NDLI: Distributed spectrum access algorithm for Cognitive Wireless Network with QoS protection of active users

Content Provider	IEEE Xplore Digital Library
Author	Jianmin Zhang Zhaoyang Zhang Aiping Huang
Copyright Year	2009
Description	Author affiliation: Institute of Information and Communication Engineering, Zhejiang University, Hangzhou 310027, China (Jianmin Zhang; Zhaoyang Zhang; Aiping Huang)
Abstract	In this paper, a distributed spectrum access algorithm for Cognitive Wireless Network (CogWN) is proposed. The objective is to maximize the number of admitted Secondary Users (SUs) under the constraint of Interference Temperature (IT) at Measurement Point (MP), while providing AQP (Active users' Quality of service Protection) at the same time. Here AQP means that the Signal to Interference plus Noise Ratios (SINRs) of all active SUs will not fluctuate below their predetermined thresholds during the process of new SUs' spectrum access. In addition, an alarm mechanism is introduced into CogWN, which ensures the IT at MP is always below the predefined threshold, so that the communication of primary system is protected from being affected by SUs. Finally, the proposed algorithm is evaluated through extensive simulations, and the results show that it has a better performance than the traditional algorithm.
Starting Page	1606
Ending Page	1610
File Size	294148
Page Count	5
File Format	PDF
ISBN	9781424451227
e-ISBN	9781424451234
DOI	10.1109/PIMRC.2009.5450146
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-13
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless networks Signal to noise ratio Power system protection Interference constraints Centralized control Communication system control Temperature measurement Laboratories Land mobile radio cellular systems Power control
Content Type	Text
Resource Type	Article

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