Research Article
A Hardware Prototype of a Flexible Spectrum Sensing Node for Smart Sensing Networks
@ARTICLE{10.4108/eai.5-4-2016.151143, author={Ahmed Elsokary and Peter Lohmiller and V\^{a}clav Valenta and Hermann Schumacher}, title={A Hardware Prototype of a Flexible Spectrum Sensing Node for Smart Sensing Networks}, journal={EAI Endorsed Transactions on Cognitive Communications}, volume={2}, number={6}, publisher={EAI}, journal_a={COGCOM}, year={2016}, month={4}, keywords={Spectrum Sensing, Multiband, Cognitive Radio, FPGA Implementation, Hardware Prototype, Periodogram, PSD, FFT}, doi={10.4108/eai.5-4-2016.151143} }- Ahmed Elsokary
Peter Lohmiller
Václav Valenta
Hermann Schumacher
Year: 2016
A Hardware Prototype of a Flexible Spectrum Sensing Node for Smart Sensing Networks
COGCOM
EAI
DOI: 10.4108/eai.5-4-2016.151143
Abstract
In this paper we present a prototype for a spectrum sensing node for a cognitive radio sensing network. Our prototype consists of a custom down-conversion front-end with an RF input frequency range from 300 MHz to 3 GHz and a Power Spectral Density (PSD) estimation algorithm implemented on a Virtex-6 Field Programmable Gate Array (FPGA). The base-band processing part is capable of calculating the PSD for a bandwidth upto 245.76 MHz achieving a resolution of 60 kHz and an online variable averaging functionality with a maximum of 32767 averages. We show the arithmetic optimization techniques used for the PSD evaluation to optimize FPGA resource usage. Real time performance and calculation of the PSD for real world signals in the GSM downlink, DECT and the UHF DVB-T bands are demonstrated.
Copyright © 2016 Ahmed Elsokary et al., licensed to EAI. This is an open access article distributed under the terms of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.