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<p>In the realm of 5G and beyond, Intelligent Reflecting Surfaces (IRS) have become a crucial component, facilitating the enhancement of wireless signal propagation and spectral efficiency. Passive IRSs have the inherent drawback of multiplicative fading because of their passive design, even while they offer inexpensive solutions by cleverly managing reflected signals. Signal amplification is incorporated into active IRS to remedy this, allowing for increased signal strength, longer coverage, and better link quality. A performance analysis of active IRS-assisted multi-user multiple input single output (MU-MISO) systems under phase limitations imposed due to hardware restrictions is presented in this paper. The impact of system factors on total sum-rate performance, including transmission distance, number of IRS elements, and power consumption, is the main emphasis of the study. In both weak and strong direct link circumstances, a comparison of the passive IRS, ideal active IRS, and practical active IRS models is conducted. Comparing practical active IRS to benchmark models, simulation findings demonstrate a considerable improvement in system throughput and energy efficiency. These results emphasize the benefits of using active IRS in upcoming wireless communication systems and show how it may be used to solve issues with signal deterioration in crowded and changing environments.</p>

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Performance analysis of active IRS assisted MU-MISO system

  • 期刊论文

  • 发表日期：

    2025年8月14日

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  • Gitartha Gogoi,
  • Tanushree Bose,
  • Pradeep Vishwakarma,
  • Samarendra Nath Sur

摘要

In the realm of 5G and beyond, Intelligent Reflecting Surfaces (IRS) have become a crucial component, facilitating the enhancement of wireless signal propagation and spectral efficiency. Passive IRSs have the inherent drawback of multiplicative fading because of their passive design, even while they offer inexpensive solutions by cleverly managing reflected signals. Signal amplification is incorporated into active IRS to remedy this, allowing for increased signal strength, longer coverage, and better link quality. A performance analysis of active IRS-assisted multi-user multiple input single output (MU-MISO) systems under phase limitations imposed due to hardware restrictions is presented in this paper. The impact of system factors on total sum-rate performance, including transmission distance, number of IRS elements, and power consumption, is the main emphasis of the study. In both weak and strong direct link circumstances, a comparison of the passive IRS, ideal active IRS, and practical active IRS models is conducted. Comparing practical active IRS to benchmark models, simulation findings demonstrate a considerable improvement in system throughput and energy efficiency. These results emphasize the benefits of using active IRS in upcoming wireless communication systems and show how it may be used to solve issues with signal deterioration in crowded and changing environments.