Post date: Jan 21, 2021 4:29:59 PM
My graduate student Safi Shams Muhtasimul and I received the Best Paper Award for the paper titled "Index-Modulated Circularly-Shifted Chirps for Dual-Function Radar & Communication Systems" at IEEE Consumer Communications and Networking Conference (CCNC) 2021 for Wireless Communications - Fundamentals and PHY.
https://ccnc2021.ieee-ccnc.org/program/awards
The main motivation of this study is that the convergence of communication and radar functionalities under one wireless system. This convergence causes a new trade-off between communications and radar as the resources may need to be shared between two applications. One way to circumvent this issue is to exploit communication signals for radar applications. However, the communication signals can deteriorate the accuracy of the estimation algorithms since their time and frequency characteristics are functions of the information bits. In this study, we address this fundamental problem and propose a new modulation scheme that exploits index modulation and circularly-shifted chirp signals to obtain a low-complexity framework based on discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) with a specific frequency-domain spectral shaping (FDSS) that benefits both radar and communication receivers [1]. DFT-s-OFDM is one of the major waveforms that has been used in the 3GPP 4G LTE and 5G NR. By using this new scheme, we showed that a sub-millimeter accuracy is achievable at 60 GHz while maintaining reliable communications [2][3].
[1] S. Hoque, C-Y. Chen, A. Şahin, "A Wideband Index Modulation with Circularly-Shifted Chirps," in Proc. IEEE Consumer Communications & Networking Conference (CCNC), Las Vegas, Jan. 2021 (Best Paper Award).
[2] S. Hoque, A. Şahin, "Index-Modulated Circularly-Shifted Chirps for Dual-Function Radar & Communication Systems," IEEE Global Communications Conference Workshops on Integrated Sensing and Communication (GLOBECOM WRKPS), Taiwan, Dec. 2020.
[3] A. Şahin, N. Hosseini, H. Jamal, S. S. M. Hoque, and D. W. Matolak, "DFT-spread-OFDM Based Chirp Transmission," IEEE Communications Letters, Nov. 2020.