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公开(公告)号：US08605808B2
公开(公告)日：2013-12-10
申请号：US12672273
申请日：2009-02-25
IPC分类号： H04B7/02
CPC分类号： H04B7/0854 , H04B7/0669 , H04B7/0891 , H04L1/0643
摘要： Disclosed is a method and system to detect data transmitted by multiple transmit antennas. The method comprises selecting a starting data block that is either a random data block or an output data block from known detectors. Also, the method comprises changing each symbol of the starting data block one symbol at a time to identify a data block which has minimum euclidean distance from the starting data block as detected data block. Next, changing two symbols of the detected data block at a time to identify a data block which has minimum euclidean distance from the starting data block as second data block and assigning the second data block as the starting data block. Repeating the above steps, if the minimum euclidean distance of second data block is better than that of the detected data block, and determining the detected data block as the data transmitted.
摘要翻译： 公开了一种检测由多个发射天线发射的数据的方法和系统。 该方法包括从已知检测器中选择作为随机数据块或输出数据块的起始数据块。 此外，该方法包括一次改变一个符号的起始数据块的每个符号，以识别作为检测数据块的起始数据块具有最小欧几里德距离的数据块。 接下来，一次改变检测数据块的两个符号，以识别从起始数据块具有最小欧几里得距离的数据块作为第二数据块，并将第二数据块分配为起始数据块。 重复上述步骤，如果第二数据块的最小欧几里德距离比检测到的数据块的最小欧几里德距离更好，并且将检测到的数据块确定为所发送的数据。
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2.发明授权公开(公告)号：US08116411B2
公开(公告)日：2012-02-14
申请号：US11842963
申请日：2007-08-22
申请人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Kalepalli Vishnu Vardhan , Saif Khan Mohammed
发明人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Kalepalli Vishnu Vardhan , Saif Khan Mohammed
IPC分类号： H04L27/06
CPC分类号： H04L1/0631 , H04L1/0643 , H04L1/0656 , H04L2025/03414 , H04L2025/03426
摘要： A method to detect data transmitted from multiple antennas, said method comprising steps of: selecting a starting data block and calling it as previous data block; defining a set of indices of bits to be checked for possible flip in the previous data block as a check candidate set; applying update rule to obtain updated data block using the previous data block and the check candidate set, wherein the update is made in such a manner that change in likelihood is positive; checking if the updated data block and several consecutive previous data blocks are the same; if yes, declare the updated data block as the detected data block; if no, make updated data block as previous data block and repeat updation of data block.
摘要翻译： 一种检测从多个天线发送的数据的方法，所述方法包括以下步骤：选择起始数据块并将其称为先前的数据块; 定义一组待检查的位的索引索引，作为检查候选集合在先前数据块中的可能翻转; 应用更新规则以使用所述先前数据块和所述检查候选集获得更新的数据块，其中所述更新以可能性变化为正的方式进行; 检查更新的数据块和几个连续的先前数据块是否相同; 如果是，则将更新的数据块声明为检测到的数据块; 如果没有，则将更新的数据块作为先前的数据块并重新更新数据块。
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3.发明授权System and method for reducing call dropping rates in a multi-beam communication system 有权用于降低多光束通信系统中的呼叫丢弃率的系统和方法公开(公告)号：US06714780B1
公开(公告)日：2004-03-30
申请号：US09722001
申请日：2001-06-12
申请人： Franklin P. Antonio , Gene W. Marsh , Richard A. Stewart , Marie M. Bjerede , Ananthanarayanan Chockalingam , Arthur S. Kerns , Brian Butler , Matthew S. Grob , James T. Determan , Douglas Grover , Leonard N. Schiff , William G. Ames
发明人： Franklin P. Antonio , Gene W. Marsh , Richard A. Stewart , Marie M. Bjerede , Ananthanarayanan Chockalingam , Arthur S. Kerns , Brian Butler , Matthew S. Grob , James T. Determan , Douglas Grover , Leonard N. Schiff , William G. Ames
IPC分类号： H04Q720
CPC分类号： H04B7/18534
摘要： A method for reducing call dropping rates in a multi-beam communication system. The multi-beam communication system includes a user terminal, a gateway, and a plurality of beam sources, where each beam source projects a plurality of beams, and where a communication link between the user terminal and the gateway is established on one or more beams. The method according to the present invention relies on a messaging protocol between the gateway and the user terminal. Based on messages sent from the user terminal to the gateway, preferably on a preselected periodic basis, the gateway can determine the more desirable beam(s) for transmitting data or information to the user terminal. The messages sent from the user terminal to the gateway contain values representing beam strengths as measured at the user terminal. The gateway uses the user terminal measured beam strengths to select the beams that should be used for transmitting data or information to the user terminal. The beams that should be used are the beams that if used will decrease the call dropping rates and provide a desired level of beam source diversity.
摘要翻译： 一种用于在多光束通信系统中降低呼叫丢弃率的方法。 多波束通信系统包括用户终端，网关和多个波束源，其中每个波束源投射多个波束，并且在一个或多个波束上建立用户终端和网关之间的通信链路 。 根据本发明的方法依赖于网关与用户终端之间的消息协议。 基于从用户终端发送到网关的消息，优选地以预选的周期性基础，网关可以确定用于向用户终端发送数据或信息的更理想的波束。 从用户终端发送到网关的消息包含表示在用户终端测量的波束强度的值。 网关使用用户终端测量的光束强度来选择应用于向用户终端发送数据或信息的光束。 应该使用的波束是如果使用的波束将降低呼叫丢弃率并提供期望的波束源分集水平。
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4.发明申请MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) TRANSMITTED SIGNAL VECTOR ESTIMATION EMPLOYING MONTE CARLO SAMPLING TECHNIQUES 失效使用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
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。
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公开(公告)号：US08320432B1
公开(公告)日：2012-11-27
申请号：US12430635
申请日：2009-04-27
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。
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公开(公告)号：US20110069746A1
公开(公告)日：2011-03-24
申请号：US12672273
申请日：2009-02-25
CPC分类号： H04B7/0854 , H04B7/0669 , H04B7/0891 , H04L1/0643
摘要： The present invention relates to a system and a multistage signal detection method to jointly detect the data symbols transmitted from multiple transmit antennas in a communication terminal and received using multiple receive antennas in another communication terminal.
摘要翻译： 本发明涉及一种系统和多级信号检测方法，用于共同检测在通信终端中从多个发射天线发射并在另一通信终端中使用多个接收天线接收的数据符号。
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7.发明申请公开(公告)号：US20090041145A1
公开(公告)日：2009-02-12
申请号：US11842963
申请日：2007-08-22
申请人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Kalepalli Vishnu Vardhan , Saif Khan Mohammed
发明人： Ananthanarayanan Chockalingam , Balaji Sundar Rajan , Kalepalli Vishnu Vardhan , Saif Khan Mohammed
CPC分类号： H04L1/0631 , H04L1/0643 , H04L1/0656 , H04L2025/03414 , H04L2025/03426
摘要： A method to detect data transmitted from multiple antennas, said method comprising steps of: selecting a starting data block and calling it as previous data block; defining a set of indices of bits to be checked for possible flip in the previous data block as a check candidate set; applying update rule to obtain updated data block using the previous data block and the check candidate set, wherein the update is made in such a manner that change in likelihood is positive; checking if the updated data block and several consecutive previous data blocks are the same; if yes, declare the updated data block as the detected data block; if no, make updated data block as previous data block and repeat updation of data block. FIG. 14
摘要翻译： 一种检测从多个天线发送的数据的方法，所述方法包括以下步骤：选择起始数据块并将其称为先前的数据块; 定义一组待检查的位的索引索引，作为检查候选集合在先前数据块中的可能翻转; 应用更新规则以使用所述先前数据块和所述检查候选集获得更新的数据块，其中所述更新以可能性变化为正的方式进行; 检查更新的数据块和几个连续的先前数据块是否相同; 如果是，则将更新的数据块声明为检测到的数据块; 如果没有，则将更新的数据块作为先前的数据块并重新更新数据块。
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8.发明授权System and method for resolving frequency and timing uncertainty in access transmissions in a spread spectrum communication system 有权用于在扩频通信系统中解决接入传输中的频率和定时不确定性的系统和方法公开(公告)号：US07301915B2
公开(公告)日：2007-11-27
申请号：US10074060
申请日：2002-02-11
IPC分类号： H04B7/185
CPC分类号： H04B7/216
摘要： A method for reducing the number of required frequency and time hypotheses to acquire an access transmission in a satellite communication system. By reducing the number of required hypotheses, the amount of hardware required to acquire the access transmission is reduced. The method of the present invention reduces the number of required hypotheses by reducing the range of possible frequency and timing values of the access transmission. The range of possible frequency and timing values is reduced by determining the frequency and time uncertainties over individual satellite beams rather than over an entire satellite footprint.
摘要翻译： 一种用于减少在卫星通信系统中获取接入传输的所需频率和时间假设的数量的方法。 通过减少所需假设的数量，减少了获取接入传输所需的硬件数量。 本发明的方法通过减少接入传输的可能的频率和定时值的范围来减少所需假设的数量。 可以通过确定单个卫星波束的频率和时间不确定度而不是整个卫星覆盖范围来减小可能的频率和定时值的范围。
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9.发明授权System and method for resolving frequency and timing uncertainty in access transmissions in a spread spectrum communication system 有权用于在扩频通信系统中解决接入传输中的频率和定时不确定性的系统和方法公开(公告)号：US06381225B1
公开(公告)日：2002-04-30
申请号：US09140936
申请日：1998-08-27
IPC分类号： H04B7185
CPC分类号： H04B7/216
摘要： A method for reducing the number of required frequency and time hypotheses to acquire an access transmission in a satellite communication system. By reducing the number of required hypotheses, the amount of hardware required to acquire the access transmission is reduced. The method of the present invention reduces the number of required hypotheses by reducing the range of possible frequency and timing values of the access transmission. The range of possible frequency and timing values is reduced by determining the frequency and time uncertainties over individual satellite beams rather than over an entire satellite footprint.
摘要翻译： 一种用于减少在卫星通信系统中获取接入传输的所需频率和时间假设的数量的方法。 通过减少所需假设的数量，减少了获取接入传输所需的硬件数量。 本发明的方法通过减少接入传输的可能的频率和定时值的范围来减少所需假设的数量。 可以通过确定单个卫星波束的频率和时间不确定度而不是整个卫星覆盖范围来减小可能的频率和定时值的范围。
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10.发明授权System and method for reducing call dropping rates in a multi-beam communication system 失效用于降低多光束通信系统中的呼叫丢弃率的系统和方法公开(公告)号：US06208858B1
公开(公告)日：2001-03-27
申请号：US09120857
申请日：1998-07-21
申请人： Franklin P. Antonio , Gene W. Marsh , Richard A. Stewart , Marie M. Bjerede , Ananthanarayanan Chockalingam , Arthur S. Kerns , Brian Butler , Matthew S. Grob , James T. Determan , Douglas Grover , Leonard N. Schiff , William G. Ames
发明人： Franklin P. Antonio , Gene W. Marsh , Richard A. Stewart , Marie M. Bjerede , Ananthanarayanan Chockalingam , Arthur S. Kerns , Brian Butler , Matthew S. Grob , James T. Determan , Douglas Grover , Leonard N. Schiff , William G. Ames
IPC分类号： H04Q720
CPC分类号： H04B7/18534
摘要： A method for reducing call dropping rates in a multi-beam communication system. The multi-beam communication system includes a user terminal, a gateway, and a plurality of beam sources, where each beam source projects a plurality of beams, and where a communication link between the user terminal and the gateway is established on one or more beams. The method according to the present invention relies on a messaging protocol between the gateway and the user terminal. Based on messages sent from the user terminal to the gateway, preferably on a preselected periodic basis, the gateway can determine the more desirable beam(s) for transmitting data or information to the user terminal. The messages sent from the user terminal to the gateway contain values representing beam strengths as measured at the user terminal. The gateway uses the user terminal measured beam strengths to select the beams that should be used for transmitting data or information to the user terminal. The beams that should be used are the beams that if used will decrease the call dropping rates and provide a desired level of beam source diversity.
摘要翻译： 一种用于在多光束通信系统中降低呼叫丢弃率的方法。 多波束通信系统包括用户终端，网关和多个波束源，其中每个波束源投射多个波束，并且在一个或多个波束上建立用户终端和网关之间的通信链路 。 根据本发明的方法依赖于网关与用户终端之间的消息协议。 基于从用户终端发送到网关的消息，优选地以预选的周期性基础，网关可以确定用于向用户终端发送数据或信息的更理想的波束。 从用户终端发送到网关的消息包含表示在用户终端测量的波束强度的值。 网关使用用户终端测量的光束强度来选择应用于向用户终端发送数据或信息的光束。 应该使用的波束是如果使用的波束将降低呼叫丢弃率并提供期望的波束源分集水平。
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