Search Results for author: Gonzalo Seco-Granados

Found 9 papers, 2 papers with code

Optimal Spatial Signal Design for mmWave Positioning under Imperfect Synchronization

no code implementations17 May 2021 Musa Furkan Keskin, Fan Jiang, Florent Munier, Gonzalo Seco-Granados, Henk Wymeersch

We consider the problem of spatial signal design for multipath-assisted mmWave positioning under limited prior knowledge on the user's location and clock bias.

Robust Design

Semi-Passive 3D Positioning of Multiple RIS-Enabled Users

no code implementations25 Apr 2021 Kamran Keykhosravi, Musa Furkan Keskin, Satyam Dwivedi, Gonzalo Seco-Granados, Henk Wymeersch

In this work, we study the application of RIS in a multi-user passive localization scenario, where we have one transmitter (Tx) and multiple asynchronous receivers (Rxs) with known locations.

3D Orientation Estimation with Multiple 5G mmWave Base Stations

no code implementations5 Jan 2021 Mohammad A. Nazari, Gonzalo Seco-Granados, Pontus Johannisson, Henk Wymeersch

We show that the received signals from several base stations, having known positions, can be used to estimate the unknown orientation of the user.

SISO RIS-Enabled Joint 3D Downlink Localization and Synchronization

1 code implementation4 Nov 2020 Kamran Keykhosravi, Musa Furkan Keskin, Gonzalo Seco-Granados, Henk Wymeersch

We consider the problem of joint three-dimensional localization and synchronization for a single-input single-output (SISO) system in the presence of a reconfigurable intelligent surface (RIS), equipped with a uniform planar array.

Signal Processing Information Theory Information Theory

RIS-aided Joint Localization and Synchronization with a Single-Antenna MmWave Receiver

no code implementations28 Oct 2020 Alessio Fascista, Angelo Coluccia, Henk Wymeersch, Gonzalo Seco-Granados

However, for MISO systems synchronization cannot be performed jointly with user localization unless two-way transmissions are used.

Near-field Localization with a Reconfigurable Intelligent Surface Acting as Lens

1 code implementation12 Oct 2020 Zohair Abu-Shaban, Kamran Keykhosravi, Musa Furkan Keskin, George C. Alexandropoulos, Gonzalo Seco-Granados, Henk Wymeersch

Exploiting wavefront curvature enables localization with limited infrastructure and hardware complexity.

Signal Processing Information Theory Information Theory

Downlink Single-Snapshot Localization and Mapping with a Single-Antenna Receiver

no code implementations29 Jul 2020 Alessio Fascista, Angelo Coluccia, Henk Wymeersch, Gonzalo Seco-Granados

5G mmWave MIMO systems enable accurate estimation of the user position and mapping of the radio environment using a single snapshot when both the base station (BS) and user are equipped with large antenna arrays.

Massive MIMO Channel Estimation with Low-Resolution Spatial Sigma-Delta ADCs

no code implementations15 May 2020 Shilpa Rao, Gonzalo Seco-Granados, Hessam Pirzadeh, Josef A. Nossek, A. Lee Swindlehurst

We consider channel estimation for an uplink massive multiple-input multiple-output (MIMO) system where the base station (BS) uses an array with low-resolution (1-2 bit) analog-to-digital converters and a spatial Sigma-Delta ($\Sigma\Delta$) architecture to shape the quantization noise away from users in some angular sector.

Quantization

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