Dynamic Channel Emulation in a Cost-Effective MPAC Setup for mmWave Devices Over-The-Air Testing with Dominant Cluster Concept

Xuesong Cai, Wei Fan, Yang Miao, Jinxing Li, Gert Frølund Pedersen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstrakt

Millimeter-Wave (mmWave) has been considered as the key enabler for the fifth generation (5G) communications. The link budget and spectral efficiency of mmWave communications can be further enhanced by adopting the massive multiple-input-multiple-output (MIMO) exploiting beamforming. Nevertheless, it is essential to design and test mmWave 5G devices under various realistic scenarios, since the uncontrollable radio propagation channels pose intrinsic limitations on system performance. This requires emulating the realistic dynamic mmWave channels in a reproducible manner in laboratories, hence the goal of this paper. In this contribution, the beamforming effect is firstly investigated, showing that the non-dominant clusters existing in the mmWave channels are insignificant with beamforming operations applied in mmWave 5G devices. Thus, an over-the-air (OTA) emulation strategy for dynamic mmWave channels is then proposed based on a dominant-cluster concept using a sectored multiprobe anechoic chamber (SMPAC) setup. The key design parameters including the probe number and the angular spacing of probes are investigated through comprehensive simulations. A cost-effective switch circuit is also designed for this purpose and validated in the simulation. Furthermore, a dynamic mmWave channel measured in an indoor scenario at 28-30 GHz is presented, where the proposed emulation strategy is also validated by reproducing the measured reality.
OriginalsprogEngelsk
TidsskriftIEEE Transactions on Wireless Communications
ISSN1536-1276
StatusAfsendt - 2021

Fingeraftryk

Dyk ned i forskningsemnerne om 'Dynamic Channel Emulation in a Cost-Effective MPAC Setup for mmWave Devices Over-The-Air Testing with Dominant Cluster Concept'. Sammen danner de et unikt fingeraftryk.

Citationsformater