{"id":1809,"date":"2019-09-20T16:03:06","date_gmt":"2019-09-20T20:03:06","guid":{"rendered":"https:\/\/www.dusers.drexel.edu\/~dig\/?page_id=1809"},"modified":"2019-09-26T19:52:05","modified_gmt":"2019-09-26T23:52:05","slug":"evolution-of-cellular-wireless-technology-1g-to-5g","status":"publish","type":"page","link":"https:\/\/www.techserv.drexel.edu\/~dig\/past-events2019-2020\/evolution-of-cellular-wireless-technology-1g-to-5g\/","title":{"rendered":"Evolution of Cellular Wireless Technology: 1G to 5G"},"content":{"rendered":"

Evolution of Cellular Wireless
\nTechnology: 1G to 5G<\/h1>\n

Time: 3 pm – 4 pm, October 1st (Tuesday)<\/h3>\n

Location: Bossone 302, Drexel University<\/h3>\n

 \"\"<\/span><\/p>\n

Abstract:<\/span><\/b> <\/span> <\/span><\/h3>\n

Over the last <\/span>four<\/span> decades (1980-2020), <\/span>cellular <\/span>wireless<\/span> technology<\/span> has <\/span>revolutionized the communication industry and transformed the lives of people. <\/span>From its infancy<\/span>,<\/span> with <\/span>the advent<\/span> of 1G (AMPS)<\/span>,<\/span> to the pinnacle<\/span>, with <\/span>the <\/span>successful deployment of<\/span> 5G (<\/span>mmWave<\/span>)<\/span>, <\/span>cellular wireless communication <\/span>overcame many challenges. Dr. Gudem led the development of multiple generations of cellular transceiver<\/span>s<\/span> from the dawn of 3G to the dusk of 4G<\/span>. <\/span>In this seminar, Dr. Gudem will take the audience through an intimate journey that highlights the many successes and a few misstep<\/span>s<\/span> over his <\/span>two-decade<\/span> career in the cellular wireless industry.<\/span> <\/span><\/p>\n

Dr Gudem co-invented the <\/span>IntelliCeiver<\/span> technology that enabled deployment of diversity and MIMO in early generations of 3G cellphones<\/span>. This<\/span> improve<\/span>d<\/span> data throughput without significant increase in power consumption <\/span>and<\/span> BoM<\/span> in<\/span> RFR6500<\/span>, a<\/span> flagship product that exceeded over 100<\/span> million<\/span> in volume shipments. Subsequently, Dr. Gudem led the development of the RF cellular transceiver in several generations of System <\/span>on<\/span> Chip<\/span> (SoC)<\/span> products. His research and patents led to the elimination of inter<\/span>–<\/span>stage SAW filters<\/span> in QSC<\/span>1100<\/span> and <\/span>all <\/span>future<\/span> <\/span>Qualcomm <\/span>products<\/span>. This<\/span> challenging problem plagued the industry for five generations of 3G CDMA handsets. <\/span>Despite much hype in the industry regarding SoCs, subsequent generations of cellular products saw the disintegration of SoC and even <\/span>the <\/span>disintegration of <\/span>the <\/span>transceiver into external LNAs followed by <\/span>an <\/span>I\/Q Vector Modulator\/Demodulator<\/span>. <\/span>Dr. Gudem will highlight the key market changes that forced the cellular industry to abandon SoC<\/span> and traverse the path of disintegration. <\/span> <\/span><\/p>\n

Dr. <\/span>Gudem\u2019s<\/span> industry leadership led to one of the rare industry flip-flops, where<\/span> cellular receivers and transmitters<\/span> went from single-ended<\/span> RF input\/output<\/span> to differential then back to single-ended. Dr. Gudem will elaborate on how the explosion of cellular bands from approximately four in 3G\/CDMA to over seventy in 4G\/LTE<\/span> <\/span>precipitated<\/span> th<\/span>is<\/span> change. <\/span>More recently, Dr Gudem led the development of the world\u2019s first 28nm transceiver (WTR3925) that supported receiver carrier aggregation and 4×4 MIMO in 4G\/LTE along with the legacy 2G\/3G. WTR3925 revolutionized the industry in<\/span> power consumption,<\/span> formfactor (3x smaller than previous generations) and BoM. It was used in iPhone 6\/7, Samsung galaxy S7\/S8 and other top-tier cellphones and sold over 80<\/span>0 million<\/span> parts. Prior to joining UCSD, Dr. Gudem led the development of SDR855, the most advanced 14nm transceiver that supported carrier aggregation<\/span> across five bands<\/span> along with 4×4 MIMO. This chip <\/span>made its debut in<\/span> Samsung galaxy S10 commercialized in 2019.  Many more cellphones with SDR855 are expected to be deployed in 2019-2021.<\/span> <\/span> <\/span><\/p>\n

 <\/span><\/p>\n

Biography:<\/span><\/b> <\/span> 
\n<\/span>
\n\"\"<\/a><\/span><\/h3>\n

Prasad Gudem<\/span> received a B. Tech degree in Electrical Engineering from the Indian Institute of Technology, Madras, India in 1988 and a Ph.D. degree in Electrical Engineering from the University of Waterloo, Waterloo, Ontario, Canada in 1996. He was Vice President of Engineering at Qualcomm until 2018 and led the development of multiple generations of cellular transceivers that sold over three billion chips and used in top-tier products such as iPhone, Samsung, etc. Dr. Gudem was instrumental in establishing the Qualcomm RFIC group in Bengaluru that developed low-tier transceivers which sold over one billion parts. He is currently an Adjunct Professor in the Department of Electrical and Computer Engineering, University of California at San Diego, La Jolla, CA, USA. He has 50+ patents and 40+ IEEE publications. He has taught several graduate-level classes and co-advised 12+ Ph.D. students and a recipient of the Graduate Teaching Award. <\/span> <\/span><\/p>\n

 <\/p>\n

 <\/p>\n

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Evolution of Cellular Wireless Technology: 1G to 5G Time: 3 pm – 4 pm, October 1st (Tuesday) Location: Bossone 302, Drexel University   Abstract:   Over the last four decades (1980-2020), cellular wireless technology has revolutionized the communication<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1645,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-1809","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.techserv.drexel.edu\/~dig\/wp-json\/wp\/v2\/pages\/1809","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techserv.drexel.edu\/~dig\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.techserv.drexel.edu\/~dig\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.techserv.drexel.edu\/~dig\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techserv.drexel.edu\/~dig\/wp-json\/wp\/v2\/comments?post=1809"}],"version-history":[{"count":8,"href":"https:\/\/www.techserv.drexel.edu\/~dig\/wp-json\/wp\/v2\/pages\/1809\/revisions"}],"predecessor-version":[{"id":1825,"href":"https:\/\/www.techserv.drexel.edu\/~dig\/wp-json\/wp\/v2\/pages\/1809\/revisions\/1825"}],"up":[{"embeddable":true,"href":"https:\/\/www.techserv.drexel.edu\/~dig\/wp-json\/wp\/v2\/pages\/1645"}],"wp:attachment":[{"href":"https:\/\/www.techserv.drexel.edu\/~dig\/wp-json\/wp\/v2\/media?parent=1809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}