Transceiver integrated circuit (IC) subarrays, each transceiver IC subarray comprising at least a first transceiver IC and a second transceiver IC physically arranged in a subarray: the transceiver ICs configured to process series of commonly-processed aggregated signal-port IQ data packets in accordance with (i) beam-tilt information received in control message packets and (ii) the subarray position of the transceiver ICs, using one or more signal processing techniques to achieve electronic beam tilt selected from the group consisting of: (i) applying an incremental phase rotation to each subcarrier frequency-domain IQ data point (via, e.g., and NCO), (ii) applying a constant phase rotation to each subcarrier frequency-domain IQ data point (e.g., via a complex multiplication), (iii) applying a constant phase rotation to each sample of the baseband time domain signal (e.g., via a complex multiplication), and (iv) imposing time delays in the discrete time domain signals of the transmit baseband signals.