Implementation of an Opportunistic Spectrum Access Scheme with Disruption QoS

Published

June 2, 2014

Author(s)

Anirudha Sahoo

Abstract

Opportunistic Spectrum Access (OSA) is one of the models proposed for Dynamic Spectrum Access (DSA). In OSA systems, it is important to restrict the interference of Secondary Users (SUs) to the Primary Users (PUs), so that the performance degradation of PU applications can be bounded. In [1], an OSA scheme based on residual idle time distribution of PU traffic was proposed for a single channel system. In this paper, we suitably modify the above scheme for OFDM-based communication. We present a prototype implementation of the scheme on a GNU Radio based software defined radio (SDR) system using USRP hardware. Using two different QoS metrics, our experiments show that it is possible to restrict the interference to the PU below a given threshold. We also show that a naive method of transmitting for a certain fraction of the mean idle time of the PU traffic may lead to undesirable performance.

Proceedings Title

International Conference on Cognitive Radio Oriented Wireless Networks

Conference Dates

June 2-4, 2014

Conference Location

Oulu

Conference Title

same as Proceedings Title

Pub Type

Conferences

Download Paper

Local Download

Keywords

QoS, dynamic spectrum access, residual white space

Citation

Sahoo, A. (2014), Implementation of an Opportunistic Spectrum Access Scheme with Disruption QoS, International Conference on Cognitive Radio Oriented Wireless Networks, Oulu, -1, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=915251 (Accessed December 26, 2024)