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：US20090161610A1

公开(公告)日：2009-06-25

申请号：US12089948

申请日：2006-10-13

申请人： Bub Joo Kang ,  Myung Sun Song ,  Chang Joo Kim

发明人： Bub Joo Kang ,  Myung Sun Song ,  Chang Joo Kim

IPC分类号： H04W72/00

CPC分类号： H04W16/14 ,  H04B1/715 ,  H04W16/10 ,  H04W72/042 ,  H04W72/06 ,  H04W72/085 ,  H04W72/10

摘要： Provided is a method of assigning a frequency channel using efficient spectrum sensing in a multiple Frequency Assignment (FA) system. The method includes a channel sensing process, wherein abase station (BS) of a secondary user classifies multiple frequency channels licensed to a primary user into a plurality of channel states by changing a sensing period according to the types of classified channel state sets, and manages the sensed channel states as frequency channel state set information; a channel state set broadcasting process, wherein the BS transmits the frequency channel state set information manage d in the channel sensing process to secondary user terminals using a broadcast message; and a channel assigning process, wherein if the BS receives a channel assignment request message from a new secondary user terminal which has received the broadcast message, the BS assigns an unused frequency channel from among frequency channels licensed to the primary user to the new secondary user terminal using the frequency channel state set information. Accordingly, a frequency channel can be assigned to a secondary user requesting channel assignment using frequency channel state set information without a primary user experiencing interference noise.

摘要翻译： 提供了一种在多频分配（FA）系统中使用有效频谱感测来分配频道的方法。 该方法包括信道感测过程，其中次要用户的基站（BS）根据分类信道状态集的类型改变感测周期，将许可给主用户的多个频率信道分类为多个信道状态，并且管理 感测信道状态为频道状态集信息; 信道状态集广播处理，其中，所述BS使用广播消息将频道感测处理中的频道状态集信息管理d发送给次用户终端; 以及信道分配处理，其中，如果所述BS从已经接收到所述广播消息的新的辅助用户终端接收到信道分配请求消息，则所述BS将许可给所述主用户的频率信道中的未使用的频率信道分配给所述新的辅助用户 终端使用频道状态集信息。 因此，频率信道可以被分配给辅助用户使用频道状态集信息来请求信道分配，而不会使主用户遇到干扰噪声。

公开(公告)号：US09332440B2

公开(公告)日：2016-05-03

申请号：US13584049

申请日：2012-08-13

申请人： Bub Joo Kang ,  Myung Sun Song ,  Chang Joo Kim

发明人： Bub Joo Kang ,  Myung Sun Song ,  Chang Joo Kim

IPC分类号： H04W16/14 ,  H04B1/715 ,  H04W72/06 ,  H04W72/10 ,  H04W16/10 ,  H04W72/04 ,  H04W72/08

CPC分类号： H04W16/14 ,  H04B1/715 ,  H04W16/10 ,  H04W72/042 ,  H04W72/06 ,  H04W72/085 ,  H04W72/10

摘要： A method of assigning a frequency channel using efficient spectrum sensing in a multiple Frequency Assignment system includes a channel sensing process, wherein a base station of a secondary user classifies multiple frequency channels licensed to a primary user into a plurality of channel state sets according to usage states, periodically senses channel states by changing a sensing period according to the types of classified channel state sets, and manages the sensed channel states as frequency channel state set information; a channel state set broadcasting process; and a channel assigning process. Accordingly, a frequency channel can be assigned to a secondary user requesting channel assignment using frequency channel state set information without a primary user experiencing interference noise.

摘要翻译： 一种在多频分配系统中使用有效的频谱感测来分配频道的方法包括信道感测过程，其中次用户的基站根据使用将授权给主用户的多个频率分组为多个信道状态集合 状态通过根据分类信道状态集的类型改变感测周期来周期性地感测信道状态，并且将所感测的信道状态管理为频道状态集信息; 信道状态集广播过程; 和频道分配过程。 因此，频率信道可以被分配给辅助用户使用频道状态集信息来请求信道分配，而不会使主用户遇到干扰噪声。

公开(公告)号：US06182260B2

公开(公告)日：2001-01-30

申请号：US09094605

申请日：1998-06-15

申请人： Bub Joo Kang ,  Chae Min Park ,  Jae Ryong Shim ,  Eung Bae Kim ,  Hyun Seo Oh

发明人： Bub Joo Kang ,  Chae Min Park ,  Jae Ryong Shim ,  Eung Bae Kim ,  Hyun Seo Oh

IPC分类号： H03M1329

CPC分类号： H03M13/6356 ,  H03M13/1515 ,  H03M13/158 ,  H03M13/2903 ,  H03M13/2936

摘要： Generally, Reed-Solomon encoding process in the conventional communication system is executed by a Reed-Solomon encoder having different code rates for different data transmission rates. The present invention does not use a Reed-Solomon encoder having different coding rates, but instead uses a Reed-Solomon encoder having the same code rate regardless of data transmission rate. Accordingly, the present invention has the following effects. The present invention maintains same communication quality regarding data services having each different data transmission rate, and can use a single Reed-Solomon encoder.

摘要翻译： 通常，常规通信系统中的里德 - 所罗门编码过程由用于不同数据传输速率的具有不同码率的里德 - 所罗门编码器执行。 本发明不使用具有不同编码率的Reed-Solomon编码器，而是使用具有相同码率的Reed-Solomon编码器，而不管数据传输速率如何。 因此，本发明具有以下效果。 本发明对于具有每个不同数据传输速率的数据业务保持相同的通信质量，并且可以使用单个Reed-Solomon编码器。

公开(公告)号：US08279767B2

公开(公告)日：2012-10-02

申请号：US12089948

申请日：2006-10-13

申请人： Bub Joo Kang ,  Myung Sun Song ,  Chang Joo Kim

发明人： Bub Joo Kang ,  Myung Sun Song ,  Chang Joo Kim

IPC分类号： H04L12/26

CPC分类号： H04W16/14 ,  H04B1/715 ,  H04W16/10 ,  H04W72/042 ,  H04W72/06 ,  H04W72/085 ,  H04W72/10

摘要： Provided is a method of assigning a frequency channel using efficient spectrum sensing in a multiple Frequency Assignment (FA) system. The method includes a channel sensing process, wherein a base station (BS) of a secondary user classifies multiple frequency channels licensed to a primary user into a plurality of channel states by changing a sensing period according to the types of classified channel state sets, and manages the sensed channel states as frequency channel state set information; a channel state set broadcasting process, wherein the BS transmits the frequency channel state set information managed in the channel sensing process to secondary user terminals using a broadcast message; and a channel assigning process, wherein if the BS receives a channel assignment request message from a new secondary user terminal which has received the broadcast message, the BS assigns an unused frequency channel from among frequency channels licensed to the primary user to the new secondary user terminal using the frequency channel state set information. Accordingly, a frequency channel can be assigned to a secondary user requesting channel assignment using frequency channel state set information without a primary user experiencing interference noise.

摘要翻译： 提供了一种在多频分配（FA）系统中使用有效频谱感测来分配频道的方法。 该方法包括信道感测过程，其中辅助用户的基站（BS）通过根据分类的信道状态集合的类型改变感测周期来将许可给主用户的多个频率信道分类为多个信道状态，以及 将所感测的信道状态管理为频道状态集信息; 信道状态集合广播处理，其中，所述BS使用广播消息将在信道感测处理中管理的频道状态集信息发送给次用户终端; 以及信道分配处理，其中，如果所述BS从已经接收到所述广播消息的新的辅助用户终端接收到信道分配请求消息，则所述BS将许可给所述主用户的频率信道中的未使用的频率信道分配给所述新的辅助用户 终端使用频道状态集信息。 因此，频率信道可以被分配给辅助用户使用频道状态集信息来请求信道分配，而不会使主用户遇到干扰噪声。