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1. 发明授权

US08315660B2 User power offset estimation using dedicated pilot tones for OFDMA 有权
标题翻译：使用OFDMA专用导频音的用户功率偏移估计
公开(公告)号：US08315660B2
公开(公告)日：2012-11-20
申请号：US11675055
申请日：2007-02-14
申请人： Petru Cristian Budianu , Dhananjay A. Gore , Alexei Y. Gorokhov
发明人： Petru Cristian Budianu , Dhananjay A. Gore , Alexei Y. Gorokhov
IPC分类号： H04B7/00
CPC分类号： H04W52/34
摘要： A method of user power offset estimation for a wireless communication system is disclosed. Dedicated pilot symbols transmitted over at least one time-frequency region for a user are received. Power offset of the user is estimated based on the received dedicated pilot symbols.
摘要翻译：公开了一种用于无线通信系统的用户功率偏移估计的方法。接收通过用户的至少一个时间 - 频率区域发送的专用导频符号。基于所接收的专用导频符号来估计用户的功率偏移。

2. 发明申请

US20080165891A1 PILOT DESIGN FOR IMPROVED CHANNEL AND INTERFERENCE ESTIMATION 有权
标题翻译：用于改进通道和干扰估计的试验设计
公开(公告)号：US20080165891A1
公开(公告)日：2008-07-10
申请号：US11691243
申请日：2007-03-26
申请人： Petru Cristian Budianu , Dhananjay A. Gore , Alexei Gorokhov
发明人： Petru Cristian Budianu , Dhananjay A. Gore , Alexei Gorokhov
IPC分类号： H04L27/00
CPC分类号： H04L25/0202 , H04L5/0023 , H04L5/0048
摘要： Techniques for transmitting pilot and for processing received pilot to obtain channel and interference estimates are described. A terminal may generate pilot symbols for a first cluster in a time frequency block based on a first sequence and may generate pilot symbols for a second cluster in the time frequency block based on a second sequence. The first and second sequences may include common elements arranged in different orders and may be considered as different versions of a single sequence. The terminal may transmit the pilot symbols in their respective clusters. A base station may obtain received pilot symbols from multiple clusters in the time frequency block. The base station may form each of multiple basis vectors with multiple versions of the sequence assigned to the terminal and may process the received pilot symbols with the multiple basis vectors to obtain a channel estimate for the terminal.
摘要翻译：描述用于发送导频和处理接收导频以获得信道和干扰估计的技术。终端可以基于第一序列在时间频率块中生成用于第一簇的导频符号，并且可以基于第二序列在时间频率块中生成用于第二簇的导频符号。第一和第二序列可以包括以不同顺序排列的公共元素，并且可以被认为是单个序列的不同版本。终端可以在它们各自的簇中发送导频符号。基站可以在时间频率块中从多个簇获得接收到的导频符号。基站可以形成分配给终端的序列的多个版本的多个基本向量中的每一个，并且可以用多个基本向量处理所接收的导频符号以获得终端的信道估计。

3. 发明申请

US20120155425A1 PILOT DESIGN FOR IMPROVED CHANNEL AND INTERFERENCE ESTIMATION 有权
标题翻译：用于改进通道和干扰估计的试验设计
公开(公告)号：US20120155425A1
公开(公告)日：2012-06-21
申请号：US13402537
申请日：2012-02-22
申请人： Petru Cristian Budianu , Dhananjay A. Gore , Alexei Gorokhov
发明人： Petru Cristian Budianu , Dhananjay A. Gore , Alexei Gorokhov
IPC分类号： H04W72/04
CPC分类号： H04L25/0202 , H04L5/0023 , H04L5/0048
摘要： Techniques for transmitting pilot and for processing received pilot to obtain channel and interference estimates are described. A terminal may generate pilot symbols for a first cluster in a time frequency block based on a first sequence and may generate pilot symbols for a second cluster in the time frequency block based on a second sequence. The first and second sequences may include common elements arranged in different orders and may be considered as different versions of a single sequence. The terminal may transmit the pilot symbols in their respective clusters. A base station may obtain received pilot symbols from multiple clusters in the time frequency block. The base station may form each of multiple basis vectors with multiple versions of the sequence assigned to the terminal and may process the received pilot symbols with the multiple basis vectors to obtain a channel estimate for the terminal.
摘要翻译：描述用于发送导频和处理接收导频以获得信道和干扰估计的技术。终端可以基于第一序列在时间频率块中生成用于第一簇的导频符号，并且可以基于第二序列在时间频率块中生成用于第二簇的导频符号。第一和第二序列可以包括以不同顺序排列的公共元素，并且可以被认为是单个序列的不同版本。终端可以在它们各自的簇中发送导频符号。基站可以在时间频率块中从多个簇获得接收到的导频符号。基站可以形成分配给终端的序列的多个版本的多个基本向量中的每一个，并且可以用多个基本向量处理所接收的导频符号以获得终端的信道估计。

4. 发明授权

US08612502B2 Simplified equalization for correlated channels in OFDMA 有权
标题翻译： OFDMA中相关频道的简化均衡
公开(公告)号：US08612502B2
公开(公告)日：2013-12-17
申请号：US12052248
申请日：2008-03-20
申请人： Petru Cristian Budianu , Hermanth Sampath , Alexei Gorokhov , Dhananjay A. Gore
发明人： Petru Cristian Budianu , Hermanth Sampath , Alexei Gorokhov , Dhananjay A. Gore
IPC分类号： G06F7/38
CPC分类号： H04L5/023 , H04L25/0232 , H04L25/0244 , H04L25/03019 , H04L27/2647 , H04L2025/03414 , H04L2025/03426
摘要： Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Multiple transmit and/or receive antennas and utilize MIMO technology to enhance performance. A single tile of transmitted data, including a set of modulation symbols, can be received at multiple receive antennas, resulting in multiple tiles of received modulation symbols. Corresponding modulation symbols from multiple received tiles can be processed as a function of channel and interference estimates to generate a single equalized modulation symbol. Typically, the equalization process is computationally expensive. However, the channels are highly correlated. This correlation is reflected in the channel estimates and can be utilized to reduce complex equalization operations. In particular, a subset of the equalizers can be generated based upon the equalizer function and the remainder can be generated using interpolation. In addition, the equalizer function itself can be simplified.
摘要翻译：描述了促进无线通信环境中的接收信号的均衡的系统和方法。多个发射和/或接收天线并利用MIMO技术来提高性能。可以在多个接收天线处接收包括一组调制符号的传输数据的单个瓦片，从而导致接收到的调制符号的多个瓦片。来自多个接收瓦片的相应调制符号可以作为信道和干扰估计的函数来处理，以生成单个均衡调制符号。通常，均衡过程在计算上是昂贵的。然而，这些渠道是高度相关的。该相关性反映在信道估计中，并且可以用于减少复数均衡操作。特别地，可以基于均衡器功能生成均衡器的子集，并且可以使用插值来生成余数。此外，均衡器功能本身可以简化。

5. 发明授权

US08130867B2 Pilot design for improved channel and interference estimation 有权
标题翻译：用于改进通道和干扰估计的导频设计
公开(公告)号：US08130867B2
公开(公告)日：2012-03-06
申请号：US11691243
申请日：2007-03-26
申请人： Petru Cristian Budianu , Dhananjay A. Gore , Alexei Gorokhov
发明人： Petru Cristian Budianu , Dhananjay A. Gore , Alexei Gorokhov
IPC分类号： H04L27/00
CPC分类号： H04L25/0202 , H04L5/0023 , H04L5/0048
摘要： Techniques for transmitting pilot and for processing received pilot to obtain channel and interference estimates are described. A terminal may generate pilot symbols for a first cluster in a time frequency block based on a first sequence and may generate pilot symbols for a second cluster in the time frequency block based on a second sequence. The first and second sequences may include common elements arranged in different orders and may be considered as different versions of a single sequence. The terminal may transmit the pilot symbols in their respective clusters. A base station may obtain received pilot symbols from multiple clusters in the time frequency block. The base station may form each of multiple basis vectors with multiple versions of the sequence assigned to the terminal and may process the received pilot symbols with the multiple basis vectors to obtain a channel estimate for the terminal.
摘要翻译：描述用于发送导频和处理接收导频以获得信道和干扰估计的技术。终端可以基于第一序列在时间频率块中生成用于第一簇的导频符号，并且可以基于第二序列在时间频率块中生成用于第二簇的导频符号。第一和第二序列可以包括以不同顺序排列的公共元素，并且可以被认为是单个序列的不同版本。终端可以在它们各自的簇中发送导频符号。基站可以在时间频率块中从多个簇获得接收到的导频符号。基站可以形成分配给终端的序列的多个版本的多个基本向量中的每一个，并且可以用多个基本向量处理所接收的导频符号以获得终端的信道估计。

6. 发明申请

US20080235311A1 SIMPLIFIED EQUALIZATION FOR CORRELATED CHANNELS IN OFDMA 有权
标题翻译： OFDMA中相关通道的简化均衡
公开(公告)号：US20080235311A1
公开(公告)日：2008-09-25
申请号：US12052248
申请日：2008-03-20
申请人： Petru Cristian Budianu , Hemanth Sampath , Alexei Gorokhov , Dhananjay A. Gore
发明人： Petru Cristian Budianu , Hemanth Sampath , Alexei Gorokhov , Dhananjay A. Gore
IPC分类号： G06F17/17
CPC分类号： H04L5/023 , H04L25/0232 , H04L25/0244 , H04L25/03019 , H04L27/2647 , H04L2025/03414 , H04L2025/03426
摘要： Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Multiple transmit and/or receive antennas and utilize MIMO technology to enhance performance. A single tile of transmitted data, including a set of modulation symbols, can be received at multiple receive antennas, resulting in multiple tiles of received modulation symbols. Corresponding modulation symbols from multiple received tiles can be processed as a function of channel and interference estimates to generate a single equalized modulation symbol. Typically, the equalization process is computationally expensive. However, the channels are highly correlated. This correlation is reflected in the channel estimates and can be utilized to reduce complex equalization operations. In particular, a subset of the equalizers can be generated based upon the equalizer function and the remainder can be generated using interpolation. In addition, the equalizer function itself can be simplified.
摘要翻译：描述了促进无线通信环境中的接收信号的均衡的系统和方法。多个发射和/或接收天线并利用MIMO技术来提高性能。可以在多个接收天线处接收包括一组调制符号的传输数据的单个瓦片，从而导致接收到的调制符号的多个瓦片。来自多个接收瓦片的相应调制符号可以作为信道和干扰估计的函数来处理，以生成单个均衡调制符号。通常，均衡过程在计算上是昂贵的。然而，这些渠道是高度相关的。该相关性反映在信道估计中，并且可以用于减少复数均衡操作。特别地，可以基于均衡器功能生成均衡器的子集，并且可以使用插值来生成余数。此外，均衡器功能本身可以简化。

7. 发明申请

US20080232484A1 METHOD AND APPARATUS FOR IMPROVED ESTIMATION OF SELECTIVE CHANNELS IN AN OFDMA SYSTEM WITH DEDICATED PILOT TONES 有权
标题翻译：用于改进在具有专用引航权的OFDMA系统中选择性信道估计的方法和装置
公开(公告)号：US20080232484A1
公开(公告)日：2008-09-25
申请号：US11690658
申请日：2007-03-23
申请人： Petru Cristian Budianu , Alexei Gorokhov , Dhananjay A. Gore
发明人： Petru Cristian Budianu , Alexei Gorokhov , Dhananjay A. Gore
IPC分类号： H04B3/10
CPC分类号： H04L25/0228 , H04L5/0051 , H04L25/021 , H04L25/0226 , H04L25/0248 , H04L25/03866
摘要： The present disclosure provides a method and apparatus of channel estimation for a wireless communication system. Dedicated pilot symbols transmitted over at least one time-frequency region for at least one user are received. Channel parameters are estimated for the at least one time-frequency region based on the received dedicated pilot symbols.
摘要翻译：本公开提供了一种用于无线通信系统的信道估计的方法和装置。接收通过至少一个用户的至少一个时间 - 频率区域发送的专用导频符号。基于所接收的专用导频符号，估计对于至少一个时间 - 频率区域的信道参数。

8. 发明申请

US20100330946A1 ENHANCED INTERFERENCE NULLING EQUALIZATION 有权
标题翻译：增强干扰消除均衡
公开(公告)号：US20100330946A1
公开(公告)日：2010-12-30
申请号：US12491122
申请日：2009-06-24
申请人： Sony J. Akkarakaran , Alexei Y. Gorokhov , Dhananjay A. Gore
发明人： Sony J. Akkarakaran , Alexei Y. Gorokhov , Dhananjay A. Gore
IPC分类号： H04B1/06
CPC分类号： H04B7/0871 , H01Q1/246 , H01Q3/2617 , H04B7/0854 , H04B7/0857 , H04B7/0885
摘要： Systems and methodologies are described that facilitate combining received signals from multiple receive antennas in a wireless communication environment. The received signals from the multiple receive antennas can be weighted utilizing an adaptive combination of maximal ratio combining (MRC) and interference nulling. The combination of MRC and interference nulling can be controlled based upon one or more configurable parameters. For instance, a covariance matrix can be modified to include the one or more configurable parameters, and the modified covariance matrix can be utilized in connection with interference nulling. Further, respective values for the one or more configurable parameters can be selected as a function of at least one input (e.g., measured interference-over-thermal (IoT) value, received loading level indicator, eigenvalue distribution of a covariance matrix, . . . ) related to noise correlation.
摘要翻译：描述了在无线通信环境中有助于组合来自多个接收天线的接收信号的系统和方法。可以使用最大比组合（MRC）和干扰归零的自适应组合来加权来自多个接收天线的接收信号。可以基于一个或多个可配置参数来控制MRC和干扰归零的组合。例如，可以修改协方差矩阵以包括一个或多个可配置参数，并且修改的协方差矩阵可以与干扰归零结合使用。此外，可以根据至少一个输入（例如，测量的过热干扰（IoT）值，接收负载水平指示符，协方差矩阵的特征值分布等来选择一个或多个可配置参数的相应值。。）与噪声相关。

9. 发明授权

US08396438B2 Enhanced interference nulling equalization 有权
标题翻译：增强干扰归零均衡
公开(公告)号：US08396438B2
公开(公告)日：2013-03-12
申请号：US12491122
申请日：2009-06-24
申请人： Sony J. Akkarakaran , Alexei Y. Gorokhov , Dhananjay A. Gore
发明人： Sony J. Akkarakaran , Alexei Y. Gorokhov , Dhananjay A. Gore
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H04B7/0871 , H01Q1/246 , H01Q3/2617 , H04B7/0854 , H04B7/0857 , H04B7/0885
摘要： Systems and methodologies are described that facilitate combining received signals from multiple receive antennas in a wireless communication environment. The received signals from the multiple receive antennas can be weighted utilizing an adaptive combination of maximal ratio combining (MRC) and interference nulling. The combination of MRC and interference nulling can be controlled based upon one or more configurable parameters. For instance, a covariance matrix can be modified to include the one or more configurable parameters, and the modified covariance matrix can be utilized in connection with interference nulling. Further, respective values for the one or more configurable parameters can be selected as a function of at least one input (e.g., measured interference-over-thermal (IoT) value, received loading level indicator, eigenvalue distribution of a covariance matrix, . . . ) related to noise correlation.
摘要翻译：描述了在无线通信环境中有助于组合来自多个接收天线的接收信号的系统和方法。可以使用最大比组合（MRC）和干扰归零的自适应组合来加权来自多个接收天线的接收信号。可以基于一个或多个可配置参数来控制MRC和干扰归零的组合。例如，可以修改协方差矩阵以包括一个或多个可配置参数，并且修改的协方差矩阵可以与干扰归零结合使用。此外，可以根据至少一个输入（例如，测量的过热干扰（IoT）值，接收负载水平指示符，协方差矩阵的特征值分布等来选择一个或多个可配置参数的相应值。。）与噪声相关。

10. 发明授权

US06917820B2 Method and apparatus for selection and use of optimal antennas in wireless systems 有权
标题翻译：在无线系统中选择和使用最佳天线的方法和装置
公开(公告)号：US06917820B2
公开(公告)日：2005-07-12
申请号：US09769445
申请日：2001-01-26
申请人： Dhananjay A. Gore , Rohit U. Nabar , Arogyaswami Paulraj , Sumeet Sandhu
发明人： Dhananjay A. Gore , Rohit U. Nabar , Arogyaswami Paulraj , Sumeet Sandhu
IPC分类号： H04B7/06 , H04B7/08 , H04B1/38
CPC分类号： H04B7/0874 , H04B7/061 , H04B7/0639 , H04B7/0673 , H04B7/0691
摘要： A method and apparatus for selecting an optimal set of antennas from a plurality of antennas for use by a transmitter and/or receiver having a plurality of RF chains to transmit and/or receive a wireless signal on a wireless link. According to the invention information concerning transmission of wireless signals on the wireless link is determined and an optimal set of antennas from the plurality of antennas is selected based on the information. Thereafter, the RF chains are connected to the optimal set of antennas to permit transmission and/or reception of the wireless signal from the RF chains on the wireless link via the optimal set of antennas. The RF chains correspond in number to the number of antennas in the optimal set of antennas, and the number of antennas included in the plurality of antennas is greater than the number of RF chains.
摘要翻译：一种用于从多个天线中选择由具有多个RF链发射和/或接收无线信号上的无线信号的发射机和/或接收机使用的最佳天线组的方法和装置。根据本发明，确定关于无线链路上的无线信号的传输的信息，并且基于该信息选择来自多个天线的最佳天线组。此后，RF链连接到最佳的天线集合，以允许经由最佳天线组从无线链路上的RF链发射和/或接收无线信号。 RF链的数量与最佳天线集合中的天线数量相对应，并且包括在多个天线中的天线的数量大于RF链的数量。

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