Other Articles by Author(s)

Yongju Xian
Long Xu
Ruijie Li

Author(s) and WSEAS

Yongju Xian
Long Xu
Ruijie Li

WSEAS Transactions on Communications

Print ISSN: 1109-2742
E-ISSN: 2224-2864

Volume 16, 2017

Notice: As of 2014 and for the forthcoming years, the publication frequency/periodicity of WSEAS Journals is adapted to the 'continuously updated' model. What this means is that instead of being separated into issues, new papers will be added on a continuous basis, allowing a more regular flow and shorter publication times. The papers will appear in reverse order, therefore the most recent one will be on top.

A Scheme of Multi-Type Spectrum Aggregation under Constrained Collision Probability

AUTHORS: Yongju Xian, Long Xu, Ruijie Li

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ABSTRACT: In cognitive radio networks, secondary users may temporarily occupy dynamic sub-channels originally authorized to primary users. With the increase of the number of aggregated dynamic channels for secondary users, there is an increase of collision probability leading to degradation of the overall system. In this paper, the effects of the number of aggregated dynamic sub-channels on the collision probability are studied, and the system capacity is analyzed. Based on this, an aggregation scheme is designed. By the scheme and under collision probability constraint, the optimal number of aggregated dynamic sub-channels is obtained. Simulation results show that the optimal number of aggregated channels and the maximum capacity are gained while the collision probability is bounded below the collision tolerable level.

KEYWORDS: multi-type spectrum, collision constraint, collision probability, dynamic sub-channel, spectrum aggregat


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WSEAS Transactions on Communications, ISSN / E-ISSN: 1109-2742 / 2224-2864, Volume 16, 2017, Art. #37, pp. 336-341

Copyright © 2017 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution License 4.0

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