Several Modulation And Demodulation Algorithms In Software Radio Research

Software Radio is a new architecture of communication system that is brought forward these years in radio area. It breaks through the localization of traditional radio in simple function and bad expansibility,and it focuses on the new design idea which is based on open and common board and use updateable and reconfigurable internet applications to realize all kinds of radio function. So users can select different internet applications in common hardware board to meet different requirement in different period and different circumstance,and the investor can develop new internet applications in common hardware board to meet demand of user and market. This can not only save a great deal in hardware investment,but also shorten the development period of new products,accommodate the change of market,and make great economic benefit.The research in software radio is not more than ten years,but has made a great many fruits,but it is too little to set up an integrated theory system,and software radio includes many areas such as modern communication system(which includes modem source/channel encoding and decoding,equalization,encrypt and decrypt and so on),wideband antenna theory,digital signal process,microelectronics,computer and so on. This thesis mainly does research for modem in modem communication. The arrangement of the thesis is below:Chapter 1 gives brief description of software radio in the origin and development status and for the future.Chapter 2 introduces the architecture of software radio and related theory.Chapter 3 introduces the theory of MSK modemChapter 4 introduces the theory of OMSK modemChapter 5 gives some results of simulation and realization in DSP...