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    • 8. 发明申请
    • Ultra wideband networks system and method capable of switching to high-speed mode or low-speed mode
    • 超宽带网络系统和方法能够切换到高速模式或低速模式
    • US20070081613A1
    • 2007-04-12
    • US11490029
    • 2006-07-21
    • Wan-jin KimJae-hyun Koo
    • Wan-jin KimJae-hyun Koo
    • H03D3/24
    • H04B1/71635H04B1/71637H04B1/7183
    • An ultra wideband network transmitter and receiver, and a method capable of switching to a high-speed mode or a low-speed mode are provided. The transmitter includes a multi-band orthogonal frequency division multiplexing (MB-OFDM) modem; a direct sequence code division multiple access (DS-CDMA) modem; a mode switch which switches to the MB-OFDM modem or the DS-CDMA modem according to a mode control signal; a phase lock loop (PLL) which locks a frequency used for MB-OFDM type modulation or the DS-CDMA type modulation; and a central processing unit (CPU) controls the PLL and mode switch. The receiver includes an MB-OFDM modem; an DS-CDMA modem; an automatic gain controller; an analog-to-digital converter; an PLL; a mode switch; and an CPU. The method includes receiving a command to transmit data; and switching to an MB-OFDM modem to select to a high-speed operation mode.
    • 提供了一种超宽带网络发射机和接收机以及能够切换到高速模式或低速模式的方法。 发射机包括多频带正交频分复用(MB-OFDM)调制解调器; 直接序列码分多址(DS-CDMA)调制解调器; 模式切换器,根据模式控制信号切换到MB-OFDM调制解调器或DS-CDMA调制解调器; 锁定用于MB-OFDM型调制或DS-CDMA型调制的频率的锁相环(PLL); 并且中央处理单元(CPU)控制PLL和模式开关。 接收机包括一个MB-OFDM调制解调器; 一个DS-CDMA调制解调器; 自动增益控制器; 一个模拟 - 数字转换器; 一个PLL; 模式开关 和一个CPU。 该方法包括接收发送数据的命令; 并切换到MB-OFDM调制解调器以选择高速操作模式。
    • 10. 发明申请
    • Signal reception apparatus and method for multi-band utlra-wideband communication systems
    • 用于多频带宽带通信系统的信号接收装置和方法
    • US20050037805A1
    • 2005-02-17
    • US10915452
    • 2004-08-11
    • Ye-hoon LeeSeung-young ParkYong-suk KimWan-jin KimWoo-kyung Lee
    • Ye-hoon LeeSeung-young ParkYong-suk KimWan-jin KimWoo-kyung Lee
    • H04J1/00H04B1/06H04B1/7136H04J13/00H04Q7/20H04B1/16
    • H04B1/71637
    • A signal reception apparatus and method for communication systems. The signal reception apparatus for communication systems according to the present invention is applicable to communication environments in which a plurality of sub-bands having different frequency bands are sequentially used for communications. An embodiment of the invention has a multi-band index generation unit, a multi-band frequency generation unit, a multiplication unit, a correlation signal reception unit, and a buffer unit. The multi-band index generation unit generates a multi-band index corresponding to a sub-band to which a received signal is transmitted in correspondence with the multi-band index. The multiplication unit outputs a signal obtained by multiplying the received signal by the multi-band frequency. The correlation signal reception unit integrates and outputs the signal of the multiplication unit based on an integral time set in correspondence with the multi-band index. Further, the buffer unit buffers the signal of the correlation signal reception unit to be outputted at a predetermined data rate.
    • 一种用于通信系统的信号接收装置和方法。 根据本发明的用于通信系统的信号接收装置可应用于其中具有不同频带的多个子带被顺序地用于通信的通信环境。 本发明的实施例具有多频带索引生成单元,多频带频率生成单元,乘法单元,相关信号接收单元和缓冲单元。 多频带索引生成单元根据多频带索引生成与发送接收信号的子带对应的多频带索引。 乘法单元输出通过将接收信号乘以多频带频率而获得的信号。 相关信号接收单元基于与多频带索引相对应地设定的积分时间积分并输出乘法单元的信号。 此外,缓冲器缓冲以预定数据速率输出的相关信号接收单元的信号。