专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08174328B2 Dual-band wideband local oscillation signal generator 失效
标题翻译：双频宽带本地振荡信号发生器
公开(公告)号：US08174328B2
公开(公告)日：2012-05-08
申请号：US12860530
申请日：2010-08-20
申请人： Bong-Hyuk Park , Kwang-Chun Lee , Hyun-Kyu Chung
发明人： Bong-Hyuk Park , Kwang-Chun Lee , Hyun-Kyu Chung
IPC分类号： H03B21/01 , H03B21/02 , H03B21/04 , H03B27/00 , H04B1/26 , H04B1/28
CPC分类号： H03L7/099
摘要： A dual-band wideband local oscillation signal generator includes an oscillation unit, a division unit, a poly phase filter (PPF), a switch unit, and a single side band (SSB) mixer. The oscillation unit is configured to generate a positive in-phase (IP) signal, a negative in-phase (IN) signal, a negative quadrature-phase (QN) signal, and a positive quadrature-phase (QP) signal. The division unit is configured to divide frequencies of the IP signal and the IN signal and generate an RF signal. The PPF is configured to receive the IP signal and the IN signals inputted to the division unit, and generate an LO IP signal, an LO IN signal, an LO QP signal, and an LO QN signal. The switch unit is configured to receive the generated LO signals and select a high band frequency signal or a low band frequency signal.
摘要翻译：双频宽带本地振荡信号发生器包括振荡单元，分频单元，多相滤波器（PPF），开关单元和单边带（SSB）混频器。振荡单元被配置为产生正同相（IP）信号，负同相（IN）信号，负正交相位（QN）信号和正正交相位（QP）信号。分割单元被配置为分配IP信号和IN信号的频率并产生RF信号。 PPF被配置为接收输入到分割单元的IP信号和IN信号，并且生成LO IP信号，LO IN信号，LO QP信号和LO QN信号。开关单元被配置为接收所生成的LO信号并选择高频带信号或低频信号。

2. 发明申请

US20110140746A1 DUAL-BAND WIDEBAND LOCAL OSCILLATION SIGNAL GENERATOR 失效
标题翻译：双频宽带局部振荡信号发生器
公开(公告)号：US20110140746A1
公开(公告)日：2011-06-16
申请号：US12860530
申请日：2010-08-20
申请人： Bong-Hyuk PARK , Kwang-Chun Lee , Hyun-Kyu Chung
发明人： Bong-Hyuk PARK , Kwang-Chun Lee , Hyun-Kyu Chung
IPC分类号： H03L7/08
CPC分类号： H03L7/099
摘要： A dual-band wideband local oscillation signal generator includes an oscillation unit, a division unit, a poly phase filter (PPF), a switch unit, and a single side band (SSB) mixer. The oscillation unit is configured to generate a positive in-phase (IP) signal, a negative in-phase (IN) signal, a negative quadrature-phase (QN) signal, and a positive quadrature-phase (QP) signal. The division unit is configured to divide frequencies of the IP signal and the IN signal and generate an RF signal. The PPF is configured to receive the IP signal and the IN signals inputted to the division unit, and generate an LO IP signal, an LO IN signal, an LO QP signal, and an LO QN signal. The switch unit is configured to receive the generated LO signals and select a high band frequency signal or a low band frequency signal.
摘要翻译：双频宽带本地振荡信号发生器包括振荡单元，分频单元，多相滤波器（PPF），开关单元和单边带（SSB）混频器。振荡单元被配置为产生正同相（IP）信号，负同相（IN）信号，负正交相位（QN）信号和正正交相位（QP）信号。分割单元被配置为分配IP信号和IN信号的频率并产生RF信号。 PPF被配置为接收输入到分割单元的IP信号和IN信号，并且生成LO IP信号，LO IN信号，LO QP信号和LO QN信号。开关单元被配置为接收所生成的LO信号并选择高频带信号或低频信号。

3. 发明授权

US08620375B2 Method and apparatus for supporting discontinuous operation of base station in wireless communication system and control system thereof 有权
标题翻译：支持无线通信系统中基站不连续运行的方法及装置及其控制系统
公开(公告)号：US08620375B2
公开(公告)日：2013-12-31
申请号：US13254772
申请日：2010-03-02
申请人： Tae-Joong Kim , Kwang-Chun Lee , Jae-Heung Kim , Hyun-Kyu Chung
发明人： Tae-Joong Kim , Kwang-Chun Lee , Jae-Heung Kim , Hyun-Kyu Chung
IPC分类号： H04B7/00
CPC分类号： H04W52/0206 , H04W84/045 , Y02D70/1244 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/24 , Y02D70/25
摘要： An operation control method in a base station of a wireless communication system includes: checking whether or not an allowed mobile station exists in coverage of the base station and overall coverage of base stations adjacent to the base station; and controlling the base station to perform transmission/reception at a predetermined period through a first discontinuous operation, when the allowed mobile station does not exist in the coverage of the base station and the overall coverage of the adjacent base stations.
摘要翻译：无线通信系统的基站中的操作控制方法包括：检查所允许的移动台是否存在于所述基站的覆盖范围内以及与所述基站相邻的基站的全面覆盖; 并且当允许的移动台不存在于基站的覆盖范围内并且相邻基站的总体覆盖范围时，通过第一不连续操作来控制基站在预定周期进行发送/接收。

4. 发明申请

US20070081608A1 Method for increasing accuracy for estimating MIMO channel 审中-公开
标题翻译：提高MIMO信道估计精度的方法
公开(公告)号：US20070081608A1
公开(公告)日：2007-04-12
申请号：US11517128
申请日：2006-09-07
申请人： Hong-Sup Lee , Hyun-Kyu Chung , Kwang-Chun Lee
发明人： Hong-Sup Lee , Hyun-Kyu Chung , Kwang-Chun Lee
IPC分类号： H04L1/02 , H04L27/06
CPC分类号： H04L25/0208 , H04B1/7115 , H04L1/06 , H04L25/0224 , H04L25/0248
摘要： The present invention relates to a method for increasing accuracy for estimating a multiple input multiple output (MIMO) channel. In the method, a maximum delay spread of a channel is estimated by using a Gold code or a Kasami code, a loosely-synchronous (LS) code having an appropriate interference free window (IFW) is selected, and the MIMO channel without any interference is accurately estimated.
摘要翻译：本发明涉及一种用于提高估计多输入多输出（MIMO）信道的精度的方法。在该方法中，通过使用Gold码或Kasami码来估计信道的最大延迟扩展，选择具有适当的无干扰窗口（IFW）的松散同步（LS）码，并且没有任何干扰的MIMO信道准确估计。

5. 发明申请

US20060089109A1 Transmitting apparatus of communication system 失效
标题翻译：通讯系统传输装置
公开(公告)号：US20060089109A1
公开(公告)日：2006-04-27
申请号：US11255700
申请日：2005-10-21
申请人： Hong-Sup Lee , Hyun-Kyu Chung , Kwang-Chun Lee
发明人： Hong-Sup Lee , Hyun-Kyu Chung , Kwang-Chun Lee
IPC分类号： H04B1/04
CPC分类号： H04L25/0288 , H04B17/21
摘要： A transmitting apparatus according to the present invention includes a prefilter for compensating a previously measured estimated impulse response of a communication system by assuming a communication system in which the transmitting apparatus and the receiving apparatus are directly connected. The prefilter included in the transmitting apparatus compensates an original characteristic of a communication system. Accordingly, it enables an accurate channel measurement of a receiving apparatus without any increase of calculation.
摘要翻译：根据本发明的发送装置包括：预滤波器，用于通过假定发送装置和接收装置直接连接的通信系统来补偿通信系统的先前测量的估计的脉冲响应。包含在发送装置中的预滤波器补偿通信系统的原始特性。因此，它能够在不增加计算的情况下实现对接收装置的精确的信道测量。

6. 发明授权

US08233845B2 Method for measuring variable bandwidth wireless channel and transmitter and receiver therefor 有权
标题翻译：用于测量可变带宽无线信道及其发射机和接收机的方法
公开(公告)号：US08233845B2
公开(公告)日：2012-07-31
申请号：US13344029
申请日：2012-01-05
申请人： Sung-Jun Lee , Heon-Kook Kwon , Myung-Don Kim , Hyun-Kyu Chung , Kwang-Chun Lee
发明人： Sung-Jun Lee , Heon-Kook Kwon , Myung-Don Kim , Hyun-Kyu Chung , Kwang-Chun Lee
IPC分类号： H04B17/00
CPC分类号： H04L1/20
摘要： Provided are a method for measuring a variable bandwidth wireless channel, and a transmitter and a receiver therefor. The transmitter, includes: a pre-processing unit for performing variable over-sampling and band-limited filtering on an original sequence for measuring the wireless channel according to a pre-determined digital-to-analog (D/A) operation speed and measurement bandwidth, and creating and storing a probing sequence whose frequency is up-converted into a fixed transmitting intermediate frequency; and a real-time processing unit for transmitting a probing signal that the stored probing sequence is converted according to the D/A operation speed to the wireless channel.
摘要翻译：提供了一种用于测量可变带宽无线信道的方法，以及用于其的发射机和接收机。发射机包括：预处理单元，用于根据预定的数模（D / A）操作速度和测量对原始序列进行可变过采样和带限滤波，以测量无线信道带宽，以及创建和存储其频率被上变频成固定发射中频的探测序列; 以及实时处理单元，用于将存储的探测序列根据D / A操作速度转换的探测信号发送到无线信道。

7. 发明申请

US20110312370A1 METHOD AND APPARATUS FOR SUPPORTING DISCONTINUOUS OPERATION OF BASE STATION IN WIRELESS COMMUNICATION SYSTEM AND CONTROL SYSTEM THEREOF 有权
标题翻译：支持无线通信系统中基站不间断运行的方法与装置及其控制系统
公开(公告)号：US20110312370A1
公开(公告)日：2011-12-22
申请号：US13254772
申请日：2010-03-02
申请人： Tae-Joong Kim , Kwang-Chun Lee , Jae-Heung Kim , Hyun-Kyu Chung
发明人： Tae-Joong Kim , Kwang-Chun Lee , Jae-Heung Kim , Hyun-Kyu Chung
IPC分类号： H04W36/00
CPC分类号： H04W52/0206 , H04W84/045 , Y02D70/1244 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/24 , Y02D70/25
摘要： An operation control method in a base station of a wireless communication system includes: checking whether or not an allowed mobile station exists in coverage of the base station and overall coverage of base stations adjacent to the base station; and controlling the base station to perform transmission/reception at a predetermined period through a first discontinuous operation, when the allowed mobile station does not exist in the coverage of the base station and the overall coverage of the adjacent base stations.
摘要翻译：无线通信系统的基站中的操作控制方法包括：检查所允许的移动台是否存在于所述基站的覆盖范围内以及与所述基站相邻的基站的全面覆盖; 并且当允许的移动台不存在于基站的覆盖范围内并且相邻基站的总体覆盖范围时，通过第一不连续操作来控制基站在预定周期进行发送/接收。

8. 发明授权

US07974180B2 Transmitting/receiving apparatus of wideband wireless channel apparatus using multiple carriers 失效
标题翻译：使用多个载波的宽带无线信道装置的发射/接收装置
公开(公告)号：US07974180B2
公开(公告)日：2011-07-05
申请号：US12096450
申请日：2006-12-05
申请人： Hyun-Kyu Chung , Kwang-Chun Lee
发明人： Hyun-Kyu Chung , Kwang-Chun Lee
IPC分类号： H04J11/00
CPC分类号： H04L25/022 , H04L25/025
摘要： The present invention relates to transmitting/receiving apparatuses of a wideband radio channel measuring device using a multi-carrier. The wideband radio channel measuring device using the multi-carrier may measure radio channel characteristics at a frequency domain. Since the radio channel is measured at the frequency domain by the wideband radio channel measuring device using the multi-carrier, the channel characteristics may be simultaneously measured while maintaining a maximum Doppler measurement frequency at a predetermined level regardless of increase of the number of transmitting and receiving antennas, in an MIMO configuration.
摘要翻译：本发明涉及使用多载波的宽带无线电信道测量装置的发射/接收装置。使用多载波的宽带无线电信道测量装置可以测量频域的无线电信道特性。由于通过使用多载波的宽带无线电信道测量装置在频域处测量无线电信道，所以可以同时测量信道特性，同时将最大多普勒测量频率保持在预定电平，而不管发射和发射次数的增加，接收天线。

9. 发明授权

US08477866B2 Calibration method for Tx/Rx path characteristic of channel sounder 有权
标题翻译：通道发声器的Tx / Rx路径特性的校准方法
公开(公告)号：US08477866B2
公开(公告)日：2013-07-02
申请号：US12973231
申请日：2010-12-20
申请人： Sung-Jun Lee , Kwang-Chun Lee , Hyun-Kyu Chung
发明人： Sung-Jun Lee , Kwang-Chun Lee , Hyun-Kyu Chung
IPC分类号： H04L1/02 , H04B7/02
CPC分类号： H04B1/7113 , H04B17/14
摘要： The method includes performing a wired back-to-back test by forming M wired paths connecting one of the N transmission antennas with the M reception antennas through M cables, separating ith digital data corresponding to an ith receiver wired path from the plurality of digital data stored in the receiver wherein i is a natural number greater than 1 and smaller than M, extracting a time delay by decimating the separated ith digital data and performing sliding correlation on the decimated data, and extracting attenuation and phase characteristics of the ith receiver wired path by extracting samples after the time delay among the decimated samples.
摘要翻译：该方法包括：通过M个电缆形成连接N个发送天线中的一个与M个接收天线的M个有线路径进行有线背靠背测试，该多个数字数据与第i个接收机有线路径相对应的数字数据存储在接收机中，其中i是大于1且小于M的自然数，通过抽取分离的第i个数字数据并对抽取的数据执行滑动相关提取时间延迟，并且提取第i个接收机有线路径的衰减和相位特性通过在抽取的样本之间的时间延迟之后提取样本。

10. 发明授权

US07911986B2 Apparatus and method for measuring bi-directional radio channel having multiple antenna 有权
标题翻译：用于测量具有多个天线的双向无线电信道的装置和方法
公开(公告)号：US07911986B2
公开(公告)日：2011-03-22
申请号：US12514831
申请日：2007-10-30
申请人： Heon-Kook Kwon , Kwang-Chun Lee , Hyun-Kyu Chung
发明人： Heon-Kook Kwon , Kwang-Chun Lee , Hyun-Kyu Chung
IPC分类号： H04J3/00 , H04J1/00
CPC分类号： H04B17/309 , H04B7/0691 , H04B7/0874
摘要： An apparatus and method for measuring bi-directional radio channel with multiple antenna are provided. The apparatus includes a transmitter for amplifying a signal that is frequency-up converted to radio frequency and removing a signal of other frequency band, a high power multiplexing switch for sequentially transferring transmitting signals from the transmitter to a corresponding circulator, a plurality of circulators for transferring the transmitting signals from the high power multiplexing switch to a corresponding antenna among multiple antennas, and transferring a receiving signal from a corresponding antenna, a low loss multiplexing switch for receiving the receiving signal from the corresponding circulator, and sequentially transferring the receiving signal; and a receiver for receiving the receiving signal from the low loss multiplexing switch, removing undesired frequency components from the receiving signal except a desired frequency band and low-noise amplifying the desired frequency band of the receiving signal.
摘要翻译：提供了一种用于测量具有多个天线的双向无线电信道的装置和方法。该装置包括用于放大频率转换为射频的信号并去除其他频带的信号的发射机，用于将发射信号从发射机顺序地传送到相应的循环器的高功率复用开关，多个循环器将来自高功率复用交换机的发送信号从多个天线传送到对应的天线，并从相应的天线传送接收信号，低损耗多路复用开关，用于从相应的循环器接收接收信号，并顺序传送接收信号; 以及接收器，用于从低损耗多路复用开关接收接收信号，除去期望频带以外的接收信号中的不需要的频率分量，以及放大接收信号的期望频带的低噪声。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式