Pilot-Based Uplink Power Control in Single-UE Massive MIMO Systems With 1-Bit ADCs
Abstract
We propose uplink power control (PC) methods for massive multiple-input multiple-output systems with 1-bit analog-to-digital converters, which are specifically tailored to address the non-monotonic data detection performance with respect to the transmit power of the user equipment (UE). Considering a single UE, we design a multi-amplitude pilot sequence to capture the aforementioned non-monotonicity, which is utilized at the base station to derive UE transmit power adjustments via single-shot or differential power control (DPC) techniques. Both methods enable closed-loop uplink PC using different feedback approaches. The single-shot method employs one-time multi-bit feedback, while the DPC method relies on continuous adjustments with 1-bit feedback. Numerical results demonstrate the superiority of the proposed schemes over conventional closed-loop uplink PC techniques.
Cite
@article{arxiv.2310.16601,
title = {Pilot-Based Uplink Power Control in Single-UE Massive MIMO Systems With 1-Bit ADCs},
author = {Amila Ravinath and Bikshapathi Gouda and Italo Atzeni and Antti Tölli},
journal= {arXiv preprint arXiv:2310.16601},
year = {2023}
}