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101.发明授权Systems and methods for construction of and network coding using near-maximum distance separable (MDS) linear network codes 有权使用近最大距离可分离（MDS）线性网络代码构建和网络编码的系统和方法公开(公告)号：US09112916B2
公开(公告)日：2015-08-18
申请号：US13595862
申请日：2012-08-27
CPC分类号： H04L69/22 , H04L1/0045 , H04L1/0057
摘要： A method for network coding using a near-maximum distance separable linear network code includes generating a message matrix where each column of the message matrix corresponds to one of K message packets and each element in a column of the message matrix corresponds to one of the symbols of the corresponding message packet. The method also includes generating a network code matrix to map the K message packets to N encoded packets, where any combination of K+1 columns of the network code contains at least K columns that are linearly independent. Further, the method includes multiplying the message matrix by the network code matrix to generate a transmission matrix, where each column of the transmission matrix corresponds to an encoded packet for wireless transmission.
摘要翻译： 使用近最大距离可分离线性网络代码的网络编码方法包括生成消息矩阵，其中消息矩阵的每一列对应于K个消息分组中的一个，并且消息矩阵的列中的每个元素对应于符号之一 的相应消息包。 该方法还包括生成网络码矩阵以将K个消息分组映射到N个编码分组，其中网络码的K + 1列的任何组合包含至少为线性独立的K个列。 此外，该方法包括将消息矩阵乘以网络码矩阵以生成传输矩阵，其中传输矩阵的每列对应于用于无线传输的编码分组。
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公开(公告)号：US08649446B2
公开(公告)日：2014-02-11
申请号：US13284745
申请日：2011-10-28
申请人： Taejoon Kim , Timothy M. Schmidl , Tarkesh Pande , Anuj Batra , June Chul Roh
发明人： Taejoon Kim , Timothy M. Schmidl , Tarkesh Pande , Anuj Batra , June Chul Roh
IPC分类号： H04L27/00
CPC分类号： H04L25/0212 , H04L25/0216 , H04L25/0222 , H04L27/2601
摘要： A system and method for classifying a channel with regard to delay spread in a wireless network applying orthogonal frequency division multiplexing. In one embodiment, a wireless receiver includes a channel classifier. The channel classifier is configured to compute a channel estimate corresponding to a channel traversed by a packet received by the wireless receiver. The channel classifier is also configured to partition the channel estimate into a plurality of windows. Each window corresponds to a range of time of the channel estimate. The channel classifier is further configured to assign a delay spread classification to the channel based on a distribution of energy across the windows.
摘要翻译： 一种用于对采用正交频分复用的无线网络中的延迟扩展对信道进行分类的系统和方法。 在一个实施例中，无线接收机包括信道分类器。 信道分类器被配置为计算与由无线接收机接收的分组所经过的信道相对应的信道估计。 信道分类器还被配置为将信道估计分割成多个窗口。 每个窗口对应于信道估计的时间范围。 信道分类器还被配置为基于跨越窗口的能量分布向信道分配延迟扩展分类。
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公开(公告)号：US08601269B2
公开(公告)日：2013-12-03
申请号：US11426227
申请日：2006-06-23
申请人： Anuj Batra , Srinivas Lingam
发明人： Anuj Batra , Srinivas Lingam
IPC分类号： G06F21/00
CPC分类号： H04B5/02 , H04K1/00 , H04L1/0059 , H04L1/0068 , H04L1/0071 , H04L9/0838 , H04L27/261 , H04L63/0492 , H04L63/061 , H04L2209/34 , H04L2209/80 , H04W12/04 , H04W52/28 , H04W52/367 , H04W52/50
摘要： A system is provided that includes a first device and a second device. The second device is configured to communicate wirelessly with the first device. The first and second devices selectively reduce an operational range for communications before sharing a secret, the secret related to data encryption.
摘要翻译： 提供了一种包括第一设备和第二设备的系统。 第二设备被配置为与第一设备进行无线通信。 在共享秘密之前，第一和第二设备选择性地减少用于通信的操作范围，与数据加密有关的秘密。
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公开(公告)号：US08189454B2
公开(公告)日：2012-05-29
申请号：US12773584
申请日：2010-05-04
CPC分类号： H04L5/023
摘要： A method for providing communication in a wireless network comprising one or more simultaneously operating pico networks includes dividing UWB spectrum into a plurality of frequency bands. These bands are formed into band groups. At least one band group is assigned to each one of the pico networks. At least pne time frequency code is assigned to symbols associated with each one of the pico networks on a transmission-by-transmission basis. A system for channelization of the spectrum includes a frequency-synthesized oscillator and a time frequency code generator configured to assign time-frequency codes to successive transmissions of a pico network such that the successive transmissions are transmitted in all frequency bands of a band group assigned to the pico network.
摘要翻译： 一种用于在包括一个或多个同时操作的微微网络的无线网络中提供通信的方法包括将UWB频谱划分成多个频带。 这些带形成带组。 至少一个频段组被分配给每个微微网络。 在逐个传输的基础上，至少将时间频率码分配给与微微网络中的每一个相关联的符号。 用于频谱信道化的系统包括频率合成振荡器和时间频率码发生器，其被配置为将时频码分配给微微网络的连续传输，使得连续传输在分配给 微微网络。
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105.发明申请公开(公告)号：US20120114054A1
公开(公告)日：2012-05-10
申请号：US13285222
申请日：2011-10-31
申请人： Deric W. Waters , Anuj Batra
发明人： Deric W. Waters , Anuj Batra
IPC分类号： H04L27/28
CPC分类号： H04L25/03006 , H04L2025/03414 , H04L2025/03426
摘要： Embodiments provide novel systems and methods for multiple-input multiple-output (MIMO) Max-Log detection. These systems and methods enable near-optimal performance with low complexity for a two-input two-output channel. Some embodiments comprise using a Max-Log detector to compute a set of log-likelihood ratio (LLR) values for a channel input by minimizing cost function while computing only one instance of the cost function for each value of each bit in a symbol. Other embodiments comprise using a Max-Log detector to compute a set of log-likelihood ratio (LLR) values for a channel input by computing all instances of a cost function for each value of each bit in a symbol and selecting the minimum cost from all computed instances of the cost function for each value of each bit.
摘要翻译： 实施例提供了用于多输入多输出（MIMO）Max-Log检测的新型系统和方法。 对于双输入双输出通道，这些系统和方法使得具有低复杂度的近乎最佳性能。 一些实施例包括使用Max-Log检测器通过最小化成本函数来计算用于信道输入的一组对数似然比（LLR）值，同时仅计算符号中每个比特的每个值的成本函数的一个实例。 其他实施例包括使用Max-Log检测器通过计算符号中每个位的每个值的成本函数的所有实例来计算通道输入的一组对数似然比（LLR）值，并从所有 每个位的每个值的成本函数的计算实例。
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106.发明授权公开(公告)号：US08059764B2
公开(公告)日：2011-11-15
申请号：US12062347
申请日：2008-04-03
申请人： Deric W. Waters , Anuj Batra
发明人： Deric W. Waters , Anuj Batra
IPC分类号： H04L27/06
CPC分类号： H04L25/03006 , H04L2025/03414 , H04L2025/03426
摘要： Embodiments provide novel systems and methods for multiple-input multiple-output (MIMO) Max-Log detection. These systems and methods enable near-optimal performance with low complexity for a two-input two-output channel. Some embodiments comprise using a Max-Log detector to compute a set of log-likelihood ratio (LLR) values for a channel input by minimizing cost function while computing only one instance of the cost function for each value of each bit in a symbol. Other embodiments comprise using a Max-Log detector to compute a set of log-likelihood ratio (LLR) values for a channel input by computing all instances of a cost function for each value of each bit in a symbol and selecting the minimum cost from all computed instances of the cost function for each value of each bit.
摘要翻译： 实施例提供了用于多输入多输出（MIMO）Max-Log检测的新型系统和方法。 对于双输入双输出通道，这些系统和方法使得具有低复杂度的近乎最佳性能。 一些实施例包括使用Max-Log检测器通过最小化成本函数来计算用于信道输入的一组对数似然比（LLR）值，同时仅计算符号中每个比特的每个值的成本函数的一个实例。 其他实施例包括使用Max-Log检测器通过计算符号中每个位的每个值的成本函数的所有实例来计算通道输入的一组对数似然比（LLR）值，并从所有 每个位的每个值的成本函数的计算实例。
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107.发明授权Robust packet detection, symbol timing, channel length estimation and channel response estimation for wireless systems 有权无线系统的鲁棒分组检测，符号定时，信道长度估计和信道响应估计公开(公告)号：US07965798B2
公开(公告)日：2011-06-21
申请号：US11893050
申请日：2007-08-13
IPC分类号： H04L27/06
CPC分类号： H04L25/0216 , H04B17/327 , H04L25/022 , H04L25/0228 , H04L27/2656 , H04L27/2662 , H04L27/2675
摘要： A method. The method includes producing a first signal match indication based on at least one match indication indicative of a match between at least one signal received in at least one band and a reference signal. The method also includes producing a first signal multipath combined signal based upon the first signal match indication, and detecting a first peak in the first multipath combined signal.
摘要翻译： 一个方法。 该方法包括基于指示在至少一个频带中接收的至少一个信号与参考信号之间的匹配的至少一个匹配指示产生第一信号匹配指示。 该方法还包括基于第一信号匹配指示产生第一信号多径组合信号，以及检测第一多路复合信号中的第一峰值。
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公开(公告)号：US20100260232A1
公开(公告)日：2010-10-14
申请号：US12759684
申请日：2010-04-13
申请人： June Chul Roh , Anuj Batra
发明人： June Chul Roh , Anuj Batra
IPC分类号： H04B1/713
CPC分类号： H04B1/7143
摘要： A method comprises generating, by logic, a random number. The method also comprises determining a next frequency in said sequence using the random number and one or more of a minimum separation, a channel number, and a number of channels. The method further comprises hopping to the next frequency.
摘要翻译： 一种方法包括通过逻辑产生随机数。 该方法还包括使用随机数来确定所述序列中的下一个频率，以及最小间隔，信道号和信道数目中的一个或多个。 该方法还包括跳到下一个频率。
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公开(公告)号：US07796574B2
公开(公告)日：2010-09-14
申请号：US10649260
申请日：2003-08-25
申请人： Anand G. Dabak , Anuj Batra
发明人： Anand G. Dabak , Anuj Batra
CPC分类号： H04B1/71637 , H04B1/7176 , H04B1/719 , H04L5/0016 , H04L27/2649
摘要： System and method for receiving transmissions in a wireless communications system. A preferred embodiment comprises a receiver (such as receiver 400) that can despread and then demodulate a symbol from a transmitter that first spread and then modulated the symbol. By reversing the processing order, the demodulation can be performed at a lower data rate and therefore reducing computational and power requirements.
摘要翻译： 用于在无线通信系统中接收传输的系统和方法。 一个优选实施例包括一个接收机（如接收机400），该接收机可以首先扩展然后对该符号进行调制，然后从发射机解扩，然后解调符号。 通过反转处理顺序，可以以更低的数据速率执行解调，从而减少计算和功率需求。
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公开(公告)号：US20100215077A1
公开(公告)日：2010-08-26
申请号：US12773584
申请日：2010-05-04
IPC分类号： H04B1/707
CPC分类号： H04L5/023
摘要： A method for providing communication in a wireless network comprising one or more simultaneously operating pico networks includes dividing UWB spectrum into a plurality of frequency bands. These bands are formed into band groups. At least one band group is assigned to each one of the pico networks. At least pne time frequency code is assigned to symbols associated with each one of the pico networks on a transmission-by-transmission basis. A system for channelization of the spectrum includes a frequency-synthesized oscillator and a time frequency code generator configured to assign time-frequency codes to successive transmissions of a pico network such that the successive transmissions are transmitted in all frequency bands of a band group assigned to the pico network.
摘要翻译： 一种用于在包括一个或多个同时操作的微微网络的无线网络中提供通信的方法包括将UWB频谱划分成多个频带。 这些带形成带组。 至少一个频段组被分配给每个微微网络。 在逐个传输的基础上，至少将时间频率码分配给与微微网络中的每一个相关联的符号。 用于频谱信道化的系统包括频率合成振荡器和时间频率码发生器，其被配置为将时频码分配给微微网络的连续传输，使得连续传输在分配给 微微网络。
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