P. Kyösti, "Correlation of Hybrid Beamforming Arrays in the Context of OTA Testing," in IEEE Antennas and Wireless Propagation Letters, vol. 19, no. 4, pp. 671-675, April 2020. https://doi.org/10.1109/LAWP.2020.2976515
Correlation of hybrid beamforming arrays in the context of OTA testing
1Centre for Wireless Communications, University of Oulu, Finland
2Keysight Technologies Finland Oy
|Online Access:||PDF Full Text (PDF, 0.6 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe202003259264
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2020-03-25
Hybrid beamforming antenna arrays are a prominent component in communications at mm-wave frequencies. Multiple analogue beamforming arrays will be used for spatial multiplexing of signals also in hand held devices. In this work we derive the correlation coefficient for signals received by two ideal arrays in simple power angular distribution schemes. The purpose is to develop tools for evaluating over-the-air setups for testing of hybrid beamforming devices. We show a few exemplary correlation error evaluations that compare near field multi-probe OTA setups with a perfect target channel model. Results indicate that the correlation error increases with decreasing range length and channel angular spread. Moreover, larger inter-array spacing and sub-array sizes increase the correlation error.
IEEE antennas and wireless propagation letters
|Pages:||671 - 675|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This work has been partly done in 6G Flagship programme funded by Academy of Finland (grant no. 318927).
|Academy of Finland Grant Number:||
318927 (Academy of Finland Funding decision)
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