Fan, Wei3; Nielsen, Jesper Ødum2; Pedersen, Gert Frølund2
1 Department of Electronic Systems, The Faculty of Engineering and Science, Aalborg University, VBN2 Antennas, propagation and radio networking, The Faculty of Engineering and Science, Aalborg University, VBN3 The Faculty of Engineering and Science, Aalborg University, VBN
The letter discusses over-the-air (OTA) testing for multiple-input–multiple-output (MIMO) capable terminals with emphasis on estimating discrete power angular spectrum modeled at the receiver (Rx) side in the test zone. Two techniques based on a uniform circular array (UCA) are proposed to obtain accurate direction-of-arrival estimates as well as power estimates of the impinging signals in the test zone. Simulation results match well with the target, as expected. Measurement results based on a virtual UCA in a practical 3-D multiprobe setup further support the simulation results. Possible reasons for the deviations between simulations and measurements are also investigated.
I E E E Antennas and Wireless Propagation Letters, 2014, Vol 13, p. 349-352