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Constant Envelope Enhanced FQPSK and Its Performance Analysis  

Xie, Zhidong (Institute of Communication Engineering, PLA University of Science and Technology)
Zhang, Gengxin (Institute of Communication Engineering, PLA University of Science and Technology)
Bian, Dongming (Institute of Communication Engineering, PLA University of Science and Technology)
Publication Information
Journal of Communications and Networks / v.13, no.5, 2011 , pp. 442-448 More about this Journal
Abstract
It's a challenging task to design a high performance modulation for satellite and space communications due to the limited power and bandwidth resource. Constant envelope modulation is an attractive scheme to be used in such cases for their needlessness of input power back-off about 2~3 dB for avoidance of nonlinear distortion induced by high power amplifier. The envelope of Feher quadrature phase shift keying (FQPSK) has a least fluctuation of 0.18 dB (quasi constant envelope) and can be further improved. This paper improves FQPSK by defining a set of new waveform functions, which changes FQPSK to be a strictly constant envelope modulation. The performance of the FQPSK adopting new waveform is justified by analysis and simulation. The study results show that the novel FQPSK is immune to the impact of HPA and outperforms conventional FQPSK on bit error rate (BER) performance. The BER performance of this novel modulation is better than that of FQPSK by more than 0.5 dB at least and 2 dB at most.
Keywords
Constant envelope enhanced Feher quadrature phase shift keying (FQPSK); constant envelope modulation (CEM); FQPSK; high power amplifier (HPA); satellite and space communications; Viterbi algorithm;
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1 "Bandwidth efficient modulations," CCSDS., Tech. Rep. CCSDS 413.0-G-l, Apr. 2003.
2 D. K. Borah and S. Horan, "Detection techniques for enhanced FQPSK signals," in Proc. IEEE GLOBECOM, San Antonio, TX, 2001, pp. 654-658.
3 E. Perrins, T. Nelson, and M. Rice, "Coded FQPSK and SOQPSK with iterative detection," in Proc. Military Commun. Conf., Atlantic, USA, Oct. 2005.
4 B. Tian and Y. J. Shi, "A constant envelope FQPSK modulation for deep space communications," China Commun., vol. 3, no. 6, pp. 50-56, Dec. 2006.
5 Z. D. Xie, G. X. Zhang, and H. P. Zhu, "A novel waveform for FQPSK modulation," in Proc. IEEE ICCS, Guangzhou, China, Nov. 2008. pp. 851-854.
6 M. Rice, T. Oliphant, O. Haddadin, and W. McIntire, "Estimation technique for GMSK using linear detectors in satellite communications," IEEE Trans. Aerosp. Electron. Syst., vol. 43, no. 4, pp. 1484-1495, Oct. 2007.   DOI
7 C. Liang, J. Jong, W. Stark, and J. East, "Nonlinear amplifier effects in communications systems," IEEE Trans. Microw. Theory Tech., vol. 47. no. 8, pp. 1461-1466, Aug. 1999.   DOI   ScienceOn
8 J.-S, Lin and K. Feher, "Noncoherent limiter-discriminator detection of standardized FQPSK and OQPSK," in Proc. IEEE WCNC, Louisiana, USA. Mar. 2003, pp. 795-800.
9 D. Lee, M, K. Simon, and T. Y. Yan, "Enhanced performance of FQPSK-B receiver based on trellis-coded Viterbi demodulation," in Proc. Int. Telemetering Conf., San Diego, California, USA, Oct. 2000.
10 M. K. Simon and T. Y Yan, "Performance evaluation and interpretation of unfiltered Feher-patented quadrature phase shift keying (FQPSK)," JPL, TMO Progress Rep. 42-137, 1999,
11 H. C. Park, L. Kwyro, and K. Feher, "Continuous phase modulation of spectrally efticient FQPSK signals," in Proc. IEEE VTC, Orlando, USA, Oct. 2003, pp. 692-695.
12 K. Feher, "FQPSK: A superior modulation technique for mobile and personal commnnications," IEEE Trans. Broadcast., vol. 39, no. 2, pp. 288-294, 1993.   DOI   ScienceOn
13 H. C. Park and K. Feher, "Noncoherent detection improves FQPSK system performance," Microwaves & RF, vol. 40, no. 11, pp. 55-62, Nov. 2001.
14 M. K. Simon, Bandwidth efficient digital modulation with application to deep space communications. New York: Wiley, 2003, pp. 125-166,