5G downlink multi-beam signal design for LOS positioning
Paper i proceeding, 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

Technische Universität München

Huawei Technologies Deutschland GmbH

G. Seco-Granados

Universitat Autonoma de Barcelona (UAB)

Henk Wymeersch

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Mario H.Castaneda Garcia

Huawei Technologies Deutschland GmbH

Richard A. Stirling-Gallacher

Huawei Technologies Deutschland GmbH

Josef A. Nossek

Technische Universität München

Universidade Federal do Ceara

2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings


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







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