专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20140133591A1 MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) TRANSMITTED SIGNAL VECTOR ESTIMATION EMPLOYING MONTE CARLO SAMPLING TECHNIQUES 审中-公开
标题翻译：使用MONTE CARLO采样技术的多输入多输出（MIMO）传输信号矢量估计
公开(公告)号：US20140133591A1
公开(公告)日：2014-05-15
申请号：US14159461
申请日：2014-01-21
申请人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Tanumay Datta , Ashok Kumar. N
发明人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Tanumay Datta , Ashok Kumar. N
IPC分类号： H04B7/04
CPC分类号： H04B7/0413 , H04L25/03203 , H04L25/03891
摘要： A method of determining a transmitted vector (x) in a MIMO receiver includes the steps of receiving a received vector (y) representative of the transmitted vector (x), generating a first random number and forming, in a first iteration, a first symbol of a first candidate vector, the candidate vector representing a potential solution vector. The step of forming is based on a first approach if the first random number is greater than a first predetermined value (q), but is based on a second approach if the random number is less than or equal to the first predetermined value (q). The first approach randomly selects the first symbol from a uniform distribution of symbols in the transmission alphabet. The second approach selects the first symbol based on Gibbs sampling. The method represents a randomized Markov Chain Monte Carlo (RMCMC) sampling technique.
摘要翻译：一种在MIMO接收机中确定发射矢量（x）的方法包括以下步骤：接收表示所发射矢量（x）的接收矢量（y），产生第一随机数，并在第一迭代中形成第一符号第一候选向量，候选向量表示潜在的解向量。如果第一随机数大于第一预定值（q），则形成步骤基于第一方法，但是如果随机数小于或等于第一预定值（q），则基于第二方法，。第一种方法是从发送字母表中的符号的均匀分布中随机选择第一个符号。第二种方法选择基于吉布斯抽样的第一个符号。该方法代表随机的马尔可夫链蒙特卡罗（RMCMC）采样技术。

2. 发明授权

US08503544B2 Techniques for decoding transmitted signals using reactive taboo searches (RTS) 有权
标题翻译：使用反应式禁忌搜索（RTS）对发送信号进行解码的技术
公开(公告)号：US08503544B2
公开(公告)日：2013-08-06
申请号：US12771730
申请日：2010-04-30
申请人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Srinidhi Nagaraja , Saif Khan Mohammed
发明人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Srinidhi Nagaraja , Saif Khan Mohammed
IPC分类号： H04L27/00
CPC分类号： H04B7/0413 , H04L1/0631 , H04L25/0204 , H04L25/03178 , H04L25/03331
摘要： Techniques for enabling an estimate of a transmitted signal vector, given a received signal vector and a channel matrix to be computed, are provided. An initial solution signal vector for the estimate is calculated, and based on the initial estimate, a pool of possible solutions is generated. Methods described herein may be iterative in nature, and may cycle through possible estimates of the transmitted signal vector so as to continually improve the estimates and the pool of possible estimates. The methods may terminate once stopping criteria are reached. In some example methods, solutions may be marked at taboo and a taboo period can be established that indicates a number of subsequent iterations for which the current solution signal vector cannot be considered.
摘要翻译：提供给定接收信号向量和要计算的信道矩阵的用于使发送信号向量的估计的技术。计算用于估计的初始解信号向量，并且基于初始估计，生成可能解的池。本文描述的方法本质上可以是迭代的，并且可以循环通过传输的信号向量的可能估计，以便不断改进估计和可能估计的汇总。一旦达到停止标准，方法可能会终止。在一些示例性方法中，可以在禁忌中标记解，并且可以建立禁忌期，其指示不能考虑当前解信号向量的多个后续迭代。

3. 发明申请

US20130022188A1 DIRECTORY ASSISTANCE SERVICE BASED ON CONTEXT IDENTIFIER 有权
标题翻译：基于语境标识符的目录辅助服务
公开(公告)号：US20130022188A1
公开(公告)日：2013-01-24
申请号：US13188500
申请日：2011-07-22
申请人： Sundar Rajan Padmanabhan , Apurva Pathak
发明人： Sundar Rajan Padmanabhan , Apurva Pathak
IPC分类号： H04M3/487
CPC分类号： H04M3/4931 , H04M2203/2038
摘要： Methods and systems are disclosed for providing context information pertaining to a request of a directory assistance operator service based on a context identifier. The context identifier permits the directory assistance operator service to obtain context information including a location of the user and a location relevant to a directory listing search. The context identifier also can be used to pass context information or directory listing information across multiple types of user devices that use different types of services including a television service, a mobile service, a landline telephone service, and Internet service, and third party devices to permit enhanced directory assistance services to be provided to the user.
摘要翻译：公开了用于基于上下文标识符提供与目录辅助操作员服务的请求有关的上下文信息的方法和系统。上下文标识符允许目录帮助操作员服务获得包括用户的位置和与目录列表搜索相关的位置的上下文信息。上下文标识符还可用于跨越使用不同类型的服务的多种类型的用户设备传递上下文信息或目录列表信息，包括电视服务，移动服务，陆线电话服务和因特网服务，以及第三方设备允许向用户提供增强的目录帮助服务。

4. 发明授权

US08111779B2 Data transmission in wireless communication system 有权
标题翻译：无线通信系统中的数据传输
公开(公告)号：US08111779B2
公开(公告)日：2012-02-07
申请号：US12420984
申请日：2009-04-09
申请人： Balaji Sundar Rajan , Pavan Koteshwar Srinath
发明人： Balaji Sundar Rajan , Pavan Koteshwar Srinath
IPC分类号： H04L27/00
CPC分类号： H04L27/3427 , H04L1/0071 , H04L1/0625 , H04L1/0631 , H04L1/0637
摘要： Embodiments of the disclosure set forth methods for transmitting data in a wireless communication system. Some example methods include converting a data stream to a symbol set and selecting a first plurality of symbols from the symbol set. The first plurality of symbols includes at least a first symbol, a second symbol, a third symbol, a fourth symbol, a fifth symbol, a sixth symbol, a seventh symbol, and a eighth symbol. The methods include generating one or plurality of symbols of a second plurality of symbols based on interleaving two symbols selected from the first plurality of symbols. The methods further include weighting some symbols of the second plurality of symbols and generating a matrix based on symbols selected from the second plurality of symbols and the weighted symbols. The methods also include encoding the data stream based on the matrix.
摘要翻译：本公开的实施例阐述了在无线通信系统中发送数据的方法。一些示例性方法包括将数据流转换为符号集合并从符号集合中选择第一多个符号。第一多个符号至少包括第一符号，第二符号，第三符号，第四符号，第五符号，第六符号，第七符号和第八符号。所述方法包括基于从所述第一多个符号中选择的两个符号的交织来生成第二多个符号的一个或多个符号。所述方法还包括对第二多个符号中的一些符号进行加权，并且基于从第二多个符号和加权符号中选择的符号生成矩阵。该方法还包括基于矩阵对数据流进行编码。

5. 发明申请

US20100260280A1 DATA TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：无线通信系统中的数据传输
公开(公告)号：US20100260280A1
公开(公告)日：2010-10-14
申请号：US12420984
申请日：2009-04-09
申请人： Balaji Sundar Rajan , Pavan Koteshwar Srinath
发明人： Balaji Sundar Rajan , Pavan Koteshwar Srinath
IPC分类号： H04B7/02 , H04L27/00
CPC分类号： H04L27/3427 , H04L1/0071 , H04L1/0625 , H04L1/0631 , H04L1/0637
摘要： Embodiments of the disclosure set forth methods for transmitting data in a wireless communication system. Some example methods include converting a data stream to a symbol set and selecting a first plurality of symbols from the symbol set. The first plurality of symbols includes at least a first symbol, a second symbol, a third symbol, a fourth symbol, a fifth symbol, a sixth symbol, a seventh symbol, and a eighth symbol. The methods include generating one or plurality of symbols of a second plurality of symbols based on interleaving two symbols selected from the first plurality of symbols. The methods further include weighting some symbols of the second plurality of symbols and generating a matrix based on symbols selected from the second plurality of symbols and the weighted symbols. The methods also include encoding the data stream based on the matrix.
摘要翻译：本公开的实施例阐述了在无线通信系统中发送数据的方法。一些示例性方法包括将数据流转换为符号集合并从符号集合中选择第一多个符号。第一多个符号至少包括第一符号，第二符号，第三符号，第四符号，第五符号，第六符号，第七符号和第八符号。所述方法包括基于从所述第一多个符号中选择的两个符号的交织来生成第二多个符号的一个或多个符号。所述方法还包括对第二多个符号中的一些符号进行加权，并且基于从第二多个符号和加权符号中选择的符号生成矩阵。该方法还包括基于矩阵对数据流进行编码。

6. 发明申请

US20100254300A1 LEVERAGING COHERENT DISTRIBUTED SPACE-TIME CODES FOR NONCOHERENT COMMUNICATION IN RELAY NETWORKS VIA TRAINING 有权
标题翻译：在继电器网络中通过培训利用相关的分布式空间时间码
公开(公告)号：US20100254300A1
公开(公告)日：2010-10-07
申请号：US12419430
申请日：2009-04-07
申请人： Susinder Rajan GULASEKARAN , Balaji SUNDAR RAJAN
发明人： Susinder Rajan GULASEKARAN , Balaji SUNDAR RAJAN
IPC分类号： H04B7/14
CPC分类号： H04B7/155 , H04B7/2606
摘要： In a training cycle, a source node transmits at least one pilot symbol to relay nodes in a training cycle. The relay nodes each amplifies and forwards the pilot symbol to a destination node in an assigned time slot in the training cycle. The destination node sequentially receives multiple versions of the pilot symbol from the relay nodes and estimates channel information based on the multiple versions of the pilot symbol. In data transmission cycles that follow the training cycle, the nodes apply coherent distributed space-time block code (DSTBC) with the estimated channel information to communicate data symbols. The power allocation between training and data cycles may be adjusted to improve the error performance. The nodes may also apply orthogonal frequency division multiplexing (OFDM) based DSTBC when timing errors are not known.
摘要翻译：在训练周期中，源节点在训练周期中向中继节点发送至少一个导频符号。中继节点每个在训练周期中的指定时隙中放大并转发导频符号到目标节点。目的地节点从中继节点顺序地接收导频符号的多个版本，并基于导频符号的多个版本来估计信道信息。在训练周期之后的数据传输周期中，节点将相干分布空时块码（DSTBC）与所估计的信道信息一起应用以传送数据符号。可以调整训练和数据循环之间的功率分配，以改善误差性能。当定时误差未知时，节点还可以应用基于正交频分复用（OFDM）的DSTBC。

7. 发明授权

US07107383B1 Method and system for multi-channel transfer of data and control information 有权
标题翻译：多渠道传输数据和控制信息的方法与系统
公开(公告)号：US07107383B1
公开(公告)日：2006-09-12
申请号：US09564592
申请日：2000-05-03
申请人： Sundar Rajan
发明人： Sundar Rajan
IPC分类号： G06F13/36 , G06F13/20 , G06F13/40
CPC分类号： H04L29/06 , G06F13/128 , H04L49/90 , H04L69/14
摘要： A system and method for transferring information in a multi-channel, point-to-point environment are described. In one embodiment, a number of processing chips are connected to a bridge bus. A bridge is connected to the bridge bus and to a system bus. In addition, a memory is connected to the bridge.
摘要翻译：描述了用于在多通道点对点环境中传送信息的系统和方法。在一个实施例中，多个处理芯片连接到桥接总线。一个桥连接到桥接总线和一个系统总线。另外，一个存储器被连接到该桥。

8. 发明授权

US5940596A Clustered address caching system for a network switch 失效
标题翻译：网络交换机的集群地址缓存系统
公开(公告)号：US5940596A
公开(公告)日：1999-08-17
申请号：US905440
申请日：1997-08-04
申请人： Sundar Rajan , Kent Blair Dahlgren
发明人： Sundar Rajan , Kent Blair Dahlgren
IPC分类号： H04L12/56 , G06F15/163
CPC分类号： H04L49/30 , H04L49/1576 , H04L49/254 , H04L49/255 , H04L49/3009 , H04L49/309 , H04L2012/5679 , H04L49/45
摘要： A network switch forwards data packets between network stations connected to its input and output ports. Each data packet includes the network address of a destination station. The receiving input port consults an address translation system including a local address translation cache within each input port for caching recently used address-to-port translation information, a set of secondary address translation units each serving a separate cluster of input ports for caching a larger amount of recently used address translation information, and a main address translation unit storing address-to-port translation information for all network stations. An input port not having appropriate translation information in its local cache sends an address translation request to a secondary address translation unit. A secondary address translation unit not having appropriate address translation information to respond to the request, forwards the request to the main address translation unit. The main address translation unit returns the appropriate address translation information to the secondary address translation unit which caches that information and returns it to the requesting input port. The input port caches the information locally and then forwards the packet to the indicated output port.
摘要翻译：网络交换机在连接到其输入和输出端口的网络站之间转发数据包。每个数据包包括目的站的网络地址。接收输入端口参考包括每个输入端口内的本地地址转换缓存的地址转换系统，用于缓存最近使用的地址到端口转换信息;一组辅助地址转换单元，每个服务于单独的输入端口簇，用于缓存较大的最近使用的地址转换信息的量，以及存储针对所有网络站的地址到端口转换信息的主地址转换单元。在其本地高速缓存中不具有适当的翻译信息的输入端口向地址转换单元发送地址转换请求。没有适当地址转换信息以响应该请求的次要地址转换单元将该请求转发给主地址转换单元。主地址转换单元将适当的地址转换信息返回到辅助地址转换单元，其缓存该信息并将其返回给请求的输入端口。输入端口本地缓存信息，然后将数据包转发到指定的输出端口。

9. 发明申请

US20120307924A1 MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) TRANSMITTED SIGNAL VECTOR ESTIMATION EMPLOYING MONTE CARLO SAMPLING TECHNIQUES 失效
标题翻译：使用MONTE CARLO采样技术的多输入多输出（MIMO）传输信号矢量估计
公开(公告)号：US20120307924A1
公开(公告)日：2012-12-06
申请号：US13472519
申请日：2012-05-16
申请人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Tanumay Datta , Ashok Kumar. N
发明人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Tanumay Datta , Ashok Kumar. N
IPC分类号： H04L27/28
CPC分类号： H04B7/0413 , H04L25/03203 , H04L25/03891
摘要： A method of determining a transmitted vector (x) in a MIMO receiver includes the steps of receiving a received vector (y) representative of the transmitted vector (x), generating a first random number and forming, in a first iteration, a first symbol of a first candidate vector, the candidate vector representing a potential solution vector. The step of forming is based on a first approach if the first random number is greater than a first predetermined value (q), but is based on a second approach if the random number is less than or equal to the first predetermined value (q). The first approach randomly selects the first symbol from a uniform distribution of symbols in the transmission alphabet. The second approach selects the first symbol based on Gibbs sampling. The method represents a randomized Markov Chain Monte Carlo (RMCMC) sampling technique.
摘要翻译：一种在MIMO接收机中确定发射矢量（x）的方法包括以下步骤：接收表示所发射矢量（x）的接收矢量（y），产生第一随机数，并在第一迭代中形成第一符号第一候选向量，候选向量表示潜在的解向量。如果第一随机数大于第一预定值（q），则形成步骤基于第一方法，但是如果随机数小于或等于第一预定值（q），则基于第二方法，。第一种方法是从发送字母表中的符号的均匀分布中随机选择第一个符号。第二种方法选择基于吉布斯抽样的第一个符号。该方法代表随机的马尔可夫链蒙特卡罗（RMCMC）采样技术。

10. 发明授权

US08320432B1 Device and method for precoding vectors in a communication system 有权
标题翻译：通信系统中预编码矢量的装置和方法
公开(公告)号：US08320432B1
公开(公告)日：2012-11-27
申请号：US12430635
申请日：2009-04-27
申请人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Saif Khan Mohammed
发明人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Saif Khan Mohammed
IPC分类号： H04B1/38
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0626 , Y02D70/00 , Y02D70/142 , Y02D70/146 , Y02D70/444
摘要： A device and method for precoding vectors in a communication system is provided. A transmitter may precode a data vector using information regarding a communication channel prior to transmitting the data vector. The transmitter may precode the data vector in a manner that reduces an energy value of a resulting transmit data vector so as to minimize interference in a received signal at a receiver. The transmitter may perturb entries of the data vector one-by-one in an iterative fashion until a minimum in an energy value of the transmit data vector is obtained.
摘要翻译：提供了一种用于在通信系统中预编码矢量的装置和方法。发送器可以在发送数据向量之前使用关于通信信道的信息对数据向量进行预编码。发射机可以以降低所得到的发送数据向量的能量值的方式来对数据向量进行预编码，以便最小化在接收机处的接收信号中的干扰。发射机可以以迭代方式一个接一个地扰乱数据向量的条目，直到获得发送数据向量的能量值中的最小值。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式