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논문 상세정보

Abstract

In this paper, the issue of blind detection of Alamouti-type differential space-time (ST) ${\pi}/2$-shifted BPSK modulation in static Rayleigh fading channels is considered. We introduce a novel transformation to the received signal from each receiver antenna such that this binary ST modulation, which has a second-order transmit-diversity, is equivalent to QPSK modulation with second-order receive-diversity. The pre-detection combining of the result of transformation allows us to apply a low complexity detection technique specifically designed for receive-diversity, namely, scalar multiple-symbol differential detection (MSDD). With receiver complexity proportional to the observation window length, our receiver can achieve the performance 1.5dB better than that of conventional differential detection ST and 0.5dB worse than that qf a coherent maximum ratio combining receiver (with differential decoding) approximately.

참고문헌 (18)

  1. Alamouti, S.(1998), 'A simple transmit diversity technique for wireless communications,' IEEE J. Select. Areas Commun., vol. 16, pp. 1451-1458 
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  8. Lampe, L. H. J., Schober, R. and Fischer, R. F. H(2003), 'Coded differential space-time modulation for flat fading channels', IEEE Trans. Wireless Commun., vol. 2, pp. 582-590 
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  12. Michael Riediger, Ho, P. and Kim, J. H (2005), 'A receiver for Differential Space-Time pi/2 shifted BPSK modulation Based on Scalar-MSDD and EM Algorithm', EURASIP Journal on WIreless Commun. and Networking, vol 2005, No.2 
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  15. Schober, R. and Lampe, L. H. J.(2002), 'Noncoherent receivers for differential space-time modulation,' IEEE Trans. Commun., vol. 50, pp. 768-777 
  16. Tarasak, P. and Bhargava, V. K.(2002), 'Reduced complexity multiple symbol differential detection of space-time block code,' in Proc. of the IEEE Wireless Communications and Networking Conference, 2002 (WCNC2002), pp. 505-509 
  17. Tarokh, V., Jafarkhani, H. and Calderbank, A. R. (1999), 'Space-time block codes from orthogonal designs' IEEE Trans. Inform. Theory, vol. 45, pp. 1456-1467 
  18. Tarokh, V. and Jafarkhani, H.(2000), 'A differential detection scheme for transmit diversity,' IEEE J. Select. Areas Commun., vol. 18, pp. 1169-1174 

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