  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.
