The Design Of Indoor Wireless LAN Scheme Based On Infrared Transfer Technology

The technology of infrared wireless communication offers us a wireless connection and communication mode that is low cost, short distance and high speed. Using a simple transceiver can realize wireless interlinkage. IrDA infrared data association brings forward IrDA infrared communication protocol that is the base of a large number of equipments' interlinkage with infrared data interface.The paper, based on the study of IrDA, VFIR protocol, technology and Ethernet card technology, proposes a scheme which can build astroid infrared wireless LAN (local area network) in the room. It designs infrared wireless interlinked configuration of data frame and link protocol, the interface circuits of Ethernet card and the card of receiving and sending infrared using FPGA. Otherwise, it has finished transfers control of infrared encoder and design of logical time sequence. At last, it gives out a coding and decoding scheme of HHH (1,13) code, which can advance the connection speed of infrared wireless internet.