A Direct Calibration Algorithm for ADC Interleaving
Fuente:
arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866917105065000960 |
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| author | Chan, Chi-kwan Suzuki, Hina Forbes, David West, Andrew Thomas Roshanineshat, Arash Marrone, Daniel P. Lowitz, Amy |
| author_facet | Chan, Chi-kwan Suzuki, Hina Forbes, David West, Andrew Thomas Roshanineshat, Arash Marrone, Daniel P. Lowitz, Amy |
| contents | We introduce a novel direct calibration algorithm to address phase delay, gain, and offset mismatches in Analog-to-Digital Converter (ADC) time interleaving systems. These mismatches, common in high-speed data acquisition, degrade system performance and signal integrity, particularly in applications such as radio astronomy and very long baseline interferometry (VLBI). Our proposed algorithm uses a sinusoidal reference signal and Fourier analysis to isolate and correct each type of mismatch, providing a computationally efficient solution. Extensive numerical simulations validate the algorithm's effectiveness and demonstrate its ability to significantly enhance signal reconstruction accuracy compared to existing methods. This work provides a robust and scalable solution for maintaining signal fidelity in interleaved ADC systems and has broad applications in fields that require high-speed data acquisition. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_20763 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Direct Calibration Algorithm for ADC Interleaving Chan, Chi-kwan Suzuki, Hina Forbes, David West, Andrew Thomas Roshanineshat, Arash Marrone, Daniel P. Lowitz, Amy Instrumentation and Methods for Astrophysics Signal Processing We introduce a novel direct calibration algorithm to address phase delay, gain, and offset mismatches in Analog-to-Digital Converter (ADC) time interleaving systems. These mismatches, common in high-speed data acquisition, degrade system performance and signal integrity, particularly in applications such as radio astronomy and very long baseline interferometry (VLBI). Our proposed algorithm uses a sinusoidal reference signal and Fourier analysis to isolate and correct each type of mismatch, providing a computationally efficient solution. Extensive numerical simulations validate the algorithm's effectiveness and demonstrate its ability to significantly enhance signal reconstruction accuracy compared to existing methods. This work provides a robust and scalable solution for maintaining signal fidelity in interleaved ADC systems and has broad applications in fields that require high-speed data acquisition. |
| title | A Direct Calibration Algorithm for ADC Interleaving |
| topic | Instrumentation and Methods for Astrophysics Signal Processing |
| url | https://arxiv.org/abs/2511.20763 |