Scholarlink

<p>This study demonstrates that intelligent reflecting surfaces (IRSs) can complement multiple-input multiple-output (MIMO) systems by reducing the number of vehicle antennas required to achieve the same spectral efficiency (SE) in realistic high-speed downlink communication systems. Building on previous analyses of SE with multiple IRSs in a single-input single-output (SISO) setup, which incorporated hardware impairments (HWIs) in line-of-sight (LOS) and Rician fading channels, this work considers selected Rician factor parameters. Further, it investigates the impact of varying Rician factors with distance, drawn from scenario-based simulations, providing a more realistic approach. The analysis is extended to MIMO configurations, exploring how IRSs can complement MIMO by varying the number of IRSs and MIMO configurations to reduce the number of vehicle antennas while maintaining comparable SE performance.</p>

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IRS-assisted MIMO for high-speed communications in distance-dependent Rician fading channels

  • 期刊论文

  • 发表日期：

    2026年5月28日

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  • Shahnaz Fatima,
  • Shri Ramtej Kondamuri

摘要

This study demonstrates that intelligent reflecting surfaces (IRSs) can complement multiple-input multiple-output (MIMO) systems by reducing the number of vehicle antennas required to achieve the same spectral efficiency (SE) in realistic high-speed downlink communication systems. Building on previous analyses of SE with multiple IRSs in a single-input single-output (SISO) setup, which incorporated hardware impairments (HWIs) in line-of-sight (LOS) and Rician fading channels, this work considers selected Rician factor parameters. Further, it investigates the impact of varying Rician factors with distance, drawn from scenario-based simulations, providing a more realistic approach. The analysis is extended to MIMO configurations, exploring how IRSs can complement MIMO by varying the number of IRSs and MIMO configurations to reduce the number of vehicle antennas while maintaining comparable SE performance.