AFDM radar has an exact closed-form Fisher information matrix due to likelihood cancellation from the chirp-periodic prefix, proving less delay-Doppler coupling than OFDM with quadratic delay CRB improvement as chirp rate increases.
AFDM-enabled integrated sensing and communication: Theoretical framework and pilot design,
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Proposes AFDM-ISAC waveform with chirp subcarrier frame structure, analog chirp-compression receiver, and GCE-BEM-based channel estimation for integrated sensing and communications.
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A Cancellation Mechanism in AFDM Radar Sensing: Exact Fisher Information and Delay-Doppler Decoupling
AFDM radar has an exact closed-form Fisher information matrix due to likelihood cancellation from the chirp-periodic prefix, proving less delay-Doppler coupling than OFDM with quadratic delay CRB improvement as chirp rate increases.
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Frame-Based AFDM-ISAC Waveform Design With Chirp-Enabled Pulse Compression
Proposes AFDM-ISAC waveform with chirp subcarrier frame structure, analog chirp-compression receiver, and GCE-BEM-based channel estimation for integrated sensing and communications.