Unified AFDM waveform design framework enables ambiguity function shaping via weighted ISL minimization, PAPR control, or joint operation using reserved chirp subcarriers and a JIPD-MM solver.
Multi-functional chirp signalling for next-generation multi-carrier wireless networks: Communications, sensing and ISAC perspectives
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AFDM is made equivalent to FMCW radar through parameter choice, yielding a DD-DAFT input-output model and two pilot-free matched-filter sensing algorithms that trade sensing accuracy against communication overhead and complexity.
DAFT-s-AFDM with probabilistic constellation shaping achieves a superior controllable tradeoff between communication and sensing ambiguity function performance in ISAC systems.
Introduces low-complexity MMSE and MRC-TD detectors for ZP-AFDM exploiting lower-triangular channel structure, with theoretical BER analysis and simulations showing equivalent performance to full MMSE at reduced cost.
citing papers explorer
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A Unified Framework for Ambiguity Function Shaping and PAPR Control in AFDM Systems
Unified AFDM waveform design framework enables ambiguity function shaping via weighted ISL minimization, PAPR control, or joint operation using reserved chirp subcarriers and a JIPD-MM solver.
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ISAC with Affine Frequency Division Multiplexing: An FMCW-Based Signal Processing Perspective
AFDM is made equivalent to FMCW radar through parameter choice, yielding a DD-DAFT input-output model and two pilot-free matched-filter sensing algorithms that trade sensing accuracy against communication overhead and complexity.
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DAFT-s-AFDM Enabled ISAC Systems: Ambiguity Function Analysis and Waveform Design
DAFT-s-AFDM with probabilistic constellation shaping achieves a superior controllable tradeoff between communication and sensing ambiguity function performance in ISAC systems.
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Error Rate Analysis and Low-Complexity Receiver Design for Zero-Padded AFDM
Introduces low-complexity MMSE and MRC-TD detectors for ZP-AFDM exploiting lower-triangular channel structure, with theoretical BER analysis and simulations showing equivalent performance to full MMSE at reduced cost.