Hooke Jeeves search method for initial beam access in 5G mmWave cellular networks

Millimeter wave channels suffer from large path losses, penetration losses and atmospheric attenuation. Although beamforming techniques can significantly enhance link margins here, they also introduce initial beam access problems at the base and mobile stations prior to data transmission. Hence this paper presents an effective access scheme inspired by the Hooke Jeeves direct pattern search for analog beamforming cascaded codebooks. Simulation results show that the proposed algorithm delivers substantial performance improvements versus existing solutions in terms of computational complexity, access times and power and energy consumption.