The overhead associated with establishing and operating the link is a major source of inefficiency in millimeter wave communication systems. One significant source of overhead is the time spent training the transmit and receive beams, which occurs during estimation, feedback, channel tracking. Fortunately, there is side information available through sensing or communication available in bands outside of the millimeter wave communication band. This talk explains why beam configuration in millimeter wave systems is a major source of overhead. It then shows how out-of-band information can be used to reduce that overhead. Different types of out-of-band data are described including position, channel state information derived from another communication band, and sensing in the form of radar and video. Examples of the application of out-of-band information are shown including leveraging inverse finger printing and weighted compressed beam training.
Robert W. Heath Jr. received his Ph.D. in electrical engineering from Stanford University. He is a Cullen Trust for Higher Education Endowed Professor in the Department of Electrical and Computer Engineering at the University of Texas at Austin, where he is a member of the Wireless Networking and Communications Group. He is also the president and CEO of MIMO Wireless Inc. and chief innovation officer at Kuma Signals LLC. Heath is a recipient of the 2012 Signal Processing Magazine Best Paper award, a 2013 Signal Processing Society best paper award, the 2014 EURASIP Journal on Advances in Signal Processing best paper award, the 2014 Journal of Communications and Networks best paper award, the 2016 IEEE Communications Society Fred W. Ellersick Prize and the 2016 IEEE Communications Society and Information Theory Society Joint Paper Award. His books include “Introduction to Wireless Digital Communication” (Prentice Hall; 2017), “Digital Wireless Communication: Physical Layer Exploration Lab Using the NI USRP” (National Technology and Science Press; 2012) and “Millimeter Wave Wireless Communications” (co-author; Prentice Hall; 2014). Heath is a licensed amateur radio operator, a registered professional engineer in Texas and a Fellow of IEEE.