A Comparison of Control-channel Schemes in Opportunistic Spectrum Access Networks using a Configurable Testbed

Published

May 10, 2017

Author(s)

Camillo Gentile

Abstract

In this paper, the control channel for secondary users in opportunistic spectrum access networks is considered. Given a licensed bandwidth for primary users, we compare the performance of three control-channel schemes: dedicated, underlay, and overlay. The key performance metric for comparison is the primary data rate, i.e. how it is affected by interference from secondary control messaging. The comparison is conducted via a configurable testbed implementation of a primary and a secondary network, each composed from two USRP radios connected through an RF channel emulator. The MATLAB/Simulink software toolbox is used to develop the baseband models for the radio transceivers. Trade-offs between the three schemes, as well as insight on the practical implementation of NC-OFDM in opportunistic spectrum access systems, are provided.

Proceedings Title

2017 IEEE Wireless Communications and Networking Conference (WCNC)

Conference Dates

March 19-22, 2017

Conference Location

San Francisco, CA, US

Pub Type

Conferences

Download Paper

https://doi.org/10.1109/WCNC.2017.7925901

Local Download

Keywords

cognitive radio, opportunistic spectrum access, common control channel, USRP, MATLAB/Simulink

Citation

Gentile, C. (2017), A Comparison of Control-channel Schemes in Opportunistic Spectrum Access Networks using a Configurable Testbed, 2017 IEEE Wireless Communications and Networking Conference (WCNC), San Francisco, CA, US, [online], https://doi.org/10.1109/WCNC.2017.7925901, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918602 (Accessed April 30, 2026)

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