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1.发明申请Versatile System for Dual Carrier Transformation in Orthogonal Frequency Division Multiplexing 审中-公开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
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。
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2.发明授权Versatile system for dual carrier transformation in orthogonal frequency division multiplexing 有权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：US07889635B2
公开(公告)日：2011-02-15
申请号：US12685404
申请日：2010-01-11
IPC分类号： H04J11/00
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, 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, 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： 本发明提供了一种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的通用系统。 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，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。
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3.发明申请公开(公告)号：US20100111138A1
公开(公告)日：2010-05-06
申请号：US12685404
申请日：2010-01-11
IPC分类号： H04B1/69
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, 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, 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： 本发明提供了一种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的通用系统。 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，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。
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4.发明授权Versatile system for dual carrier transformation in orthogonal frequency division multiplexing 有权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
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。
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5.发明申请Versatile system for dual carrier transformation in orthogonal frequency division multiplexing 有权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：US20050232137A1
公开(公告)日：2005-10-20
申请号：US11099317
申请日：2005-04-05
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。
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公开(公告)号：US09900193B2
公开(公告)日：2018-02-20
申请号：US13566639
申请日：2012-08-03
申请人： Timothy Mark Schmidl , Srinath Hosur , Anuj Batra
发明人： Timothy Mark Schmidl , Srinath Hosur , Anuj Batra
CPC分类号： H04L27/0012 , H04L27/2613
摘要： A method of communicating in a wireless network including a plurality of nodes having communications devices including a first node, wherein at least one node utilizes a first physical layer (PHY) modulation, and at least one other node utilizes a second PHY modulation different from the first PHY modulation. The first node receives a PHY frame transmitted by one of the plurality of nodes, and identifies a PHY modulation type selected from the first PHY modulation and the second PHY modulation used in the PHY frame or to be used in a subsequently to be received PHY frame or frame portion. The first node decodes the PHY frame or the subsequently to be received PHY frame or frame portion using the PHY modulation type identified in the identifying step.
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公开(公告)号：US08054914B2
公开(公告)日：2011-11-08
申请号：US12022461
申请日：2008-01-30
申请人： Deric W. Waters , Anuj Batra , Srinath Hosur
发明人： Deric W. Waters , Anuj Batra , Srinath Hosur
CPC分类号： H04L27/2647 , H04L1/206
摘要： A method and system for estimating noise variance. A method for noise variance estimation comprises receiving a first multi-sample symbol and receiving a second multi-sample symbol. The first multi-sample symbol is subtracted from the second multi-sample symbol to produce a set of noise samples. The set of noise samples is used to produce a noise variance estimate. The noise variance estimate is applied in various tasks (e.g. channel estimation, log-likelihood ratio computation, and/or minimum mean squared error equalization) to process data provided to a user.
摘要翻译： 一种用于估计噪声方差的方法和系统。 一种用于噪声方差估计的方法包括接收第一多样本符号并接收第二多样本符号。 从第二多样本符号中减去第一多样本符号以产生一组噪声样本。 噪声样本集用于产生噪声方差估计。 在各种任务（例如信道估计，对数似然比计算和/或最小均方误差均衡）中应用噪声方差估计以处理提供给用户的数据。
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公开(公告)号：US07957474B2
公开(公告)日：2011-06-07
申请号：US11618432
申请日：2006-12-29
申请人： Deric Wayne Waters , Srinath Hosur , Anuj Batra
发明人： Deric Wayne Waters , Srinath Hosur , Anuj Batra
IPC分类号： H04K1/10
CPC分类号： H04L27/0012 , H04L27/22 , H04L27/2647
摘要： Disclosed herein is a system and method for determining the presence of rotated-BPSK modulation. In addition, disclosed herein is a system and method for determining if a received packet is a Legacy, Mixed-Mode, or Green-Field packet in accordance with the determination of the presence of rotated-BPSK modulation. The presence of a Green-Field packet may be determined by detecting if additional tones are being excited in an LTF symbol of the received packet and/or if a SIG field symbol following the LTF symbol is modulated by rotated-BPSK. The presence of a Mixed-Mode packet may be determined by detecting if the first four bits of the SIG field symbol following the LTF symbol are [1 1 0 1] and/or detecting if a symbol following an L-SIG symbol is modulated by rotated-BPSK. The presence of a Legacy packet may be determined by detecting if the symbol following the L-SIG symbol is modulated by BPSK.
摘要翻译： 本文公开了一种用于确定旋转BPSK调制的存在的系统和方法。 此外，本文所公开的是根据确定旋转BPSK调制的确定来确定接收的分组是传统的，混合模式的还是绿色场分组的系统和方法。 可以通过检测在接收到的分组的LTF符号中是否激励附加音调和/或如果通过旋转BPSK调制LTF符号之后的SIG字段符号，则可以确定绿场分组的存在。 混合模式分组的存在可以通过检测LTF符号之后的SIG字段符号的前四位是否为[1×10 1]和/或检测在L-SIG符号之后的符号是否被 旋转BPSK。 可以通过检测L-SIG符号之后的符号是否被BPSK调制来确定遗留分组的存在。
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9.发明授权Time-switched preamble generator, method of generating and multiple-input, multiple-output communication system employing the generator and method 有权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：US07864661B2
公开(公告)日：2011-01-04
申请号：US10755603
申请日：2004-01-12
申请人： Srinath Hosur , Srikanth Gummadi , Anuj Batra , David P. Magee
发明人： Srinath Hosur , Srikanth Gummadi , Anuj Batra , David P. Magee
IPC分类号： H04J11/00
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。
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公开(公告)号：US20100180173A1
公开(公告)日：2010-07-15
申请号：US12686929
申请日：2010-01-13
申请人： Anuj Batra , Deric W. Waters , Srinath Hosur
发明人： Anuj Batra , Deric W. Waters , Srinath Hosur
CPC分类号： H04L1/1812 , H04L1/188 , H04L1/1893
摘要： Embodiments of the invention provide a system and method of hybrid automatic repeat-request (HARQ) processing. A viterbi decoder is coupled to and follows a descrambler. After the signal has been de-scrambled, it can be stored in a memory in case it needs to be recombined with another packet. This means that the log-likelihood ratios LLRs for each transmitted bit are stored in memory using a finite number of bits (for example, between 4 and 12 bits). If the packet that is currently being processed contains retransmitted information, then the de-scrambled output stored from a previous packet containing the same information can be loaded and combined with the current packet.
摘要翻译： 本发明的实施例提供了一种混合自动重传请求（HARQ）处理的系统和方法。 维特比解码器耦合到并跟随解扰器。 在信号被解除加扰之后，如果需要与另一个数据包重新组合，则可将其存储在存储器中。 这意味着每个发送的比特的对数似然比LLRs使用有限数量的比特（例如，在4比特和12比特之间）存储在存储器中。 如果当前处理的分组包含重发信息，则可以将包含相同信息的先前分组存储的去加扰输出加载并与当前分组组合。
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