Open AccessCooperative spectrum sensing with two‐stage reporting for cognitive radio networks
Author(s) -
So Jaewoo
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.1793
Subject(s) - cognitive radio , scheme (mathematics) , computer science , stage (stratigraphy) , overhead (engineering) , process (computing) , throughput , spectrum (functional analysis) , computer network , data mining , telecommunications , mathematics , wireless , mathematical analysis , paleontology , physics , quantum mechanics , biology , operating system
A new cooperative spectrum sensing (CSS) scheme with two‐stage reporting is proposed so as to improve the throughput of secondary users (SUs) through reducing the reporting overhead. In the proposed scheme, the reporting process of the SUs is divided into two stages (a dedicated reporting stage and a contention‐based reporting stage) and the fusion centre determines the presence of primary users through combining the sensing results successfully received in the two reporting stages by using the k ‐out‐of‐ N rule. Simulation results demonstrate that the proposed scheme significantly outperforms conventional CSS schemes based on the OR rule and the k ‐out‐of‐ N rule.