Low-Complexity Downlink Channel Estimation in mmWave Multiple-Input Single-Output Systems
Alessio Fascista, Alessandro Monte, Angelo Coluccia, Henk Wymeersch, Gonzalo Seco‐Granados
Abstract
This letter tackles the problem of channel estimation in mmWave multiple-input single-output systems, where users are equipped with single-antenna receivers. By leveraging broadcast transmissions in the downlink channel, two novel low-complexity estimation approaches are devised, able to operate even in presence of a reduced number of transmit antennas or limited bandwidth. Numerical results show that the proposed algorithms provide accurate estimates of the channel parameters, achieving at the same time about 50% complexity reduction compared to existing approaches.
Topics & Concepts
Telecommunications linkComputer scienceChannel (broadcasting)Bandwidth (computing)Reduction (mathematics)Computational complexity theoryElectronic engineeringComputer networkAlgorithmMathematicsEngineeringGeometryMillimeter-Wave Propagation and ModelingAdvanced MIMO Systems OptimizationPower Line Communications and Noise