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. 03, 2004
Filed:
Feb. 24, 2000
Applicant:
Inventors:
Santosh Anikhindi, San Jose, CA (US);
Vincent K. Jones, IV, Redwood City, CA (US);
Assignee:
Cisco Technology, INC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 2/728 ;
U.S. Cl.
CPC ...
H04L 2/728 ;
Abstract
Systems and methods for appending cyclic prefixes to OFDM bursts while employing minimal additional memory and adding minimal latency are provided. This facilitates lower cost implementations of OFDM communication systems including systems that carry real time traffic such as telephony and video conferencing. The phases of frequency domain symbols are rotated prior to application of the IFFT so that cyclic prefix addition may be implemented as cyclic postfix addition. Cyclic postfix addition requires much less memory and imposes much less latency then cyclic prefix addition.