Impact of RF Processing and Switching Errors in Lens–Based Massive MIMO Systems (Invited Paper)

Harsh Tataria, Michail Matthaiou, Peter J. Smith, George C. Alexandropoulos, Vincent F. Fusco

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)
172 Downloads (Pure)

Abstract

Lens–based massive multiple–input multiple–output (MIMO) systems have considerable potential to reduce signal processing cost at millimeter–wave frequencies. As a result, they are able to lower the effective channel dimension via beam selection, realized with a network of radio–frequency (RF) switches. However, lens arrays suffer from the inherent quantization of the beamspace, as well as errors due to imperfections in the lens construction itself. Unlike prior works, we model the above effects in the context of a Rotman lens–enabled massive MIMO system. Assuming line–of–sight propagation, we derive analytical approximations of the expected (average) signal–to–interference–plus–noise-ratio (SINR) of a terminal and ergodic sum spectral efficiency of the system. Our analysis caters for spillover losses in the Rotman lens and imperfections in the RF switching matrix, caused by impedance mismatches, as well as poor port isolation. The presented numerical results show large degradation in the expected SINR and ergodic spectral efficiency when considering the above imperfections, yielding more accurate performance assessment of lens–based massive MIMO systems.
Original languageEnglish
Title of host publicationIEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) 2018
Publisher IEEE
Number of pages5
ISBN (Electronic)978-1-5386-3512-4
ISBN (Print)978-1-5386-3513-1
DOIs
Publication statusPublished - 29 Aug 2018
Event19th IEEE INTERNATIONAL WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS - Kalamata, Greece
Duration: 25 Jun 201829 Jun 2018
http://spawc2018.org/

Publication series

NameInternational Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
PublisherIEEE
ISSN (Electronic)1948-3252

Conference

Conference19th IEEE INTERNATIONAL WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS
Abbreviated titleSPAWC 2018
CountryGreece
Period25/06/201829/06/2018
Internet address

Keywords

  • Ergodic sum spectral efficiency
  • Lens arrays
  • Massive MIMO
  • Millimeter Wave
  • RF processing
  • RF switching
  • SINR

Fingerprint Dive into the research topics of 'Impact of RF Processing and Switching Errors in Lens–Based Massive MIMO Systems (Invited Paper)'. Together they form a unique fingerprint.

  • Cite this

    Tataria, H., Matthaiou, M., Smith, P. J., Alexandropoulos, G. C., & Fusco, V. F. (2018). Impact of RF Processing and Switching Errors in Lens–Based Massive MIMO Systems (Invited Paper). In IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) 2018 (International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)). IEEE . https://doi.org/10.1109/SPAWC.2018.8445998