Simultaneous Synchronization and Detection in Loosely Synchronized Tiny Packet Networks

Internet of Things (IoT) applications are anticipated to bloom in the future, and two popular industry areas related to Internet of Things (IoT) are smart houses and smart factories. To make a home or factory smart, hundreds or thousands of sensors need to work and communicate together with simple, secure and stable connectivity. Thus, the design of smart homes and smart factories relies on wireless sensor networks, whose transmission is often characterized to be sporadic. Classical approaches to multiuser communications rely on tight time synchronization achieved by employing coordinating infrastructure, but in a mass sensor transmission system, sensors may communicate with each other directly without relying on coordinating mechanisms. Our study explores the possibilities of simple and reliable multiuser detection in DS-CDMA system for few data and short distance mass sensor connectivity with joint synchronization of data. Furthermore, we discussed a scenario where spreading sequences are overused. We show that our system has strong potential for excellent mass sensors detection performance without synchronizing infrastructure.