1 January 2017

Autonomous driving in 5G: Mitigating interference in OFDM-based vehicular communications

Vlachos, E., Lalos, A. S., Berberidis, K., Tselios, C.
2017 IEEE 22nd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)
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Abstract

Automotive industry will be greatly benefited by the advent of 5G Networking and the huge boost in performance and coverage it will support. Road safety and traffic efficiency services will be significantly upgraded through seamlessly interconnected devices, while latency decrease will most likely allow autonomous driving to become a commodity, available to everyone. This technology will have a huge societal and economical impact, since it will render severe traffic accidents, long commute times and increased energy consumption obsolete. Current vehicular communication systems are usually equipped with orthogonal frequency division multiplexing (OFDM) transceivers that op- erate in suboptimal modes for the upcoming 5G standards. The problem originates in the existing intercarrier interference (ICI) on the receiver end, often partially tackled by integrated successive interference cancellation (OSIC) architectures. How- ever, for decreasing complexity, system designers attempt to mitigate ICI by considering only a small number or sub-carriers, leading to error floor

Type 1
Publication 2017 IEEE 22nd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)
DOI 10.1109/camad.2017.8031619
Date January 2017
Research 6G UAVs

Key Contributions

  • Development of an OSIC-based interference cancellation solution for OFDM systems in vehicular environments.
  • Introduction of a CG-based mechanism for efficient equalizer filter estimation, accelerating algorithm convergence.
  • Demonstration of superior performance compared to existing non-banded ICI cancellation methods, achieving lower BER with reduced complexity.

Results & Insights

Bit Error Rate (BER) performance comparison of the proposed OSIC-based equalizer with existing methods for 4QAM modulation in doubly selective channels.
Bit Error Rate (BER) performance comparison of the proposed OSIC-based equalizer with existing methods for 4QAM modulation in doubly selective channels.
The results show that the proposed solution achieves significantly lower BER across various signal-to-noise ratio (SNR) conditions compared to existing non-banded ICI cancellation methods, validating its effectiveness in improving communication reliability for V2X systems.

Research 6G UAVs