Adaptive RLS Channel Estimation and SIC for Large-Scale Antenna Systems with 1-Bit ADCs

Conference: WSA 2018 - 22nd International ITG Workshop on Smart Antennas
03/14/2018 - 03/16/2018 at Bochum, Deutschland

Proceedings: ITG-Fb. 276: WSA 2018

Pages: 4Language: englishTyp: PDF

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Authors:
Shao, Zhichao; Landau, Lukas; Lamare, Rodrigo de (Center for Telecommunications Studies (CETUC), Pontifical Catholic University of Rio de Janeiro, RJ, Brazil)

Abstract:
We propose a novel low-resolution-aware recursive least squares channel estimation algorithm for uplink multi-user multipleinput multiple-output systems. In order to reduce the energy consumption, 1-bit ADCs are used on each receive antenna. The loss of performance can be recovered by the large-scale antenna arrays at the receiver. The proposed adaptive channel estimator can mitigate the distortions due to the coarse quantization. Moreover, we propose a low-resolution-aware minimum mean square error based successive interference canceler to successively mitigate the multiuser interference. Simulation results show good performance of the system in terms of mean square error and bit error rate.