The Application of DFT Technology in Soft Demodulation of π/4-DQPSK Signals

Yan Jun Wu; Gang Fu; Peng Yu

doi:10.4028/www.scientific.net/AMM.644-650.4439

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 644-650The Application of DFT Technology in Soft...

The Application of DFT Technology in Soft Demodulation of π/4-DQPSK Signals

Abstract:

Presented to the π / 4 differential quaternary phase shift keying signal (π/4-DQPSK) using the discrete Fourier transform (DFT) for software demodulation algorithm in consideration of the actual received waveform into transition to π/4-DQPSK District and stable region, and only the waveform sampling point DFT transform the region stable recovery decision. simulation gives the demodulation method to achieve the same differential demodulation relatively simple structure, and the anti-noise in the signal to noise ratio greater than 3dB better performance than the differential demodulation performance, expected the algorithm is applied π/4-DQPSK software radio receiver design.

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Periodical:

Applied Mechanics and Materials (Volumes 644-650)

Pages:

4439-4442

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.644-650.4439

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Online since:

September 2014

Authors:

Yan Jun Wu*, Gang Fu, Peng Yu

Keywords:

Discrete Fourier Transform, Software Radio

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* - Corresponding Author

References

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