Channel Measurement Based Antenna Synthesis for Mobile Automotive Mimo Communication Systems

Mahler, Tobias; Kowalewski, Jerzy; Nub, Benjamin; Richt, Cornelius; Mayer, Jonathan; Zwick, and Thomas

doi:10.2528/pierb16081502

Cited by 9 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The randomly selected training symbols are modulated using quadrature-phase shift keying (QPSK). OFDM facilitates the separation of the different transmit antennas by using exclusive OFDM subcarriers and enables the estimation of the complex MIMO channel matrix with several measurement points in the frequency domain [67]. By separating the transmit antennas in frequency domain, the transmitters can be separated at each receive antenna, realizing an estimation of the instantaneous complex MIMO channel matrix.…”

Section: B Channel Estimation Principle and Signal Processingmentioning

confidence: 99%

MIMO Communication Measurements in Small Cell Scenarios at 28 GHz

Eisenbeis¹,

Tingulstad²,

Kern³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

<p>Massive multiple-input multiple-output (MIMO) systems operating in the centimeter-wave (cmWave) and millimeter-wave (mmWave) region offer huge spectral efficiencies, which enable to satisfy the urgent need for higher data rates in mobile communication networks. However, the proper design of those massive MIMO systems first requires a deep understanding of the underlying wireless propagation channel. Therefore, we present a fully-digital MIMO measurement system operating around 28 GHz. The system enables to take fast subsequent snapshots of the complex MIMO channel matrix. Based on this method we statistically analyze the time-dependent channel behavior, the achievable signal quality and spectral efficiency, as well as the channel eigenvalue profile. Furthermore, the presented calibration approach for the receiver enables an estimation of the dominant absolute angle of arrival (AoA) and allows us to draw conclusions about the line-of-sight (LOS) dominance of the scenario. In total, 159 uplink communication measurements over 20 seconds are conducted in three different small cell site scenarios to investigate the wireless propagation behavior. The measurements reveal the existence of several spatial propagation paths between the mobile transmitter and the base station. Furthermore, an insight into their likelihood in different propagation scenarios is also given.</p>

show abstract

Section: B Channel Estimation Principle and Signal Processingmentioning

confidence: 99%

MIMO Communication Measurements in Small Cell Scenarios at 28 GHz

Eisenbeis¹,

Tingulstad²,

Kern³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…In [8] an antenna synthesis method is proposed to calculate the optimal radiation characteristics for urban scenarios. The improved synthesis procedure is presented in [9]. Furthermore, the real world dynamic channel measurements are used for the synthesis in this case.…”

Section: Single Reconfigurable Antennamentioning

confidence: 99%

A Low-Profile Pattern Reconfigurable Antenna System for Automotive Mimo Applications

Kowalewski¹,

Atuegwu²,

Mayer³

et al. 2018

PIER

Self Cite

View full text Add to dashboard Cite

This paper presents the design and evaluation of a compact antenna system with pattern reconfigurability at 2.6 GHz. The antenna is based on the concept of an electronically steerable parasitic array radiator (ESPAR), and its height is reduced by top loading. The antenna can generate 10 reconfigurable patterns with a maximal gain of 7.4 dBi. Furthermore, a multiple antenna system consisting of these antennas is proposed. The radiation patterns realized by this multiple-input-multipleoutput (MIMO) system are optimized for automotive urban scenarios based on the results of previous research. The S-parameter measurement results of a fabricated prototype correlate with the simulation. Furthermore, 3D measurements of radiation patterns correspond very well with simulation and gain up to 8 dBi is obtained.

show abstract