Construction Of High Speed ZigBee System Based On MG2455

Wireless sensor network (WSN) combines many research fields and hotspot research directions in modern communication science and computer science, it receives much attention and favor by each country and IT tycoon all around the world. As a rapid rise of the research industry in the21st century, it integrates embedded programming and debugging, sensor technology and wireless communication technology together in a system, and plays an increasingly important role in environmental monitoring, biomedical and intelligent household.The ZigBee is the implementation technology of wireless sensor network which was born in this environment, with its low power consumption, low cost and the characteristic of large node capacity, it has great market value and broad application prospects. So far, most of the chips that support ZigBee provide a maximum data transfer rate of250Kbps in general, although the satisfactory performance in the situation of low-data rate, the ZigBee technology still unable to meet high-rate communication and the application of large amounts of data throughput. The research in this dissertation constructs a high-speed ZigBee system that support the speed of data transmission to1Mbps besides guarantees the advantage of low power consumption, which make application domain extend to the voice and video level.The High-speed ZigBee system that this dissertation researched mainly completed the following missions:(1) design overall scheme of the system. Making fully comparison of pros and cons in numerous solutions as well as the system complexity, and select RadioPulse MG2455produced by South Korea as RF chip, and complete the construction of the whole hardware platform.(2) Research the working mechanism of the ZigBee each primitive, making in-depth analysis and practice of the overall architecture of protocol, the topology structure of the network and the coordinator and node networking technology, complete the configuration and settings of the application parameters of module of network initialization, networking base on MG2455network as well as parameters related to protocol stack, finally implement the function of network access and voice transmission. (3) complete the hardware and software testing.control the various settings of data communication between a transmitter and receiver through the interface, verify the high-speed transmission rate and the ZigBee network transmission of voice signal.