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1. (CN105991501) Method and device for receiving preambles

Office : Chine
Numéro de la demande : 201510076155.8 Date de la demande : 12.02.2015
Numéro de publication : 105991501 Date de publication : 05.10.2016
Numéro de délivrance : 105991501 Date de délivrance : 03.05.2019
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
XU HONGLIANG
徐洪亮
GUO XUFENG
郭序峰
ZHANG WENJUN
张文军
GUAN YUNFENG
管云峰
HE DAZHI
何大治
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, which can be applied to when a transmitting end meets a preset transmitting rule. The method is characterized by comprising steps: whether a preamble exists in a baseband signal is judged; the position of the preamble in a physical frame is determined and carried signaling information is analyzed, wherein the step of determination and analysis comprises a substep in which a time domain main body signal for each time domain symbol is subjected to Fourier transform and effective sub carriers are then extracted; each effective sub carrier, a known sub carrier corresponding to each frequency domain known sequence in a known frequency domain signaling set for the time domain symbol and a channel estimation value are subjected to predetermined mathematical operation and then inverse Fourier transform is carried out, and an inverse Fourier result is obtained corresponding to each frequency domain known sequence; and based on an inverse Fourier selection result selected from inverse Fourier results in a first predetermined selection rule for each time domain symbol, the signaling information is analyzed directly and/or by using predetermined processing operation between multiple time domain symbols, the signaling information is analyzed based on the obtained inter-symbol processing result.
(ZH) 本发明提供了一种前导符号的接收方法及装置,适用于发送端满足预定发送规则时,其特征在于:对基带信号判断存在前导符号;确定前导符号在物理帧中位置并解析出携带的信令信息,其中确定和解析步骤包含:将每个时域符号的时域主体信号傅里叶变换后提取出有效子载波;将每个有效子载波与该时域符号的已知频域信令集中每一频域已知序列对应的已知子载波及信道估计值进行预定数学运算后反傅里叶变换,对应于每个频域已知序列得到一个反傅里叶结果;及每个时域符号基于以第一预定选定规则从反傅里叶结果中选出的反傅里叶选定结果,用于直接解出信令信息和/或利用多个时域符号之间进行预定处理操作,基于所得的符号间处理结果解出信令信息。