GLOBECOM 2023, IEEE Global Communications Conference, 4-8 December 2023, Kuala Lumpur, Malaysia
This paper addresses channel estimation for linear time-varying (LTV) wireless propagation links under the assumption of double sparsity i.e., sparsity in both the delay and the Doppler domains. Affine frequency division multiplexing (AFDM), a recently proposed waveform, is shown to be optimal (in a sense that we make explicit) for this problem. With both mathematical analysis and numerical results, the minimal pilot and guard overhead needed for achieving a target mean squared error (MSE) while performing channel estimation is shown to be the smallest when AFDM is employed instead of both conventional and recently proposed waveforms.
Type:
Conférence
City:
Kuala Lumpur
Date:
2023-12-04
Department:
Systèmes de Communication
Eurecom Ref:
7338
Copyright:
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