Masked Modulation: High-Throughput Half-Duplex ISAC Transmission Waveform Design

• DOI: 10.48550/arxiv.2502.08996
• Publication Date: 2025-02-13
• Authors: Yifeng Xiong; Junsheng Mu; Yonghui Li; Marco Lops; Jianhua Zhang
• Keywords: Duplex (building); Modulation (music)

Integrated sensing and communication (ISAC) enables numerous innovative wireless applications. Communication-centric design is a practical choice for the construction of sixth generation (6G) ISAC networks. Continuous-wave-based systems, with orthogonal frequency-division multiplexing (OFDM) being representative example, suffer from self-interference (SI) problem, hence are less suitable long-range sensing. On other hand, pulse-based half-duplex systems free SI, but also favourable high-throughput scenarios. In this treatise, we propose MASked Modulation (MASM), waveform scheme, which minimises range blindness metric, referred to as "range glint", given duty cycle (proportional throughput) constraint. particular, MASM capable supporting (~50% cycle) under mild glint. Moreover, can be flexibly adapted frame-level designs by operating on slow-time scale. terms optimal transmit mask design, set masks shown ideal in sense sidelobe level glint intensity.