Design and Implementation of Wireless Mesh Network Based on SC-FDE

Wireless Mesh network is a kind of distributed network without center. This network structure does not rely on fixed network infrastructure, coupled with its strong resistance to destruction, networking and cancellation is very convenient, which can realize dynamic connection and provide an efficient and reliable communication support environment under the condition of no fixed infrastructure [1]. Single carrier frequency domain equilibrium (SC-FDE) technology is a physical layer solution that is gradually concerned and studied in the design of broadband wireless communication system. In this paper, we first model the wireless channel of SC-FDE and analyze the channel capacity, code error performance and frequency domain equilibrium performance of SC-FDE. On this basis, the SC-FDE physical layer transceiver module based on the embedded processing platform is designed and implemented, including the data symbol structure of the sending end, training word, filter design, timing synchronization, carrier synchronization, frequency domain balance and other key parts of the receiving end. Each module is fully structured and hierarchical design, and relevant parameters can flexibly be adjusted according to the specific application environment.