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Random-phase beamforming for initial access in millimeter-wave cellular networks

Z. Abu-Shaban ; Henk Wymeersch (Institutionen för signaler och system, Kommunikationssystem) ; X. Zhou ; G. Seco-Granados ; T. Abhayapala
2016 IEEE Global Communications Conference, GLOBECOM 2016 - Proceedings (2334-0983). p. Article no 7842197. (2017)
[Konferensbidrag, refereegranskat]

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.

Denna post skapades 2017-04-27. Senast ändrad 2017-07-14.
CPL Pubid: 248981


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Institutionen för signaler och system, Kommunikationssystem (1900-2017)



Chalmers infrastruktur