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Title:
LOW-VOLTAGE POWER LINE BROADBAND CARRIER COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/015349
Kind Code:
A1
Abstract:
Disclosed is a low-voltage power line broadband carrier communication method. The method involves: when a physical layer protocol frame is sent, first sending a short preamble for automatic gain control, channel estimation, coarse frequency offset compensation and symbol synchronization, and then sending a long preamble for automatic gain control, channel estimation, fine frequency offset compensation and symbol synchronization. Compared with simply sending a long preamble, the present invention can quickly and accurately complete, by means of combining a short preamble and a long preamble, frequency offset compensation, automatic gain control, symbol synchronization and channel estimation without reducing the precision, thereby achieving the effect of fast convergence, reducing the resource overhead and time overhead, and improving the system performance.

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Inventors:
SUN SONGSONG (CN)
WEI REN (CN)
GU QIANG (CN)
LI HONGBING (CN)
CHEN BAIRU (CN)
ZENG ANHUI (CN)
Application Number:
PCT/CN2018/079428
Publication Date:
January 24, 2019
Filing Date:
March 19, 2018
Export Citation:
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Assignee:
WU QI TECH INC (CN)
International Classes:
H04L5/00; H04L27/26; H04L25/02; H04L27/00
Domestic Patent References:
WO2016160528A12016-10-06
Foreign References:
CN107241289A2017-10-10
US7519128B22009-04-14
CN103988454A2014-08-13
CN102361465A2012-02-22
US20160248555A12016-08-25
CN105553489A2016-05-04
CN102835061A2012-12-19
Other References:
"IEEE Std 802.11a-1999 (R2003)", WIRELESS LAN MEDIUM ACCESS CONTROL (MAC) AND PHYSICAL LAYER (PHY) SPECIFICATIONS: HIGH-SPEED PHYSICAL LAYER IN THE 5 GHZ BAND, 12 June 2003 (2003-06-12), pages 1 - 91, XP055567909
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY LAW FIRM (CN)
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