Paper Info
Title
DYWAMIT: Asynchronous Wideband Dynamic Spectrum Sensing and Access System.
Abstract
Dynamic spectrum access (DSA) is a promising solution for enhancing the utilization efficiency of spectrum resources. In DSA, spectrum sensing is crucial and cooperative spectrum sensing has been confirmed as a promising technology that can combat the wireless channel fading problem. Most current works have assumed that the secondary users (SUs) are synchronous with the primary users' (PUs) network. However, on one hand, the SUs may have no information about the PUs' communication protocols. On the other hand, communications among the PUs are not based on synchronous operation in some systems. In order to address such problems, the DYWAMIT, an asynchronous wideband DSA system, is proposed. In this scheme, the SUs need not maintain synchronism with the PUs, enabling the SUs to cognitively and asynchronously access primary channels even without knowing the communication protocols of the PUs. Performance analysis and simulations are conducted to evaluate the proposed DYWAMIT algorithm; in particular, the average throughput of the SUs, accounting for the asynchronism between the SUs and PUs, is derived for four cases of interest. Some important future research challenges are highlighted.
Year
DOI
Venue
2017
10.1109/JSYST.2014.2368692
IEEE Systems Journal
Keywords
Field
DocType
Asynchronous,cognitive radio (CR),contention,cooperative spectrum sensing,decentralized,dynamic spectrum access (DSA)
Asynchronous communication,Wideband,Algorithm design,Wireless,Computer science,Fading,Computer network,Communication channel,Throughput,Communications protocol
Journal
Volume
Issue
ISSN
11
3
1932-8184
Citations 
PageRank 
References 
0
0.34
0
Authors
6
Name
Order
Citations
PageRank
Chunxiao Jiang12064161.92
Chunxing Jiang200.34
Norman C. Beaulieu32372285.49
Yong Li42972218.82
YuLong Zou5167198.76
Yong Ren6104499.99