Abstract
A new universal algorithm of modulation and demodulation is presented to process most signals of digital phase-related modulation schemes such as M-DPSK, MSK and even some M-FSK with low modulation level. It can easily deal with modulation and demodulation of the signals with different modulation schemes and data rates by only setting a few input arguments of the versatile software modules. The computational complexity of the algorithm is far less than that of conventional methods. The average processing capacity of the algorithm is about 15 instructions per symbol when processing DQPSK signals. It can be applied to software radios.
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References
J. Mitola, Software Radios, IEEE Communications Magazine, 33(1995)5, 24–25.
John G. Proakis, Digital Communications, Third Edition, NY: McGraw-Hill, Inc., 1995, Chapter 5.
C. W. Helstrom, Statistical Theory of Signal Detection, 3rd Edition, NY: Pergamon Press, 1975, Chapter 4.
Stephen G. Wilson, Digital Modulation and Coding, NY: Prentice-Hall, Inc. 1996, Chapter 3.
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Supported by the National Nature Science Foundation of China (Contract No.69872028), Sustentation Fund by Ministry of Education of China, and Open Theme of the Southeast University (Contract No.w99005)
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Zhang, R., Li, J. & Wu, J. A universal algorithm of modulation and demodulation. J. of Electron.(China) 19, 289–295 (2002). https://doi.org/10.1007/s11767-002-0052-9
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DOI: https://doi.org/10.1007/s11767-002-0052-9