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Columbia University’s Data Science Institute Presents:
DATA SCIENCE DAY

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Wednesday, April 6 • 2:00pm - 4:30pm
Wireless Demonstrator with Analog-Enabled Digital MIMO Receivers for High Data Rate Wireless Communication [D27]

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Wireless MIMO communication systems significantly improve data rate and data reliability with the spatial selectivity provided by multiple antennas and digital signal processing. However, the RF/analog circuits and data-converters in receivers are exposed to spatial interference due to the lack of spatial selectivity in analog domain.     In this wireless demonstrator, an 8-element spatio-spectral-filtering MIMO receiver array uses a 2×4 antenna array to detect a weak desired signal in the presence of a stronger spatially-distinct in-band blocker. 45 simultaneous beams in a 5×9 array are formed digitally. An image shows 45 pixels, the brightness of each indicates the received signal strength on a corresponding beam.     Without RF/analog spatial rejection, the receiver array outputs are saturated by the strong blocker. The desired signals cannot be detected on the image. With RF/analog spatial rejection, receiver saturation is prevented. The blocker disappears in the image and the desired weak signal can be clearly detected.

Demo/Poster Presenter
avatar for Linxiao Zhang

Linxiao Zhang

PhD Candidate in Electrical Engineering, Columbia Engineering
Linxiao Zhang graduated from Nanyang Technological University, Singapore, in 2011 with a Bachelor's degree in Electrical and Electronics Engineering. He interned at the Institute of Microelectronics, Singapore, for five months in 2009. In Summer 2012, he joined Dr. Harish Krishnaswamy's research group as a PhD-track student.



Wednesday April 6, 2016 2:00pm - 4:30pm
Roone Arledge Auditorium Lerner Hall, Columbia University 2920 Broadway, New York, NY 10040