摘要:在PCM数据流的调制与解调中,信号码型的变换和反变换是极其重要的环节。首先,该文简要介绍了PCM数据流的常见码型(NRZ--L.NRZ-M、NRZ-S.BIФ-L,BIФ-M和BIФ-S)。其次,该文详细论述了PCM码型反变换的原理和技术。最后,该文采用FPGA技术,实现了PCM码型的反变换,即将PCM码型转变为常见TTL码型。
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Applied Geophysics Chinese Physics C Acta Mathematicae Applicatae Sinica Applied Mathematics and Mechanics Chinese Physics B Chinese Optics Letters Acta Pharmacologica Sinica Applied Mathematics:A Journal of Chinese Universities Acta Biochimica et Biophysica Sinica Chinese Journal of Chemical Physics Advances in Atmospheric Sciences Journal of Systems Science and Complexity