Aggregate interference in white spaces

Abstract

In this paper, we provide a comprehensive analysis\nof aggregated interference by opprtunistic radios accessing the\nwhite spaces of the digital television taking into account the\n¿hidden node¿ problem.We propose a new statistical interference\nmodel for cognitive network in the white space context based\non the amplitude aggregate interference, which accounts for\nthe parameters related to the sensing procedure, spatial reuse\nprotocol employed by secondary users, and environment dependent\nconditions like channel fading and signal obstructions. We\nderive the characteristic function and the nth cumulant of the\ncognitive network interference on the DTV receiver. Moreover,\nthe proposed framework can help to understand secondary\nnetwork interference in the TV white space context for successful\ncoexistence between the licensed system and opportunistic\nnetworks.