Advanced sensor gateway based on FPGA for wireless multimedia sensor networks

In this paper, we design and implement an advanced FPGA (Field-Programmable Gate Array)-based sensor gateway for wireless multimedia sensor networks. We propose a gateway architecture termed "Heterogeneous Gateway", which provides multiple interfaces to PSTN, GSM, CDMA, Internet, and so on, for supporting various application scenarios. Meanwhile, the gateway accesses to PSTN (Public Switched Telephone Network) via HDLC (High Data Link Control) protocol, which has the characteristics of rapidity and reliability and has been widely used in the field of data communication. In this paper, we first analyze the overall structure of HDLC functions of each module, and the implementation principles, then illustrate the implementation of key modules by using FPGA, finally show the simulation results on the reliability and accuracy of the FPGA.