[Faculty] Fwd: [CSRC.COLLOQUIUM] "Low Resolution Quantization in Massive MIMO Communications Systems"

[Jose Castillo]

[image: New CSRC Logo.jpg]



DATE:  *Friday, January 24, 2020*



TITLE:

*Low Resolution Quantization in Massive MIMO Communications Systems*


TIME:  *3:00-4:00PM*




LOCATION:
*GMCS 314*




SPEAKER/BIO:


*Dr. A. Lee Swindlehurst, Professor, Department of Electrical Engineering &
Computer Science, University of California-Irvine*





ABSTRACT:

Low-resolution sampling has been extensively studied as a method for
reducing the hardware complexity of communications systems with large
numbers of antennas. While one-bit quantization yields the best energy
efficiency, its severe non-linearity has a significant impact on
performance. Borrowing from the idea of one-bit Sigma-Delta oversampling in
the temporal domain, we describe a corresponding technique in the spatial
domain, in which the quantization noise is shaped away from the signal
directions corresponding to users of interest. We show that for scenarios
typical in cellular systems, where the users are confined to an angular
sector, the one-bit Sigma-Delta approach can provide performance
approaching that of a system with high-resolution ADCs, with significantly
lower hardware complexity.



Host: Jose Castillo

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