Atomic Network-Based DOA Estimation Using Low-Bit ADC
| Autor: | Peng Chen, Yuxuan Yao, Shuran Sheng, Zhimin Chen, Lenan Wu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Optimization problem
Computational complexity theory Computer Networks and Communications Computer science Low bit Analog-to-digital converter lcsh:TK7800-8360 DOA estimation 02 engineering and technology 01 natural sciences law.invention law 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Direction finding low-bit ADC 010401 analytical chemistry Atomic norm lcsh:Electronics Direction of arrival 020206 networking & telecommunications Function (mathematics) sparse reconstruction 0104 chemical sciences Hardware and Architecture Control and Systems Engineering Signal Processing atomic network Algorithm |
| Zdroj: | Electronics Volume 10 Issue 6 Electronics, Vol 10, Iss 738, p 738 (2021) |
| ISSN: | 2079-9292 |
| DOI: | 10.3390/electronics10060738 |
| Popis: | In the direction of arrival (DOA) estimation problem, when a low-bit analog to digital converter (ADC) is used, the estimation performance severely deteriorates. In this paper, the DOA estimation problem is considered in a low-cost direction finding system with low-bit ADC. To eliminate quantization noise, we propose a novel network ADCnet, which is a composition of fully connected layers and exponential linear unit (ELU) layers, and the input signals are the received signals using low-bit ADC. After the ADCnet, an AtomicNet is also proposed to estimate the DOA from the denoised signals, where atomic vectors are corresponding to the steer vectors. A loss function considering both the reconstruction performance and the sparsity is proposed in the AtomicNet. Different from the exiting atomic norm-based methods, the proposed method can avoid an optimization problem and estimate the DOA with lower computational complexity. Simulation results show that the proposed method outperforms the existing methods in the DOA estimation performance using low-bit ADC. |
| Databáze: | OpenAIRE |
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