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Efficient algorithm for decoding layered space-time codes

Efficient algorithm for decoding layered space-time codes

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Layered space-time codes have been designed to exploit the capacity advantage of multiple antenna systems in Rayleigh fading environments. A new efficient decoding algorithm based on QR decomposition is presented, which requires only a fraction of computational effort compared to the standard decoding algorithm requiring the multiple calculation of the pseudo inverse of the channel matrix.

Inspec keywords: decoding; Rayleigh channels; channel coding; transmitting antennas; matrix decomposition

Other keywords: layered space-time codes; Gram-Schmidt algorithm; Rayleigh fading environments; decoding algorithm; multiple antenna systems; QR decomposition

Subjects: Linear algebra (numerical analysis); Algebra; Codes

References

    1. 1)
      • Wolniansky, P.W., Foschini, G.J., Golden, G.D., Valenzuela, R.A.: `V-BLAST: an architecture for realizing very high data rates over therich-scattering wireless channel', IEEE Proc. ISSSE-98, September 1998, Pisa, Italy.
    2. 2)
      • G.J. Foschini . Layered space-time architecture for wireless communication in a fadingenvironment when using multiple antennas. Bell Labs Tech. J. , 2 , 41 - 59
    3. 3)
      • Shiu, D., Kahn, J.M.: `Layered space-time codes for wireless communications using multiple transmitantennas', IEEE Proc. Int. Conf. Communications (ICC'99), June 1999, Vancouver, B.C., Canada.
    4. 4)
      • G.J. Foschini , G.D. Golden , A. Valenzuela , P.W. Wolniansky . Simplified processing for high spectral efficiency wireless communicationsemploying multi-element arrays. IEEE J. Sel. Areas Communun. , 11 , 1841 - 1852
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