{"632073":{"#nid":"632073","#data":{"type":"event","title":"3D SYSTEMS PACKAGING RESEARCH CENTER DISTINGUISHED LECTURE: Code Domain Approaches to High Dynamic Range for Full Duplex Communication and Spectrum Compression and Linearized RF Silicon Photonics ","body":[{"value":"\u003Ch3\u003ECode Domain Approaches to High Dynamic Range for Full Duplex Communication and Spectrum Compression and Linearized RF Silicon Photonics\u003C\/h3\u003E\r\n\r\n\u003Ch5\u003EProfessor of Electrical and Computer Engineering, University of California \u0026ndash; Santa Barbara\u003C\/h5\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E: 5G offers the next step towards communication services that trade-off data rate, latency, coverage, and power consumption. However, an outstanding challenge not addressed with 5G is realizing a wireless technology that can transmit and receive in any RF channel under any interference environment. Considerable possibilities exist to investigate new wireless circuits and systems below 6 GHz. An example is full-duplex communication, which could theoretically improve the spectral efficiency or channel estimation. However, full duplex places significant dynamic range requirements on the receiver to tolerate the strong transmitter interference. I will present a code-domain multiple access technique that can realize more than 120 dB of self-interference rejection in the receiver while tolerating 30 dBm of transmit power. A key feature is code-domain filtering to relax the potential distortion generated in the receiver and realize a full-duplex link without significant power penalties at RF bands. Additionally, I will describe a complementary approach to digital modulation that mitigates out-of-band emissions due to switching. Code-domain transmitters and receivers have been realized in 45-nm SOI CMOS and will be presented for model\/hardware correlation. I will also present research efforts that re-evaluate RF silicon photonic receivers to support RF and millimeter-wave MIMO. Silicon photonic devices offer a low-cost platform that might potentially support co integration of electronic and photonic circuitry. To overcome the spur-free dynamic range issues confronting RF electro-optic conversion, we will briefly review approaches to improve the linearity of silicon photonic modulators.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EBio: \u003C\/strong\u003EJames F. Buckwalter is currently a Professor of Electrical and Computer Engineering with UCSB and was the recipient of a 2004 IBM Ph.D. Fellowship, 2007 Defense Advanced Research Projects Agency (DARPA) Young Faculty Award, 2011 NSF CAREER Award, and 2015 IEEE MTT-S Young Engineer Award. He is a senior member of the IEEE and has published more than 170 conference and journal papers on research related to RF, millimeter-wave, and high-speed optoelectronic circuits and systems.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"To overcome the spur-free dynamic range issues confronting RF electro-optic conversion, we will briefly review approaches to improve the linearity of silicon photonic modulators."}],"uid":"27863","created_gmt":"2020-02-04 15:34:39","changed_gmt":"2020-02-04 15:34:39","author":"Christa Ernst","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2020-02-25T15:00:00-05:00","event_time_end":"2020-02-25T16:00:00-05:00","event_time_end_last":"2020-02-25T16:00:00-05:00","gmt_time_start":"2020-02-25 20:00:00","gmt_time_end":"2020-02-25 21:00:00","gmt_time_end_last":"2020-02-25 21:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"213791","name":"3D Systems Packaging Research Center"},{"id":"198081","name":"Georgia Electronic Design Center (GEDC)"},{"id":"197261","name":"Institute for Electronics and Nanotechnology"},{"id":"1271","name":"NanoTECH"},{"id":"213771","name":"The Center for MEMS and Microsystems Technologies"}],"categories":[],"keywords":[{"id":"180543","name":"5G wireless communication"},{"id":"176445","name":"silicon photonics"},{"id":"183833","name":"full-duplex communication"},{"id":"183834","name":"code-domain filtering"},{"id":"1925","name":"Electrical and Computer Engineering"},{"id":"12072","name":"3D Systems Packaging Research Center"},{"id":"129691","name":"advanced packaging research"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"177814","name":"Postdoc"},{"id":"78771","name":"Public"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Ch5\u003E\u003Cstrong\u003ECarol Mills\u0026nbsp;\u003C\/strong\u003E\u003C\/h5\u003E\r\n\r\n\u003Cp\u003EPRC Program \u0026amp; Operations Manager,\u003Cbr \/\u003E\r\nPettit Building, Room 108\u003Cbr \/\u003E\r\n(404) 894-3662\u003Cbr \/\u003E\r\n\u003Ca href=\u0022mailto: \u200bcarol.mills@ien.gatech.edu\u0022\u003Ecarol.mills@ien.gatech.edu\u003C\/a\u003E\u003C\/p\u003E\r\n","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}