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    • 1. 发明授权
    • Multi-hop communication method based on distributed medium access control
    • 基于分布式媒体访问控制的多跳通信方法
    • US08526430B2
    • 2013-09-03
    • US12967687
    • 2010-12-14
    • Young-Ae JeonSang-Jae LeeSang-Sung Choi
    • Young-Ae JeonSang-Jae LeeSang-Sung Choi
    • H04L12/28
    • H04W40/02H04L45/20H04L45/46
    • Disclosed herein is a multi-hop communication method based on distributed medium access control. In the multi-hop communication method based on distributed medium access control according to the present invention, a beacon frame which includes a first multi-hop information element is generated and transmitted to a neighboring device so as to search for a route to an external device which does not belong to a beacon group. A third multi-hop information element, which is generated based on a second multi-hop information element generated by the external device, is received from the neighboring device. A multi-hop route to the external device is set up in accordance with the third multi-hop information element, and data is transmitted to the external device. Therefore, a multi-hop route between devices in the extended beacon group can be efficiently set up.
    • 本文公开了一种基于分布式媒体访问控制的多跳通信方法。 在根据本发明的基于分布式媒体访问控制的多跳通信方法中,生成包括第一多跳信息元素的信标帧并发送到相邻设备,以搜索到外部设备的路由 它不属于信标组。 从相邻设备接收基于由外部设备生成的第二多跳信息元素生成的第三多跳信息元素。 根据第三多跳信息元素建立到外部设备的多跳路由,并将数据发送到外部设备。 因此,可以有效地建立扩展信标组中的设备之间的多跳路由。
    • 2. 发明申请
    • MULTI-HOP COMMUNICATION METHOD BASED ON DISTRIBUTED MEDIUM ACCESS CONTROL
    • 基于分布式中等接入控制的多通信通信方法
    • US20110149958A1
    • 2011-06-23
    • US12967687
    • 2010-12-14
    • Young-Ae JEONSang-Jae LeeSang-Sung Choi
    • Young-Ae JEONSang-Jae LeeSang-Sung Choi
    • H04L12/56
    • H04W40/02H04L45/20H04L45/46
    • Disclosed herein is a multi-hop communication method based on distributed medium access control. In the multi-hop communication method based on distributed medium access control according to the present invention, a beacon frame which includes a first multi-hop information element is generated and transmitted to a neighboring device so as to search for a route to an external device which does not belong to a beacon group. A third multi-hop information element, which is generated based on a second multi-hop information element generated by the external device, is received from the neighboring device. A multi-hop route to the external device is set up in accordance with the third multi-hop information element, and data is transmitted to the external device. Therefore, a multi-hop route between devices in the extended beacon group can be efficiently set up.
    • 本文公开了一种基于分布式媒体访问控制的多跳通信方法。 在根据本发明的基于分布式媒体访问控制的多跳通信方法中,生成包括第一多跳信息元素的信标帧并发送到相邻设备,以搜索到外部设备的路由 它不属于信标组。 从相邻设备接收基于由外部设备生成的第二多跳信息元素生成的第三多跳信息元素。 根据第三多跳信息元素建立到外部设备的多跳路由,并将数据发送到外部设备。 因此,可以有效地建立扩展信标组中的设备之间的多跳路由。
    • 8. 发明授权
    • Apparatus for adjusting frequency characteristic and Q factor of low pass filter and method thereof
    • 用于调整低通滤波器的频率特性和Q因子的装置及其方法
    • US07564301B2
    • 2009-07-21
    • US11927904
    • 2007-10-30
    • Seung-Sik LeeBong-Hyuk ParkChang-Wan KimSang-Sung Choi
    • Seung-Sik LeeBong-Hyuk ParkChang-Wan KimSang-Sung Choi
    • H03K5/00
    • H03H7/0153H03H11/1291
    • Provided are an apparatus for adjusting frequency characteristic and Q factor of a low pass filter (LPF) and a method thereof. The apparatus includes: a frequency comparing unit for calculating a first square value and a second square value, and comparing a first reference value with the first and the second square values; a frequency adjusting unit for adjusting the frequency characteristic to range the first reference value between the first square value and the second square value; a Q factor comparing unit for calculating a third square value, and comparing a second and a third reference values with the third square value; a control unit for activating the Q factor comparing unit when the frequency characteristic is completely adjusted; and a Q factor adjusting unit for adjusting the Q factor to range the third square value between the second reference value and the third reference value.
    • 提供一种用于调整低通滤波器(LPF)的频率特性和Q因子的装置及其方法。 该装置包括:频率比较单元,用于计算第一平方值和第二平方值,并将第一参考值与第一和第二平方值进行比较; 频率调整单元,用于调整频率特性以使第一参考值在第一平方值和第二平方值之间变化; 用于计算第三平方值的Q因子比较单元,以及将第二和第三参考值与第三平方值进行比较; 控制单元,用于当频率特性被完全调整时激活Q因子比较单元; 以及Q因子调整单元,用于调整Q因子以使第三平方值在第二参考值和第三参考值之间。
    • 9. 发明申请
    • 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
    • US20070133392A1
    • 2007-06-14
    • 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
    • H04J11/00H04J1/00
    • 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。
    • 10. 发明授权
    • 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
    • US08009728B2
    • 2011-08-30
    • US11635937
    • 2006-12-08
    • Kyu-Min KangCheol-Ho ShinSung-Woo ChoiSang-In ChoSang-Sung ChoiKwang-Roh Park
    • Kyu-Min KangCheol-Ho ShinSung-Woo ChoiSang-In ChoSang-Sung ChoiKwang-Roh 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错误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中。