Minimum mean-squared error block-decision feedback sequence estimation in digital communication systems
    1.
    发明授权
    Minimum mean-squared error block-decision feedback sequence estimation in digital communication systems 有权
    数字通信系统中的最小均方误差块判决反馈序列估计

    公开(公告)号:US06757339B1

    公开(公告)日:2004-06-29

    申请号:US09624207

    申请日:2000-07-24

    IPC分类号: H04B330

    摘要: A method of estimating the sequence of transmitted symbols in a digital communication system is provided. By assuming that the transmitted symbols have a zero mean and a covariance matrix given by an identity matrix, as is the case in an EDGE communication system, the solution to the minimization of the expectation value of ∥{circumflex over (s)}−s∥2 always allows a lower triangular matrix to be found through Cholesky decomposition. The lower triangular matrix allows an efficient block decision-feedback sequence estimation to be carried out. The method is no more complex than the zero-forcing block decision-feedback sequence estimation technique, yet a solution always exists and performance is improved over the zero-forcing method.

    摘要翻译: 提供了一种在数字通信系统中估计发送符号序列的方法。 通过假设所发送的符号具有由单位矩阵给出的零均值和协方差矩阵,如在EDGE通信系统中的情况一样,使得对于∥{circumflex over(s)}的期望值最小化的解决方案 ∥<2>总是允许通过Cholesky分解找到一个下三角矩阵。 下三角矩阵允许执行有效的块判决反馈序列估计。 该方法不比零强制块决策反馈序列估计技术复杂得多,但仍然存在一种解决方案,并且通过零强制方法提高性能。

    Method of estimating the symbols of a digital signal and receiver for implementing said method
    2.
    发明授权
    Method of estimating the symbols of a digital signal and receiver for implementing said method 有权
    用于实现所述方法的估计数字信号和接收器的符号的方法

    公开(公告)号:US08428167B2

    公开(公告)日:2013-04-23

    申请号:US13584401

    申请日:2012-08-13

    IPC分类号: H04K1/10

    摘要: The invention relates to a method of estimating symbols carried by a digital signal that is received by a receiver over a communication channel (5), said symbols being multiplexed or orthogonal frequency sub-carriers. The inventive method comprises the following steps in relation to each symbol carried by the digital signal, consisting in: performing at least two transforms towards the frequency domain (8,9) on a portion of the received signal essentially corresponding to the symbol, said transforms being performed with a determined time lag (10) therebetween: estimating the parameters (r0, r1, . . . , rn, r′0, r′1, . . . , r′n) of the communication channel from pre-determined binary information contained in the digital signal; and estimating the symbol from a combination of the result of each of the transforms performed and the estimated communication channel parameters.

    摘要翻译: 本发明涉及一种估计通过通信信道(5)接收的数字信号承载的符号的方法,所述符号被复用或正交的频率子载波。 本发明的方法包括关于由数字信号承载的每个符号的以下步骤,其包括:在基本上对应于符号的接收信号的一部分上对频域(8,9)执行至少两个变换,所述变换 以其中的确定的时间延迟(10)执行:从预先确定的通信信道估计通信信道的参数(r0,r1,...,rn,r'0,r'1,...,r'n) 包含在数字信号中的二进制信息; 以及从所执行的每个变换的结果和估计的通信信道参数的组合来估计符号。

    Method and apparatus for controlling the sending of data blocks
    4.
    发明授权
    Method and apparatus for controlling the sending of data blocks 有权
    用于控制数据块发送的方法和装置

    公开(公告)号:US07197023B2

    公开(公告)日:2007-03-27

    申请号:US10158309

    申请日:2002-05-30

    IPC分类号: H04B7/212

    摘要: The blocks to be sent on one or more physical channels for packet mode transmission pertain to several temporary block flows to terminals. The terminals are distributed into several subscription classes corresponding to various priority levels and each associated with a throughput restriction parameter. Transmission throug hputs allocated to the flows as a function of transmission throughputs respectively requested during the creation of the flows and restriction parameters associated with the subscription classes are determined. At least one traffic channel supported by a physical channel is allotted to each new flow created. For each send period on a physical channel, a flow to which a traffic channel supported by this physical channel is allotted, is selected with the aid of the values of the transmission throughputs allocated, so as to send a block of the selected flow in the course of said period.

    摘要翻译: 在用于分组模式传输的一个或多个物理信道上发送的块与到终端的几个临时块流相关。 终端被分配到对应于各种优先级的几个订阅类别,并且每个与吞吐量限制参数相关联。 确定分配给流的传输输出作为在创建与订阅类相关联的流量和限制参数期间分别请求的传输吞吐量的函数。 由物理通道支持的至少一个业务信道被分配给每个创建的新流。 对于物理信道上的每个发送周期,通过分配的传输吞吐量的值来选择分配由该物理信道支持的业务信道的流,以便将所选择的流的块发送到 所述期间的课程。

    Method of estimating the symbols of a digital signal and receiver for implementing said method
    5.
    发明授权
    Method of estimating the symbols of a digital signal and receiver for implementing said method 有权
    用于实现所述方法的估计数字信号和接收器的符号的方法

    公开(公告)号:US08295376B2

    公开(公告)日:2012-10-23

    申请号:US13160764

    申请日:2011-06-15

    IPC分类号: H04K1/10

    摘要: The invention relates to a method of estimating symbols carried by a digital signal that is received by a receiver over a communication channel (5), said symbols being multiplexed or orthogonal frequency sub-carriers. The inventive method comprises the following steps in relation to each symbol carried by the digital signal, consisting in: performing at least two transforms towards the frequency domain (8,9) on a portion of the received signal essentially corresponding to the symbol, said transforms being performed with a determined time lag (10) therebetween: estimating the parameters (r0, r1, . . . , rn, r′0, r′1, . . . , r′n) of the communication channel from pre-determined binary information contained in the digital signal; and estimating the symbol from a combination of the result of each of the transforms performed and the estimated communication channel parameters.

    摘要翻译: 本发明涉及一种估计通过通信信道(5)接收的数字信号承载的符号的方法,所述符号被复用或正交的频率子载波。 本发明的方法包括关于由数字信号承载的每个符号的以下步骤,其包括:在基本上对应于符号的接收信号的一部分上对频域(8,9)执行至少两个变换,所述变换 以其中的确定的时间延迟(10)执行:从预先确定的通信信道估计通信信道的参数(r0,r1,...,rn,r'0,r'1,...,r'n) 包含在数字信号中的二进制信息; 以及从所执行的每个变换的结果和估计的通信信道参数的组合来估计符号。

    Method of Estimating the Symbols of a Digital Signal and Receiver for Implementing Said Method
    6.
    发明申请
    Method of Estimating the Symbols of a Digital Signal and Receiver for Implementing Said Method 有权
    用于实现所述方法的数字信号和接收器的符号的估计方法

    公开(公告)号:US20110243282A1

    公开(公告)日:2011-10-06

    申请号:US13160764

    申请日:2011-06-15

    IPC分类号: H04L27/38 H04L27/06

    摘要: The invention relates to a method of estimating symbols carried by a digital signal that is received by a receiver over a communication channel (5), said symbols being multiplexed or orthogonal frequency sub-carriers. The inventive method comprises the following steps in relation to each symbol carried by the digital signal, consisting in: performing at least two transforms towards the frequency domain (8,9) on a portion of the received signal essentially corresponding to the symbol, said transforms being performed with a determined time lag (10) therebetween: estimating the parameters (r0, r1, . . . , rn, r′0, r′1, . . . , r′n) of the communication channel from pre-determined binary information contained in the digital signal; and estimating the symbol from a combination of the result of each of the transforms performed and the estimated communication channel parameters.

    摘要翻译: 本发明涉及一种估计通过通信信道(5)接收的数字信号承载的符号的方法,所述符号被复用或正交的频率子载波。 本发明的方法包括关于由数字信号承载的每个符号的以下步骤,其包括:在基本上对应于符号的接收信号的一部分上对频域(8,9)执行至少两个变换,所述变换 以其中的确定的时间延迟(10)执行:从预先确定的通信信道估计通信信道的参数(r0,r1,...,rn,r'0,r'1,...,r'n) 包含在数字信号中的二进制信息; 以及从所执行的每个变换的结果和估计的通信信道参数的组合来估计符号。

    Method of accessing resources of a radiocommunication system, mobile terminal and base station for the implementation of the method
    7.
    发明授权
    Method of accessing resources of a radiocommunication system, mobile terminal and base station for the implementation of the method 有权
    访问无线电通信系统资源的方法,移动终端和基站的实现方法

    公开(公告)号:US07454204B2

    公开(公告)日:2008-11-18

    申请号:US10889482

    申请日:2004-07-12

    IPC分类号: H04Q7/20

    摘要: The mobile terminal according to the invention comprises: means for receiving synchronization signals from a base station of a radiocommunication system; means for sending towards the base station requests for access to communication resources, at respective instants clamped with respect to instants of reception of said synchronization signals; means for determining a level of remoteness with respect to the base station; and means for advancing the instants of sending of the requests for access to communication resources, as a function of the level of remoteness determined by the means for determining a level of remoteness with respect to the base station.

    摘要翻译: 根据本发明的移动终端包括:用于从无线电通信系统的基站接收同步信号的装置; 用于在针对所述同步信号的接收时刻被钳位的相应时刻向基站发送对通信资源的访问请求的装置; 用于确定相对于基站的偏远水平的装置; 以及用于根据通过用于确定相对于基站的偏远水平的方法确定的远程水平来推进发送访问通信资源的请求的时刻的手段。

    Method of processing a signal by a radio receiver and radio receiver for the implementation of the method
    8.
    发明授权
    Method of processing a signal by a radio receiver and radio receiver for the implementation of the method 有权
    通过无线电接收机和无线电接收机处理信号的方法用于实现该方法

    公开(公告)号:US07372894B2

    公开(公告)日:2008-05-13

    申请号:US10774711

    申请日:2004-02-09

    IPC分类号: H04B1/00

    摘要: In a spread spectrum digital radiocommunication receiver, a first estimate of a symbol transmitted by a sender is calculated by applying to a radio signal received a processing taking into account a number N of propagation paths from the sender, a parameter of reliability of the first estimate is evaluated, and when the reliability parameter evaluated does not satisfy a confidence criterion, a second estimate of the symbol is calculated by taking into account at least one (N+1)-th propagation path from the sender in the processing applied to the radio signal received.

    摘要翻译: 在扩展频谱数字无线电通信接收机中,通过应用接收的无线电信号来计算发送方发送的符号的第一估计,该处理考虑到来自发送者的传播路径数量N,第一估计的可靠性参数 并且当所评估的可靠性参数不满足置信标准时,通过考虑在应用于无线电的处理中的来自发送者的至少一个第(N + 1)个传播路径来计算符号的第二估计 收到信号。

    Method of controlling the relative power of radio signals transmitted in macrodiversity mode and a radio network controller for implementing the method
    9.
    发明授权
    Method of controlling the relative power of radio signals transmitted in macrodiversity mode and a radio network controller for implementing the method 失效
    控制在宏分集模式下发送的无线电信号的相对功率的方法和用于实现该方法的无线电网络控制器

    公开(公告)号:US07359729B2

    公开(公告)日:2008-04-15

    申请号:US10859663

    申请日:2004-06-03

    IPC分类号: H04B7/00 H04Q7/20

    CPC分类号: H04W52/40

    摘要: The radio network controller estimates respective attenuation ratios of radio signals received by a terminal from transmitters of an active set. It commands at least some of the transmitters of the active set to transmit to the terminal with respective powers such that the difference pi-pj between the respective transmission powers pi and pj of two transmitters i and j is substantially proportional to 1 L j - 1 L i , where Li and Lj designate the attenuation ratios estimated for the transmitters i and j, respectively.

    摘要翻译: 无线电网络控制器估计终端从活动组的发射机接收的无线电信号的各个衰减比。 它命令有源集合的至少一些发射机以相应的功率向终端发射,使得各个发射功率p'之间的差值p < 两个发射机i和j的SUB&lt; i&lt; i&gt;和p&lt; j&gt; j基本上与 1 其中L i i和L j分别表示为发射机i和j估计的衰减比。

      Digital equalization method, and a radio communication receiver implementing such method
      10.
      发明授权
      Digital equalization method, and a radio communication receiver implementing such method 有权
      数字均衡方法和实现这种方法的无线电通信接收机

      公开(公告)号:US06754264B1

      公开(公告)日:2004-06-22

      申请号:US09646231

      申请日:2000-09-12

      IPC分类号: H03H730

      CPC分类号: H04L25/03292 H04B1/707

      摘要: Discrete symbols of transmitted signals, forming part of the components of a vector D of size N, are estimated from a vector Y of L digital samples of a received signal. The vector Y may be broken down into Y=AD+YN, where A is a matrix of size L×N previously determined from measurements of at least one transmission channel reply and YN represents a vector of L noise samples. The method includes determining an upper triangular matrix T of size N×N and a vector Z of size N such that the quadratic criteria ∥TX−Z∥2 and ∥AX−Y∥2 are minimal for the same vector X of size N, and dividing the vector Z and the matrix T into blocks so as to operate a minimisation of the quadratic criterion block by block along the diagonal of matrix T.

      摘要翻译: 从接收信号的L个数字样本的矢量Y估计出形成大小为N的矢量D的分量的一部分的发射信号的离散符号。 矢量Y可以分解为Y = AD + YN,其中A是从至少一个传输信道应答的测量预先确定的大小为L×N的矩阵,并且Y N表示L个噪声样本的向量。 该方法包括确定尺寸为N×N的上三角矩阵T和大小为N的向量Z,使得对于相同的尺寸矢量X,二次标准‖TX-Z‖2和‖AX-Y‖2<2>是最小的 N,并且将向量Z和矩阵T划分成块,以便沿着矩阵T的对角线逐块操作二次标准的最小化。