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TTCM schemes based on time-varying trellis approach

TTCM schemes based on time-varying trellis approach

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An efficient time-varying trellis approach is proposed for turbo trellis coded modulation (TTCM). Using a time-varying trellis, the efficient free Euclidean distance is increased, thus improving the performance of TTCM. Experimental results show that the bit error rate (BER) of the proposed time-varying TTCM is better than that of the conventional TTCM scheme. Also, compared with an eight-state time-invariant TTCM scheme, a two-state time-varying TTCM scheme can achieve nearly the same BER performance.

References

    1. 1)
      • Blackert, W., Wilson, S.: `Turbo trellis coded modulation', Proc. CISS'96, 1996, Princeton, NJ, USA.
    2. 2)
      • B. Vucetic , J. Yuan . (2000) Turbo codes: principles and applications.
    3. 3)
    4. 4)
    5. 5)
      • E. Biglieri . (1991) Introduction to trellis-coded modulation with applications.
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