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1. (CN105991502) Method and device for receiving preambles

Office : Chine
Numéro de la demande : 201510076216.0 Date de la demande : 12.02.2015
Numéro de publication : 105991502 Date de publication : 05.10.2016
Numéro de délivrance : 105991502 Date de délivrance : 27.09.2019
Type de publication : B
CIB :
H04L 27/26
H ÉLECTRICITÉ
04
TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
L
TRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
27
Systèmes à porteuse modulée
26
Systèmes utilisant des codes à fréquences multiples
Déposants : SHANGHAI NATIONAL ENGINEERING RESEARCH CENTER OF DIGITAL TELEVISION CO., LTD.
上海数字电视国家工程研究中心有限公司
Inventeurs : HUANG GE
黄戈
XING GUANBIN
邢观斌
ZHANG WENJUN
张文军
XU HONGLIANG
徐洪亮
GUO XUFENG
郭序峰
Données relatives à la priorité :
Titre : (EN) Method and device for receiving preambles
(ZH) 前导符号的接收方法及装置
Abrégé : front page image
(EN) The invention provides a method and a device for receiving a preamble, in view of at least one time domain symbol with a predetermined three-section time domain structure. The method and the device are characterized in that a preliminary timing synchronization mode comprises: by using a unique processing relationship and/or modulation relationship between the predetermined three-section time domain structures, delayed slip autocorrelation is carried out to acquire one group or multiple groups of cumulative correlation values; based on the one group or multiple groups of cumulative correlation values, after delay relationship matching and/or unique predetermined mathematical operation are/is carried out, an operation value is used for preliminary timing synchronization. As the method and the device are in view of at least one time domain symbol with a predetermined three-section structure, timing synchronization is carried out by using the delay relationship matching and/or the predetermined mathematical operation based on the three-section relationship between multiple time domain signals, the performance can be enhanced maximally, the timing synchronization algorithm is universal, and the complexity is low.
(ZH) 本发明提供了一种前导符号的接收方法及装置,针对至少一个具有预定三段时域结构的时域符号,其特征在于初步定时同步方式包含:利用预定三段时域结构之间特有的处理关系和/或调制关系,进行延迟滑动自相关来获取一组或多组累加相关值;基于一组或多组累加相关值进行延迟关系匹配和/或特定的预定数学运算后,将运算值用于初始定时同步,由于所针对至少一个具有三段结构的时域符号,基于多个时域符号之间的三段关系利用延迟关系匹配和/或预定数学运算来进行定时同步,能最大限度提升性能并且这样的定时同步算法较通用,复杂度低。