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81. 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。

82. 发明授权

US08189454B2 Multi-band OFDM communications system 有权
标题翻译：多频带OFDM通信系统
公开(公告)号：US08189454B2
公开(公告)日：2012-05-29
申请号：US12773584
申请日：2010-05-04
申请人： Jaiganesh Balakrishnan , Anuj Batra , Anand G. Dabak
发明人： Jaiganesh Balakrishnan , Anuj Batra , Anand G. Dabak
IPC分类号： H04J11/00 , H04J4/00 , H04W4/00 , H04B7/216 , H04B1/00 , H04W72/00
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。

83. 发明申请

US20120114054A1 Systems and Methods for Low-Complexity Max-Log MIMO Detection 审中-公开
标题翻译：用于低复杂度最大对数MIMO检测的系统和方法
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。

84. 发明授权

US08059764B2 Systems and methods for low-complexity max-log MIMO detection 有权
标题翻译：用于低复杂度max-log MIMO检测的系统和方法
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。

85. 发明授权

US08040959B2 Dynamic resource allocation to improve MIMO detection performance 有权
标题翻译：动态资源分配，以提高MIMO检测性能
公开(公告)号：US08040959B2
公开(公告)日：2011-10-18
申请号：US11926966
申请日：2007-10-29
申请人： Deric W. Waters , Naftali Sommer , Anuj Batra , Srinath Hosur
发明人： Deric W. Waters , Naftali Sommer , Anuj Batra , Srinath Hosur
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L25/03006 , H04L2025/03414 , H04L2025/03426
摘要： A method and apparatus for detecting symbols in a Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (“MIMO-OFDM”) system. A MIMO-OFDM receiver includes a first detector that estimates a symbol of a first MIMO-OFDM sub-carrier and a second detector that estimates a symbol of a second MIMO-OFDM sub-carrier. The second detector differs in complexity from the first detector. A detector control block is coupled to the detectors. The detector control block assigns the first detector to process the first MIMO-OFDM sub-carrier and assigns the second detector to process the second MIMO-OFDM sub-carrier. The detector control block computes a list metric for a sub-carrier. Based on the list metric the detector control block assigns a candidate symbol list length to the detector processing the sub-carrier. Alternately, the detector control block assigns one of a variety of detector types to a sub-carrier based on the sub-carrier list metric.
摘要翻译：一种用于在多输入多输出正交频分复用（“MIMO-OFDM”）系统中检测符号的方法和装置。 MIMO-OFDM接收机包括估计第一MIMO-OFDM子载波的符号的第一检测器和估计第二MIMO-OFDM子载波的符号的第二检测器。第二检测器的复杂性与第一检测器不同。检测器控制块耦合到检测器。检测器控制块分配第一检测器来处理第一MIMO-OFDM子载波，并且分配第二检测器来处理第二MIMO-OFDM子载波。检测器控制块计算子载波的列表度量。基于列表度量，检测器控制块将候选符号列表长度分配给处理子载波的检测器。或者，检测器控制块基于子载波列表度量将各种检测器类型中的一种分配给子载波。

86. 发明授权

US07965798B2 Robust packet detection, symbol timing, channel length estimation and channel response estimation for wireless systems 有权
标题翻译：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
申请人： June Chul Roh , Anuj Batra , Manoneet Singh , Jaiganesh Balakrishnan
发明人： June Chul Roh , Anuj Batra , Manoneet Singh , Jaiganesh Balakrishnan
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。

87. 发明申请

US20100260232A1 FREQUENCY-HOPPING SCHEME 有权
标题翻译：频率偏好方案
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。

88. 发明授权

US07796574B2 Multi-carrier reception for ultra-wideband (UWB) systems 有权
标题翻译：用于超宽带（UWB）系统的多载波接收
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
IPC分类号： H04J11/00 , H04B7/204 , H04B7/216
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。

89. 发明申请

US20100215077A1 Multi-Band OFDM Communications System 有权
标题翻译：多频带OFDM通信系统
公开(公告)号：US20100215077A1
公开(公告)日：2010-08-26
申请号：US12773584
申请日：2010-05-04
申请人： Jaiganesh Balakrishnan , Anuj Batra , Anand G. Dabak
发明人： Jaiganesh Balakrishnan , Anuj Batra , Anand G. Dabak
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。

90. 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。

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