Seminário “1-bit Quantization and Oversampling at the Receiver: How to Benefit in Terms of Achievable Rate”
Data da publicação: 12 de abril de 2019 Categoria: NotíciasResponsável: Prof. Dr. Dr. Lukas Landau (CETUC-PUC/RJ)
Data: 11 de novembro de 2016
Horário: 15:30h
Local: Sala de Seminários do GTEL (Bloco 722 do Campus do Pici)
Ementa:
Coarse quantization at the receiver is attractive in terms of energy efficiency, which is a key issue at high sampling rates required for Multigigabit per second communication and for low-power applications in the context of the internet-of-things. In this regard, the utilization of receivers with 1-bit analog-to-digital conversion is a promising approach. The loss in achievable rate, which comes with the coarse quantization can be partially compensated by oversampling at the receiver. The approach is discussed in terms of Nyquist bandlimited signals, e.g., based on Sinc filters and also in terms of more practical waveforms considering the 90% power containment bandwidth. The proposed methods outperform all prior results known from the literature on noisy channels with 1- bit quantization at the receiver in terms of achievable rate. It is shown that 1-bit oversampling at the receiver can be even superior in terms of achievable rate in comparison to resolution in amplitude with the same number of comparator operations per time interval.
