Massive MIMO antenna systems offer capabilities to utilize channel correlations to create beams suitable for user specific transmissions. Most prior research is devoted to user-specific transmission in such systems, where a narrow beam is formed towards a user to improve its reception. Public-channel transmission to multiple users at once by means of broad beams has been understudied.
The ASI technique offers the possibility to achieve a perfectly flat array factor by exploiting the additional degree of freedom coming from the dual-polarization beamforming. The proposed technique is applicable to both uniform linear and rectangular arrays.
Full abstract in IEEEXplore DOI: 10.1109/TVT.2022.3192245
Authors:
Sven O. Petersson, Maksym A. Girnyk
Published in the IEEE Transactions on Vehicular Technology, Volume: 71, Issue: 11, November 2022.
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