# Wireless Channel Estimation with Low-Complexity 1-bit ADC and Unknown Quantization Threshold Academic Article

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• Overview
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### abstract

• In this paper, the problem of signal parameter estimation from measurements acquired by a low-complexity analog-to-digital converter (ADC) with $1$-bit output resolution and an unknown quantization threshold is considered. Single-comparator ADCs are energy-efficient and can be operated at ultra-high sampling rates. For analysis of such hard-limiting systems, a fixed and known quantization threshold is usually assumed. In the symmetric case, ie, zero hard-limiting offset, it is well-understood that in the low signal-to-noise ratio (SNR) regime the signal processing performance degrades moderately by ${2}/{\pi}$($-1.96$ dB) when comparing to an ideal $\infty$-bit converter. Due to hardware imperfections, low-complexity $1$-bit ADCs will in practice exhibit an unknown threshold different from zero. Therefore, the offset has to be estimated jointly with the signal parameters. Here we study the …

### publication date

• March 6, 2017