Multi-Branch Fractional Multi-Bit Differential Detection of Continuous Phase Modulation with Decision Feedback

Jinhua Sun, Xiaojun Wu

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DOI: 10.4236/cn.2011.31004                

Abstract

Differential detection of continuous phase modulation suffers from significant intersymbol interference. To reduce bit error rate, multi-branch fractional multi-bit differential detection (MFMDD) with decision feed-back is proposed. By introducing decision feedback in multi-bit differential detected signals, severe inter-symbol interference can be removed. Simulation results show that the proposed structure can greatly im-proves the performance compared with MFMDD without decision feedback, and the performance of 9 FMDD is very near to the performance of the coherent detection.

Keywords

Continuous Phase Modulation, Differential Detection, Fractional Multi-Bit Differential Detection, Decision Feedback

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	M .K. Simon and C. C. Wang, “Differential Detection of Gaussian MSK in a Mobile Radio Environment,” IEEE Transactions on Vehicle Technology, Vol. VT-33, No. 4, 1984, pp. 307-320. doi:10.1109/T-VT.1984.24023
[2]	G. Colavolpe and R. Raheli, “Noncoherent Sequence Detection of CPM,” Electronics Letters, Vol. 34, No. 3, 1998, pp. 259-261. doi:10.1049/el:19980225
[3]	M. Wardle and M. Rice, “PAM Approach to Weak CPM and Its Application to Flight Termination Receivers,” IEEE Transactions on Aerospace and Electronic Systems, Vol. 44, No. 2, 2008, pp. 468-480. doi:10.1109/TAES. 2008.4560200
[4]	E. Perrins and M. Rice, “PAM Representation of Ternary CPM,” IEEE Transactions on Communications, Vol. 56, No. 12, 2008, pp. 2020-2024. doi:10.1109/TCOMM. 2008.041108
[5]	G. Colavolpe and R. Raheli, “Noncoherent Sequence Detection of Continuous Phase Modulations,” IEEE Transactions on Communications, Vol. 47, No. 9, 1999, pp. 1303-1307. doi:10.1109/26.789664
[6]	E. Perrins, R. Schober, M. Rice and M. K. Simon, “Multiple-Bit Differential Detection of Shaped-Offset QPSK,” IEEE Transactions on Communications, Vol. 55, No. 12, 2007, pp. 2328-2340. doi:10.1109/TCOMM.2007.910972
[7]	Q. Zhi, C. H. Zhou and L. M. Xiao, “Non-Coherent Demodulation of Continuous Phase Modulation Signals Based on Multi-Symbol Differential Correlation,” Journal of Tsinghua University, Vol. 47, No. 4, 2007, pp. 507- 510.
[8]	K. H. Lee and J. S. Seo, “Fractional Multi-Bit Differential Detection of Continuous Phase Modulation,” ETRI Journal, Vol. 26, No. 6, 2004, pp. 635-640. doi:10.4218/ etrij.04.0103.0065
[9]	K. H. Lee and J. K. Kim, “Correlative Encoded (CE) FSK for Use in RF Home Networking,” Proceedings of IEEE VTC 2002-Fall, Vancouver, IEEE Press, 2002, pp. 2400- 2404.
[10]	J. H. Sun and X. J. Wu, “Multi-Branch Fractional Multi- Bit Differential Detection of Continuous Phase Modulation,” Journal of Xidian University, Vol. 37, No. 3, 2010, pp. 423-428.
[11]	Y. Abbas, M. Dimitrios and F. Kamilo, “Differential Detection of GMSK Using Decision Feedback,” IEEE Transactions on Communications, Vol. 36, No. 6, 1988, pp. 641-649. doi:10.1109/26.2784