A Comparison of Control-channel Schemes in Opportunistic Spectrum Access Networks using a Configurable Testbed
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.
2017 IEEE Wireless Communications and Networking Conference (WCNC)
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 February 27, 2024)