Work

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

Year: 2025

Type: article

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

Source: IEEE Journal on Selected Areas in Communications

DOI: 10.1109/jsac.2025.3607854

Authors: Yifeng Xiong, Junsheng Mu, Shuangyang Li, Marco Lops, Jianhua Zhang

Institutions: Beijing University of Posts and Telecommunications, Technische Universität Berlin, University of Naples Federico II, State Key Laboratory of Networking and Switching Technology

Language: English

Topic: Radar Systems and Signal Processing

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: green

Funder: National Natural Science Foundation of China