# Spectral shaping with low resolution signals

## TL;DR

This paper investigates the effects of low-resolution DACs and ADCs, especially 1-bit resolution with oversampling, on spectral efficiency and SNR, proposing a system architecture optimized for minimal spectral occupation and quantization effects.

## Contribution

It introduces a novel single carrier system architecture optimized for 1-bit quantization, addressing spectral confinement and SNR requirements in low-resolution communication systems.

## Key findings

- Spectral confinement is achievable despite coarse quantization.
- The proposed architecture minimizes spectral occupation and required SNR.
- Simulations confirm effective spectral shaping with 1-bit resolution.

## Abstract

We aim at investigating the impact of low resolution digital-to-analog converters (DACs) at the transmitter and low resolution analog-to-digital converters (ADCs) at the receiver on the required bandwidth and the required signalto- noise ratio (SNR). In particular, we consider the extreme case of only 1-bit resolution (with oversampling), where we propose a single carrier system architecture for minimizing the spectral occupation and the required SNR of 1-bit signals. In addition, the receiver is optimized to take into account the effects of quantization at both ends. Through simulations, we show that despite of the coarse quantization, sufficient spectral confinement is still achievable.