, demodulating a received signal by using the initial FFT window position and the frequency hopping position acquired in the acquiring step, transmitting received data information to a Media Access Control (MAC) layer with a reception frame (RX frame) structure and judging at the MAC layer whether or not a packet error is occurred based on Frame Check Sequences (FCSs), and if no packet error is occurred, returning to the demodulating step, and if the packet error is occurred, changing a register map by using a predetermined interface line in a MAC-physical layer (MAC-PHY) interface to thereby adjust the FFT window position and the frequency hopping position, and then returning to the demodulating step.
    • 提供了一种用于在多频带正交频分复用超宽带(MB-OFDM UWB)系统中调整快速傅里叶变换(FFT)窗口定位的方法。 该方法包括以下步骤:获取初始FFT窗口位置和跳频位置,通过使用在获取步骤中获取的初始FFT窗口位置和跳频位置解调接收信号,将接收的数据信息发送到介质访问控制( MAC)层,并且在MAC层判断基于帧检查序列(FCS)是否发生分组错误,并且如果没有发生分组错误,则返回到解调步骤,并且 如果发生分组错误,则通过使用MAC-物理层(MAC-PHY)接口中的预定接口线来改变寄存器映射,从而调整FFT窗口位置和跳频位置,然后返回到解调步骤。
    • 8. 发明申请
    • Parallel equalizer for DS-CDMA UWB system and method thereof
    • DS-CDMA UWB系统的并行均衡器及其方法
    • US20070133670A1
    • 2007-06-14
    • US11635937
    • 2006-12-08
    • Kyu-Min KangCheol-Ho ShinSung-Woo ChoiSang-In ChoSang-Sung ChoiKwang-Rob Park
    • Kyu-Min KangCheol-Ho ShinSung-Woo ChoiSang-In ChoSang-Sung ChoiKwang-Rob Park
    • H03H7/30
    • H04L25/03038H04L2025/03439
    • A parallel equalizer for a DS-CDMA UWB system and method thereof are provided. The parallel equalizer includes: a filter block for filtering a training input signal in a ‘training mode’, and filtering the plurality of input signals in parallel in a ‘symbol decision mode’; a symbol decision block for obtaining a symbol error based on a output from the filter block and a training symbol in the ‘training mode’, and estimating a transmission symbol for each of the input signals in the ‘symbol decision mode’, obtaining an error of one among the estimated transmission symbols for a symbol error calculating input signal; and an weight update block for updating a filter tap coefficients of the filter block based on the training input signal or the symbol error calculating input signal and the symbol error and transmitting the updated filter tap coefficients into the filter block.
    • 提供了一种用于DS-CDMA UWB系统的并行均衡器及其方法。 并行均衡器包括:滤波器块,用于以“训练模式”对训练输入信号进行滤波,并且以“符号判定模式”并行地对多个输入信号进行滤波; 用于基于来自滤波块的输出和“训练模式”中的训练符号获得符号误差的符号判定块,并且以“符号判定模式”为每个输入信号估计发送符号,获得误差 估计的传输符号中的一个用于符号误差计算输入信号; 以及权重更新块,用于基于训练输入信号或符号误差计算输入信号和符号误差来更新滤波器块的滤波器抽头系数,并将更新的滤波器抽头系数发送到滤波器块。