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Low complexity bit by bit soft output demodulator

Low complexity bit by bit soft output demodulator

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A suboptimum bit by bit soft output demodulation algorithm for higher order modulation schemes is presented. It offers major computational reductions compared to the optimum algorithm, yet gives performance close to that of the optimum when used in conjunction with a convolutional code.

References

    1. 1)
      • J.G. Proakis . (1995) Digital communications.
    2. 2)
      • G.C. Clark , J.B. Cain . (1981) Error-correction coding for digital communications.
    3. 3)
      • Le Goff, S., Glavieux, A., Berrou, C.: `Turbo-codes and high spectral efficiency modulation', Proc. ICC'94, May 1994, p. 645–649.
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