QAM constellation division based user grouping transmission for massive MIMO uplink systems

Jingjie Zong, Gangtao Han, Dalong Zhang, Di Zhang, Xiaomin Mu

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

1 Citation (Scopus)

Abstract

In this paper, a novel QAM constellation division based user grouping communication scheme is proposed for the massive MIMO uplink systems. In the proposed scheme, orthogonal pilot sequences are assigned to adjacent cells to eliminate the pilot contamination between adjacent cells, while the users in the same cell are divided into groups and each group uses one pilot sequence. In each group, a QAM constellation is divided into two PAM constellations for the two users to implement uplink transmission. With the help of the pilot sequences, the base station (BS) firstly estimates the sum channel of each group, and then executes signal detection by adopting the matched filter detector based on the estimated sum channel as well as the asymptotic orthogonality between different channels while the number of BS antennas goes to infinity. Furthermore, the effect of the large-scale fading coefficients of the channels on the average symbol error rate (SER) of all the users is investigated, and an explicit and concrete user grouping approach is proposed to decrease the average SER. Finally, computer simulations illustrate that our proposed communication scheme performs well and the proposed user grouping approach is obviously effective.

Original languageEnglish
Title of host publication2019 IEEE/CIC International Conference on Communications in China, ICCC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages818-822
Number of pages5
ISBN (Electronic)9781728107325
DOIs
Publication statusPublished - 2019 Aug
Externally publishedYes
Event2019 IEEE/CIC International Conference on Communications in China, ICCC 2019 - Changchun, China
Duration: 2019 Aug 112019 Aug 13

Publication series

Name2019 IEEE/CIC International Conference on Communications in China, ICCC 2019

Conference

Conference2019 IEEE/CIC International Conference on Communications in China, ICCC 2019
CountryChina
CityChangchun
Period19/8/1119/8/13

Keywords

  • Constellation division
  • Massive MIMO
  • Pilot contamination
  • User grouping

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Networks and Communications
  • Hardware and Architecture
  • Signal Processing
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality

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  • Cite this

    Zong, J., Han, G., Zhang, D., Zhang, D., & Mu, X. (2019). QAM constellation division based user grouping transmission for massive MIMO uplink systems. In 2019 IEEE/CIC International Conference on Communications in China, ICCC 2019 (pp. 818-822). [8855893] (2019 IEEE/CIC International Conference on Communications in China, ICCC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCChina.2019.8855893