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.
Mahmoud, Hisham A. and Arslan, Huseyin, "Adaptive symbol transition method for OFDM-based cognitive radio systems and method of use" (2012). USF Patents. 325.
University of South Florida