Apparatus, method and computer program product providing a computationally efficient maximum likelihood joint synchronization and channel estimation algorithm
    1.
    发明申请
    Apparatus, method and computer program product providing a computationally efficient maximum likelihood joint synchronization and channel estimation algorithm 失效
    提供计算有效的最大似然联合同步和信道估计算法的装置,方法和计算机程序产品

    公开(公告)号:US20070133717A1

    公开(公告)日:2007-06-14

    申请号:US11298278

    申请日:2005-12-08

    申请人: Jae Son Anthony Reid

    发明人: Jae Son Anthony Reid

    IPC分类号: H03D1/00

    摘要: A method, computer program and apparatus operate so as to execute a two-dimensional (2-D) M survivor multi-resolution search algorithm and procedure for a signal received over a channel. The method includes, from one search stage to a next search stage, increasing parameter resolution while fixing a number of search operations at each search stage by a predetermined number of parameter survivors (M); and determining a Maximum Likelihood joint metric based on an accumulated value of survived search stages.

    摘要翻译: 一种方法,计算机程序和装置的操作,以执行通过信道接收的信号的二维(2-D)M幸存者多分辨率搜索算法和程序。 该方法包括从一个搜索阶段到下一个搜索阶段增加参数分辨率,同时在每个搜索阶段将预定数量的参数幸存者(M)固定多个搜索操作; 以及基于幸存的搜索阶段的累积值来确定最大似然联合度量。

    Multiple hypothesis channel estimation and prediction for OFDM systems
    2.
    发明授权
    Multiple hypothesis channel estimation and prediction for OFDM systems 失效
    OFDM系统的多重假设信道估计和预测

    公开(公告)号:US07356096B2

    公开(公告)日:2008-04-08

    申请号:US10892836

    申请日:2004-07-15

    申请人: Anthony Reid

    发明人: Anthony Reid

    IPC分类号: H04L27/06 H04B1/10

    摘要: A method of modeling channel parameters in Doppler environments estimates both the channel model and the coefficients simultaneously, thus not requiring additional packet overhead. This adaptive technique refines the channel coefficients as the estimate of the model accuracy improves with channel measurements. The underlying models are very accurate representations of Jakes models because they are computed off-line, thus the error prone approaches of trying to estimate one model from the observations are avoided.

    摘要翻译: 在多普勒环境中对信道参数建模的方法同时估计信道模型和系数,因此不需要额外的分组开销。 随着信道测量的改进,模型精度的估计可以改善信道系数。 底层模型是非常精确的Jakes模型的表示,因为它们是离线计算的,因此避免了从观察中估计一个模型的容易出错的方法。

    Joint feed-forward and feedback design for wireless communication systems
    3.
    发明申请
    Joint feed-forward and feedback design for wireless communication systems 审中-公开
    无线通信系统的前馈和反馈设计

    公开(公告)号:US20060233265A1

    公开(公告)日:2006-10-19

    申请号:US11107137

    申请日:2005-04-15

    IPC分类号: H04L27/00

    摘要: A first method comprises determining a condition of a buffer in a transmitter; using the condition, determining information corresponding to the condition; and communicating the information to a receiver. A second method is disclosed comprising receiving first information corresponding to a condition of a buffer in a transmitter; determining channel state information for a channel from the transmitter to the receiver; using the first information and the determined channel state information, determining second information; and communicating the second information to the transmitter. The second information and the condition of the buffer may be used by the transmitter to determine at least one transmission parameter, e.g., one or both of transmission rate and transmission power for a signal from the transmitter to the receiver. A desired delay constraint for packet traffic over the channel may be achieved.

    摘要翻译: 第一方法包括确定发射机中的缓冲器的状况; 使用该条件,确定与条件相对应的信息; 并将信息传送到接收器。 公开了一种第二种方法,包括:接收与发送器中的缓冲器的条件相对应的第一信息; 确定从发射机到接收机的信道的信道状态信息; 使用所述第一信息和所确定的信道状态信息,确定第二信息; 以及将所述第二信息传送到所述发射机。 发送器可以使用第二信息和缓冲器的条件来确定至少一个传输参数,例如,用于从发射机到接收机的信号的传输速率和传输功率中的一个或两个。 可以实现在信道上的分组业务的期望的延迟约束。

    System and method for indicating a change between images
    4.
    发明授权
    System and method for indicating a change between images 失效
    用于指示图像之间的变化的系统和方法

    公开(公告)号:US5500904A

    公开(公告)日:1996-03-19

    申请号:US873932

    申请日:1992-04-22

    IPC分类号: G06T7/20 G06K9/00

    CPC分类号: G06T7/2066

    摘要: A method and system are provided for indicating a change between a first image and a second image. In a first aspect, a sequence of images is sensed (304, 310) including the first and second image. The first image is previous in the sequence to the second image. Each image previous in the sequence to the second image is processed generating a first processed image (312). The first processed image and the second image are then processed generating a second processed image (316, 312). The first processed image and the second processed image are then processed generating an optical flow field (314). The optical flow field shows the change between the first image and the second image. In a second aspect, a first sequence of images including the first image is sensed (206). A second sequence of images including the second image is sensed (206). The first sequence is processed generating a first processed image (210). The second sequence is also processed generating a second processed image (208). The first processed image and the second processed image are then processed generating an optical flow field (216). This optical flow field also indicates the change between the first image and the second image.

    摘要翻译: 提供了一种用于指示第一图像和第二图像之间的变化的方法和系统。 在第一方面,感测包括第一和第二图像的图像序列(304,310)。 第一个图像是与第二个图像顺序相同的先前图像。 对与第二图像的顺序中的先前的每个图像进行处理,生成第一处理图像(312)。 然后处理第一处理图像和第二图像,生成第二处理图像(316,312)。 然后处理第一处理图像和第二处理图像,产生光流场(314)。 光流场显示第一图像和第二图像之间的变化。 在第二方面,感测包括第一图像的第一图像序列(206)。 感测包括第二图像的第二序列图像(206)。 处理第一序列,生成第一处理图像(210)。 还处理第二序列,生成第二处理图像(208)。 然后处理第一处理图像和第二处理图像,产生光流场(216)。 该光流场还指示第一图像和第二图像之间的变化。

    Buffer storage assignment arrangement for time-division switching systems
    5.
    发明授权
    Buffer storage assignment arrangement for time-division switching systems 失效
    时分交换系统的缓冲存储分配方案

    公开(公告)号:US4131762A

    公开(公告)日:1978-12-26

    申请号:US796971

    申请日:1977-05-16

    申请人: Anthony Reid

    发明人: Anthony Reid

    IPC分类号: H04Q11/04 H04J3/02

    CPC分类号: H04Q11/0407

    摘要: A time-division switching system having a space-division network with a plurality of input terminals, each uniquely associated with a first buffer memory, and a plurality of output terminals, each uniquely associated with a second buffer memory, is disclosed. Time-shared communication paths through the space-division network are predominately completed such that digital data words representing signals from both parties to a conversation are transmitted through the space-division network during the same time slot. Normally, data words representing signals from telephone subscribers are assigned to first buffer memories in accordance with a fixed distribution plan. The system includes an arrangement which modifies the fixed distribution plan when it is determined that both parties to a conversation will have their data words stored in the same first buffer memory and switches data words representing signals from the called party of the conversation to an idle storage location in a different first buffer memory. An arrangement is also disclosed to recoordinate data words read from the second buffer memories to remove any possible conflicts caused by the redistribution of the input data words.

    摘要翻译: 公开了具有与第一缓冲存储器唯一相关联的多个输入端的空分网络和与第二缓冲存储器唯一相关联的多个输出端的时分交换系统。 主要完成通过空分网络的时间共享通信路径,使得在相同时隙期间通过空分网络传送表示双方对话的信号的数字数据字。 通常,根据固定分配计划,将表示来自电话用户的信号的数据字分配给第一缓冲存储器。 该系统包括当确定会话的双方将其数据字存储在相同的第一缓冲存储器中并且将表示来自被叫方的信号的数据字切换到空闲存储器的数据字时,修改固定分配计划的装置 位置在不同的第一缓冲存储器。 还公开了一种重新排列从第二缓冲存储器读取的数据字以排除由输入数据字的再分配引起的可能的冲突的布置。

    Low Density Parity Check Codes For Mimo Systems
    8.
    发明申请
    Low Density Parity Check Codes For Mimo Systems 审中-公开
    Mimo系统的低密度奇偶校验码

    公开(公告)号:US20080256426A1

    公开(公告)日:2008-10-16

    申请号:US11667675

    申请日:2005-11-10

    IPC分类号: H03M13/11

    CPC分类号: H03M13/1102 H03M13/31

    摘要: A low density parity check code is generated by defining first a framework combining symbol detection and low density parity check decoding. Probabilistic information describing multiple-input-multiple-output channels is defined, and a low density parity check code is generated based on said framework and said probabilistic information describing multiple-input-multiple-output channels.

    摘要翻译: 通过首先定义组合符号检测和低密度奇偶校验解码的框架来生成低密度奇偶校验码。 定义描述多输入多输出通道的概率信息,并且基于所述框架生成低密度奇偶校验码,并且描述描述多输入多输出通道的概率信息。

    Method, device, computer program product and apparatus providing a multi-dimensional CPM waveform
    9.
    发明申请
    Method, device, computer program product and apparatus providing a multi-dimensional CPM waveform 审中-公开
    提供多维CPM波形的方法,装置,计算机程序产品和装置

    公开(公告)号:US20080056407A1

    公开(公告)日:2008-03-06

    申请号:US11897368

    申请日:2007-08-30

    IPC分类号: H04L27/20

    CPC分类号: H04L27/2003

    摘要: A method is described for generating a M-D CPM waveform as a constant envelope, continuous phase signal capable of conveying a plurality of information symbols per symbol interval. Additionally, it provides for reducing the phase state space of the M-D CPM waveform, for reducing a number of trellis states required for demodulation of the M-D CPM waveform, and for implementing generalized tilted phase decomposition to reduce the cardinality of the phase state space of the multi-dimensional CPM waveform by a factor of 2. A device, computer program product and apparatus are also described.

    摘要翻译: 描述了一种用于将M-D CPM波形生成为恒定包络的方法,连续相位信号能够每符号间隔传送多个信息符号。 另外,它提供了降低MD CPM波形的相位状态空间,用于减少解调MD CPM波形所需的格数状态,以及用于实现广义倾斜相位分解以减小相位状态空间的基数 多维CPM波形为2倍。还描述了一种设备,计算机程序产品和装置。

    Relay-station assignment/re-assignment and frequency re-use
    10.
    发明申请
    Relay-station assignment/re-assignment and frequency re-use 有权
    中继站分配/重新分配和频率重用

    公开(公告)号:US20080031197A1

    公开(公告)日:2008-02-07

    申请号:US11888800

    申请日:2007-08-02

    IPC分类号: H04Q7/00

    摘要: A prospective relay station sends a report indicative of radio resource sets/preamble sequences used by its neighbors. Where the reported radio resource sets comprise less than all available radio resource sets, a radio resource set that is not indicated in the report is assigned; else where the reported radio resource sets comprise all available radio resource sets, a resource set indicated in the report is assigned. A message is sent to the prospective relay station indicates the assigned radio resource set and an identifier for use as an enabled relay station. The message may include signal strength and IDs. Apparatus, methods and computer programs are detailed for both a base station and the relay node. Radio resource set re-assignment, managed mode relay operations (where the base station schedules traffic among relays using the same radio resource set), and power control of relays and associated mobile stations are also described.

    摘要翻译: 前瞻性中继站发送指示其邻居使用的无线电资源集/前导码序列的报告。 在报告的无线电资源集合包括小于所有可用无线电资源集合的情况下,分配报告中未指示的无线电资源集合; 否则报告的无线电资源集合包括所有可用无线资源集合的情况下,分配报告中指示的资源集。 发送到预期中继站的消息指示分配的无线电资源集合和用作启用中继站的标识符。 该消息可以包括信号强度和ID。 装置,方法和计算机程序对于基站和中继节点都是详细的。 还描述了无线电资源集重新分配,管理模式中继操作(其中基站使用相同的无线电资源集合在中继器之间调度业务)以及中继站和相关联的移动站的功率控制。