公开(公告)号：US20020012410A1

公开(公告)日：2002-01-31

申请号：US09855734

申请日：2001-05-15

Applicant: STMicroelectronics N.V.

Inventor： David Chappaz

IPC: H03D001/04 ,  H03K005/01 ,  H03D001/06 ,  H03K006/04 ,  H04B001/10 ,  H04L001/00 ,  H04L025/08

CPC classification number: H04L25/0202

Abstract: A first estimate is made of the impulse response of the channel considered as a whole, then this first estimate is corrected independently of the information transmitted for obtaining a corrected final estimate of the impulse response of the channel. This is done by taking account of the fact that the impulse response of the sender and the impulse response of the receiver are known.

Abstract translation: 首先估计作为整体考虑的信道的脉冲响应，然后该第一估计被独立于为了获得校正的信道的脉冲响应的最终估计而被发送的信息被校正。 这是通过考虑到发送器的脉冲响应和接收器的脉冲响应是已知的事实来完成的。

公开(公告)号：US20020126775A1

公开(公告)日：2002-09-12

申请号：US10006995

申请日：2001-12-03

Applicant: STMicroelectronics N.V.

Inventor： David Chappaz

IPC: H04L027/06

CPC classification number: H04L25/03197 ,  H04L25/03191

Abstract: The successive values of the digital symbols which can each take M different possible values are estimated on the basis of the successive values of digital samples each of which results from the combination of at most L successive symbols. This estimation includes a stage by stage progression through a trellis of the Viterbi type with Mk states, with k being less than or equal to Lnull1. All the states of all the stages are respectively provided with aggregate metrics. When taking into account the sample of rank n, all the transitions arriving at the various states of the current stage of the trellis are partitioned into M groups, each group containing all the transitions arising from the states of the preceding stage which are associated with one of the M possible values of the symbol of rank nnullk. The various aggregate metrics are calculated for these various states of the current stage of the trellis. One of the transitions which leads to the state provided with a extremum aggregate metric is determined in each group. A unique decision is taken regarding the value of the symbol of rank nnullk by detecting the group associated with the extremum of these M extremum aggregate metrics. This unique decision is provided with a symbol-confidence index formulated from these M extremum aggregate metrics.

Abstract translation: 可以基于每个由至多L个连续符号的组合产生的数字样本的连续值来估计每个可以取得M个不同可能值的数字符号的连续值。 该估计包括通过具有Mk状态的维特比类型的网格逐级进行，k小于或等于L-1。 所有阶段的所有状态分别被提供聚合指标。 当考虑秩n的样本时，到达网格当前阶段的各种状态的所有转变被划分为M组，每个组包含由前一级的状态产生的与一个状态相关联的所有转换 的n个符号的M个可能值。 对于网格的当前阶段的这些各种状态计算各种聚合度量。 在每组中确定导致提供极值聚合度量的状态的一个转换。 通过检测与这些M极值聚合度量的极值相关联的组，对秩n-k的符号的值进行独特的决定。 这个独特的决策提供了从这些M极值聚合指标制定的符号信心指数。

公开(公告)号：US20030054771A1

公开(公告)日：2003-03-20

申请号：US10233055

申请日：2002-08-30

Applicant: STMicroelectronics N.V.

Inventor： David Chappaz

IPC: H04B017/00

CPC classification number: H04L25/0212 ,  G01S11/026

Abstract: Estimating the speed of movement of a mobile terminal includes estimating the impulse response of the transmission channel at a given instant, and estimating the time derivative of the estimated impulse response. Estimating the speed also includes determining of a ratio of the energy of the estimated impulse response to the energy of the estimated time derivative.

Abstract translation: 估计移动终端的移动速度包括估计在给定时刻的传输信道的脉冲响应，以及估计估计的脉冲响应的时间导数。 估计速度还包括确定估计的脉冲响应的能量与估计的时间导数的能量的比率。