BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Europe/Riga BEGIN:DAYLIGHT DTSTART:20240331T040000 TZOFFSETFROM:+0200 TZOFFSETTO:+0300 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3 TZNAME:EEST END:DAYLIGHT BEGIN:STANDARD DTSTART:20241027T030000 TZOFFSETFROM:+0300 TZOFFSETTO:+0200 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 TZNAME:EET END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20241007T064200Z UID:6DFAF036-1362-48DC-B43B-84A22835CCE1 DTSTART;TZID=Europe/Riga:20241004T150000 DTEND;TZID=Europe/Riga:20241004T154500 DESCRIPTION:In this talk\, Prof. Quevedo-Teruel will explain the operation of a ray-tracing code that can be used to calculate in a few seconds\, and extremely accurately\, the radiation pattern\, efficiency and gain of len s antennas. Lenses are an excellent candidate for new applications in the millimeter frequency regime\, especially for antennas with low-scan losses . For example\, they are being considered for antenna solutions in 5G/6G\, satellite communications in Low-Earth Orbit constellations and automotive radars. However\, their simulation and optimization are time-consuming du e to their large dimensions in terms of wavelength. In this presentation\, Prof. Quevedo-Teruel will explain the theory of ray-tracing\, its feature s\, and he will demonstrate its operation with some practical examples.\n\ nSpeaker(s): Prof. Dr. Oscar Quevedo-Teruel\n\nAgenda: \n09:00–13:30 202 4 IEEE 65th International Scientific Conference on Information Technology and Management Science of Riga Technical University (ITMS'2024)\n13:30–1 4:00 Coffee Break & MTTW Registration\n14:00–14:15 MTTW Opening Ceremony \nProf. Dr. Anna Litviņenko\, Dr. Andrejs Romānovs\, Prof. Dr. Nadežda Kuņicina\n14:15–15:00 Keynote Lecture Pulse Position Modulation (PPM) f or Energy-Efficient Optical Communication Over Large Distances by Prof. Dr . Artūrs Āboltiņš\n15:00–15:45 Keynote Lecture A Fast Ray-Tracing Co de for the Simulation of Lens Antennas by Prof. Dr. Oscar Quevedo-Teruel\n 15:45–17:45 Session A1: Microwave Technology and Wireless Communications In-Person\nChairs: Dr. Deniss Kolosovs\, Prof. Dr. Oscar Quevedo-Teruel\n 15:45–16:00 Experimental Exploration of OTFS-Based 28 GHz UWB Pulsed Dop pler Radar\nNikolajs Tihomorskis\; Sandis Migla\; Kristaps Rubuls\; Jurijs Sadovskis\; Arturs Aboltins\n16:00–16:15 Enhancing Classification Accur acy in Cooperative Spectrum Sensing Using Machine Learning\nBin Hu\; Hidea ki Goto\; Takuo Suganuma\n16:15–16:30 On Cyber Threats in Military Commu nication Nets\nManfred Sneps-Sneppe\n16:30–16:45 Finite State Machine Mo del Checking of a Wave-Union-Based TDC FPGA System\nJakovs Ratners\; Nikol ajs Tihomorskis\; Sandis Migla\; Arturs Aboltins\n16:45–17:00 Wide Tunin g Range X-Band LC-VCO Designed in 90 nm CMOS Technology\nBenas Petrulis\; Vytautas Mačaitis\; Vaidotas Barzdėnas\; Gediminas Gražulevičius\; Sen Wang\; Chieh Chuang\n17:00–17:15 Experimental Study on Quadrature Chaos Shift Keying Communication System\nDarja Čirjuļina\; Ruslans Babajans\; Deniss Kolosovs\n17:15–17:30 Ultra-Wideband Geodesic Lens Antenna\nLaia Costa-Cid\; Pilar Castillo-Tapia\; Cristina Yepes\; Oscar Quevedo-Teruel\ n17:30–17:45 Discrete Sequential Implementation of Chaos Oscillators for FPGA Integration\nRuslans Babajans\; Darja Čirjuļina\; Deniss Kolosovs\ n17:45–18:00 Closing and Awards Ceremony\n\nRoom: 2.12\, Bldg: 5\, Paula Valdena street\, Riga\, Latvia\, Latvia\, LV-1048 LOCATION:Room: 2.12\, Bldg: 5\, Paula Valdena street\, Riga\, Latvia\, Latv ia\, LV-1048 ORGANIZER:anna.litvinenko@rtu.lv SEQUENCE:3 SUMMARY:Keynote Lecture: A Fast Ray-Tracing Code for the Simulation of Lens Antennas by Prof. Dr. Oscar Quevedo-Teruel URL;VALUE=URI:https://events.vtools.ieee.org/m/436642 X-ALT-DESC:Description: <br /><p><em>In this talk\, Prof. Quevedo-Teruel wi ll explain the operation of a ray-tracing code that can be used to calcula te in a few seconds\, and extremely accurately\, the radiation pattern\, e fficiency and gain of lens antennas. Lenses are an excellent candidate for new applications in the millimeter frequency regime\, especially for ante nnas with low-scan losses. For example\, they are being considered for ant enna solutions in 5G/6G\, satellite communications in Low-Earth Orbit cons tellations and automotive radars. However\, their simulation and optimizat ion are time-consuming due to their large dimensions in terms of wavelengt h. In this presentation\, Prof. Quevedo-Teruel will explain the theory of ray-tracing\, its features\, and he will demonstrate its operation with so me practical examples.</em></p><br /><br />Agenda: <br /><table style="wid th: 99.9955%\; height: 831.878px\;">\n<tbody>\n<tr style="height: 49.0741p x\;">\n<td class="table-itemA" style="width: 4.98758%\; height: 49.0741px\ ;">09:00&ndash\;13:30</td>\n<td class="table-itemB" style="width: 92.3069% \; height: 49.0741px\;"><strong>2024 IEEE 65th International Scientific Co nference on Information Technology and Management Science of Riga Technica l University (ITMS'2024)</strong></td>\n</tr>\n<tr style="height: 49.0741p x\;">\n<td class="table-itemA" style="width: 4.98758%\; height: 49.0741px\ ;">13:30&ndash\;14:00</td>\n<td class="table-itemB" style="width: 92.3069% \; height: 49.0741px\;"><strong>Coffee Break</strong>&nbsp\;&amp\;&nbsp\;< strong>MTTW Registration</strong></td>\n</tr>\n<tr style="height: 49.0741p x\;">\n<td class="table-itemA" style="width: 4.98758%\; height: 49.0741px\ ;">14:00&ndash\;14:15</td>\n<td class="table-itemB" style="width: 92.3069% \; height: 49.0741px\;"><strong>MTTW Opening Ceremony</strong><br>Prof. Dr . Anna Litviņenko\, Dr. Andrejs Romānovs\, Prof. Dr. Nadežda Kuņicina< /td>\n</tr>\n<tr style="height: 66.2269px\;">\n<td class="table-itemA" sty le="width: 4.98758%\; height: 66.2269px\;">14:15&ndash\;15:00</td>\n<td cl ass="table-itemB" style="width: 92.3069%\; height: 66.2269px\;">Keynote Le cture&nbsp\;<strong>P</strong><span class="TextRun SCXW245091299 BCX2" lan g="EN-GB" xml:lang="EN-GB" data-contrast="auto"><strong><span class="Norma lTextRun SCXW245091299 BCX2">ulse Position Modulation&nbsp\;</span><span c lass="NormalTextRun SCXW245091299 BCX2">(PPM)&nbsp\;</span><span class="No rmalTextRun SCXW245091299 BCX2">for Energy</span><span class="NormalTextRu n SCXW245091299 BCX2">-Efficient O</span><span class="NormalTextRun SCXW24 5091299 BCX2">ptical Communication Over</span>&nbsp\;L</strong><span class ="NormalTextRun SCXW245091299 BCX2"><strong>arge Distances</strong> by Pro f. Dr. Artūrs Āboltiņ&scaron\;</span></span></td>\n</tr>\n<tr style="he ight: 36.2639px\;">\n<td class="table-itemA" style="width: 4.98758%\; heig ht: 36.2639px\;">15:00&ndash\;15:45</td>\n<td class="table-itemB" style="w idth: 92.3069%\; height: 36.2639px\;">Keynote Lecture&nbsp\;<strong>A Fast Ray-Tracing Code for the Simulation of Lens Antennas</strong> by Prof. Dr . Oscar Quevedo-Teruel</td>\n</tr>\n<tr style="height: 533.044px\;">\n<td class="table-itemA" style="width: 4.98758%\; height: 533.044px\;">15:45&nd ash\;17:45</td>\n<td class="table-itemB" style="width: 92.3069%\; height: 533.044px\;"><strong>Session A1: Microwave Technology and Wireless Communi cations In-Person</strong><br>Chairs: Dr. Deniss Kolosovs\, Prof. Dr. Osca r Quevedo-Teruel\n<table style="width: 89.8365%\; height: 358.148px\;">\n< tbody>\n<tr style="height: 44.7685px\;">\n<td class="table-itemA" style="w idth: 9.84136%\; height: 44.7685px\;">15:45&ndash\;16:00</td>\n<td class=" table-itemB" style="width: 86.8653%\; height: 44.7685px\;"><strong>Experim ental Exploration of OTFS-Based 28 GHz UWB Pulsed Doppler Radar</strong><b r><em><strong>Nikolajs Tihomorskis</strong>\; Sandis Migla\; Kristaps Rubu ls\; Jurijs Sadovskis\; Arturs Aboltins</em></td>\n</tr>\n<tr style="heigh t: 44.7685px\;">\n<td class="table-itemA" style="width: 9.84136%\; height: 44.7685px\;">16:00&ndash\;16:15</td>\n<td class="table-itemB" style="widt h: 86.8653%\; height: 44.7685px\;"><strong>Enhancing Classification Accura cy in Cooperative Spectrum Sensing Using Machine Learning</strong><br><em> <strong>Bin Hu</strong>\; Hideaki Goto\; Takuo Suganuma</em></td>\n</tr>\n <tr style="height: 44.7685px\;">\n<td class="table-itemA" style="width: 9. 84136%\; height: 44.7685px\;">16:15&ndash\;16:30</td>\n<td class="table-it emB" style="width: 86.8653%\; height: 44.7685px\;"><strong>On Cyber Threat s in Military Communication Nets</strong><br><em><strong>Manfred Sneps-Sne ppe</strong></em></td>\n</tr>\n<tr style="height: 44.7685px\;">\n<td class ="table-itemA" style="width: 9.84136%\; height: 44.7685px\;">16:30&ndash\; 16:45</td>\n<td class="table-itemB" style="width: 86.8653%\; height: 44.76 85px\;"><strong>Finite State Machine Model Checking of a Wave-Union-Based TDC FPGA System</strong><br><em><strong>Jakovs Ratners</strong>\; Nikolajs Tihomorskis\; Sandis Migla\; Arturs Aboltins</em></td>\n</tr>\n<tr style= "height: 44.7685px\;">\n<td class="table-itemA" style="width: 9.84136%\; h eight: 44.7685px\;">16:45&ndash\;17:00</td>\n<td class="table-itemB" style ="width: 86.8653%\; height: 44.7685px\;"><strong>Wide Tuning Range X-Band LC-VCO Designed in 90 nm CMOS Technology</strong><br><em><strong>Benas Pet rulis</strong>\; Vytautas Mačaitis\; Vaidotas Barzdėnas\; Gediminas Gra žulevičius\; Sen Wang\; Chieh Chuang</em></td>\n</tr>\n<tr style="height : 44.7685px\;">\n<td class="table-itemA" style="width: 9.84136%\; height: 44.7685px\;">17:00&ndash\;17:15</td>\n<td class="table-itemB" style="width : 86.8653%\; height: 44.7685px\;"><strong>Experimental Study on Quadrature Chaos Shift Keying Communication System</strong><br><em><strong>Darja Či rjuļina</strong>\; Ruslans Babajans\; Deniss Kolosovs</em></td>\n</tr>\n< tr style="height: 44.7685px\;">\n<td class="table-itemA" style="width: 9.8 4136%\; height: 44.7685px\;">17:15&ndash\;17:30</td>\n<td class="table-ite mB" style="width: 86.8653%\; height: 44.7685px\;"><strong>Ultra-Wideband G eodesic Lens Antenna</strong><br><em><strong>Laia Costa-Cid</strong>\; Pil ar Castillo-Tapia\; Cristina Yepes\; Oscar Quevedo-Teruel</em></td>\n</tr> \n<tr style="height: 44.7685px\;">\n<td class="table-itemA" style="width: 9.84136%\; height: 44.7685px\;">17:30&ndash\;17:45</td>\n<td class="table- itemB" style="width: 86.8653%\; height: 44.7685px\;"><strong>Discrete Sequ ential Implementation of Chaos Oscillators for FPGA Integration</strong><b r><em><strong>Ruslans Babajans</strong>\; Darja Čirjuļina\; Deniss Kolos ovs</em></td>\n</tr>\n</tbody>\n</table>\n</td>\n</tr>\n<tr style="height: 49.1204px\;">\n<td class="table-itemA" style="width: 4.98758%\; height: 4 9.1204px\;">17:45&ndash\;18:00</td>\n<td class="table-itemB" style="width: 92.3069%\; height: 49.1204px\;"><strong>Closing and Awards Ceremony</stro ng></td>\n</tr>\n</tbody>\n</table> END:VEVENT END:VCALENDAR