Index Modulation for Integrated Sensing and Communications: A Signal Processing Perspective
CoRR(2024)
摘要
A joint design of both sensing and communication can lead to substantial
enhancement for both subsystems in terms of size, cost as well as spectrum and
hardware efficiency. In the last decade, integrated sensing and communications
(ISAC) has emerged as a means to efficiently utilize the spectrum on a single
and shared hardware platform. Recent studies focused on developing
multi-function approaches to share the spectrum between radar sensing and
communications. Index modulation (IM) is one particular approach to incorporate
information-bearing communication symbols into the emitted radar waveforms.
While IM has been well investigated in communications-only systems, the
implementation adoption of IM concept in ISAC has recently attracted
researchers to achieve improved energy/spectral efficiency while maintaining
satisfactory radar sensing performance. This article focuses on recent studies
on IM-ISAC, and presents in detail the analytical background and relevance of
the major IM-ISAC applications.
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