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1. 发明申请

US20110183621A1 METHOD AND APPARATUS FOR SPECTRAL SENSING 失效
标题翻译：用于光谱感测的方法和装置
公开(公告)号：US20110183621A1
公开(公告)日：2011-07-28
申请号：US12693284
申请日：2010-01-25
申请人： Zhi Quan , Stephen J. Shellhammer , Wenyi Zhang
发明人： Zhi Quan , Stephen J. Shellhammer , Wenyi Zhang
IPC分类号： H04B17/00
CPC分类号： H04L27/0006
摘要： An apparatus for wireless communication includes a processing system. The processing system is configured to estimate a power spectral density of a first signal. In addition, the processing system is configured to determine a normalized correlation detector between the estimated power spectral density and a known power spectral density of a second signal. Furthermore, the processing system is configured to determine whether the first signal contains the second signal based on the normalized correlation detector.
摘要翻译：一种用于无线通信的装置包括处理系统。处理系统被配置为估计第一信号的功率谱密度。此外，处理系统被配置为确定估计的功率谱密度和第二信号的已知功率谱密度之间的归一化相关检测器。此外，处理系统被配置为基于归一化相关检测器来确定第一信号是否包含第二信号。

2. 发明授权

US08600312B2 Method and apparatus for spectral sensing 失效
标题翻译：光谱检测方法和装置
公开(公告)号：US08600312B2
公开(公告)日：2013-12-03
申请号：US12693284
申请日：2010-01-25
申请人： Zhi Quan , Stephen J. Shellhammer , Wenyi Zhang
发明人： Zhi Quan , Stephen J. Shellhammer , Wenyi Zhang
IPC分类号： H04B17/00
CPC分类号： H04L27/0006
摘要： An apparatus for wireless communication includes a processing system. The processing system is configured to estimate a power spectral density of a first signal. In addition, the processing system is configured to determine a normalized correlation detector between the estimated power spectral density and a known power spectral density of a second signal. Furthermore, the processing system is configured to determine whether the first signal contains the second signal based on the normalized correlation detector.
摘要翻译：一种用于无线通信的装置包括处理系统。处理系统被配置为估计第一信号的功率谱密度。此外，处理系统被配置为确定估计的功率谱密度和第二信号的已知功率谱密度之间的归一化相关检测器。此外，处理系统被配置为基于归一化相关检测器来确定第一信号是否包含第二信号。

3. 发明授权

US08626056B2 Adjustable transmitter for privacy protection of content broadcast from a transmitting device to a receiving device 失效
标题翻译：可调节发射机，用于从发射设备广播到接收设备的内容的隐私保护
公开(公告)号：US08626056B2
公开(公告)日：2014-01-07
申请号：US12834342
申请日：2010-07-12
申请人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
发明人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
IPC分类号： H04H20/71
CPC分类号： H04N21/43637 , G09G5/006 , H04L65/4076 , H04L65/80 , H04N21/4122
摘要： Transmitting devices facilitate privacy protection of content broadcasted from the transmitting device to a receiving device without the need to modify the receiving device. A transmitting device may be adapted to acquire content, such as audio and/or video data, to be broadcasted by the transmitter for reception and use by a receiving device. A transmission range is selected to define a distance for broadcasting the content from the transmission device for reception and use by a receiving device. A frequency is also selected to be used for broadcasting the content. With the transmission range and frequency selected, the transmitting device may broadcast the content according to the selected transmission range and frequency.
摘要翻译：传输设备促进从发送设备广播到接收设备的内容的隐私保护，而不需要修改接收设备。发送设备可以适于获取要由发射机广播的内容，例如音频和/或视频数据，以便接收设备接收和使用。选择传输范围以定义用于从发送设备广播内容的距离，以用于接收设备的接收和使用。还选择用于广播内容的频率。在选择了传输范围和频率的情况下，发射设备可以根据所选择的传输范围和频率来广播内容。

4. 发明申请

US20110045781A1 SENSING WIRELESS COMMUNICATIONS IN TELEVISION FREQUENCY BANDS 有权
标题翻译：电视频段无线通信
公开(公告)号：US20110045781A1
公开(公告)日：2011-02-24
申请号：US12858334
申请日：2010-08-17
申请人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
发明人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
IPC分类号： H04B17/00
CPC分类号： H04B17/0057 , H04B17/26 , H04B17/318 , H04B17/382
摘要： In general, techniques are described for sensing wireless communications in television frequency bands, which may be implemented by a sensing device comprising a sensing unit, a power spectral density (PSD) estimation unit, a filter unit, a candidate selection unit, an analysis unit and a decision unit. The sensing unit senses a signal in the television frequencies bands. The PSD estimation unit calculates an estimate of a PSD for the sensed signal. The filter unit filters the estimated PSD. The candidate selection unit analyzes the filtered PSD to identify a candidate frequency representative of a potentially in use frequency. The analysis unit computes a test statistic for the candidate frequency. The decision unit compares the test statistic to a threshold to identify whether the candidate frequencies is actively in use by wireless communication devices.
摘要翻译：通常，描述了用于感测电视频带中的无线通信的技术，其可以由包括感测单元，功率谱密度（PSD）估计单元，滤波器单元，候选选择单元，分析单元和决策单位。感测单元感测电视频带中的信号。 PSD估计单元计算感测信号的PSD的估计。过滤器单元过滤估计的PSD。候选选择单元分析经滤波的PSD以识别代表潜在使用频率的候选频率。分析单元计算候选频率的测试统计量。决策单元将测试统计量与阈值进行比较，以识别候选频率是否被无线通信设备主动使用。

5. 发明申请

US20100105419A1 Spatio-Temporal Random Voting Scheme For Cognitive Networks 有权
标题翻译：认知网络的时空随机投票方案
公开(公告)号：US20100105419A1
公开(公告)日：2010-04-29
申请号：US12553955
申请日：2009-09-03
申请人： Yong Jin Kim , Lakshminath R. Dondeti , Stephen J. Shellhammer , Wenyi Zhang
发明人： Yong Jin Kim , Lakshminath R. Dondeti , Stephen J. Shellhammer , Wenyi Zhang
IPC分类号： H04B7/00
CPC分类号： H04W24/00 , H04W72/02 , H04W72/082 , H04W84/18
摘要： A spatio-temporal random voting scheme is provided that incorporates location distribution, spatial randomness, and temporal randomness in the collection of information from a plurality of sensing devices within the cognitive network. The region is divided into a plurality of sectors, where each sector is a portion of the region. A subset of sectors is selected from the plurality of sectors in the region to provide spatial randomness. A device is randomly selected from each sector in the subset of sectors to provide additional spatial randomness to the information collection process. Temporal randomness may be introduced by randomly selecting a timeslot within a sensing window period in which devices are to scan a frequency spectrum band to determine if a signal energy above a threshold is detected. Sensing reports are then collected from the selected sensing devices and used to determine whether the frequency spectrum band is available or in use.
摘要翻译：提供了一种时空随机投票方案，其包括来自认知网络内的多个感测装置的信息收集中的位置分布，空间随机性和时间随机性。该区域被分成多个扇区，其中每个扇区是区域的一部分。从区域中的多个扇区中选择扇区的子集以提供空间随机性。从扇区子集中的每个扇区随机选择一个设备，以向信息收集过程提供额外的空间随机性。可以通过在感测窗口周期内随机选择时隙来引入时间随机性，其中设备将扫描频谱带以确定是否检测到高于阈值的信号能量。然后从所选择的感测装置收集感测报告，并用于确定频谱带是可用还是正在使用。

6. 发明授权

US08750804B2 Applying spurious interference rejection to detect incumbent users of television channels 失效
标题翻译：应用杂散干扰抑制来检测电视频道的现有用户
公开(公告)号：US08750804B2
公开(公告)日：2014-06-10
申请号：US12752527
申请日：2010-04-01
申请人： Wenyi Zhang , Stephen J. Shellhammer
发明人： Wenyi Zhang , Stephen J. Shellhammer
IPC分类号： H04B1/00 , H04B15/00
CPC分类号： H04W24/00 , H04L1/20 , H04W28/18
摘要： The use of white space devices in unused portions of the television channel spectrum is facilitated by spectrum sensing techniques that combine interference rejection techniques with feature extraction techniques to detect presence or absence of incumbent users in the spectrum.
摘要翻译：通过将干扰抑制技术与特征提取技术组合以检测频谱中现有用户的存在或不存在的频谱感测技术来促进在电视频道频谱的未使用部分中使用空白设备。

7. 发明申请

US20130012138A1 METHOD FOR IMPROVING ROBUSTNESS OF SPECTRUM SENSING IN PRESENCE OF BURSTY INTERFERENCE 审中-公开
标题翻译：用于改善波纹干扰存在的光谱感知的鲁棒性的方法
公开(公告)号：US20130012138A1
公开(公告)日：2013-01-10
申请号：US13177334
申请日：2011-07-06
申请人： Wenyi Zhang , Cong Shen , Ahmed K. Sadek , Yong Jin Kim , Stephen J. Shellhammer
发明人： Wenyi Zhang , Cong Shen , Ahmed K. Sadek , Yong Jin Kim , Stephen J. Shellhammer
IPC分类号： H04B17/00
CPC分类号： H04W16/14 , H04B17/26 , H04B17/309
摘要： A method of wireless communication in white space includes spectrum sensing in the white space during each of multiple sensing intervals. The method also includes determining whether each of the sensing intervals is subject to interference. The determining process may be based on a time domain analysis or a frequency domain analysis of signal power during each sensing interval.
摘要翻译：白色空间中的无线通信方法包括在多个感测间隔中的每一个期间的白色空间中的频谱感测。该方法还包括确定每个感测间隔是否受到干扰。确定过程可以基于每个感测间隔期间的信号功率的时域分析或频域分析。

8. 发明申请

US20110009049A1 Adjustable Transmitter For Privacy Protection Of Content Broadcast From A Transmitting Device To A Receiving Device 失效
标题翻译：可调式发射机用于从传输设备到接收设备的内容广播的隐私保护
公开(公告)号：US20110009049A1
公开(公告)日：2011-01-13
申请号：US12834342
申请日：2010-07-12
申请人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
发明人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
IPC分类号： H04H20/71
CPC分类号： H04N21/43637 , G09G5/006 , H04L65/4076 , H04L65/80 , H04N21/4122
摘要： Transmitting devices facilitate privacy protection of content broadcasted from the transmitting device to a receiving device without the need to modify the receiving device. A transmitting device may be adapted to acquire content, such as audio and/or video data, to be broadcasted by the transmitter for reception and use by a receiving device. A transmission range is selected to define a distance for broadcasting the content from the transmission device for reception and use by a receiving device. A frequency is also selected to be used for broadcasting the content. With the transmission range and frequency selected, the transmitting device may broadcast the content according to the selected transmission range and frequency.
摘要翻译：传输设备促进从发送设备广播到接收设备的内容的隐私保护，而不需要修改接收设备。发送设备可以适于获取要由发射机广播的内容，例如音频和/或视频数据，以便接收设备接收和使用。选择传输范围以定义用于从发送设备广播内容的距离，以用于接收设备的接收和使用。还选择用于广播内容的频率。在选择了传输范围和频率的情况下，发射设备可以根据所选择的传输范围和频率来广播内容。

9. 发明申请

US20100302459A1 Applying Spurious Interference Rejection to Detect Incumbent Users of Television Channels 失效
标题翻译：应用杂散干扰抑制来检测电视频道的现有用户
公开(公告)号：US20100302459A1
公开(公告)日：2010-12-02
申请号：US12752527
申请日：2010-04-01
申请人： Wenyi Zhang , Stephen J. Shellhammer
发明人： Wenyi Zhang , Stephen J. Shellhammer
IPC分类号： H04N5/46 , H04B17/00 , H04B15/00
CPC分类号： H04W24/00 , H04L1/20 , H04W28/18
摘要： The use of white space devices in unused portions of the television channel spectrum is facilitated by spectrum sensing techniques that combine interference rejection techniques with feature extraction techniques to detect presence or absence of incumbent users in the spectrum.
摘要翻译：通过将干扰抑制技术与特征提取技术组合以检测频谱中现有用户的存在或不存在的频谱感测技术来促进在电视频道频谱的未使用部分中使用空白设备。

10. 发明授权

US08892050B2 Sensing wireless communications in television frequency bands 有权
标题翻译：感应电视频段的无线通信
公开(公告)号：US08892050B2
公开(公告)日：2014-11-18
申请号：US12858334
申请日：2010-08-17
申请人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
发明人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
IPC分类号： H04B17/00
CPC分类号： H04B17/0057 , H04B17/26 , H04B17/318 , H04B17/382
摘要： In general, techniques are described for sensing wireless communications in television frequency bands, which may be implemented by a sensing device comprising a sensing unit, a power spectral density (PSD) estimation unit, a filter unit, a candidate selection unit, an analysis unit and a decision unit. The sensing unit senses a signal in the television frequencies bands. The PSD estimation unit calculates an estimate of a PSD for the sensed signal. The filter unit filters the estimated PSD. The candidate selection unit analyzes the filtered PSD to identify a candidate frequency representative of a potentially in use frequency. The analysis unit computes a test statistic for the candidate frequency. The decision unit compares the test statistic to a threshold to identify whether the candidate frequencies is actively in use by wireless communication devices.
摘要翻译：通常，描述了用于感测电视频带中的无线通信的技术，其可以由包括感测单元，功率谱密度（PSD）估计单元，滤波器单元，候选选择单元，分析单元和决策单位。感测单元感测电视频带中的信号。 PSD估计单元计算感测信号的PSD的估计。过滤器单元过滤估计的PSD。候选选择单元分析经滤波的PSD以识别代表潜在使用频率的候选频率。分析单元计算候选频率的测试统计量。决策单元将测试统计量与阈值进行比较，以识别候选频率是否被无线通信设备主动使用。

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