Abstract
Wireless connectivity offers industrial automation the flexibility, mobility and reconfigurability it requires to cope with the new challenges of industry 4.0. Communication in industrial applications like factory automation (e. g. closed-loop control) imposes ambitious demands on wireless communication systems as these applications require very low latencies at ultra-high reliabilities. Additionally, the industrial environment encourages harsh channel conditions due to numerous metallic reflectors in typical factory halls. Since state of the art wireless technologies are not able to completely fulfill these requirements especially in industrial wireless channels, novel approaches are being developed. In that regard, Parallel Sequence Spread Spectrum (PSSS) transmission is seen as a promising technology as it allows transmission with very short latencies. Nevertheless, its bit error rate performance has not yet been analyzed for typical industrial wireless channels. This paper presents a PSSS system concept and two associated receiver structures which might be suitable for the targeted applications. A detailed mathematical description of the transmission of the PSSS signal in an additive white Gaussian noise channel and a time-dispersive channel is given. The performance of the system approach is analysed in industrial multipath-fading channels. Simulations show that the bit error rate curves of both receiver structures under consideration vary enormously for the considered channels. It can be shown that a multi-user detection receiver achieves better BER results than a single-user matched filter, but further ways of improvement need to be analysed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.