Document Type
Patent
Publication Date
May 2012
Patent Number
8184728
Abstract
In accordance with the present invention, a system and method for orthogonal frequency division multiplexing (OFDM) sidelobe suppression is provided. In a particular embodiment an extension is added to OFDM symbols that is calculated using optimization methods to minimize adjacent channel interference (ACI) while keeping the extension power at an acceptable level. Using this technique, interference to adjacent signals is reduced significantly at the cost of a small decrease in the useful symbol energy. The proposed method can be used by cognitive radio (CR) systems to shape the spectrum of OFDM signals and to minimize interference to licensed users (LU), or to reduce the size of guard bands used in conventional OFDM systems.
Application Number
12/422,651
Recommended Citation
Mahmoud, Hisham A. and Arslan, Huseyin, "Adaptive symbol transition method for OFDM-based cognitive radio systems and method of use" (2012). USF Patents. 325.
https://digitalcommons.usf.edu/usf_patents/325
Assignees
University of South Florida
Filing Date
04/13/2009
Primary/U.S. Class
375/260
