5G downlink multi-beam signal design for LOS positioning
Paper in proceedings, 2019

In this work, we study optimal transmit strategies for minimizing the positioning error bound in a line-of-sight scenario, under different levels of prior knowledge of the channel parameters. For the case of perfect prior knowledge, we prove that two beams are optimal, and determine their beam directions and optimal power allocation. For the imperfect prior knowledge case, we compute the optimal power allocation among the beams of a codebook for two different robustness-related objectives, namely average or maximum squared position error bound minimization. Our numerical results show that our low-complexity approach can outperform existing methods that entail higher signaling and computational overhead.


Anastasios Kakkavas

Technical University of Munich

Huawei Technologies Deutschland GmbH

G. Seco-Granados

Universitat Autonoma de Barcelona (UAB)

Henk Wymeersch

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

Mario H.Castaneda Garcia

Huawei Technologies Deutschland GmbH

Richard A. Stirling-Gallacher

Huawei Technologies Deutschland GmbH

Josef A. Nossek

Technical University of Munich

Universidade Federal do Ceara

2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings


2019 IEEE Global Communications Conference, GLOBECOM 2019
Waikoloa, USA,

Subject Categories


Control Engineering

Signal Processing



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