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Comparison of DS-CDMA and MC-CDMA techniques for dual-dispersive fading acoustic communication networks

Comparison of DS-CDMA and MC-CDMA techniques for dual-dispersive fading acoustic communication networks

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Recently, code division multiple access (CDMA) techniques have been utilised to achieve reliable multiuser communication in asynchronous shallow-water acoustic networks. Two different communication techniques, are considered. Both have their origins in spread spectrum principles and can offer significant benefits in such underwater environments, which are characterised by limited transmission bandwidth and are required to operate asynchronously with low signal-to-noise ratios. In direct-sequence (DS)-CDMA, spread data are transmitted at a single carrier frequency. In contrast, in multi-carrier (MC)-CDMA a set of carrier frequencies is employed to achieve frequency diversity. The proposed adaptive receiver architectures, based on the minimisation of the mean square error (MSE), integrate the functions of multi-access interference cancellation, equalisation and phase-carrier tracking. The performance of DS and MC-CDMA has been evaluated and compared under different simulation scenarios with respect to the multipath delay, Doppler broadening and number of users, indicating the effectiveness of each system in an underwater environment. Finally, analytical derivation of the BER performance of the MMSE multicarrier receiver in a Rayleigh-fading environment is presented.

References

    1. 1)
    2. 2)
    3. 3)
      • S. Haykin . (1996) Adaptive filter theory.
    4. 4)
      • Lam, W.K., Ormondroyd, R.F., Davies, J.J.: `A frequency domain adaptive coded decision feedback equalizer for a broadband UWA COFDM system', Proc., OCEANS'98, Sept. 1998, 2, p. 794–799.
    5. 5)
      • Loubet, G., Capellano, V., Filipiak, R.: `Underwater spread-spectrum communications', Proc. Oceans'97, Halifax, Canada.
    6. 6)
      • Boulanger, C., Loubet, G., Lequepeys, J.: `Spreading sequences for underwater multiple access communications', Proc. Oceans '98, Nice, France.
    7. 7)
    8. 8)
      • M. Abdulrahman , A. Sheikh , D. Falconer . Decision feedback equalization for CDMA in indoor wireless communications. IEEE J. Sel. Areas Commun. , 1 , 698 - 706
    9. 9)
      • Yee, N., Linnartz, J.P.: `Multi-carrier code division multiple access (MC-CDMA): A new spreading technique for communication over multipath channels', Final Report 1993-1994 for MICRO Project 93-1001, .
    10. 10)
      • F. Kleer , S. Hara , R. Prasad . (1999) Detection strategies and cancellation schemes in a MC-CDMA system, CDMA techniques for third generation mobile systems.
    11. 11)
      • Subramanian, L.V., Rajan, B.S., Bahl, R.: `Trellis coded modulation schemes for underwater acoustic communications', Proc. OCEANS '98, Sept. 1998, 2, p. 800–804.
    12. 12)
      • A.P. Lyons , D.A. Abraham . Statistical characterization of high frequency shallow-water seafloor backscatter. J. Acoust. Soc. Am. , 3
    13. 13)
    14. 14)
      • M. Simon , J. Omura , R. Scholtz , B. Levitt . (1994) Spread spectrum communications handbook.
    15. 15)
      • Davies, J.J., Pointer, S.A.: `UW communication system design for severely dispersed channels', Proc. OCEANS '98, Sept. 1998, 2, p. 1022–1027.
    16. 16)
      • J.G. Proakis . (1989) Digital Communications.
    17. 17)
      • Saulnier, G.J., Ye, Z., Medley, M.J.: `Performance of a spread spectrum OFDM system in a dispersive fading channel with interference', Proc., IEEE Military Communications Conf., 1998.
    18. 18)
    19. 19)
      • M. Stojanovic , J. Catipovic , J.G. Proakis . Phase coherent digital communications for underwater acoustic channels. IEEE J. Oceanic Eng. , 1 , 167 - 180
    20. 20)
    21. 21)
      • A.A. Winder . Sonar system technology. IEEE Trans. Sonics Ultrason. , 5 , 291 - 332
    22. 22)
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