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. 28, 2010
Filed:
May. 29, 2007
Yunsong Yang, San Diego, CA (US);
Jianmin LU, San Diego, CA (US);
Mingyang Sun, Shenzhen, CN;
FutureWei Technologies, Inc., Plano, TX (US);
Abstract
A system providing flexible cyclic prefix length in a preamble (i.e., superframe preamble) is disclosed. The preamble comprises a first section and a second section. The first section contains at least one broadcast channel and occupies the first number of OFDM symbols in the preamble. The second section contains acquisition pilots and occupies the remaining number of OFDM symbols in the preamble. A first cyclic prefix length is used in the first section. It is indicated by the first broadcast channel and is unknown to a mobile station before the mobile station decodes the first broadcast channel. The second cyclic prefix length is used in the second section. It is fixed and known to the mobile stations. The first broadcast channel is located at the last OFDM symbol in the first section and is next to the second section in time.