Design of Wireless Communication System in Mine

With the rapid development of communication technology, the introduction of wireless communication in some limited areas, such as tunnels, semi-buried highways, underground car parks, mines and other scenarios, gradually reflects the development prospects of the scheme. This paper mainly focuses on the space-constrained mine environment, proposes the use of SC-FDE technology for wireless communication in mines, and investigates the timing synchronisation and frequency bias estimation algorithms. In order to solve the synchronisation problem of SC-FDE communication scheme, the characteristics of ZC sequence and the influence of frequency deviation on its correlation are analysed. In order to resist the influence of frequency bias and noise in the mine channel, this paper proposes a timing synchronisation algorithm based on the improved ZC sequence on the basis of the inter-correlation synchronisation algorithm, and at the same time gives a frequency synchronisation algorithm based on two iterations of phase difference to compensate for the frequency bias, and carries out the simulation analysis of the proposed algorithm on the basis of the channel model established in this paper.