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41. 发明申请

US20080310538A1 Versatile System for Dual Carrier Transformation in Orthogonal Frequency Division Multiplexing 审中-公开
标题翻译：在正交频分复用中双载波变换的多功能系统
公开(公告)号：US20080310538A1
公开(公告)日：2008-12-18
申请号：US12198630
申请日：2008-08-26
申请人： Srinath Hosur , Jaiganesh Balakrishnan , Anuj Batra
发明人： Srinath Hosur , Jaiganesh Balakrishnan , Anuj Batra
IPC分类号： H04L27/28
CPC分类号： H04L27/2602 , H04B1/7176
摘要： The present invention provides a versatile system for selectively spreading carrier data across multiple carrier paths within an Orthogonal Frequency Division Multiplexing (OFDM) system (200), particularly an ultra-wideband (UWB) system. The present invention provides a data input (202), which passes data to a randomizer (204). The data then passes to a convolutional code function (206), the output of which is punctured by puncturing function (208). An interleaver function (210) receives the punctured code data, and cooperatively operates with a mapper element (218) to prepare the coded data for pre-transmission conversion by an IFFT (220). The mapper element (218) comprises a dual carrier modulation function (216), which associates and transforms two punctured code data elements into a format for transmission on two separate signal tones.
摘要翻译：本发明提供了一种通用系统，用于在正交频分复用（OFDM）系统（200），特别是超宽带（UWB）系统内的多个载波路径上选择性地扩展载波数据。本发明提供一种将数据传递给随机发生器（204）的数据输入（202）。数据然后传递到卷积码功能（206），其输出被穿孔功能（208）打孔。交织器功能（210）接收穿孔码数据，并与映射器元件（218）协作操作，以通过IFFT（220）准备用于预传输转换的编码数据。映射器元件（218）包括双载波调制功能（216），其将两个穿孔码数据元素相关联并变换为用于在两个分离的信号音调上传输的格式。

42. 发明申请

US20080212461A1 TRANSFORM-BASED SYSTEMS AND METHODS FOR RECONSTRUCTING STEERING MATRICES IN A MIMO-OFDM SYSTEM 审中-公开
标题翻译：基于变换的系统和用于重构MIMO-OFDM系统中的转向矩阵的方法
公开(公告)号：US20080212461A1
公开(公告)日：2008-09-04
申请号：US12040750
申请日：2008-02-29
申请人： Tarkesh Pande , Srinath Hosur , Anuj Batra
发明人： Tarkesh Pande , Srinath Hosur , Anuj Batra
IPC分类号： H04J11/00
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0634 , H04B7/0639 , H04B7/066 , H04L5/0023 , H04L25/0248 , H04L25/03343 , H04L2025/03426 , H04L2025/03802
摘要： Embodiments provide a transform-based method for representing steering matrices in transmit beamforming for a multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) system. Beamforming embodiments generate a transform-based representation of steering matrices for at least a subset of sub-carriers for which channel information is known. In some embodiments, a beamformer is able to receive transform matrices information for at least a subset of channel sub-carriers, and generate corresponding channel sub-carrier steering matrices. Some embodiments of a beamformee are able to map at least a subset of channel sub-carrier steering matrices to corresponding transform matrices information prior to transmitting the transform matrix information to a beamformer. Other embodiments of a beamformer are able to receive channel information for at least a subset of sub-carriers of a channel, and compute a transform-based representation of a steering matrix for each sub-carrier for which channel information is known.
摘要翻译：实施例提供了一种用于表示多输入多输出正交频分复用（MIMO-OFDM）系统的发射波束成形中的导引矩阵的基于变换的方法。波束形成实施例为已知信道信息的子载波的至少一个子集生成导向矩阵的基于变换的表示。在一些实施例中，波束形成器能够接收用于信道子载波的至少子集的变换矩阵信息，并且生成相应的信道子载波导引矩阵。在将变换矩阵信息发送到波束形成器之前，波束形成器的一些实施例能够将信道子载波导引矩阵的至少一个子集映射到对应的变换矩阵信息。波束形成器的其他实施例能够接收信道的子载波的至少一个子集的信道信息，并且为已知信道信息的每个子载波计算导频矩阵的基于变换的表示。

43. 发明申请

US20050271166A1 Low-complexity, symbol-based, reduced substreams maximum likelihood decoder and method for a multiple-input, multiple-output communication system 有权
标题翻译：低复杂度，基于符号的减少子流最大似然解码器和多输入多输出通信系统的方法
公开(公告)号：US20050271166A1
公开(公告)日：2005-12-08
申请号：US10863455
申请日：2004-06-08
申请人： David Love , Srinath Hosur , Anuj Batra
发明人： David Love , Srinath Hosur , Anuj Batra
IPC分类号： H03D1/00 , H04B7/04 , H04L1/00 , H04L25/02 , H04L27/06 , H04L27/26
CPC分类号： H04L1/005 , H04B7/04 , H04L25/0204 , H04L27/2601
摘要： A greater likelihood decoder, a method of deriving a reduced substreams maximum likelihood (RSML) decoded symbol vector and a multiple-input, multiple-output (MIMO) receiver incorporating the decoder or the method. In one embodiment, the decoder includes: (1) a suboptimal decoder that analyzes a received symbol vector to generate substream indicators and a decoded symbol vector estimate, (2) weakest substreams decision logic, coupled to the suboptimal decoder, that receives the substream indicators and selects weakest ones thereof and (3) subspace search logic, coupled to the suboptimal decoder and the weakest substreams decision logic, that further selects a reduced substreams maximum likelihood (RSML) decoded symbol vector from a subspace of decoded symbol vector candidates derived from the decoded symbol vector estimate and the weakest ones.
摘要翻译：更大似然解码器，导出减少的子流最大似然（RSML）解码符号向量的方法和包含解码器或方法的多输入多输出（MIMO）接收机的方法。在一个实施例中，解码器包括：（1）分析接收的符号向量以产生子流指示符和解码的符号向量估计的次优解码器，（2）耦合到次优解码器的最弱子流决策逻辑，其接收子流指示符并选择最弱的子码流决策逻辑，以及（3）子空间搜索逻辑，该子空间搜索逻辑耦合到次优解码器和最弱子流判决逻辑，其进一步从从解码符号向量候选导出的解码符号向量候选的子空间中选择减少的子流最大似然（RSML）解码符号向量解码符号向量估计和最弱的符号向量估计。

44. 发明申请

US20050153723A1 Time-switched preamble generator, method of generating and multiple-input, multiple-output communication system employing the generator and method 有权
标题翻译：时间切换前导码生成器，生成和多输入方法，采用发生器和方法的多输出通信系统
公开(公告)号：US20050153723A1
公开(公告)日：2005-07-14
申请号：US10755603
申请日：2004-01-12
申请人： Srinath Hosur , Srikanth Gummadi , Anuj Batra , David Magee
发明人： Srinath Hosur , Srikanth Gummadi , Anuj Batra , David Magee
IPC分类号： H04W88/08 , H04Q7/00
CPC分类号： H04W88/08
摘要： The present invention is directed to a time-switched preamble generator and method of generating a time-switched preamble for use with a multiple-input, multiple-output (MIMO) transmitter employing first and second transmit antennas. In one embodiment, the time-switched preamble generator includes an initial preamble formatter configured to provide a first preamble to the first transmit antenna and a second preamble to the second transmit antenna during an initial time interval. The time-switched preamble generator also includes a subsequent preamble formatter coupled to the initial preamble formatter and configured to provide the second preamble to the first transmit antenna and the first preamble to the second transmit antenna during a subsequent time interval.
摘要翻译：本发明涉及一种时间切换前导码生成器和用于与采用第一和第二发射天线的多输入多输出（MIMO）发射机一起使用的时间切换前同步码的方法。在一个实施例中，时间切换前导码生成器包括初始前同步码格式器，其被配置为在初始时间间隔期间向第一发射天线提供第一前同步码和第二前导码到第二发射天线。时间切换前导码生成器还包括后续前导码格式器，其耦合到初始前导码格式化器并且被配置为在随后的时间间隔期间向第一发射天线提供第二前同步码和第一前导码到第二发射天线。

45. 发明授权

US09179362B2 Systems and methods for networking coding using Reed-Solomon codes 有权
标题翻译：使用Reed-Solomon码进行网络编码的系统和方法
公开(公告)号：US09179362B2
公开(公告)日：2015-11-03
申请号：US13595774
申请日：2012-08-27
申请人： Samantha Rose Summerson , Anuj Batra , Srinath Hosur , Georgios Angelopoulos
发明人： Samantha Rose Summerson , Anuj Batra , Srinath Hosur , Georgios Angelopoulos
IPC分类号： H04W4/00 , H04W28/06 , H04L1/00 , H03M13/15 , H03M13/37
CPC分类号： H04L1/0041 , G06F11/1004 , H03M13/1515 , H03M13/373 , H03M13/3761 , H04L1/0057 , H04W28/065
摘要： A method for network coding includes encoding a plurality of message packets to produce a plurality of encoded packets. Each message packet and each encoded packet includes a plurality of symbols having an index and each symbol of the encoded packets is generated by applying a Reed-Solomon code to the symbols of the message packets having the same index as the symbol of the encoded packets. A length of the encoded packets is the same as a length of the message packets.
摘要翻译：一种用于网络编码的方法包括编码多个消息分组以产生多个编码分组。每个消息分组和每个编码分组包括具有索引的多个符号，并且通过将Reed-Solomon码应用于具有与编码分组的符号相同的索引的消息分组的符号来生成编码分组的每个符号。编码包的长度与消息包的长度相同。

46. 发明授权

US08446934B2 Frequency diversity and phase rotation 有权
标题翻译：频率分集和相位旋转
公开(公告)号：US08446934B2
公开(公告)日：2013-05-21
申请号：US12873114
申请日：2010-08-31
申请人： Timothy M. Schmidl , Anuj Batra , Srinath Hosur
发明人： Timothy M. Schmidl , Anuj Batra , Srinath Hosur
IPC分类号： H04B1/38
CPC分类号： H04L27/2626 , H04B7/12 , H04L1/0071 , H04L1/08 , H04L27/2602 , H04L27/2621
摘要： An integrated circuit includes logic configured to encode one or more first data symbols in one or more first sub-carriers as one or more second data symbols in one or more second sub-carriers of a smart-utility-network communication.
摘要翻译：集成电路包括被配置为将一个或多个第一子载波中的一个或多个第一数据符号编码为智能公用网络通信的一个或多个第二子载波中的一个或多个第二数据符号的逻辑。

47. 发明授权

US08346175B2 Wireless signal detection using a transformed lattice boundary 有权
标题翻译：使用变换的格子边界的无线信号检测
公开(公告)号：US08346175B2
公开(公告)日：2013-01-01
申请号：US12022652
申请日：2008-01-30
申请人： David L. Milliner , Anuj Batra , Srinath Hosur
发明人： David L. Milliner , Anuj Batra , Srinath Hosur
IPC分类号： H04B17/00
CPC分类号： H04L25/03242 , H04L1/206
摘要： In at least some embodiments, a wireless communication system includes a transmitter that transmits a signal over a communication channel. The system also includes a receiver that receives the signal as an output of the communication channel. The receiver establishes a boundary for a transformed lattice and eliminates candidates outside the established boundary.
摘要翻译：在至少一些实施例中，无线通信系统包括通过通信信道发送信号的发射机。该系统还包括接收信号作为通信信道的输出的接收机。接收机为变换的格子建立边界，并消除建立边界以外的候选者。

48. 发明授权

US07668075B2 Versatile system for dual carrier transformation in orthogonal frequency division multiplexing 有权
标题翻译：用于正交频分复用的双载波变换的多功能系统
公开(公告)号：US07668075B2
公开(公告)日：2010-02-23
申请号：US11099317
申请日：2005-04-05
申请人： Srinath Hosur , Jaiganesh Balakrishnan , Anuj Batra
发明人： Srinath Hosur , Jaiganesh Balakrishnan , Anuj Batra
IPC分类号： H04J11/00
CPC分类号： H04L27/2602 , H04B1/7176
摘要： Embodiments of the invention provide a versatile system for selectively spreading carrier data across multiple carrier paths within an Orthogonal Frequency Division Multiplexing (OFDM) system, particularly an ultra-wideband (UWB) system. The present invention provides a data input, which passes data to a randomizer. The data then passes to a convolutional code function (206), the output of which is punctured by puncturing function. An interleaver function receives the punctured code data, and cooperatively operates with a mapper element to prepare the coded data for pre-transmission conversion by an IFFT. The mapper element comprises a dual carrier modulation function, which associates and transforms two punctured code data elements into a format for transmission on two separate signal tones.
摘要翻译：本发明的实施例提供了一种通用系统，用于在正交频分复用（OFDM）系统，特别是超宽带（UWB）系统内的多个载波路径上选择性地扩展载波数据。本发明提供一种将数据传递给随机发生器的数据输入。数据然后传递到卷积码功能（206），其输出由穿孔功能打孔。交织器功能接收穿孔码数据，并与映射器元件协作操作以通过IFFT准备用于预传输转换的编码数据。映射器元件包括双载波调制功能，其将两个穿孔码数据元素相关联并变换为用于在两个分离的信号音调上传输的格式。

49. 发明申请

US20080095281A1 MIMO decoding 审中-公开
标题翻译： MIMO解码
公开(公告)号：US20080095281A1
公开(公告)日：2008-04-24
申请号：US11323746
申请日：2005-12-30
申请人： Srinath Hosur , Michael O. Polley , Anuj Batra , Manish Goel
发明人： Srinath Hosur , Michael O. Polley , Anuj Batra , Manish Goel
IPC分类号： H04B7/10 , H04L1/02
CPC分类号： H04L25/03203 , H04L1/0631 , H04L25/03184 , H04L25/0328 , H04L27/2601
摘要： In a wireless MIMO system with interference cancellation, compensate for decision errors in the cancelled symbols by adjustments to the scaling of the soft estimates with additive interference-proportional to estimates of the decision error probability.
摘要翻译：在具有干扰消除的无线MIMO系统中，通过对具有与决策误差概率的估计成比例的加性干扰的软估计的缩放进行调整来补偿所取消符号中的判定误差。

50. 发明授权

US07321644B2 Low-complexity, symbol-based, reduced substreams maximum likelihood decoder and method for a multiple-input, multiple-output communication system 有权
标题翻译：低复杂度，基于符号的减少子流最大似然解码器和多输入多输出通信系统的方法
公开(公告)号：US07321644B2
公开(公告)日：2008-01-22
申请号：US10863455
申请日：2004-06-08
申请人： David J. Love , Srinath Hosur , Anuj Batra
发明人： David J. Love , Srinath Hosur , Anuj Batra
IPC分类号： H03D1/00
CPC分类号： H04L1/005 , H04B7/04 , H04L25/0204 , H04L27/2601
摘要： A greater likelihood decoder, a method of deriving a reduced substreams maximum likelihood (RSML) decoded symbol vector and a multiple-input, multiple-output (MIMO) receiver incorporating the decoder or the method. In one embodiment, the decoder includes: (1) a suboptimal decoder that analyzes a received symbol vector to generate substream indicators and a decoded symbol vector estimate, (2) weakest substreams decision logic, coupled to the suboptimal decoder, that receives the substream indicators and selects weakest ones thereof and (3) subspace search logic, coupled to the suboptimal decoder and the weakest substreams decision logic, that further selects a reduced substreams maximum likelihood (RSML) decoded symbol vector from a subspace of decoded symbol vector candidates derived from the decoded symbol vector estimate and the weakest ones.
摘要翻译：更大似然解码器，导出减少的子流最大似然（RSML）解码符号向量的方法和包含解码器或方法的多输入多输出（MIMO）接收机的方法。在一个实施例中，解码器包括：（1）分析接收的符号向量以产生子流指示符和解码的符号向量估计的次优解码器，（2）耦合到次优解码器的最弱子流决策逻辑，其接收子流指示符并选择最弱的子码流决策逻辑，以及（3）子空间搜索逻辑，该子空间搜索逻辑耦合到次优解码器和最弱子流判决逻辑，其进一步从从解码符号向量候选导出的解码符号向量候选的子空间中选择减少的子流最大似然（RSML）解码符号向量解码符号向量估计和最弱的符号向量估计。

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