A method for using sub-Nyquist sampling for ultra low-power positioning systems
Yazarlar (3)
| Bildiri Türü |
Tebliğ/Bildiri
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Bildiri Dili | |
| Bildiri Alt Türü | Tam Metin Olarak Yayınlanan Tebliğ (Uluslararası Kongre/Sempozyum) | ||
| Bildiri Niteliği | Alanında Hakemli Uluslararası Kongre/Sempozyum | ||
| Kongre Adı | SiPS 2013 Proceedings | ||
| Kongre Tarihi | / | ||
| Basıldığı Ülke | Basıldığı Şehir | ||
| Bildiri Linki | https://ieeexplore.ieee.org/abstract/document/6674488/ | ||
| UAK Araştırma Alanları |
Halı-Kilim ve Dokuma
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| Özet |
| This paper proposes an improved Time-of-Flight (ToF) estimation algorithm that allows sub-mm position estimation and reduces the power consumption of the receiver. The former is ensured by employing a multicarrier ultra-wide band (UWB) signal. The latter is achieved through sub-Nyquist sampling allowing to decrease the rate of the analog to digital converter (AID) and digital computational cost. This paper derives the necessary conditions to use sub-Nyquist sampling while keeping the high precision obtained from an UWB signal. These conditions involve ranging signal construction and using a phase-based ranging algorithm adapted to sub-Nyquist sampling. The resulting algorithm achieves sub-mm ranging at 0 dB signal to noise ratio (SNR) by sampling a 8.76 μs long signal burst of 6 GHz bandwidth with 343 MHz A/D rate. Moreover, an energy scalable receiver architecture based on this algorithm is … |
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