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Real-Time FPGA-Based multi-beam directional sensing of 2.4 GHz ISM RF sources

Show simple item record PulipatI, S Ariyarathna, V Edussooriya, CUS Wijenayake, C Wang, X Madanayake, A 2019-10-22T05:31:57Z 2019-10-22T05:31:57Z
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 Moraruwa, Sri Lanka en_US

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