Robust Multi-Cell Precoding Over Load-Controlled Beams With Single-Fed Antenna Arrays

• Mobile data traffic volume keeps growing.
• Available radio spectrum is limited.
• Coordinated MIMO (Co-MIMO) increases the system-level spectral efficiency (SE).
• Performance can be further increased by more antennas per cooperating node (e.g. RRH).
• However, cost and power constraints limit the number of elements on conventional arrays.
(E.g. each antenna is typically fed by its own radio frequency (RF) module.)
• Load-controlled parasitic antenna arrays (LC-PAA) offer an attractive alternative!