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:
Nov. 05, 2013
Filed:
Jun. 02, 2005
Avneesh Agrawal, San Diego, CA (US);
Durga Prasad Malladi, San Diego, CA (US);
Anastasios Stamoulis, San Diego, CA (US);
Ashok Mantravadi, San Diego, CA (US);
Ramaswamy Murali, San Diego, CA (US);
Avneesh Agrawal, San Diego, CA (US);
Durga Prasad Malladi, San Diego, CA (US);
Anastasios Stamoulis, San Diego, CA (US);
Ashok Mantravadi, San Diego, CA (US);
Ramaswamy Murali, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
To transmit data in a manner to mitigate the deleterious effects of delay spread, the expected coverage areas for multiple transmissions to be sent in multiple time slots are initially determined. Cyclic prefix lengths for these transmissions are selected based on the expected coverage areas. The cyclic prefix length for each transmission may be selected from among a set of allowed cyclic prefix lengths based on the expected coverage area for that transmission, the pilot staggering used for the transmission, and so on. For example, a shorter cyclic prefix length may be selected for each local transmission, and a longer cyclic prefix length may be selected for each wide-area transmission. The selected cyclic prefix lengths may be signaled to the terminals. The transmissions are processed (e.g., OFDM modulated) based on the selected cyclic prefix lengths. The cyclic prefix lengths may be selected periodically, e.g., in each super-frame.