公开(公告)号：US07623562B2

公开(公告)日：2009-11-24

申请号：US11065570

申请日：2005-02-25

申请人： Kyu Min Kang ,  Bub Joo Kang ,  Sangsung Choi ,  Kwang Roh Park ,  Chae Kyu Kim ,  Jeong Goo Lee

发明人： Kyu Min Kang ,  Bub Joo Kang ,  Sangsung Choi ,  Kwang Roh Park ,  Chae Kyu Kim ,  Jeong Goo Lee

IPC分类号： H04B1/69

CPC分类号： H04B1/71637 ,  H04B1/7075 ,  H04B1/7183

摘要： Provided are an initial synchronization acquiring device and method in a parallel processed DS-CDMA UWB system and a DS-CDMA UWB system's receiver using the same. The initial synchronization acquiring device is constructed to include a correlator for correlating input signals and outputting correlation result values and an initial synchronizer for tuning initial symbol synchronization and frame synchronization by using the correlation result values received from the correlator and then storing combining mark values and a synchronization position value in a register, thereby making it possible to greatly decrease a system's complexity, compared to the existing method of separately designing respective modules for acquiring packet synchronization and symbol synchronization in the existing CDMA system. Also, the initial synchronization acquiring device and method additionally compensates a synchronization error caused by a frequency offset generated between clocks used by a transmitter and a receiver and thereby can be efficiently used in the high-speed and parallel-processed DS-CDMA UWB system.

摘要翻译： 提供了一种并行处理的DS-CDMA UWB系统中的初始同步获取装置和方法，以及使用其的DS-CDMA UWB系统的接收机。 初始同步获取装置被构造为包括用于使输入信号相关并输出相关结果值的相关器和用于通过使用从相关器接收的相关结果值来调整初始符号同步和帧同步的初始同步器，然后存储组合标记值和 与现有CDMA系统中分别设计用于获取分组同步和符号同步的各个模块的现有方法相比，寄存器中的同步位置值可以大大降低系统的复杂度。 此外，初始同步获取装置和方法还补偿由发射机和接收机使用的时钟之间产生的频率偏移引起的同步误差，从而可以在高速和并行处理的DS-CDMA UWB系统中有效地使用。

公开(公告)号：US07436915B2

公开(公告)日：2008-10-14

申请号：US11137468

申请日：2005-05-26

申请人： Kyu Min Kang ,  Bub Joo Kang ,  Sangsung Choi ,  Kwang Roh Park

发明人： Kyu Min Kang ,  Bub Joo Kang ,  Sangsung Choi ,  Kwang Roh Park

IPC分类号： H04B1/10

CPC分类号： H04B1/7176 ,  H04B1/7174 ,  H04B2201/70707

摘要： An FIR filter of a DS-CDMA UWB modem transmitter and a control method thereof are disclosed. The FIR filter includes an LUT control device for outputting a resultant value of “0” to all adders if data values corresponding to upper three chips H2, M2 and L2 and lower three chips H, M and L are “000000”, and discriminating which group between a first group and a second group the upper/lower data values belong to if the upper/lower data values are not“000000”. The LUT control device provides upper or lower LUT values to the adders using the upper or lower LUT values as they are, or converts the upper or lower LUT values into 2's complements and provides the converted values to the adders according to the discriminated first or second group.

摘要翻译： 公开了DS-CDMA UWB调制解调发射机的FIR滤波器及其控制方法。 如果对应于上三个码片H 2，M 2和L 2以及较低的三个码片H，M和L的数据值为“000000”，则FIR滤波器包括LUT控制装置，用于向所有加法器输出结果值“0” 并且如果所述上/下数据值不是“000000”，则鉴别所述上/下数据值属于第一组和第二组之间的组。 LUT控制装置使用上下LUT值向加法器提供上或下LUT值，或者将上或下LUT值转换为2的补码，并根据所识别的第一或第二值向加法器提供转换的值 组。

公开(公告)号：USRE44413E1

公开(公告)日：2013-08-06

申请号：US12904718

申请日：2010-10-14

申请人： Kyu Min Kang ,  Bub Joo Kang ,  Sangsung Choi ,  Kwang Roh Park

发明人： Kyu Min Kang ,  Bub Joo Kang ,  Sangsung Choi ,  Kwang Roh Park

IPC分类号： H04B1/10

CPC分类号： H04B1/7176 ,  H04B1/7174 ,  H04B2201/70707

摘要： An FIR filter of a DS-CDMA UWB modem transmitter and a control method thereof are disclosed. The FIR filter includes an LUT control device for outputting a resultant value of “0” to all adders if data values corresponding to upper three chips H2, M2 and L2 and lower three chips H, M and L are “000000”, and discriminating which group between a first group and a second group the upper/lower data values belong to if the upper/lower data values are not“000000”. The LUT control device provides upper or lower LUT values to the adders using the upper or lower LUT values as they are, or converts the upper or lower LUT values into 2's complements and provides the converted values to the adders according to the discriminated first or second group.

摘要翻译： 公开了DS-CDMA UWB调制解调发射机的FIR滤波器及其控制方法。 FIR滤波器包括LUT控制装置，用于如果对应于上三个码片H2，M2和L2以及较低三个码片H，M和L的数据值为“000000”，则将所得到的值“0”输出到所有加法器，并且鉴别哪个 如果上/下数据值不是“000000”，则在第一组和第二组之间组合上/下数据值。 LUT控制装置使用上下LUT值向加法器提供上或下LUT值，或者将上或下LUT值转换为2的补码，并根据所识别的第一或第二值向加法器提供转换的值 组。

公开(公告)号：US07382822B2

公开(公告)日：2008-06-03

申请号：US11063583

申请日：2005-02-24

申请人： Bub Joo Kang ,  Kyu Min Kang ,  Sangsung Choi ,  Kwang Roh Park

发明人： Bub Joo Kang ,  Kyu Min Kang ,  Sangsung Choi ,  Kwang Roh Park

IPC分类号： H04B1/00

CPC分类号： H04B1/70735 ,  H04B1/7077 ,  H04B1/7183

摘要： There is provided a code acquisition device and method using a two-step search process in a DS-CDMA UWB modem. The device includes: an I/Q channel symbol generating unit for, generating a plurality (i) of nth I/Q channel symbols in a first search process and generating a plurality of nth I/Q channel symbols in a second search process; a spread code selecting unit for receiving the plurality of nth I/Q channel symbols in the first search process; an NNC2NS tap I/Q channel symbol matched filter unit for, in the second search process, receiving the plurality (i) of nth I/Q channel symbols; a switching unit for changing to a closed state of the second search process; and a super frame and symbol boundary time deciding unit for deciding a super frame time and a symbol boundary time.

摘要翻译： 提供了在DS-CDMA UWB调制解调器中使用两步搜索处理的代码获取装置和方法。 该装置包括：I / Q信道符号生成单元，用于在第一搜索处理中生成第n个第I / Q个信道符号的多个（i），并产生多个第n个 在第二搜索过程中的I / Q通道符号; 扩展码选择单元，用于在第一搜索处理中接收多个第n个I / Q信道符号; 用于在第二搜索过程中，接收多个（i）个第n个/第N个N / N个抽头I / Q通道符号匹配滤波器单元， SUB> I / Q通道符号; 用于切换到第二搜索处理的关闭状态的切换单元; 以及用于决定超帧时间和符号边界时间的超帧和符号边界时间决定单元。

公开(公告)号：US20130223575A1

公开(公告)日：2013-08-29

申请号：US13884175

申请日：2011-10-25

申请人： Sang In Cho ,  Kyu Min Kang

发明人： Sang In Cho ,  Kyu Min Kang

IPC分类号： H04L27/26

CPC分类号： H04L27/265 ,  H04L27/0006 ,  H04L27/2647

摘要： Provided is a frequency sensing method and apparatus in an orthogonal frequency division multiplexing (OFDM) system. Provided is a method of sensing a frequency of a received signal that is received from an outside in order to perform one of a plurality of radio communications. An OFDM apparatus may need to inspect a required frequency band before or after performing one of the plurality of radio communications, and to determine whether the frequency band is being used by another radio communication.

摘要翻译： 提供了一种正交频分复用（OFDM）系统中的频率感测方法和装置。 提供了一种感测从外部接收的接收信号的频率以便执行多个无线电通信之一的方法。 OFDM装置可能需要在执行多个无线电通信之一之前或之后检查所需的频带，并且确定频带是否被另一个无线电通信使用。

公开(公告)号：US09191259B2

公开(公告)日：2015-11-17

申请号：US13884175

申请日：2011-10-25

申请人： Sang In Cho ,  Kyu Min Kang

发明人： Sang In Cho ,  Kyu Min Kang

IPC分类号： H04L27/06 ,  H04L27/26 ,  H04L27/00

CPC分类号： H04L27/265 ,  H04L27/0006 ,  H04L27/2647

摘要： Provided is a frequency sensing method and apparatus in an orthogonal frequency division multiplexing (OFDM) system. Provided is a method of sensing a frequency of a received signal that is received from an outside in order to perform one of a plurality of radio communications. An OFDM apparatus may need to inspect a required frequency band before or after performing one of the plurality of radio communications, and to determine whether the frequency band is being used by another radio communication.

摘要翻译： 提供了一种正交频分复用（OFDM）系统中的频率感测方法和装置。 提供了一种感测从外部接收的接收信号的频率以便执行多个无线电通信之一的方法。 OFDM装置可能需要在执行多个无线电通信之一之前或之后检查所需的频带，并且确定频带是否被另一个无线电通信使用。