CISL Seminar: Coherent Hybrid Massive MIMO for Advanced 4G/5G Radio Access Networks

Date: 2:00 pm, September 21, 2018
Location: 750 CEPSR
Speaker: Dr. Mihai Banu Founder, CTO & VP R&D Blue Danube Systems, Warren New Jersey

Abstract: Recently, experts in academia and industry have been strongly advocating the concept of Massive MIMO for application in 4G and 5G systems. While the push for larger base station antenna aperture is likely the right idea for cellular and other applications, there are important subtleties, which make the practical application of Massive MIMO far from straightforward. The original version of this concept requires digitization of every antenna element and evades the need of RF coherency by using pilot signals and extensive digital signal processing. This brute force approach results in expensive and power hungry systems with performance, which is highly sensitive to practical impairments. In this presentation we show that by introducing economical RF coherency, i.e., by designing the Massive MIMO system on a low-cost phase-array platform, the radio hardware can be simplified significantly without fundamental loss of performance and with improved resilience to practical impairments. We will describe the Blue Danube hybrid solution to Coherent Massive MIMO and will present field results from Blue Danube products operating in mid-band spectrum.

Biography: Dr. Banu has over 30 year experience in circuits and systems R&D, with emphasis on analog, radio frequency and mixed-signal integrated circuits. His experience encompasses many areas from invention and demonstration of new circuits and system concepts, to design methodologies and product development. Dr. Banu is Founder of Blue Danube Systems, which received Series A venture capital funding and started operations in 2013. He developed the Blue Danube Systems technology concepts at MHI Consulting, a small consulting firm founded and owned by Dr. Banu since 2006. Prior to that, he was R&D director at Agere Systems, working on analog circuits, RF systems for wireless LANs and wireless circuits research. From 1995 to 2000, Dr. Banu was Head of the Communications Circuits Research department at Lucent Technologies, where he was responsible for advanced work in circuit design and Si technology process-device enhancements including SiGe BiCMOS. From 1980 to 1995, he was a Member of Technical Staff at AT&T Bell Laboratories in the Communications Sciences Division, the Physical Sciences Division and the VLSI Research Department. Dr. Banu is author of more than 30 technical papers, several book chapters and many U.S. and international patents. As a recognized electrical engineering expert, he was invited to contribute in many panels and workshops at major international conferences, as well as teach short courses. He received his bachelor’s, master’s, and Ph.D. degrees in electrical engineering from Columbia University and he is an IEEE Fellow.

Host: Prof. Yannis P. Tsividis

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