Enhanced Symbol Synchronization for MultiUser High Reliable Dynamic Industrial Wireless Communication Recently, the wireless communication system development driven by the ongoing Industry 4.0 (I40) and Industrial Internet of Thing (IIoT) has been growing enormously. In industrial automation and manufacturing, closedloop control applications are commonly used, which require completely new solutions to achieve ultra high reliability and have stringent requirements on message timing and repetitive packet losses. A novel hardwarebased enhanced preambleaided OFDM frame detection and frequency offset estimation aiming at the high reliability and low packet loss rate is introduced in this work. With the introduced carrier frequency offset estimation, key highlights of our work are a) multiuser support, b) low hardware overhead, and c) lower packet loss rate.

Ultra Low Latency Implementation of Robust Channel Estimation and Equalization for Industrial Wireless Communication Systems In industrial environments, automation companies seek for wireless solutions for their realtime demanding production lines. Complicated wiring, feasibility problems in connecting moving parts and high cost limit the operation of wired communication systems like EtherCAT or POWERLINK. The specified ultra reliable low latency communication channel in 5G networks is planned to support robust wireless connection for guaranteed latency of 1 ms. But up to now, it is not yet clear, whether 5G will provide frequently used industry communication interfaces or not. Additionally, to the authors knowledge, there has no 5G transceiver been built up yet, which is proven to fulfill all industry specific demands. For this reason, other standalone solutions for this tasks are developed. To meet the industry requirements, all hardware must be designed for low latency and low hardware complexity at maximum robustness. This paper addresses channel estimation and equalization hardware architectures for use in such systems.