Beamforming mmWave MIMO: Impact of Nonideal Hardware and Channel State Information

In this paper, we analyzed the impact of residual hardware impairments on the performance of different beamforming millimeter wave (mmWave) Multiple-Input Multiple-Output (MIMO) architectures. By modeling the residual impairments as a additional distortion noise, expression for the capacity for both hybrid beamforming and analog RF beamforming mmWave MIMO is obtained. For the analog RF beamforming, an analytical upper bound is derived. Additionally, the effect of nonideal channel state information is investigated. Performance of the beamforming mmWave MIMO are assessed through Monte Carlo simulations. Results confirm that hardware impairments are limiting the systems performance.

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