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1. 发明申请

US20100202359A1 RADAR DETECTION AND DYNAMIC FREQUENCY SELECTION 审中-公开
标题翻译：雷达检测和动态频率选择
公开(公告)号：US20100202359A1
公开(公告)日：2010-08-12
申请号：US12761937
申请日：2010-04-16
申请人： Bhaskar V. Nallapureddy , Tsunglun Yu , Yungping Hsu , Sek Kin Neng
发明人： Bhaskar V. Nallapureddy , Tsunglun Yu , Yungping Hsu , Sek Kin Neng
IPC分类号： H04W40/00
CPC分类号： G01S7/021 , G01S7/023
摘要： A wireless network device includes a correlation module, an automatic gain control module, and a control module. The correlation module correlates a predetermined portion of a radio frequency (RF) signal and generates a correlation signal based thereon. The automatic gain control (AGC) module generates a gain control signal based on said RF signal. The control module selectively determines whether said RF signal is a radar signal based on said correlation signal and said gain control signal.
摘要翻译：无线网络设备包括相关模块，自动增益控制模块和控制模块。相关模块将射频（RF）信号的预定部分相关，并基于此产生相关信号。自动增益控制（AGC）模块基于所述RF信号产生增益控制信号。所述控制模块基于所述相关信号和所述增益控制信号选择性地确定所述RF信号是否为雷达信号。

2. 发明授权

US07702044B2 Radar detection and dynamic frequency selection 有权
标题翻译：雷达检测和动态频率选择
公开(公告)号：US07702044B2
公开(公告)日：2010-04-20
申请号：US11410938
申请日：2006-04-25
申请人： Bhaskar V. Nallapureddy , Tsunglun Yu , Yungping Hsu , Sek Kin Neng
发明人： Bhaskar V. Nallapureddy , Tsunglun Yu , Yungping Hsu , Sek Kin Neng
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： G01S7/021 , G01S7/023
摘要： A wireless network device includes a correlation module, an automatic gain control module, and a control module. The correlation module correlates a predetermined portion of a radio frequency (RF) signal and generates a correlation signal based thereon. The automatic gain control (AGC) module generates a gain control signal based on said RF signal. The control module selectively determines whether said RF signal is a radar signal based on said correlation signal and said gain control signal.
摘要翻译：无线网络设备包括相关模块，自动增益控制模块和控制模块。相关模块将射频（RF）信号的预定部分相关，并基于此产生相关信号。自动增益控制（AGC）模块基于所述RF信号产生增益控制信号。所述控制模块基于所述相关信号和所述增益控制信号选择性地确定所述RF信号是否为雷达信号。

3. 发明授权

US09366750B2 Radar detection and dynamic frequency selection 有权
标题翻译：雷达检测和动态频率选择
公开(公告)号：US09366750B2
公开(公告)日：2016-06-14
申请号：US12761937
申请日：2010-04-16
申请人： Bhaskar V. Nallapureddy , Tsunglun Yu , Yungping Hsu , Sek Kin Neng
发明人： Bhaskar V. Nallapureddy , Tsunglun Yu , Yungping Hsu , Sek Kin Neng
IPC分类号： H04L27/06 , G01S7/02
CPC分类号： G01S7/021 , G01S7/023
摘要： A method and apparatus for: receiving a radio frequency (RF) signal on a first channel; determining a radio signal strength of the RF signal; performing a correlation of the RF signal with a predetermined sequence of a wireless data packet to determine whether the RF signal contains the predetermined sequence; in response to the RF signal not containing the predetermined sequence, generating an indication that the RF signal is not a wireless data packet; and determining whether the radio signal strength of the RF signal exceeds a predetermined threshold. In response to i) the radio signal strength exceeding the predetermined threshold and ii) the indication being generated: measuring a parameter associated with the RF signal; determining whether the RF signal is a radar signal based on the parameter; and changing from the first channel in response to the RF signal being determined to be a radar signal.
摘要翻译：一种用于在第一信道上接收射频（RF）信号的方法和设备; 确定RF信号的无线电信号强度; 执行所述RF信号与无线数据分组的预定序列的相关性，以确定所述RF信号是否包含所述预定序列; 响应于不包含预定序列的RF信号，产生RF信号不是无线数据分组的指示; 以及确定所述RF信号的无线电信号强度是否超过预定阈值。响应于i）所述无线电信号强度超过所述预定阈值，以及ii）正在产生的指示：测量与所述RF信号相关联的参数; 基于所述参数确定所述RF信号是否为雷达信号; 并且响应于RF信号被确定为雷达信号，从第一信道改变。

4. 发明申请

US20100264902A1 DETECTION AND ESTIMATION OF RADIO FREQUENCY VARIATIONS 有权
标题翻译：无线电频率变化的检测和估计
公开(公告)号：US20100264902A1
公开(公告)日：2010-10-21
申请号：US12825775
申请日：2010-06-29
申请人： Bhaskar V. Nallapureddy , Songping Wu , Tsunglun Yu , Hui-Ling Lou
发明人： Bhaskar V. Nallapureddy , Songping Wu , Tsunglun Yu , Hui-Ling Lou
IPC分类号： G01R23/16
CPC分类号： G01S7/021 , G01R23/10
摘要： A system includes a sampling module, a counter module, and a frequency characteristic module. The sampling module samples radio frequency (RF) signals on a first channel for a first predetermined period and a second predetermined period that is subsequent to the first predetermined period. The counter module increments first and second counts when the samples collected during the first and second predetermined periods reverse polarity, respectively. The frequency characteristic module determines a frequency of the RF signal based on at least one of the first and the second counts and determines frequency variation of the RF signal based on the first and second counts.
摘要翻译：系统包括采样模块，计数器模块和频率特征模块。采样模块在第一通道上采样第一预定周期的射频（RF）信号和在第一预定周期之后的第二预定周期。当在第一和第二预定时段期间收集的样本分别反向极性时，计数器模块递增第一和第二计数。频率特性模块基于第一和第二计数中的至少一个来确定RF信号的频率，并且基于第一和第二计数确定RF信号的频率变化。

5. 发明授权

US08346174B2 Detection and estimation of radio frequency variations 有权
标题翻译：射频变化的检测和估计
公开(公告)号：US08346174B2
公开(公告)日：2013-01-01
申请号：US12825775
申请日：2010-06-29
申请人： Bhaskar V. Nallapureddy , Songping Wu , Tsunglun Yu , Hui-Ling Lou
发明人： Bhaskar V. Nallapureddy , Songping Wu , Tsunglun Yu , Hui-Ling Lou
IPC分类号： H04B7/00
CPC分类号： G01S7/021 , G01R23/10
摘要： A system including a sampling module that generates samples of RF signals on a first channel during first, second, and third periods, which do not overlap. A difference module determines a first difference between i) a first count of polarity reversals during the first period and ii) a second count of polarity reversals during the second period; a second difference between i) the second count and ii) a third count of polarity reversals during the third period; and a third difference between the first and second differences. A third module determines a frequency of the RF signals based on at least one of the first and second counts, determines a frequency variation of the RF signals based on the first and second counts, and identifies a radar type of the RF signals based on at least one of the third difference and the frequency variation.
摘要翻译：一种系统，包括采样模块，其在第一，第二和第三周期期间在第一通道上产生不重叠的RF信号样本。差分模块确定i）在第一周期期间的极性反转的第一计数和ii）在第二周期期间的极性反转的第二计数的第一差异; i）第二计数和ii）在第三周期期间极性反转的第三计数的第二个差异; 以及第一和第二差异之间的第三个差异。第三模块基于第一计数和第二计数中的至少一个来确定RF信号的频率，基于第一和第二计数确定RF信号的频率变化，并且基于at来识别RF信号的雷达类型第三个差异和频率变化中的至少一个。

6. 发明授权

US07747222B2 Detection and estimation of radio frequency variations 有权
标题翻译：射频变化的检测和估计
公开(公告)号：US07747222B2
公开(公告)日：2010-06-29
申请号：US11493473
申请日：2006-07-26
申请人： Bhaskar V. Nallapureddy , Songping Wu , Tsunglun Yu , Hui-Ling Lou
发明人： Bhaskar V. Nallapureddy , Songping Wu , Tsunglun Yu , Hui-Ling Lou
IPC分类号： H04B7/00
CPC分类号： G01S7/021 , G01R23/10
摘要： A system includes a sampling module, a counter module, and a frequency characteristic module. The sampling module samples radio frequency (RF) signals on a first channel for a first predetermined period and a second predetermined period that is subsequent to the first predetermined period. The counter module increments first and second counts when the samples collected during the first and second predetermined periods reverse polarity, respectively. The frequency characteristic module determines a frequency of the RF signal based on at least one of the first and the second counts and determines frequency variation of the RF signal based on the first and second counts.
摘要翻译：系统包括采样模块，计数器模块和频率特征模块。采样模块在第一通道上采样第一预定周期的射频（RF）信号和在第一预定周期之后的第二预定周期。当在第一和第二预定时段期间收集的样本分别反向极性时，计数器模块递增第一和第二计数。频率特性模块基于第一和第二计数中的至少一个来确定RF信号的频率，并且基于第一和第二计数确定RF信号的频率变化。

7. 发明申请

US20090262855A1 DATA SYMBOL MAPPING FOR MULTIPLE-INPUT MULTIPLE-OUTPUT HYBRID AUTOMATIC REPEAT REQUEST 有权
标题翻译：用于多输入多输出混合自动重复请求的数据符号映射
公开(公告)号：US20090262855A1
公开(公告)日：2009-10-22
申请号：US12410044
申请日：2009-03-24
申请人： Jungwon Lee , Bhaskar V. Nallapureddy , Hui-Ling Lou
发明人： Jungwon Lee , Bhaskar V. Nallapureddy , Hui-Ling Lou
IPC分类号： H04B7/02 , H04L27/00 , H04L27/28
CPC分类号： H04L1/0009 , H04B7/0669 , H04B7/0689 , H04B7/0697 , H04L1/0625 , H04L1/0668 , H04L1/1816 , H04L1/1845
摘要： A system includes an encoding module, a symbol selection module, a subcarrier selection module, and a mapping module. The encoding module receives symbols for transmission over K subcarriers and T antennas, encodes the symbols using a space time code, and generates space time coded (STC) versions of the symbols, where K and T are integers greater than 1. The symbol selection module selects T adjacent ones of the symbols and selects STC versions of the T adjacent ones of the symbols. The subcarrier selection module selects one of the K subcarriers for transmitting the T adjacent ones of the symbols and the STC versions of the T adjacent ones of the symbols. The mapping module maps the T adjacent ones of the symbols onto the T antennas for transmission over the selected one of the K subcarriers, respectively, and maps the STC versions of the T adjacent ones of the symbols onto the T antennas for transmission over the selected one of the K subcarriers.
摘要翻译：系统包括编码模块，符号选择模块，子载波选择模块和映射模块。编码模块接收用于通过K个子载波和T个天线进行传输的符号，并使用空时码对该符号进行编码，并生成符号的空时编码（STC）版本，其中K和T是大于1的整数。符号选择模块选择T个相邻的符号，并选择T个相邻符号的STC版本。子载波选择模块选择用于发送T个相邻符号的T个子载波之一和T个相邻符号的STC版本。映射模块将T个相邻的符号映射到T个天线上，以便在所选的K个子载波之间分别传输，并将T个相邻的符号的STC版本映射到T个天线上，以便通过所选择的 K个子载波之一。

8. 发明授权

US08279963B2 Data symbol mapping for multiple-input multiple-output hybrid automatic repeat request 有权
标题翻译：用于多输入多输出混合自动重复请求的数据符号映射
公开(公告)号：US08279963B2
公开(公告)日：2012-10-02
申请号：US12410044
申请日：2009-03-24
申请人： Jungwon Lee , Bhaskar V. Nallapureddy , Hui-Ling Lou
发明人： Jungwon Lee , Bhaskar V. Nallapureddy , Hui-Ling Lou
IPC分类号： H04B7/02 , H04L27/00 , H04L27/28
CPC分类号： H04L1/0009 , H04B7/0669 , H04B7/0689 , H04B7/0697 , H04L1/0625 , H04L1/0668 , H04L1/1816 , H04L1/1845
摘要： A system includes an encoding module, a symbol selection module, a subcarrier selection module, and a mapping module. The encoding module receives symbols for transmission over K subcarriers and T antennas, encodes the symbols using a space time code, and generates space time coded (STC) versions of the symbols, where K and T are integers greater than 1. The symbol selection module selects T adjacent ones of the symbols and selects STC versions of the T adjacent ones of the symbols. The subcarrier selection module selects one of the K subcarriers for transmitting the T adjacent ones of the symbols and the STC versions of the T adjacent ones of the symbols. The mapping module maps the T adjacent ones of the symbols onto the T antennas for transmission over the selected one of the K subcarriers, respectively, and maps the STC versions of the T adjacent ones of the symbols onto the T antennas for transmission over the selected one of the K subcarriers.
摘要翻译：系统包括编码模块，符号选择模块，子载波选择模块和映射模块。编码模块接收用于通过K个子载波和T个天线进行传输的符号，并使用空时码对该符号进行编码，并生成符号的空时编码（STC）版本，其中K和T是大于1的整数。符号选择模块选择T个相邻的符号，并选择T个相邻符号的STC版本。子载波选择模块选择用于发送T个相邻符号的T个子载波之一和T个相邻符号的STC版本。映射模块将T个相邻的符号映射到T个天线上，以便在所选的K个子载波之间分别传输，并将T个相邻的符号的STC版本映射到T个天线上，以便通过所选择的 K个子载波之一。

9. 发明授权

US08675783B1 Low complexity distance metrics for maximum likelihood receivers 失效
标题翻译：用于最大似然接收机的低复杂度距离度量
公开(公告)号：US08675783B1
公开(公告)日：2014-03-18
申请号：US13309684
申请日：2011-12-02
申请人： Adina Matache , Leilei Song , Bhaskar V. Nallapureddy , Hui-Ling Lou
发明人： Adina Matache , Leilei Song , Bhaskar V. Nallapureddy , Hui-Ling Lou
IPC分类号： H04L27/06 , H04L27/00
CPC分类号： H04L1/0054 , H03M13/45 , H04L25/03171 , H04L25/03242 , H04L25/03318
摘要： Systems and methods are provided for determining a data value for a bit of interest in a received data signal. A closest 0-bit symbol candidate is selected from a plurality of 0-bit symbol candidates using a symbol selection distance approximation. A closest 1-bit symbol candidate is selected from a plurality of 1-bit symbol candidates using the symbol selection distance approximation. A 0-bit distance between the received data signal and the selected 0-bit symbol candidate is determined, and a 1-bit distance between the received data signal and the selected 1-bit symbol candidate is determined. A log likelihood ratio is calculated for the bit of interest using the determined 0-bit distance and the determined 1-bit distance.
摘要翻译：系统和方法被提供用于确定接收到的数据信号中感兴趣的位的数据值。使用符号选择距离近似从多个0位符号候选中选择最接近的0位符号候选。使用符号选择距离近似，从多个1位符号候选中选择最接近的1位符号候选。确定接收到的数据信号和所选择的0位符号候选之间的0比特距离，并确定接收到的数据信号与所选择的1比特符号候选之间的1比特距离。使用所确定的0比特距离和所确定的1比特距离来计算感兴趣比特的对数似然比。

10. 发明授权

US07834800B1 Systems and methods for detecting radar 有权
标题翻译：检测雷达的系统和方法
公开(公告)号：US07834800B1
公开(公告)日：2010-11-16
申请号：US12623854
申请日：2009-11-23
申请人： Kapil Chhabra , Bhaskar V. Nallapureddy
发明人： Kapil Chhabra , Bhaskar V. Nallapureddy
IPC分类号： G01S7/40
CPC分类号： G01S7/021
摘要： A system includes a storing module configured to receive records. The records include dynamic frequency selection (DFS) information. A data extraction module is configured to extract the DFS information from a first plurality of the records. A control module is configured to determine whether the DFS information in each of the first plurality of records is a radar signal and generate a radar detected signal when at least a first predetermined number of the first plurality of records are a first type of radar signal. A polling module is configured to selectively poll the storing module for additional records received after the first plurality of records when at least a second predetermined number and less than the first predetermined number of the first plurality records are the first type of radar signal.
摘要翻译：系统包括被配置为接收记录的存储模块。记录包括动态频率选择（DFS）信息。数据提取模块被配置为从第一多个记录中提取DFS信息。控制模块被配置为当至少第一预定数量的第一多个记录是第一类型的雷达信号时，确定第一多个记录中的每一个中的DFS信息是否是雷达信号，并且生成雷达检测信号。轮询模块被配置为当至少第二预定数量并且小于第一多个记录的第一预定数量是第一类型的雷达信号时，选择性地轮询存储模块用于在第一多个记录之后接收的附加记录。

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