Random-phase beamforming for initial access in millimeter-wave cellular networks
Paper in proceedings, 2017

The utilization of the millimeter-wave frequency band (mm-wave) in the fifth generation ({5G}) of mobile communication is a highly-debated current topic. Mm-wave MIMO systems will use arrays with large number of antennas at the transmitter and the receiver, implemented on a relatively small area. With the inherent high directivity of these arrays, algorithms to help the user equipment find the base station and establish a communication link should be carefully designed. Towards that, we examine two beamforming schemes, namely, random-phase beamforming (RPBF) and directional beamforming (DBF), and test their impact on the Cram\'er-Rao lower bounds (CRB) of jointly estimating the direction-of-arrival, direction-of-departure, time-of-arrival, and the complex channel gain, under the line-of-sight channel model. The results show that the application of RPBF is more appropriate in the considered scenario as it attains a lower CRB with fewer beams compared to DBF.


Z. Abu-Shaban

Australian National University

Henk Wymeersch

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

X. Zhou

Australian National University

G. Seco-Granados

Universitat Autonoma de Barcelona (UAB)

T. Abhayapala

Australian National University

2016 IEEE Global Communications Conference, GLOBECOM 2016 - Proceedings

2334-0983 (ISSN)

Article no 7842197-

Subject Categories

Computer Systems