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21. 发明授权

US08996066B1 Methods and apparatus for directing a beam towards a device in the presence of interference 有权
标题翻译：用于在存在干扰的情况下将光束引向设备的方法和装置
公开(公告)号：US08996066B1
公开(公告)日：2015-03-31
申请号：US12363047
申请日：2009-01-30
申请人： Jungwon Lee , Hui-Ling Lou
发明人： Jungwon Lee , Hui-Ling Lou
IPC分类号： H04W16/28
CPC分类号： H04B7/0617 , H04B7/0626 , H04L25/0204 , H04L25/021 , H04L25/0244 , H04W16/28 , H04W72/046 , H04W72/082
摘要： Methods and apparatus are provided for directing a beam towards a receiving device in the presence of interference. A beam transmitted by a transmission source is received by a received device. The beam shape is affected by signals transmitted by interfering sources. The receiving device computes channel estimates associated with the transmission source and the interfering sources. A feedback signal that represents the channel estimates associated with the transmission and interfering sources is transmitted to the transmission source. The transmission source changes characteristics of the beam to compensate for the interference caused by the interfering sources. The transmission source may change the characteristics of the beam by performing precoding algorithms.
摘要翻译：提供了用于在存在干扰的情况下将光束引向接收装置的方法和装置。由发送源发送的波束由接收的设备接收。光束形状受干扰源发射的信号的影响。接收设备计算与传输源和干扰源相关联的信道估计。表示与传输和干扰源相关联的信道估计的反馈信号被传送到传输源。传输源改变光束的特性以补偿由干扰源造成的干扰。传输源可以通过执行预编码算法来改变波束的特性。

22. 发明授权

US08964789B1 Method and system for data synchronization in communication systems using repetitive preamble patterns 有权
标题翻译：使用重复前导码模式的通信系统中数据同步的方法和系统
公开(公告)号：US08964789B1
公开(公告)日：2015-02-24
申请号：US12609862
申请日：2009-10-30
申请人： Jungwon Lee , Jiwoong Choi , Qing Zhao , Hui-Ling Lou
发明人： Jungwon Lee , Jiwoong Choi , Qing Zhao , Hui-Ling Lou
IPC分类号： H04J3/06
CPC分类号： H04L27/2643 , H04L7/042 , H04L27/2613 , H04L27/2656 , H04L2027/0026
摘要： Methods and apparatus for data synchronization in communication systems using repetitive preamble patterns. In one embodiment, a method includes receiving a signal, where the received signal includes a data unit. The data unit includes a preamble symbol, and the preamble symbol has a start time and includes Q portions, each having the same pattern. The method further includes determining multiple possible values of a frame timing (FT). The method further includes determining multiple correlation functions including at least one correlation function corresponding to each of the multiple possible values of the FT, such that a given correlation function corresponding to a given possible value of the FT represents a correlation between data in two non-adjacent portions of the Q portions associated with the given FT. The method further includes selecting one of the multiple possible values of the FT based at least in part on the multiple determined correlation functions.
摘要翻译：使用重复前导码模式的通信系统中的数据同步的方法和装置。在一个实施例中，一种方法包括接收信号，其中所接收的信号包括数据单元。数据单元包括前导符号，并且前导码符号具有开始时间，并且包括各自具有相同模式的Q个部分。该方法还包括确定帧定时（FT）的多个可能值。该方法还包括确定包括与FT的多个可能值中的每一个相对应的至少一个相关函数的多个相关函数，使得对应于FT的给定可能值的给定相关函数表示两个非可变值中的数据之间的相关性，与给定FT相关联的Q部分的相邻部分。该方法还包括至少部分地基于多个确定的相关函数来选择FT的多个可能值中的一个。

23. 发明授权

US08897394B1 Methods and apparatus for adaptively selecting a communications mode in high frequency systems 有权
标题翻译：用于在高频系统中自适应选择通信模式的方法和装置
公开(公告)号：US08897394B1
公开(公告)日：2014-11-25
申请号：US12400442
申请日：2009-03-09
申请人： Rohit U. Nabar , Hongyuan Zhang , Arul Durai Murugan Palanivelu , Hui-Ling Lou , Songping Wu
发明人： Rohit U. Nabar , Hongyuan Zhang , Arul Durai Murugan Palanivelu , Hui-Ling Lou , Songping Wu
IPC分类号： H03K9/00
CPC分类号： H04W72/085 , H04L5/0007 , H04L5/0023 , H04L5/0028 , H04L5/0069 , H04L5/0085 , H04L25/0204 , H04L25/0228 , H04L27/0008 , H04L27/261 , H04W24/10 , H04W88/06
摘要： Methods and apparatus are provided for adaptively selecting a communications mode in high frequency systems. A first dual-mode device having capabilities of using two or more high frequency communications modes, such as OFDM and SC modulation, may transmit a signal to a second dual-mode device with the same capabilities. The second dual-mode device may compute a channel characteristic associated with a high frequency communications channel and select an optimal high frequency communications mode. The second dual-mode device may transmit information indicative of the channel characteristic or the selected communications mode to the first dual-mode device. The first dual-mode device may select and operate using the optimal high frequency communications mode based on the information received from the second dual-mode device. The first and second dual-mode devices may communicate using the selected high frequency communications mode.
摘要翻译：提供了用于在高频系统中自适应地选择通信模式的方法和装置。具有使用诸如OFDM和SC调制之类的两个或多个高频通信模式的能力的第一双模设备可以将信号发送到具有相同能力的第二双模设备。第二双模设备可以计算与高频通信信道相关联的信道特性，并选择最佳高频通信模式。第二双模设备可以向第一双模设备发送指示信道特性或所选通信模式的信息。第一双模设备可以基于从第二双模设备接收的信息，使用最佳高频通信模式来选择和操作。第一和第二双模式设备可以使用所选择的高频通信模式进行通信。

24. 发明授权

US08879999B2 Using frequency bands characterized by type of unwanted interference for coexistence among multiple wireless communication technologies 有权
标题翻译：使用多种无线通信技术共存的特征为不想要的干扰类型的频带
公开(公告)号：US08879999B2
公开(公告)日：2014-11-04
申请号：US13611174
申请日：2012-09-12
申请人： Ying Cai , Jihwan P. Choi , Hui-Ling Lou , Vladan Petrovic , Chuxiang Li
发明人： Ying Cai , Jihwan P. Choi , Hui-Ling Lou , Vladan Petrovic , Chuxiang Li
IPC分类号： H04B1/00 , H04W72/08 , H04B1/40 , H04W88/06 , H04B1/10
CPC分类号： H04B1/406 , H04B1/109 , H04W72/082 , H04W88/06
摘要： Apparatus having corresponding methods and computer-readable media comprise: a first transceiver comprising a controller configured to select one of a plurality of frequency regions, and a transmitter configured to transmit, according to a first protocol, first wireless signals in the one of the plurality of the frequency regions selected by the controller, wherein each frequency region is characterized by a respective type of unwanted interference generated responsive to the transmitter transmitting the first wireless signals in the respective frequency region; an arbiter configured to select one or more frequency channels based on the one of the plurality of the frequency regions selected by the controller; and a second transceiver configured to transceive, according to a second protocol, second wireless signals only in the one or more frequency channels selected by the arbiter.
摘要翻译：具有相应方法和计算机可读介质的装置包括：第一收发器，包括被配置为选择多个频率区域中的一个的控制器，以及被配置为根据第一协议传输多个频率区域中的一个的第一无线信号的发射机其中每个频率区域的特征在于响应于在相应频率区域中发送第一无线信号的发射机而产生的相应类型的不需要的干扰; 配置为基于由控制器选择的多个频率区域中的一个选择一个或多个频率信道的仲裁器; 以及第二收发机，其被配置为仅在所述仲裁器选择的所述一个或多个频率信道中收发根据第二协议的第二无线信号。

25. 发明授权

US08817912B1 Phase-rotated tone-grouping modulation 有权
标题翻译：相位旋转音调分组调制
公开(公告)号：US08817912B1
公开(公告)日：2014-08-26
申请号：US13274401
申请日：2011-10-17
申请人： Songping Wu , Hui-Ling Lou
发明人： Songping Wu , Hui-Ling Lou
IPC分类号： H04L27/20
CPC分类号： H04L27/206 , H04L27/3411
摘要： Systems, methods, and other embodiments associated with phase-rotated tone-grouping modulation are described. According to one embodiment, an apparatus includes a parser configured to reposition bits of at least a portion of a data word. An encoder configured to, from the repositioned bits, form i) a tone grouping and ii) a copy of the tone grouping. The apparatus also includes a modulator configured to modulate the tone grouping and the copy of the tone grouping.
摘要翻译：描述了与相位旋转色调组调制相关联的系统，方法和其他实施例。根据一个实施例，一种装置包括被配置为重新定位数据字的至少一部分的位的解析器。配置成从重新定位的位形成i）音调分组的编码器，和ii）音调分组的副本。该装置还包括调制器，用于调制音调分组和音调分组的副本。

26. 发明授权

US08792598B1 Coexistence of multiple communication technologies on a single device 有权
标题翻译：多个通信技术在单个设备上共存
公开(公告)号：US08792598B1
公开(公告)日：2014-07-29
申请号：US13565228
申请日：2012-08-02
申请人： Raphael Cendrillon , Hui-Ling Lou
发明人： Raphael Cendrillon , Hui-Ling Lou
IPC分类号： H04B1/10
CPC分类号： H04B1/109 , H04B1/406 , H04B1/525
摘要： A method of mitigating interference from a transmitter of a communication device at a receiver of the same communication device, where the communication device operates according to at least a first and a second communication protocol, includes generating, in the transmitter, a transmit signal conforming to the second communication protocol, generating an interference estimate signal from the transmit signal using an adaptive filter, and receiving a receive signal at the receiver. The receive signal includes a desired component conforming to the first communication protocol and an interference component corresponding to the transmit signal. The method also includes processing the receive signal using the interference estimate signal to remove at least a portion of the interference component from the receive signal.
摘要翻译：一种减轻来自同一通信设备的接收机的通信设备的发射机的干扰的方法，其中通信设备根据至少第一和第二通信协议进行操作，包括在发射机中产生符合第二通信协议，使用自适应滤波器从发送信号生成干扰估计信号，以及在接收机处接收接收信号。接收信号包括符合第一通信协议的期望分量和对应于发射信号的干扰分量。该方法还包括使用干扰估计信号来处理接收信号，以从接收信号中去除干扰分量的至少一部分。

27. 发明授权

US08730789B1 Transmit diversity technique based on channel randomization for OFDM systems 有权
标题翻译：基于OFDM系统的信道随机化的发射分集技术
公开(公告)号：US08730789B1
公开(公告)日：2014-05-20
申请号：US13278893
申请日：2011-10-21
申请人： Jungwon Lee , Hui-Ling Lou
发明人： Jungwon Lee , Hui-Ling Lou
IPC分类号： H04J11/00
CPC分类号： H04J11/0063 , H04B7/0413 , H04B7/0456 , H04B7/0615 , H04B7/0885 , H04L1/0606 , H04L27/2626 , H04L27/2647
摘要： A physical layer module includes a mapping module and a plurality of gain modules. The mapping module maps a plurality of coded data streams to a plurality of transmit antennas, in which each transmit antenna is associated with a respective radio frequency channel of a plurality of radio frequency channels. Each gain module is associated with a respective radio frequency channel of the plurality of radio frequency channels, and is configured to apply a complex gain to the coded data stream mapped to the respective radio frequency channel associated with the gain module. The complex gain applied by the gain module differs relative to that applied by other gain modules, and corresponds to the transmit antenna associated with the respective radio frequency channel.
摘要翻译：物理层模块包括映射模块和多个增益模块。映射模块将多个编码数据流映射到多个发射天线，其中每个发射天线与多个射频信道的相应射频信道相关联。每个增益模块与多个射频信道的相应射频信道相关联，并且被配置为对映射到与增益模块相关联的相应射频信道的编码数据流应用复增益。由增益模块应用的复合增益与其他增益模块所应用的复合增益不同，并且对应于与各个射频信道相关联的发射天线。

28. 发明申请

US20130235908A1 APPARATUS FOR GENERATING SPREADING SEQUENCES AND DETERMINING CORRELATION 审中-公开
标题翻译：用于生成扩展序列和确定相关性的装置
公开(公告)号：US20130235908A1
公开(公告)日：2013-09-12
申请号：US13771596
申请日：2013-02-20
申请人： Hongyuan Zhang , Rohit U. Nabar , Songping Wu , Hui-Ling Lou
发明人： Hongyuan Zhang , Rohit U. Nabar , Songping Wu , Hui-Ling Lou
IPC分类号： H04B1/707
CPC分类号： H04B1/707 , H04J13/0014 , H04J13/10 , H04L27/2613 , H04L27/262
摘要： A circuit for use in a complementary Golay sequence generator or in a complementary Golay sequence correlator includes an input configured to receive an input signal, a set of delay elements, including delay elements corresponding to respective delays of 1, 2, 4, 8, 16, 32, and 64, and a set of multipliers interconnected with the input and the set of delay elements. The set of multipliers is configured to apply weight factors, and the weight factors define the sequence 1,1,−1,1,−1,1,−1. The circuit also includes a pair of outputs configured to output, in response to the input signal, one of (i) a pair of complementary Golay sequences or (ii) a pair of correlation output signals, using (a) the set of delay elements and (b) the set of weight multipliers.
摘要翻译：用于互补Golay序列发生器或互补Golay序列相关器的电路包括被配置为接收输入信号的输入，一组延迟元件，包括对应于1,2,4,8,16的各个延迟的延迟元件，32和64，以及与输入和该组延迟元件互连的一组乘法器。乘数组被配置为应用权重因子，权重因子定义了序列1,1,1,1,1,1,1。电路还包括一对输出，其被配置为响应于输入信号输出（i）一对互补格雷序列中的一个或（ii）一对相关输出信号，使用（a）该组延迟元件和（b）一组权重乘数。

29. 发明授权

US08526892B2 Sounding and steering protocols for wireless communications 有权
标题翻译：用于无线通信的探测和导向协议
公开(公告)号：US08526892B2
公开(公告)日：2013-09-03
申请号：US13610654
申请日：2012-09-11
申请人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Yong Liu
发明人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Yong Liu
IPC分类号： H04B1/00 , H04B7/00
CPC分类号： H04B7/0456 , H04B7/0413 , H04B7/0617 , H04B7/0619 , H04B7/0626 , H04B7/0634 , H04B7/0697 , H04L5/0048
摘要： Systems, apparatuses, and techniques relating to wireless local area network devices are described. A described technique includes transmitting a sounding packet to a wireless communication device(s) to determine characteristics of spatial wireless channels, the sounding packet being based on a spatial mapping matrix; receiving a feedback packet(s) from the device(s), the feedback packet(s) being indicative of one or more feedback matrices, the one or more feedback matrices being derived from wireless channel estimations that are based on received versions of the sounding packet; generating spatially steered data packets based on multiple data streams and one or more steering matrices, which are based on the spatial mapping matrix and the one or more feedback matrices; and transmitting a frame that includes the spatially steered data packets to the device(s). The spatially steered data packets can concurrently provide the streams respectively within the frame to the device(s) via different spatial wireless channels.
摘要翻译：描述与无线局域网设备相关的系统，设备和技术。所描述的技术包括向无线通信设备发送探测分组以确定空间无线信道的特性，所述探测分组基于空间映射矩阵; 从所述设备接收反馈分组，所述反馈分组指示一个或多个反馈矩阵，所述一个或多个反馈矩阵从基于所述发声的所接收的版本的无线信道估计导出包; 基于多个数据流和基于所述空间映射矩阵和所述一个或多个反馈矩阵的一个或多个导向矩阵来生成空间转向数据分组; 以及将包括所述空间转向数据分组的帧发送到所述设备。空间转向的数据分组可以通过不同的空间无线信道在帧内分别同时提供流到设备的流。

30. 发明授权

US08498195B1 HARQ retransmission scheme for at least two transmit antennas 有权
标题翻译：用于至少两个发射天线的HARQ重传方案
公开(公告)号：US08498195B1
公开(公告)日：2013-07-30
申请号：US12059945
申请日：2008-03-31
申请人： Jungwon Lee , Hui-Ling Lou
发明人： Jungwon Lee , Hui-Ling Lou
IPC分类号： H04J11/00
CPC分类号： H04B7/0623 , H04L1/0643 , H04L1/1812 , H04L1/1893
摘要： Systems and methods are provided for employing a HARQ retransmission scheme in a time invariant MIMO transmission channel with two inputs. During odd-numbered transmission attempts of information bearing signal s, the original signal s is sent. During even-numbered transmission attempts, a signal {hacek over (s)} that is different from but represents the same information as s is sent. By alternating between two different signals during retransmission, diversity gain is introduced. Information bearing signals s and {hacek over (s)} may also be subjected to precoding before transmission. The result of precoding is a channel that effectively changes with time. A receiver that operates using this retransmission scheme may use the information from some or all of the transmission attempts. The receiver may include a pre-processor for space-time codes that effectively converts {hacek over (s)} into an s representation.
摘要翻译：提供了在具有两个输入的时不变MIMO传输信道中采用HARQ重传方案的系统和方法。在信号承载信号s的奇数传输尝试期间，发送原始信号s。在偶数传输尝试期间，发送不同于但表示与s相同信息的信号{hacek over（s）}。通过在重传期间在两个不同的信号之间交替，引入分集增益。信息承载信号s和{hacek over（s）}也可以在传输之前进行预编码。预编码的结果是随时间有效变化的通道。使用该重传方案操作的接收机可以使用来自部分或全部传输尝试的信息。接收机可以包括用于将{hacek over（s）}有效地转换为s表示的时空码的预处理器。

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