A Simple Method for Robust Vehicular Communication with Multiple Nonideal Antennas
Paper i proceeding, 2018

For critical vehicular communication services, such as traffic safety and traffic efficiency, it is advisable to design systems with robustness as the main criteria, possibly at the price of reduced peak performance and efficiency. We describe a simple, low-cost method for combining the output of L nonideal (i.e., nonisotropic) antennas to the input signal to a single-port receiver with the aim to guarantee robustness, i.e., to minimize the probability that K consecutive packets arriving from the worst-case angle-of-arrival are decoded incorrectly. To minimize complexity, the combining network does not estimate or use channel state information (complex channel gains, noise levels, etc.). The combining network consists of L-1 analog phase shifters whose phases are affine functions of time. For a general L and the case when the packet error probability decays exponentially with the received SNR, the optimum slopes of the affine functions can be computed by solving an optimization problem that depends on the antenna far field functions. We provide an analytical solution for the special case of = 2 antennas, which turns out to be independent of the antenna patterns. In an experimental setup consisting of two monopole antennas mounted on the roof of a Volvo XC90, the proposed combining method is shown to give significant performance gains compared to using just one of the antennas.

analog combining network

nonisotropic antennas

Robustness

burst error probability

vehicular communications

Författare

Keerthi Nagalapur

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Erik Ström

Chalmers, Elektroteknik, Kommunikations- och antennsystem

Fredrik Brännström

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Jan Carlsson

Provinn AB

Kristian Karlsson

RISE Research Institutes of Sweden

2018 International Conference on Microwaves for Intelligent Mobility (ICMIM2018)
München, Germany,

Styrkeområden

Informations- och kommunikationsteknik

Transport

Drivkrafter

Hållbar utveckling

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

DOI

10.1109/ICMIM.2018.8443547

ISBN

9781538617250

Mer information

Senast uppdaterat

2018-12-20