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OFDM-Based In-Band Full-Duplex ISAC Systems
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- Authors
- Woncheol Cho, Kapseok Chang, Wooram Shin, Yongsun Kim, Young-Jo Ko
- Issue Date
- 2025-02
- Citation
- IEEE Wireless Communications Letters, v.14, no.2, pp.365-369
- ISSN
- 2162-2337
- Publisher
- IEEE Communications Society
- Language
- English
- Type
- Journal Article
- Abstract
- In this letter, an in-band full-duplex integrated sensing and communications (ISAC) system based on orthogonal frequency division multiplexing (OFDM) modulation is proposed. We introduce a chirp-scrambled OFDM that enables simultaneous super-resolution distance estimation and communication. A monostatic ISAC node employs a super-resolution distance estimate scheme that utilizes the chirp property of the echo signal, achieving cm-level estimation in practical band-limited communication settings. A communication node demodulates information symbols from the receive chirp-scrambled OFDM signal with no loss of communication performance compared to the conventional OFDM without chirp scrambling.
- KSP Keywords
- Communication node, Communication performance, Distance estimate, Echo signal, In-band full-duplex(IBFD), Integrated sensing, Limited communication, OFDM signals, Orthogonal Frequency-Division Multiplexing(OFDM), Super resolution, band-limited