Abstract: The present invention provides a system and method for exploiting location awareness to improve the communication performance in a wireless cognitive radio system. The invention includes determining the absolute position information for the cognitive radio system, receiving digital topographical data related to the absolute position information, classifying the environment of the cognitive radio system based on the absolute position and the topographical data, matching the classified environment with corresponding statistical parameters and improving the communication performance of the cognitive radio system by adapting the cognitive radio system according to the corresponding statistical parameters.

Abstract: A method schedules voice communication in an Orthogonal Frequency Division Multiplexing Access (OFDMA) network of base stations serving sets of mobile stations in cells. The method uses statistical characteristics of voice communications by adjusting scheduling periods accordingly to measurement reports provided by the mobile stations. The base stations generally use persistent scheduling for voice transmission due to inherent characteristics, along with extra signaling concerns. Base stations have the liberty of shortening or prolonging the scheduling period according to their needs while taking into account changes in dynamic conditions. This method makes use of the measurement reports provided by the mobile stations along with a shortened scheduling period in order to reduce ICI.