Design and Implementation of 400 MHz Video Real-Time Transmission System Based on Self-Organizing Wireless Mesh Network

At present, the common wireless multimedia transmission systems are mainly based on mobile networks and wireless local area networks. Most of the devices work in the 2.4 GHz/5 GHz frequency band and have poor signal penetration capability, which is not suitable for complex environment applications. Meanwhile, Wireless mesh networks are characterized by self-organization, self-healing, multi-hop and so on. In this paper, we down-converted the 2.4 GHz Wi-Fi signal, designed and implemented a wireless mesh network architecture broadband wireless multimedia transmission system based on the IEEE 802.11s protocol, which works at 400 MHz, the open band I. The system consists of a mobile central node station and 15 simple mobile stations to form a self-organized network, realizing independent wireless multimedia transmission in complex environment. According to results, its signal can diffract most objects in real scenes, such as 2-storey basement and 3-storey above ground buildings, which has high mobility, high reliability and meets complex wireless environment applications such as complex buildings, basements, jungles, etc.