Optimizing the mmWave Channel Estimation Duration by Rate Prediction
Journal article, 2021

In millimeter-wave (mmWave) wireless communications, the duration of the channel estimation plays a major role to establish the links before data transmission. However, fixed or long channel estimation can substantially hinder the achievable transmit data rates. In this letter, we propose a new scheme that optimizes the channel estimation duration to establish the link between the base station (BS) and a mobile station (MS) in mmWave communications. Before pilot transmissions, the BS predicts the downlink effective rate that would be achieved after channel estimation with the pilot precoder and compares this predicted rate with the current rate, based on the current channel estimates. The proposed scheme optimizes the mmWave channel estimation duration by ending pilot transmissions when the predicted rate is lower than the current rate.


rate prediction


Channel estimation duration

Radio frequency

Data communication

Electronic mail



Channel estimation


Covariance matrices


Jeongwan Kang

Hanyang University

Nil Garcia

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Henk Wymeersch

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Carlo Fischione

Royal Institute of Technology (KTH)

Gonzalo Seco-Granados

Universitat Autonoma de Barcelona (UAB)

Sunwoo Kim

Hanyang University

IEEE Communications Letters

1089-7798 (ISSN)

Vol. 25 2 555-559

Multidimensional coherent communications with microcombs

Swedish Research Council (VR), 2020-12-01 -- 2026-11-30.

Areas of Advance

Information and Communication Technology

Subject Categories


Communication Systems

Signal Processing



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