2019/05/19 by Sven Jacobsson, Jacobsson, Sven, Carl Lindquist +8
Computer Science · Engineering · Mathematics · #Advanced Wireless Communication Techniques #Cellular Automata and Applications #Cooperative Communication and Network Coding #cs.IT #eess.SP #math.IT
paper · pdf · doi:10.48550/arxiv.1905.07792
arxiv created 2019/05/19 · arxiv updated 2019/05/21
We consider timing and frequency synchronization for the massive multiuser (MU) multiple-input multiple-output (MIMO) downlink where 1-bit digital-to-analog converters (DACs) are used at the base station (BS). We focus on the practically relevant scenario in which orthogonal-frequency division multiplexing (OFDM) is used to communicate over frequency-selective channels. Our contributions are twofold. First, we use Bussgang's theorem to analyze the impact on performance caused by timing and frequency offsets in the presence of 1-bit DACs at the BS. Second, we demonstrate the efficacy of the widely used Schmidl-Cox synchronization algorithm. Our results demonstrate that the 1-bit massive MU-MIMO-OFDM downlink is resilient against timing and frequency offsets.