Title :
Efficiency of dynamic frequency selection based coexistence mechanisms for tv white space enabled cognitive wireless access points
Author :
Villardi, Gabriel P. ; Sum, Chin-sean ; Sun, Chen ; Alemseged, Yohannes ; Lan, Zhou ; Harada, Hiroshi
fDate :
12/1/2012 12:00:00 AM
Abstract :
We investigate the efficiency of dynamic frequency selection (DFS) in mitigating interference among neighboring low-power cognitive wireless portable networks operating in the TV white space. We derive an interference model to predict the range and level of interference generated in the TV bands by portable low-height antenna cognitive wireless access points in suburban and urban areas. Based on the aforementioned model, we provide an analysis of the spectral availability for either the scenarios where DFS coexistence is employed or not. The steps of our analysis are introduced in a tutorial fashion, and a coexistence case study of TVWS enabled low-power cognitive wireless portable APs in Japan is presented. Our analysis demonstrates the intrinsic relationship SA holds with the TVWS channel set as well as statistical information (e.g., household density of wards and cities, Internet penetration, and white space radio AP market penetration).
Keywords :
antennas; cognitive radio; interference suppression; DFS efficiency; Internet penetration; Japan; TV bands; TV white space; TVWS channel set; cognitive wireless access points; dynamic frequency selection-based coexistence mechanisms; household density; interference mitigation; interference model; low-power cognitive wireless portable networks; portable low-height antenna cognitive wireless access points; spectral availability; statistical information; suburban area; urban area; white space radio AP market penetration; Interference; Predictive models; Standards; TV; White spaces; Wireless communication;
Journal_Title :
Wireless Communications, IEEE
DOI :
10.1109/MWC.2012.6393520