Abstract
Millimeter wave (mmWave) channel emulator (CE)
is an essential tool for air interface testing of the upcoming
mmWave communication systems. A flexible CE, which is capable
of frequency setting from sub-6 GHz to mmWave bands and
flexible system bandwidth setting, is highly desirable. This is due
to the fact that potential frequency bands and system bandwidths
are undecided for mmWave systems and it is likely that multibands
with scalable system bandwidths will be supported. In this
paper, a frequency extension scheme based on frequency up-anddown
conversion, and a novel bandwidth enhancement scheme
based on the band-combining principle, are proposed to upgrade
existing sub-6GHz CE to meet the requirements in the mmWave
CE design. The designed mmWave CE is experimentally validated,
where the measured Doppler and delay profiles agree
well with the target ones. Moreover, the beamforming validation
measurements showed that excellent gain and phase control of
the mmWave CE output ports can be realized.
is an essential tool for air interface testing of the upcoming
mmWave communication systems. A flexible CE, which is capable
of frequency setting from sub-6 GHz to mmWave bands and
flexible system bandwidth setting, is highly desirable. This is due
to the fact that potential frequency bands and system bandwidths
are undecided for mmWave systems and it is likely that multibands
with scalable system bandwidths will be supported. In this
paper, a frequency extension scheme based on frequency up-anddown
conversion, and a novel bandwidth enhancement scheme
based on the band-combining principle, are proposed to upgrade
existing sub-6GHz CE to meet the requirements in the mmWave
CE design. The designed mmWave CE is experimentally validated,
where the measured Doppler and delay profiles agree
well with the target ones. Moreover, the beamforming validation
measurements showed that excellent gain and phase control of
the mmWave CE output ports can be realized.
| Original language | English |
|---|---|
| Article number | 8429507 |
| Journal | I E E E Transactions on Antennas and Propagation |
| Volume | 66 |
| Issue number | 11 |
| Pages (from-to) | 6446-6451 |
| Number of pages | 6 |
| ISSN | 0018-926X |
| DOIs | |
| Publication status | Published - Nov 2018 |
Keywords
- Multipath channels
- radio propagation
- testing