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1. (US20170195155) PREAMBLE SYMBOL GENERATION AND RECEIVING METHOD, AND FREQUENCY-DOMAIN SYMBOL GENERATION METHOD AND DEVICE

Office : États-Unis d'Amérique
Numéro de la demande : 15304854 Date de la demande : 16.04.2015
Numéro de publication : 20170195155 Date de publication : 06.07.2017
Type de publication : A1
Référence PCT: Numéro de la demande :PCTCN2015076813 ; Numéro de publication : Cliquer pour voir les données
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
CPC :
H04L 27/2607
H04L 27/2678
H04L 27/2666
Déposants : Shanghai National Engineering Research Center of Digital Television Co., Ltd.

Inventeurs : Wenjun ZHANG
Ge HUANG
Guanbin XING
Hongliang XU
Xufeng GUO
Yunfeng GUAN
Dazhi HE
Données relatives à la priorité : 201410153040.X 16.04.2014 CN
201410168180.4 24.04.2014 CN
201410175323.4 28.04.2014 CN
201410177035.2 29.04.2014 CN
201410182962.3 30.04.2014 CN
201410184919.0 04.05.2014 CN
201410185112.9 05.05.2014 CN
201410229558.7 28.05.2014 CN
201410259080.2 12.06.2014 CN
201410274626.1 19.06.2014 CN
201410326504.2 10.07.2014 CN
201410753506.X 10.12.2014 CN
201510039510.4 26.01.2015 CN
201510052202.5 30.01.2015 CN
201510061935.5 30.01.2015 CN
201510064118.5 06.02.2015 CN
201510076151.X 12.02.2015 CN
201510076155.8 12.02.2015 CN
201510076216.0 12.02.2015 CN
Titre : (EN) PREAMBLE SYMBOL GENERATION AND RECEIVING METHOD, AND FREQUENCY-DOMAIN SYMBOL GENERATION METHOD AND DEVICE
Abrégé : front page image
(EN)

Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order. Using the entirety or a portion of a certain length of a time-domain main body signal as a prefix, it is possible to perform coherent detection, which solves the issues of performance degradation with non-coherent detection and differential decoding failure under complex frequency selective fading channels, and generating a postfix or hyper prefix based on the truncation of the entirety or a portion of the time-domain main body signal would enable the generated preamble symbol to have sound fractional frequency offset estimation performance and timing synchronization performance.


Également publié sous:
CA2945856KR1020160146853KR1020190049917WO/2015/158294