公开(公告)号：US20060068720A1

公开(公告)日：2006-03-30

申请号：US11232867

申请日：2005-09-23

申请人： Woo-kyung Lee ,  Jae-hyun Koo ,  Wan-jin Kim

发明人： Woo-kyung Lee ,  Jae-hyun Koo ,  Wan-jin Kim

IPC分类号： H04B1/40 ,  H04B1/06

CPC分类号： H04B1/7163 ,  H04B1/0082 ,  H04B1/7136

摘要： A frequency generation apparatus and a method are provided. The frequency generation apparatus for generating a plurality of center frequencies for use in multi-band hopping communication, includes: an oscillator generating an oscillation frequency; a reference frequency generator multiplying the oscillation frequency by a first multiplication rate to generate a reference frequency; a compensation frequency generator multiplying the oscillation frequency by a second multiplication rate to generate a compensation frequency for compensating for the influence of a frequency offset of the oscillation frequency; and a center frequency generator generating the plurality of center frequencies using the reference frequency and the compensation frequency. Therefore, by compensating for the influence of a frequency offset of an oscillation frequency on the generation of center frequencies, it is possible to generate stable center frequencies.

摘要翻译： 提供了一种频率发生装置和方法。 用于生成用于多频段跳频通信的多个中心频率的频率产生装置包括：产生振荡频率的振荡器; 参考频率发生器将振荡频率乘以第一乘法速率以产生参考频率; 补偿频率发生器将振荡频率乘以第二倍频，以产生用于补偿振荡频率的频率偏移的影响的补偿频率; 以及使用所述参考频率和所述补偿频率产生所述多个中心频率的中心频率发生器。 因此，通过补偿振荡频率的频率偏移对中心频率的产生的影响，可以产生稳定的中心频率。

公开(公告)号：US20070298814A1

公开(公告)日：2007-12-27

申请号：US11640276

申请日：2006-12-18

申请人： Wan-jin Kim ,  Min-seop Jeong

发明人： Wan-jin Kim ,  Min-seop Jeong

IPC分类号： H04Q7/20

CPC分类号： H04W64/00 ,  G01S5/12

摘要： A position recognition method and system include transmitting a first transmit signal and a second transmit signal via a first transmit antenna and a second transmit antenna of a transmitter at intervals; receiving the first transmit signal and the second transmit signal via an receive antenna of a receiver; and calculating a position of the receiver using transmission times of the first transmit signal and the second transmit signal. Accordingly, the mobile object can recognize its position efficiently.

摘要翻译： 位置识别方法和系统包括经由间隔的发射机的第一发射天线和第二发射天线发射第一发射信号和第二发射信号; 经由接收机的接收天线接收第一发射信号和第二发射信号; 以及使用第一发送信号和第二发送信号的发送时间来计算接收机的位置。 因此，移动体可以有效地识别其位置。

公开(公告)号：US20070081613A1

公开(公告)日：2007-04-12

申请号：US11490029

申请日：2006-07-21

申请人： Wan-jin Kim ,  Jae-hyun Koo

发明人： Wan-jin Kim ,  Jae-hyun Koo

IPC分类号： H03D3/24

CPC分类号： H04B1/71635 ,  H04B1/71637 ,  H04B1/7183

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07129867B2

公开(公告)日：2006-10-31

申请号：US11172856

申请日：2005-07-05

申请人： Wan-jin Kim ,  Jae-hyun Koo

发明人： Wan-jin Kim ,  Jae-hyun Koo

IPC分类号： H03M1/06

CPC分类号： H04L25/063 ,  H03M1/1295 ,  H04B1/719 ,  H04L27/2647

摘要： A DC offset correction apparatus and method of a receiver in a multiband-hopping communication system is provided. The DC offset correction apparatus of the receiver in the communication system which hops to a plurality of bands, includes a controller for generating and outputting a plurality of DC offset correction signals different from each other for the respective bands; a plurality of digital-to-analog converters (DACs) for receiving, digital-to-analog converting and outputting the plurality of the DC offset correction signals from the controller; an analog multiplexer (MUX) for switching to output one of the plurality of the DC offset correction signals output from the plurality of the DACs, respectively; and an adder for adding and outputting an input signal with the output signal of the analog MUX. Accordingly, the DC offset correction apparatus can be implemented by low-speed DACs and the fast analog MUX that are relatively small-sized and low-cost elements.

摘要翻译： 提供了一种多波段跳频通信系统中的接收机的DC偏移校正装置和方法。 通信系统中的接收机的DC偏移校正装置跳到多个频带，包括用于生成并输出对于各个频带彼此不同的多个DC偏移校正信号的控制器; 多个数模转换器（DAC），用于从控制器接收数字到模拟转换和输出多个DC偏移校正信号; 模拟多路复用器（MUX），用于分别输出从所述多个DAC输出的所述多个DC偏移校正信号中的一个; 以及用于将输入信号与模拟MUX的输出信号相加并输出的加法器。 因此，DC偏移校正装置可以由相对较小尺寸和低成本元件的低速DAC和快速模拟MUX来实现。

公开(公告)号：US20060001558A1

公开(公告)日：2006-01-05

申请号：US11172856

申请日：2005-07-05

申请人： Wan-jin Kim ,  Jae-hyun Koo

发明人： Wan-jin Kim ,  Jae-hyun Koo

IPC分类号： H03M1/06

CPC分类号： H04L25/063 ,  H03M1/1295 ,  H04B1/719 ,  H04L27/2647

摘要： A DC offset correction apparatus and method of a receiver in a multiband-hopping communication system is provided. The DC offset correction apparatus of the receiver in the communication system which hops to a plurality of bands, includes a controller for generating and outputting a plurality of DC offset correction signals different from each other for the respective bands; a plurality of digital-to-analog converters (DACs) for receiving, digital-to-analog converting and outputting the plurality of the DC offset correction signals from the controller; an analog multiplexer (MUX) for switching to output one of the plurality of the DC offset correction signals output from the plurality of the DACs, respectively; and an adder for adding and outputting an input signal with the output signal of the analog MUX. Accordingly, the DC offset correction apparatus can be implemented by low-speed DACs and the fast analog MUX that are relatively small-sized and low-cost elements.