Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2510.03901 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866915533634404352 |
|---|---|
| author | Savaux, Vincent Sawadogo, Steve Rou, Hyeon Seok de Abreu, Giuseppe Thadeu Freitas |
| author_facet | Savaux, Vincent Sawadogo, Steve Rou, Hyeon Seok de Abreu, Giuseppe Thadeu Freitas |
| contents | This paper investigates the robustness of affine frequency division multiplexing (AFDM) and orthogonal time frequency space (OTFS) modulation schemes against non-white Gaussian noise, which can model various sources of additive disturbances to the received signal. The proposed approach demonstrates that the performance of these waveforms depends on the ability of the demodulation matrix to whiten the noise-a property that is, in turn, related to the sparsity of the matrix. AFDM is shown to outperform OTFS and orthogonal frequency division multiplexing (OFDM), as its demodulation matrix is generally less sparse than those of the other waveforms. Based on this analysis, several application examples and use cases are presented, such as the use of AFDM and OTFS in narrowband signals or in coexistence with OFDM signals. Finally, simulation results confirm that AFDM achieves better performance than OTFS and OFDM in the presence of non-white noise, with gains exceeding 1 dB in most application scenarios. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_03901 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On the Noise Robustness of Affine Frequency Division Multiplexing: Analysis and Applications Savaux, Vincent Sawadogo, Steve Rou, Hyeon Seok de Abreu, Giuseppe Thadeu Freitas Signal Processing This paper investigates the robustness of affine frequency division multiplexing (AFDM) and orthogonal time frequency space (OTFS) modulation schemes against non-white Gaussian noise, which can model various sources of additive disturbances to the received signal. The proposed approach demonstrates that the performance of these waveforms depends on the ability of the demodulation matrix to whiten the noise-a property that is, in turn, related to the sparsity of the matrix. AFDM is shown to outperform OTFS and orthogonal frequency division multiplexing (OFDM), as its demodulation matrix is generally less sparse than those of the other waveforms. Based on this analysis, several application examples and use cases are presented, such as the use of AFDM and OTFS in narrowband signals or in coexistence with OFDM signals. Finally, simulation results confirm that AFDM achieves better performance than OTFS and OFDM in the presence of non-white noise, with gains exceeding 1 dB in most application scenarios. |
| title | On the Noise Robustness of Affine Frequency Division Multiplexing: Analysis and Applications |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2510.03901 |