In this letter, we investigate the ergodic capacity of the intelligent reflecting surface (IRS)-assisted communication system with quantization phase errors, which is different from existing works assuming ideal continuous or discrete phases. The ergodic capacity, however, does not admit an exact closed-form expression if not impossible. In order to gain insight into the capacity performance, the impact of phase errors on the capacity degradation is quantified, and the minimum number of the reflectors to achieve a given rate threshold is obtained. Simulation results verify the effectiveness of the IRS-assisted system and the capacity scaling law.

中文翻译：

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具有相位误差的智能反射表面辅助通信系统的遍历容量

在这封信中，我们研究了具有量化相位误差的智能反射面（IRS）辅助通信系统的遍历能力，这与假设理想连续或离散相位的现有工作不同。然而，遍历容量即使不是不可能的，也不允许精确的闭式表达式。为了深入了解容量性能，量化相位误差对容量退化的影响，并获得达到给定速率阈值的最小反射器数量。仿真结果验证了 IRS 辅助系统和容量缩放定律的有效性。