The Research and Performance Simulation of C-WQPSK Modulation

Abstract:

By modifying the modulated waveform, a new communication modulation method, which is called C-WQPSK, is proposed in this paper. This method based on direct carrier QPSK, didn’t consider baseband pulse signal, and redesigned the modulating waveform, its phase angle jump and jump to change duration time all can be changed. Results of the numerical tests indicate that, the method is correctness and effectiveness. Compared with direct carrier QPSK, the method can keep the BER performance, meanwhile, power spectrum decline rate, the energy of modulated carrier wave, and anti-interference ability are improved and enhanced, so it owns high theory significance and engineering application value.

• Periodical: Advanced Materials Research (Volumes 482-484)
• Pages: 771-775
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.482-484.771
• Online since: February 2012
• Authors: Guo Hui Wu, Bao Jun Chu, Ji Yang Dai
• Keywords: Direct Carrier, Power Spectrum, QPSK

References

[1] ShiKai Zhang, LeNan Wu.Orthogona lity and Power Spectra of EBPSK Modulated Waves[J], Journal of applied sciences-electronics and information Engineering.2008.

[2] S.Hoffmann, R. Peveling, T. Pfau, O.Adamczyk, R. Eickhoff, and R.No´e,"Multiplier-free real-time phase tracking for coherent QPSK receivers,"IEEE Photon. Technol. Lett., vol. 21, No. 3, p.137–139, Feb. 2009.

DOI: 10.1109/lpt.2008.2009228

[3] J. Dupuy, and S. Bigo, "Transmission of 16.4 Tbit/s capacity over 2 550 km using PDM QPSK Modulation format and coherent receiver," in Proc.OFC/NFOEC'08, San Diego, CA, Feb. 24–28, 2008, PDP3.

DOI: 10.1109/jlt.2008.2005506

[4] T. Pfau, R. Peveling, J. Hauden, N. Grossard, H. Porte, Y. Achiam, S. Hoffmann, S. Ibrahim, O. Adamczyk, S. Bhandare, D. Sandel, M. Porrmann, and R. Noé, "Coherent digital polarization diversity receiver for real-time Polarization-multiplexed QPSK transmission at 2.8 Gbit/s,"IEEE Photon. Technol. Lett., vol. 19, No. 24, p.1988–1990, Dec. 15, 2007.

DOI: 10.1109/lpt.2007.909897

[5] T. Pfau, S. Hoffmann, R. Peveling, S. Bhandare, S.Ibrahim, O. Adamczyk,M. Porrmann, R. Noé, and Y. Achiam, "First real-time data recovery for synchronous QPSK transmission with standard DFB lasers,"IEEE Photon. Technol. Lett., vol. 18, No. 18, p.1907–1909, Sep. 15,2006.

DOI: 10.1109/lpt.2006.881653

[6] Kim Roberts, Kuang-Tsan Wu, Han Sun, David J. Krause, Charles Laperle."Performance of Dual-Polarization QPSK for Optical Transport Systems"IEEE, Journal of Lightwave Technology, vol. 27, No. 16, p.3546—3558.August 15, 2009.

DOI: 10.1109/jlt.2009.2022484

[7] P. J. Winzer, A. H. Gnauck, C. R. Doerr, M. Magarini, and L. L. Buhl, "Spectrally Efficient Long-HaulOptical Networking using 112-Gb/s Polarization-Multiplexed 16-QAM," J. Lightwave Technol. 28(4),547–556 (2010).

DOI: 10.1109/jlt.2009.2031922

[8] Cheng Zhang, Aiqun HU,A single-side band QPSK modulation scheme[J], Information technology,2010,(06)12.

[9] XinFan Chang, NaCao Lin. Communication Principle (sixth edition) [M].beijing: national defense industry press, 2009:193-200.

[10] ShiKai Zhang,LeNan Wu,Modulation optimization schemes based on geometry characteristics[J], Journal of Southeast University: Natural Science Edition.