Abstract
This paper compares the spectral efficiency of a hybrid DS/FH-CDMA system employing variants of MFSK modulation. The proposed modulation schemes are: non-coherent MFSK, MFSK-DPSK, and wideband MT-FSK. In each case, the signal to be transmitted is modulated by a high rate BPSK signal (the PN sequence) and then hopped at a rate higher than the symbol rate into different frequency bins that are sufficiently spaced so that the fading process in each frequency bin appears to be independent of the fading in any other frequency bin. The bit error rate performance of each modulation scheme in Rayleigh fading is found by analytical means. Error control coding is also considered. These results are used to find the spectral efficiency of the DS/FH-CDMA system where the multiple access interference is modeled by white Gaussian noise. It will be shown that MFSK with rate 1/2 dual-k coding provides the best results for the cases considered in this paper.
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References
H. Asmer et al., “A hybrid DS/FH spread spectrum system for mobile radio channel: performance and capacity analysis”, Proc. IEEE Veh. Tech. Conf., pp. 305–308, 1993.
L. Sadiq, A.H. Aghvami, “Performance of an asynchronous hybrid spread spectrum system in the presence of interference, Rician fading, and AWGN”, IEE Proceedings-I, vol. 138, no. 2, Apr. 1991.
Z. Tan, I.F. Blake, “Performance analysis of noncoherent DS-SFH spread spectrum multiple access for indoor wireless communications”, Conf. Record IEEE MILCOM, pp. 851–855, 1992.
J. Wang, A. Yongaço¯glu, “Capacity comparison between direct sequence PSK and MFSK spread spectrum systems in CDMA applications”, Proc. 4th Canadian Conf. Elect. and Comp. Eng., Quebec City, Quebec, pp. 53.51–53.54, Sept. 1991.
J.G. Proakis, Digital Communications, 2nd Ed., New York: McGraw-Hill, 1990.
D. Slepian, “Permutation modulation”, Proc. IEEE, vol. 53, pp. 228–236, Mar. 1965.
H.L. Schneider, “Data transmission with FSK permutation modulation”, Bell Syst. Tech. Jour., pp. 1131–1138, July–Aug. 1968.
F.G. McWilliams, N.J. Sloane, The Theory of Error Correcting Codes, Amsterdam: North-Holland Publishing Co., 1977.
C. D'Amours, “Hybrid DS/FH-CDMA Systems Employing FSK Based Modulation Schemes”, Ph. D. Dissertation, University of Ottawa, Sept. 1995.
E.R. Berlekamp, et al., “The application of error control to communications”, IEEE Comm. Mag., vol. 25, pp. 44–57, Jan. 1987.
D.J. Taipale, M.J. Seo, “An efficient soft decision Reed Solomon decoding algorithm”, IEEE Trans. Inf. Theory, vol. 40, no. 4, pp. 1130–1139, July 1994.
J.P. Odenwalder, “Dual-k convolutional codes for noncoherently demodulated channels”, Proc. ITC'76, pp. 165–174, Sept. 1976.
T.T. Ha, Digital Satellite Communications, New York: McGraw-Hill, 1986.
C. D'Amours, A. Yongaço¯glu, “Hybrid DS/FH-CDMA System Employing MT-FSK Modulation for Mobile Radio”, Proc. IEEE PIMRC Conf., Toronto, Ont., pp. 164–168, Sept. 1995.
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© 1996 Springer-Verlag Berlin Heidelberg
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D'Amours, C., Yongaço¯glu, A. (1996). Comparison of MFSK variants for a hybrid DS/FH-CDMA system in Rayleigh fading. In: Chouinard, JY., Fortier, P., Gulliver, T.A. (eds) Information Theory and Applications II. CWIT 1995. Lecture Notes in Computer Science, vol 1133. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0025145
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DOI: https://doi.org/10.1007/BFb0025145
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