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Performance Impact of Channel Aging and Phase Noise on Intelligent Reflecting Surface
  • Wei Jiang ,
  • Hans Dieter Schotten
Wei Jiang

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Hans Dieter Schotten
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This paper aims to clarify the impact of channel aging and phase noise on the performance of intelligent reflecting surface-aided wireless systems. We first model mathematically the outdated channel state information (CSI) due to Doppler shifts and phase noise stemming from hardware impairment. Then, a closed-form expression of achievable spectral efficiency under noisy and aged CSI is theoretically derived. Some typical simulation results to numerically demonstrate the performance impact are illustrated.
Jan 2023Published in IEEE Communications Letters volume 27 issue 1 on pages 347-351. 10.1109/LCOMM.2022.3214124