?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Cognitive+Beamforming+Design+for+Dual-Function+Radar-Communications&rft.creator=Le%2C+Tuan+A&rft.creator=Ku%2C+Ivan&rft.creator=Yang%2C+Xin-She&rft.creator=Masouros%2C+Christos&rft.creator=Le-Ngoc%2C+Tho&rft.description=This+paper+introduces+a+dual-function+radar-communication+(DFRC)+system+with+cognitive+radio+capability+to+tackle+the+spectral+scarcity+problem+in+wireless+communications.+Particularly%2C+a+cognitive+DFRC+system+operates+on+a+spectrum+owned+by+a+primary+system+to+simultaneously+perform+data+communication+and+target+tracking+while+maintaining+its+interference+to+the+primary+users+(PUs)+below+a+certain+threshold.+To+achieve+this%2C+an+optimization+problem+is+formulated+to+jointly+design+the+beamforming+vectors+for+both+the+radar+and+communication+functions+in+minimizing+the+mean+square+error+(MSE)+of+the+beam+patterns+between+the+designed+and+desired+waveforms+under+three+constraints%3A+i)+the+signal-to-interference-plus-noise+ratio+(SINR)+at+each+data+communication+user%3B+ii)+the+perantenna+transmit+power%3B+and+iii)+the+interference+imposed+on+each+PU.+The+semidefinite+relaxation+technique+is+utilized+to+search+for+the+optimal+solution+to+the+optimization+problem.+The+simulation+results+indicate+that+our+proposed+cognitive+DFRC+approach+can+effectively+protect+the+PUs+while+simultaneously+perform+its+communication+and+radar+functions.&rft.subject=Vehicular+and+wireless+technologies%2C+Target+tracking%2C+Array+signal+processing%2C+Simulation%2C+Interference%2C+Radar%2C+Vectors&rft.publisher=IEEE&rft.date=2024-09-25&rft.type=Proceedings+paper&rft.language=eng&rft.source=+++++In%3A++2024+IEEE+99th+Vehicular+Technology+Conference+(VTC2024-Spring)%2C+Proceedings.++(pp.+pp.+1-5).++IEEE%3A+Singapore%2C+Singapore.+(2024)+++++&rft.format=application%2Fpdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10199591%2F1%2FVTC_2024%2520%25285%2529.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10199591%2F&rft.rights=open