Parametrizations of a 77 GHz OFDM joint radar communication | Zendy

K. B. Serge Angelo Dapa | Zendy; Fouzia Elbahhar | Zendy; Guillaume Point | Zendy; Saleh Bensator | Zendy

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Parametrizations of a 77 GHz OFDM joint radar communication

Author(s) -

K. B. Serge Angelo Dapa,

Fouzia Elbahhar,

Guillaume Point,

Saleh Bensator

Publication year - 2025

Publication title -

ieee access

Language(s) - English

Resource type - Magazines

SCImago Journal Rank - 0.587

H-Index - 127

eISSN - 2169-3536

DOI - 10.1109/access.2025.3596870

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

The parametrization of Orthogonal Frequency-Division Multiplexing (OFDM) radar is fundamental when designing a Joint Radar and Communication (JRC) system. Parameters of the OFDM frame influence simultaneously the communication and detection performance. While the radar component will require an accurate range and speed estimation, the communication sub-system needs to transmit a robust signal over the transmission channel. A careful optimization of these parameters in the 77 GHz frequency band will make possible the design of a communicating radar (Radcom) that is suitable for automotive applications. In this article, we propose two configurations for OFDM radar and present their effects on both radar and communication performance. The first configuration is designed to yield range and Doppler coverage and resolution as close as possible to those of a typical automotive Frequency-Modulated Continuous Wave (FMCW) corner radar, yielding a subcarrier spacing (SCS) greater than 1 MHz. The second configuration makes use of a 480 kHz subcarrier spacing, which is compatible with current communication standards, while respecting the speed and distance resolution. The simulations show that the second configuration offers advantages in terms of radar detection and communication data rate, compared to the first configuration and FMCW radar. On the other hand, the first configuration offers the best communication performance in terms of Bit Error Rate (BER) against Doppler shift and in a noisy environment. Measurement results confirm the good radar performance of OFDM configuration 2 compared with FMCW radar and OFDM in configuration 1 in terms of Signal-to-Noise Ratio (SNR). Therefore, it can be concluded that in configuration 2, the OFDM waveform-based Radcom system is capable of achieving higher radar performance than current automotive radar, while simultaneously enabling fast and reliable V2X communication.

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