ETRI Journal

  • 제17권4호
  • /
  • Pages.25-35
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  • 1996
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
권호 표지

SER Analysis of QAM with Space Diversity in Rayleigh Fading Channels

  • 발행 : 1996.01.20
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초록

This paper derives the symbol error probability for quadrature amplitude modulation(QAM) with L-fold space diversity in Rayleigh fading channels. Two combining techniques, maximal ratio combining(MRC) and selection combining(SC), are considered. The formula for MRC space diversity is obtained by averaging the symbol error probability of M-ary QAM in an additive white Gaussian noise(AWGN) channel over a chi-square distribution with 2L degrees of freedom. The obtained formula overcomes the limitations of the earlier work, which has been limited only to deriving the symbol error rate(SER) of QAM with two branch MRC space diversity. The formula for SC space diversity is obtained by averaging the symbol error probability of M-ary QAM in an AWGN channel over the distribution of the maximum signal-to noise ratio among all of the diversity channels for SC space diversity has been reported yet. Analytical results show that the probability of error decreases with the order of diversity gain per additional branch decreases as the number of branches becomes larger. On the other hand, the performance of 16 QAM with MRC becomes much better than that of SC as the number of branches becomes larger. By giving the order of diversity, L, and the number of signal points, M, we have been able to obtain the SER performance of QAM with general space diversity. These results can be used to determine the order of diversity to achieve the desired SER in land mobile communication system employing QAM modulation.

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참고문헌

  1. IEEE Trans. J. Select. Areas Commun. v.SAC-5 no.2 Fading channel issue in system Stein, S.
  2. Communication Systems and Techniques Schwartz, M.;Bennett, W.R.;Stein, S.
  3. An Introduction to GSM Redl, S.M.;Weber, M.K.;Oliphant, M.W.
  4. CDMA System Engineering Training Handbook Qualcomm
  5. Nordic Radio Symp. Performance of a 30 kHz digital TDMA cellular radio system Raith, K.;Kahre, R.
  6. Modern Quadrature Amplitude Modulation-Principles and Applications for Fixed and Wireless Communications Webb, W.;Hanzo, L.
  7. IEEE Trans. Commun. v.COM-32 no.1 Phase-locked transparent tone in band (TTIB): a new spectrum configuration particularly suited to the transmission of data over SSB mobile radio McGeehan, J.P.;Bateman, A.J.
  8. 39th IEEE Veh. Technol. Conf. Rayleigh fading compensation method for 16 QAM in digital land mobile channels Sampei, S.;Sunaga, T.
  9. IEEE Trans. Veh. Technol. v.VT-42 no.2 Rayleigh fading compensation for QAM in land mobile radio communications Sampei, S.;Sunaga, T.
  10. IEEE Trans. Veh. Technol. v.VT-42 no.3 Performance of multilevel QAM with post-detection maximal ratio combining space diversity for digital land-mobile radio communications Sunaga, T.;Sampei, S.
  11. IEEE Trans. J. Select. Areas Commun. v.SAC-7 no.2 TCMP - a modulation and coding strategy for Rician fading channels Moher, M.L.;Lodge, J.H.
  12. IEEE Trans. Veh. Technol. v.VT-40 no.4 An analysis of pilot symbol assisted modulation for Rayleigh fading channels Cavers, J.K.
  13. Proc. IRE v.47 no.2 Linear diversity combining techniques Brennan, D.G.
  14. IEEE Trans. Commun. v.COM-33 no.12 Performance of MRC diversity systems for the detection of signals with Nakagami fading Al-Hussaini, E.K.;Al-Bassiouni, A.M.
  15. IEEE Trans. Commun. v.39 no.2 Analysis of equal gain diversity on Nakagami channels Beaulieu, N.C.;Abu-Dayya, A.A.
  16. IEEE Trans. Commun. v.COM-37 no.1 On the symbol error probability of maximum-selection diversity reception schemes over a Rayleigh fading Chyi, G.T.;Proakis, J.G.;Keller, C.M.
  17. IEEE Trans. Commun. v.COM-30 no.3 Optimized selection diversity for Rayleigh fading channels Leung, C.
  18. Digital Communications Proakis, J.G.
  19. Canadian Journal of Electrical and Computer Engineering On the validity of the slow and moderate fading models for matched filter detection of Rayleigh fading channels Cavers, J.K.
  20. IEEE Trans. Veh. Commun. v.COM-26 no.1 Error probability characteristics for CPSK signal through m- distributed fading channel Miyagaki, Y.;Morinaga, N.;Namekawa, T.