每年出版 12 期
ISSN 打印: 0040-2508
ISSN 在线: 1943-6009
Indexed in
COMMUNICATION OVER FADING CHANNEL BY USING BISPECTRUM- BASED CODE
摘要
A novel bispectrum-based approach is suggested for exploiting in communications over fading channel that is encountered in mobile radio networks often enough. Binary bispectral code generated through multi-frequency triplet-signal pulses is developed to combat fading. Distinctive features are given in the triplet-signals in the form of phase coupling. Decision making rule is based on the extraction the maximum peak values evaluated in the form of triplet-signal bispectrum magnitudes. The purpose of this paper is to examine the performance of the binary communication system operating under multipath Rayleigh and Rician radio channels, as well as under influence of Gaussian noise, random signal translations and Doppler frequency shifts. The probability of bit error at the decoder output is determined by computer simulations. Comparison of the performances provided by suggested bispectral code and known frequency redundant code has been accomplished. Computer simulation results illustrate less sensitivity of the proposed bispectral code to the fading, additive Gaussian noise, random signal translations and Doppler frequency shifts. For the radio communication channels considered in this paper, bispectrum-based technique under identical initial conditions provides better performance as compared with known multi-frequency and frequency redundant methods.
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Feher, K., (1999) , Wireless Digital Communications, Prentice-Hall PTR, New Jersey, 520 p.
-
Sklar, B., (2003) , Digital Communications: Fundamentals and Applications, Moscow, Russia: Publishing House Williams, 1104 p., (in Russian).
-
Proakis, J.G., (1989) , Digital Communications, New York: McGraw-Hill, 917 p.
-
Alamouti, S.M., (1998) , A simple transmit diversity technique for wireless communications, IEEE Journal on Select Area in Communications, 16(8), pp. 1451-1458.
-
Wang, Z., (2000) , Wireless multicarrier communications: where Fourier meets Shannon, IEEE Signal Processing Magazine, 17, pp. 29-48.
-
Nikias, C.L. and Raghuveer, M.R. (1987) , Bispectral estimation: A digital signal processing framework, Proceeding IEEE, 75(4), pp. 869-891.
-
Totsky, A.V., Zelensky, A.A., and Kravchenko, V.F., (2015) , Bispectral Methods of Signal Processing, Walter de Gruyter GmbH, Berlin/Munich/Boston, 199 p.
-
Astola, J.T., Egiazarian, K.O., Totsky, A.V., and Naumenko, V.V., (2012) , Novel noise resistant bispectrum-organized modulation technique in digital wireless communication systems, Telecommunications and Radio Engineering, 72(18), pp. 1639-1649.
-
Molchanov, P.A., Astola, J.T., Egiazarian, K.O., Totsky, A.V., and Zelensky, A.A., (2014) , A novel bispectrum-based frequency encoding technique developed for noisy and multipath fading radio links, Telecommunications and Radio Engineering, 73(3), pp. 221-239.
-
Naumenko, V.V., Solodovnik, V.F., Totsky, A.V., and Astola, J.T., (2015) , Triplet signal generation for bispectrum-based digital wireless communication systems, Telecommunications and Radio Engineering, 74(8), pp. 695-707.
-
Lerner, T. and Nicholson, D.L., (1973) , The performance of code diversity systems on a slowly fading Rayleigh channel, IEEE Transactions on Communications, COM-21(2), pp. 109-116.