公开(公告)号：US20040240597A1

公开(公告)日：2004-12-02

申请号：US10814824

申请日：2004-03-31

Applicant: STMicroelectronics N.V.

Inventor： Chiara Cattaneo ,  Nils Rinaldi ,  Matteo Frigerio ,  Regis Cattenoz

IPC: H04L027/06

CPC classification number: H04B1/7183 ,  H04B2001/6908

Abstract: An incident signal contains a preamble including a training sequence having a series of pulses whose polarity and time shifts are defined by respective polarity code and time-hopping code. A method includes a digital cross-correlation of the received signal with the training sequence. The cross-correlation algebraically sums in accordance with the polarity code windows of the received signal. The starting points of the windows are determined by the time-hopping code. The cross-correlation further includes detecting the end point of the preamble from the result of the digital cross-correlation. When the size of the receiving buffer, i.e., the size of the window is smaller than the number N of samples of each replica of the training sequence, it is particularly advantageous that the digital cross-correlation be performed iteratively in a block-by-block fashion. The computation of each block is split into M slices which are computed by algebraically summing windows N/M samples long.

Abstract translation: 入射信号包含前导码，其包括具有一系列脉冲的训练序列，其极性和时间偏移由相应的极性码和跳时码定义。 一种方法包括接收信号与训练序列的数字互相关。 互相关代数根据接收信号的极性码窗口相加。 窗口的起点由跳时码决定。 互相关还包括从数字互相关的结果检测前同步码的终点。 当接收缓冲器的大小（即，窗口的大小）小于训练序列的每个副本的样本数N时，特别有利的是，数字互相关是逐个逐行执行的， 块时尚。 每个块的计算被分成M个片段，它们通过对N / M个样本长的代数求和来计算。

公开(公告)号：US20030058963A1

公开(公告)日：2003-03-27

申请号：US10255741

申请日：2002-09-26

Applicant: STMicroelectronics N.V.

Inventor： Chiara Cattaneo ,  Didier Helal ,  Thierry Arnaud ,  Fritz Lebowsky ,  Regis Cattenoz

IPC: H03K009/00

CPC classification number: H04B1/7183 ,  H04B1/71637

Abstract: An incident pulse signal of the ultra wideband type conveys digital information that is coded using pulses having a known theoretical shape. A decoding device includes an input for receiving the incident signal, and for delivering a base signal. A comparator receives the base signal and delivers an intermediate signal representative of the sign of the base signal with respect to a reference. A sampling circuit samples the intermediate signal for delivering a digital signal. A digital processing circuit correlates the digital signal with a reference correlation signal corresponding to a theoretical base signal arising from the reception of a theoretical pulse having the known theoretical shape.

Abstract translation: 超宽带类型的入射脉冲信号传送使用具有已知理论形状的脉冲编码的数字信息。 解码装置包括用于接收入射信号和用于传送基本信号的输入。 比较器接收基本信号并传送表示基准信号相对于参考的符号的中间信号。 采样电路对传送数字信号的中间信号进行采样。 数字处理电路将数字信号与对应于从具有已知理论形状的理论脉冲的接收产生的理论基础信号相对应的参考相关信号。