dc.contributor.author |
PulipatI, S |
|
dc.contributor.author |
Ariyarathna, V |
|
dc.contributor.author |
Edussooriya, CUS |
|
dc.contributor.author |
Wijenayake, C |
|
dc.contributor.author |
Wang, X |
|
dc.contributor.author |
Madanayake, A |
|
dc.date.accessioned |
2019-10-22T05:31:57Z |
|
dc.date.available |
2019-10-22T05:31:57Z |
|
dc.identifier.uri |
http://dl.lib.mrt.ac.lk/handle/123/15168 |
|
dc.description.abstract |
A real-time directional sensing system is proposed
for 2:4 GHz ISM band by exploiting the concept of spatiotemporal
spectral white spaces. The proposed system consists
of a 16-element patch antenna array, an FFT-based multi-beam
beamformer and an energy detector. Our system operates at
the baseband with quadrature sampling. Furthermore, digital
architectures for two energy detectors that employ integrate-anddump
circuits are presented. With the multi-beam beamformer,
the first energy detector can be employed to directional sensing
and the second can be employed for both directional and spectral
sensing of radio frequency sources. The multi-beam beamformer
having 16 beams and the energy detectors are implemented
on a ROACH-2 based FPGA system with a 160 MHz clock.
With an 8-point temporal FFT, the second energy detector
provides approximately 20 MHz bandwidth per temporal FFTbin.
Preliminary experimental measurements obtained with Wi-
Fi devices and the first energy detector verify the proof-of-concept
directional sensing of the proposed system. |
en_US |
dc.language.iso |
en |
en_US |
dc.subject |
Cognitive radio |
en_US |
dc.subject |
Directional sensing |
en_US |
dc.subject |
Spectrum sensing |
en_US |
dc.subject |
White space |
en_US |
dc.subject |
FPGA |
en_US |
dc.subject |
Multi-beam beamforming |
en_US |
dc.title |
Real-Time FPGA-Based multi-beam directional sensing of 2.4 GHz ISM RF sources |
en_US |
dc.type |
Conference-Abstract |
en_US |
dc.identifier.faculty |
Engineering |
en_US |
dc.identifier.department |
Department of Electrical Engineering |
en_US |
dc.identifier.year |
2019 |
en_US |
dc.identifier.conference |
Moratuwa Engineering Research Conference - MERCon 2019 |
en_US |
dc.identifier.place |
Moraruwa, Sri Lanka |
en_US |