The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2007
Filed:
May. 26, 2006
Pan-soo Kim, Daejon, KR;
In-ki Lee, Busan, KR;
Tae-hoon Kim, Seoul, KR;
Dae-ig Chang, Daejon, KR;
Deock-gil OH, Daejon, KR;
Wonjin Sung, Seoul, KR;
Deokchang Kang, Seoul, KR;
Seokheon Kang, Seoul, KR;
Pan-Soo Kim, Daejon, KR;
In-Ki Lee, Busan, KR;
Tae-Hoon Kim, Seoul, KR;
Dae-Ig Chang, Daejon, KR;
Deock-Gil Oh, Daejon, KR;
Wonjin Sung, Seoul, KR;
Deokchang Kang, Seoul, KR;
Seokheon Kang, Seoul, KR;
Abstract
Provided is a frame synchronization method for synchronizing frames with pilot blocks added thereto based on differential correlation information in a satellite communication system. The method can acquire a highly reliable frame synchronization estimation value by achieving a multi-step threshold value test using pilot blocks after a correlation analysis and a threshold test based on a sync signal in order to resolve the problem of a low signal-to-noise ratio and a large frequency error and acquire highly reliable frame synchronization performance, and can overcome distortion of a correlation analysis value caused by the frequency error by analyzing correlation based on differential information. The method includes the steps of: a) performing correlation analysis and a threshold test by using a sync word; and b) performing a multi-step correlation value test by using the pilot blocks added to the frames prior to the sync word.