Key result
A novel mixed ADC architecture optimized via a swap-based method demonstrated superior direction-of-arrival estimation performance compared to existing schemes in numerical examples.
Proposes a novel mixed-ADC architecture that optimizes ADC placement for improved direction-of-arrival estimation.
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May enhance DOA efficiency in mixed-ADC arrays; leaves open hardware validation beyond simulations.
We propose a novel mixed analog-to-digital converter (ADC) architecture for direction-of-arrival (DOA) estimation using a uniform linear array, where the in-phase and quadrature-phase channels can be independently sampled by different ADCs. We derive the Cramér-Rao bound (CRB) and utilize its lower bound to optimize the placement of different ADCs via a swap-based method. Numerical examples are provided to demonstrate the superiority of the optimized placement of different ADCs over existing schemes.
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Zhang et al. (2024) studied this question. Mixed analog-to-digital converter (ADC) architecture vs. Existing schemes was evaluated on Direction-of-arrival (DOA) estimation performance. A novel mixed ADC architecture optimized via a swap-based method demonstrated superior direction-of-arrival estimation performance compared to existing schemes in numerical examples.
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