A Wireless Local Area Network Design And Engineering Practice

With the development of society, communication become more and more important for human. In engineering practice, wireless communication is frequently used. In some applications, integration wireless communication chips are used considering the cost and complexity. For example, as a way of wireless communication physics layer realization of multiple access and identification of network, nRF401, a product of nordic Corporation, adopts some MCUs which are in common use in order to carry out some managing and logic manipulative functions. Based on wireless network theory, problems such as multiple access and identification of network are solved. During the course, some techniques as CSMA are adopted considering our project work in this paper. Experience of designing a wireless LAN of lower cost and lower speed is provided. In the first chapter, the background and propose of this problem are introduced. The details of implementary processes and design program of the project involved in this subject are presented in the second chapter. In the third, fourth and fifth chapters, some main theories referenced in our engineering program are introduced and analyzed. The properties of radio frequency's channel are analyzed in chapter 3, and comparison is made using the communications distance in this project work. The wireless communication's physics layer, the mechanism of carrier wave interception and that in this project are presented and analyzed in chapter 4. In chapter 5, the CSMA strategy of MAC layer in wireless LAN and the program of multiple access in the project are presented. Concluding remarks of the work are presented in the last chapter. Prospects other applications are showed in this chapter.