The June 2026 issue of IEEE Microwave and Wireless Technology Letters (vol. 36, no. 6) carries two papers from the group: an assumption-free method for actively calibrating millimetre-wave phased arrays, and a low-complexity linearization architecture for fully digital massive MIMO transmitters.
The first estimates the element excitations of a millimetre-wave phased array directly from far-field measurements, so the calibration does not depend on a model of the array or on assumptions about its errors. The second proposes a two-tier linearization architecture for fully digital massive MIMO transmitters, arranged so that the per-branch computational cost stays low as the number of transmit chains grows.
The two papers
- M. A. Chalaki, A. B. Ayed, P. Mitran and S. Boumaiza, “Assumption-Free Active Calibration of mm-Wave Phased Arrays Using Excitation Estimation via Far-Field Measurements,” IEEE Microwave and Wireless Technology Letters, vol. 36, no. 6, June 2026.
- J. G. Lim, A. B. Ayed and S. Boumaiza, “A Two-Tier Low-Complexity Linearization Architecture for Fully Digital mMIMO Transmitters,” IEEE Microwave and Wireless Technology Letters, vol. 36, no. 6, June 2026.
Both are listed under 2026 on the Publications page.