Zero-Crossing Precoding with MMSE Criterion for Channels with 1-BIT Quantization and Oversampling
Conference: WSA 2020 - 24th International ITG Workshop on Smart Antennas
02/18/2020 - 02/20/2020 at Hamburg, Germany
Proceedings: ITG-Fb. 291: WSA 2020
Pages: 6Language: englishTyp: PDF
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Authors:
Melo, Diana M. V.; Landau, Lukas T. N.; de Lamare, Rodrigo C. (Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro, Brazil)
Abstract:
Systems with coarse quantization have attracted a great interest due to the low complexity and low energy consumption requirements of new applications as IoT. In this study, we present a novel waveform for the bandlimited channel with 1-bit quantization and oversampling. The novel method implies that the information is conveyed within the time instances of zero-crossings, which is devised together with a space-time MMSE precoding. Numerical evaluations of the BER show that the proposed approach outperforms the existing method and that the MMSE criterion yields a benefit in comparison to the maximum distance to decision threshold criterion for low SNR.