By Topic

Dynamic Spectrum Access with QoS Guarantee for Wireless Networks: A Markov Approach

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Yanjun Yao ; Wireless Technol. Innovation Inst., Beijing Univ. of Posts & Telecommun., Beijing, China ; Zhiyong Feng ; Wei Li ; Yi Qian

Dynamic spectrum access has become a promising technique to fully utilize the scarce spectrum resources. However, spectrum allocation schemes with high efficiency and Quality of Service (QoS) guarantee for the primary users have yet to be designed. In this paper, two novel dynamic spectrum access schemes are proposed. The proposed schemes are based on continuous-time Markov chains (CTMC), through which the interactions between primary and secondary users are explicitly modeled. The effects of sensing errors (i.e. miss-detection and false alarm) are taken into consideration. Since miss-detection may lead to collision between primary and secondary users and false alarm will leave spectrum opportunities unused, we derive the optimal access probabilities for each secondary user, so that the QoS of primary user in terms of collision probability constraint is guaranteed, and the missing spectrum opportunities caused by false alarm can be utilized by secondary users. Simulation results show that the proposed schemes can guarantee primary user''s QoS effectively. Moreover, the scheme with buffer can improve the channel occupancy remarkably.

Published in:

Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE

Date of Conference:

6-10 Dec. 2010