Unlimited dynamic range signal recovery for folded graph signals

Ji, Feng; Pratibha, .; Tay, Wee Peng

doi:10.1016/j.sigpro.2022.108574

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“…with ⌈•⌋ denoting the rounding function. Single-channel modulo-ADC has been applied in areas like radar, imaging, and communications to increase dynamic range [12][13][14]. However, single-channel modulo-ADC system requires high sampling rates and computational costs.…”

Section: Introductionmentioning

confidence: 99%

Towards Optimized Multi-Channel Modulo-ADCs: Moduli Selection Strategies and Bit Depth Analysis

Yan,

Gan,

et al. 2024

ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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This paper presents a theoretical analysis of multi-channel modulo analog-to-digital converters (ADCs) for high-dynamic range sampling under bounded noise. In particular, we derive the maximum error tolerance in terms of ADC dynamic range, signal dynamic range, and channel number. Additionally, we present closed-form expressions for ADC thresholds, ensuring near-optimal error resilience, and analyzing the minimal bit-depth needed for stable recovery. Compared to single-channel modulo ADCs, our approach achieves superior error tolerance with reduced sampling rates. Moreover, it demands a minor bit rate increase compared to conventional ADCs but operates with a significantly smaller ADC dynamic range.

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Section: Introductionmentioning

confidence: 99%