Title :
Multi-band spectrum selection framework based on partial observations
Author :
Perez-Romero, Jordi ; Raschella, A. ; Sallent, O. ; Umbert, A.
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politec. de Catalunya (UPC), Barcelona, Spain
Abstract :
The demand for higher data rates, capacity and better Quality of Service (QoS) is constantly growing; therefore, there is a pressing need for efficient use of wireless network resources. In this context, the application of Cognitive Radio (CR) principle has emerged as a solution to the problem of spectrum scarcity. In this respect, this paper presents an algorithm that enables multi-band spectrum selection for wireless applications under interference variations in the available spectrum blocks. The algorithm is formulated as a Partially Observable Markov Decision Process (POMDP) targeting the maximization of a reward function that captures how suitable each allocated spectrum block is for the data transmission in each radio link depending on the application bit rate requirements.
Keywords :
Markov processes; cognitive radio; quality of experience; radio links; radio networks; radiofrequency interference; CR principle; POMDP; QoS; bit rate requirements; cognitive radio principle; data transmission; high data rate; interference variations; multiband spectrum selection framework; partial observations; partially observable Markov decision process; quality of service; radio link; spectrum blocks; spectrum scarcity; wireless network resources; Bit rate; Cognitive radio; Decision making; Interference; Markov processes; Radio link; Vectors; Partially Observable Markov Decision Process (POMDP); spectrum selection;
Conference_Titel :
World of Wireless, Mobile and Multimedia Networks (WoWMoM), 2013 IEEE 14th International Symposium and Workshops on a
Conference_Location :
Madrid
Print_ISBN :
978-1-4673-5827-9
DOI :
10.1109/WoWMoM.2013.6583418