Time-multiplexed / superimposed pilot selection for massive MIMO pilot decontamination

Karthik Upadhya, Sergiy A. Vorobyov, Mikko Vehkaperä

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)

Abstract

In massive multiple-input multiple-output (MIMO) systems, superimposed (SP) and time-multiplexed (TM) pilots exhibit a complementary behavior, with the former and latter schemes offering a higher throughput in high and low inter-cell interference scenarios, respectively. Based on this observation, in this paper, we propose an algorithm for partitioning users into two disjoint sets comprising users that transmit TM and SP pilots. This selection of user sets is accomplished by minimizing the total inter-cell and intra-cell interference, and since this problem is found to be non-convex, a greedy approach is proposed to perform the partitioning. Based on simulations, it is shown that the proposed method is versatile and offers an improved performance in both high and low-interference scenarios.
Original languageEnglish
Title of host publication2017 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2017
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages3459-3463
ISBN (Electronic)978-1-5090-4117-6, 978-1-5090-4116-9
ISBN (Print)978-1-5090-4118-3
DOIs
Publication statusPublished - 16 Jun 2017
MoE publication typeA4 Article in a conference publication
Event2017 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2017 - New Orleans, United States
Duration: 5 Mar 20179 Mar 2017

Publication series

SeriesProceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing
ISSN1520-6149

Conference

Conference2017 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2017
CountryUnited States
CityNew Orleans
Period5/03/179/03/17

Keywords

  • hybrid system
  • Massive MIMO
  • pilot decontamination
  • pilot selection
  • superimposed pilots

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    Upadhya, K., Vorobyov, S. A., & Vehkaperä, M. (2017). Time-multiplexed / superimposed pilot selection for massive MIMO pilot decontamination. In 2017 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2017 (pp. 3459-3463). [7952799] IEEE Institute of Electrical and Electronic Engineers. Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing https://doi.org/10.1109/ICASSP.2017.7952799