Efficient Beam Search for Initial Access Using Collaborative Filtering. (arXiv:2209.06669v1 [eess.SY])

Beamforming-capable antenna arrays overcome the high free-space path loss at
higher carrier frequencies. However, the beams must be properly aligned to
ensure that the highest power is radiated towards (and received by) the user
equipment (UE). While there are methods that improve upon an exhaustive search
for optimal beams by some form of hierarchical search, they can be prone to
return only locally optimal solutions with small beam gains. Other approaches
address this problem by exploiting contextual information, e.g., the …

arxiv collaborative collaborative filtering filtering search