Analysis of a Low Cost and Low Complexity Adaptive Transmission Scheme for Massive MIMO Systems with Interference

Amin Radbord, Mohammed Abdel Hafez, Mohammadreza Amini

Research output: Contribution to journalArticlepeer-review


This paper evaluates a low-complexity Multiuser Adaptive Modulation (MAM) scheme for an uplink massive multiple-input and multiple-output (MIMO) systems with maximum-ratio combining (MRC) linear receivers, which requires only slow-varying large-scale shadowing information for the users. For a channel that includes both small-scale and large-scale fading, the probability density function of signal-to-interference-plus-noise ratio (SINR) is mathematically analyzed and verified by simulation. Furthermore, closed-form expressions are derived for the average spectral efficiency and bit error outage. Since the MRC is desirable in low transmit power, the obtained analytical expressions are approximated at low power levels. Moreover, the paper investigates different users’ arrangements around the base station to achieve the maximum possible bit rate. For MAM with joint power control, optimal power adaptation strategy switching thresholds are also acquired. Compared to the existing research literature, the proposed adaptive scheme by the MRC receiver gives similar performance as a proper adaptive method at low power transmission.

Original languageEnglish
Pages (from-to)3569-3593
Number of pages25
JournalWireless Personal Communications
Issue number4
Publication statusPublished - Oct 2022


  • Adaptive modulation
  • Large-scale fading
  • Massive MIMO
  • Maximum-ratio combining
  • Power control

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering


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