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This paper designs an embedded application system based on ARM processor, and designed a run on the system of modulation and demodulation and RS encoding, decoding, convolutional coding, victor than decoding software, by loading a different application, many kinds of communication mode can be realized. At first, this paper combined with the system hardware and software design, introduces the application of ARM processor, and then the analysis of the ASK, FSK, PSK etc, on the basis of signal modulation and demodulation algorithm, this paper expounds the modulation and demodulation method of software realization. For RS encoding, decoding and convolution coding, victor than decoding part, this article mainly elaborated on the basis of analyzing the basic principle on the program design methods and programming skills. It also combined with the actual design, each part of the software performance is analyzed, the system communication capabilities were evaluated. This design for the digital communication system provides a simple, easy solution, on the ARM processor in the application of digital communication study has important reference value.
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