BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Turkey BEGIN:DAYLIGHT DTSTART:20380119T061407 TZOFFSETFROM:+0300 TZOFFSETTO:+0300 RRULE:FREQ=YEARLY;BYDAY=3TU;BYMONTH=1 TZNAME:+03 END:DAYLIGHT BEGIN:STANDARD DTSTART:20160907T000000 TZOFFSETFROM:+0300 TZOFFSETTO:+0300 RRULE:FREQ=YEARLY;BYDAY=1WE;BYMONTH=9 TZNAME:+03 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20190407T222720Z UID:3EA57768-E7E2-4681-AC1C-A24C542102D8 DTSTART;TZID=Turkey:20190327T133000 DTEND;TZID=Turkey:20190327T153000 DESCRIPTION:Prof. Walid Ali-Ahmad\n\nUC San Diego\n\nTel: +1 858-228-0660\n E-mail: walid.aa@gmail.com\n\nWalid Ali-Ahmad is currently with Facebook C onnectivity team as Connectivity Specialist and RF/Analog lead\, with focu s on 5G\, WiGig\, Microwave\, and mmW Radio Architecture & Systems Design for Connectivity & VR Systems. From July 2014 until December 2017\, he was a VP of Technology at Qualcomm\, Inc\, and was involved in the architectu re and RF systems design of advanced RF Front-Ends and transceiver systems for 4G and sub-6GHz 5G User Equipment (UE). Between January 2016 and Dec 2018\, he was associated with UC San Diego as Visiting Professor in the EC E department\, involved in 5G research and focused on Wireless RF systems engineering. Before July 2014\, he was a senior director of Technology at Mediatek\, and led the architecture and RF systems design of low-cost 2G/3 G/LTE integrated transceivers and SoCs for China market feature phones and smartphones. He was a visiting professor in the ECE department at UC San Diego during Winter term 2016\, and was an associate professor in the Elec trical Engineering department at the American University of Beirut between Sept 2004 and Sept 2007\, with focus on applied electromagnetics and comm unication circuits and systems. Between July 1997 and July 2004\, he was a principal member of Technical staff at Maxim Integrated products\, and le d the systems development of the first low-cost low-power WCDMA direct-con version transceiver IC in SiGe BiCMOS. He holds several patents in the are a of RF front-end tuning\, and has published many articles and given many talks in the area of RF systems design for cellular and millimeter-wave ra dio systems. He is a senior IEEE member and an IEEE distinguished microwav e lecturer for the 2017 – 2019 term. He has been part of the IEEE RFIC c onference technical program and steering committees since 2004\; he was th e general chair of the RFIC 2018 conference\, held in Philadelphia\, and c urrently\, is serving on the RFIC conference executive committee.\n\nAdvan ced RF FrontEnd and Transceiver Systems Design Overview for Carrier Aggreg ation based 4G/5G Radios\nOver the past few years\, there has been an expl osion in the mobile data usage due to increasing number of tablets and sma rt phones. To support such demand\, wider transmission bandwidths are need ed\, and hence\, the technique of Carrier Aggregation (CA) has been introd uced in 4G cellular systems. This enables scalable bandwidth expansion bey ond the single LTE carrier by aggregating two or more LTE component carrie rs of similar or different baseband bandwidth\, which can be chosen from t he same (intra-band) or different (inter-band) 3GPP frequency bands. Furth ermore\, CA is supported by both FDD and TDD modes\, and this offers the o ptimum flexibility in the way the spectrum is utilized and how the network scheduling is configured. In order to push towards 5G data rates (>1Gbps) \, leveraging more antennas and transmitting more bits per symbol to incre ase spectral efficiency requires the use of MIMO and higher-order modulati on techniques. This presentation focuses on discussing the RF system archi tectural challenges for LTE-Advanced and sub-6GHz 5G NR based user equipme nt (UE) radio\, and the resultant increased complexity in the radio due to the use of CA\, MIMO\, and higher order modulation techniques; furthermo re\, concurrency and coexistence scenarios with other radio access technol ogies (RAT) are considered in how they further add to the complexity of th e RF frontend and to its linearity requirements.\n\nSpeaker(s): Prof. Wali d Ali-Ahmad\, \n\nIstanbul\, Istanbul\, Türkiye LOCATION:Istanbul\, Istanbul\, Türkiye ORGANIZER:ozergul@metu.edu.tr SEQUENCE:0 SUMMARY:IEEE AP/MTT/EMC/ED TURKEY CHAPTER DISTINGUISHED LECTURER SEMINAR BY PROF. WALID ALI-AHMAD URL;VALUE=URI:https://events.vtools.ieee.org/m/197371 X-ALT-DESC:Description: <br /><p>Prof. Walid Ali-Ahmad</p>\n<p>UC San Diego </p>\n<p>Tel:&nbsp\;+1 858-228-0660<br />E-mail:&nbsp\;walid.aa@gmail.com< /p>\n<p>&nbsp\;</p>\n<p><strong>Walid Ali-Ahmad</strong>&nbsp\;is currentl y with Facebook Connectivity team as Connectivity Specialist and RF/Analog lead\, with focus on 5G\, WiGig\, Microwave\, and mmW Radio Architecture &amp\; Systems Design for Connectivity &amp\; VR Systems. From July 2014 u ntil December 2017\, he was a VP of Technology at Qualcomm\, Inc\, and was involved in the architecture and RF systems design of advanced RF Front-E nds and transceiver systems for 4G and sub-6GHz 5G User Equipment (UE). Be tween January 2016 and Dec 2018\, he was associated with UC San Diego as V isiting Professor in the ECE department\, involved in 5G research and focu sed on Wireless RF systems engineering. Before July 2014\, he was a senior director of Technology at Mediatek\, and led the architecture and RF syst ems design of low-cost 2G/3G/LTE integrated transceivers and SoCs for Chin a market feature phones and smartphones. He was a visiting professor in th e ECE department at UC San Diego during Winter term 2016\, and was an asso ciate professor in the Electrical Engineering department at the American U niversity of Beirut between Sept 2004 and Sept 2007\, with focus on applie d electromagnetics and communication circuits and systems. Between July 19 97 and July 2004\, he was a principal member of Technical staff at Maxim I ntegrated products\, and led the systems development of the first low-cost low-power WCDMA direct-conversion transceiver IC in SiGe BiCMOS. He holds several patents in the area of RF front-end tuning\, and has published ma ny articles and given many talks in the area of RF systems design for cell ular and millimeter-wave radio systems. He is a senior IEEE member and an IEEE distinguished microwave lecturer for the 2017 &ndash\; 2019 term. He has been part of the IEEE RFIC conference technical program and steering c ommittees since 2004\; he was the general chair of the RFIC 2018 conferenc e\, held in Philadelphia\, and currently\, is serving on the RFIC conferen ce executive committee.</p>\n<p><strong>Advanced RF FrontEnd and Transceiv er Systems Design Overview for Carrier Aggregation based 4G/5G Radios</str ong><br />Over the past few years\, there has been an explosion in the mob ile data usage due to increasing number of tablets and smart phones. To su pport such demand\, wider transmission bandwidths are needed\, and hence\, the technique of Carrier Aggregation (CA) has been introduced in 4G cellu lar systems. This enables scalable bandwidth expansion beyond the single L TE carrier by aggregating two or more LTE component carriers of similar or different baseband bandwidth\, which can be chosen from the same (intra-b and) or different (inter-band) 3GPP frequency bands. Furthermore\, CA is s upported by both FDD and TDD modes\, and this offers the optimum flexibili ty in the way the spectrum is utilized and how the network scheduling is c onfigured. In order to push towards 5G data rates (&gt\;1Gbps)\, leveragin g more antennas and transmitting more bits per symbol to increase spectral efficiency requires the use of MIMO and higher-order modulation technique s. This presentation focuses on discussing the RF system architectural cha llenges for LTE-Advanced and sub-6GHz 5G NR based user equipment (UE) radi o\, and the resultant increased complexity in the radio due to the use of CA\, MIMO\, and higher order modulation techniques; furthermore\, concurr ency and coexistence scenarios with other radio access technologies (RAT) are considered in how they further add to the complexity of the RF fronten d and to its linearity requirements.</p> END:VEVENT END:VCALENDAR