Low-Complexity Receiver Design for Multicarrier CAPA-based Systems in Doubly-Dispersive Channels
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866918150696599552 |
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| author | Ranasinghe, Kuranage Roche Rayan de Abreu, Giuseppe Thadeu Freitas Björnson, Emil |
| author_facet | Ranasinghe, Kuranage Roche Rayan de Abreu, Giuseppe Thadeu Freitas Björnson, Emil |
| contents | We propose a novel low-complexity receiver design for multicarrier continuous aperture array (CAPA) systems operating over doubly-dispersive (DD) channels. The receiver leverages a Gaussian Belief Propagation (GaBP)-based framework that hinges only on element-wise scalar operations for the detection of the transmitted symbols. Simulation results for the orthogonal frequency division multiplexing (OFDM), orthogonal time frequency space (OTFS), and affine frequency division multiplexing (AFDM) waveforms demonstrate significant performance improvements in terms of uncoded bit error rate (BER) compared to conventional discrete antenna array systems, while maintaining very low computational complexity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_24941 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Low-Complexity Receiver Design for Multicarrier CAPA-based Systems in Doubly-Dispersive Channels Ranasinghe, Kuranage Roche Rayan de Abreu, Giuseppe Thadeu Freitas Björnson, Emil Signal Processing We propose a novel low-complexity receiver design for multicarrier continuous aperture array (CAPA) systems operating over doubly-dispersive (DD) channels. The receiver leverages a Gaussian Belief Propagation (GaBP)-based framework that hinges only on element-wise scalar operations for the detection of the transmitted symbols. Simulation results for the orthogonal frequency division multiplexing (OFDM), orthogonal time frequency space (OTFS), and affine frequency division multiplexing (AFDM) waveforms demonstrate significant performance improvements in terms of uncoded bit error rate (BER) compared to conventional discrete antenna array systems, while maintaining very low computational complexity. |
| title | Low-Complexity Receiver Design for Multicarrier CAPA-based Systems in Doubly-Dispersive Channels |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2509.24941 |