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:
Feb. 14, 2012
Filed:
Jul. 27, 2005
Jason Hou, Carlsbad, CA (US);
Jing Wang, San Diego, CA (US);
Sean Cai, San Diego, CA (US);
Dazi Feng, San Diego, CA (US);
Yonggang Fang, San Diego, CA (US);
Yunsong Yang, San Diego, CA (US);
Jason Hou, Carlsbad, CA (US);
Jing Wang, San Diego, CA (US);
Sean Cai, San Diego, CA (US);
Dazi Feng, San Diego, CA (US);
Yonggang Fang, San Diego, CA (US);
Yunsong Yang, San Diego, CA (US);
ZTE (USA) Inc., Iselin, NJ (US);
Abstract
Techniques for generating preamble sequences for OFDM and OFDMA communication systems based on CAZAC sequences with desired properties of constant amplitudes (CA) and zero autocorrelation (ZAC). Such preamble sequences may be used for synchronization and identification of individual transmitters. For example, the OFDMA symbol is constructed using a CAZAC sequence in the frequency-domain and the resulting time-domain waveform is a near-CAZAC sequence.