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Viterbi decoder without carrier recovery

Viterbi decoder without carrier recovery

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A novel Viterbi algorithm of low complexity without carrier recovery is proposed. The most important modification is that the decision metric for surviving paths is not the cumulated variable but its amplitude. Simulation results of its application to MDPSK and convolutional code show negligible performance loss.

Inspec keywords: convolutional codes; differential phase shift keying; Viterbi decoding

Other keywords: Viterbi decoder; surviving paths; algorithm complexity; MDPSK; decision metric; convolutional code

Subjects: Codes

References

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      • D. Makrakis , A. Yongacoglu . Novel receiver structures forsystems using differential detection. IEEE Trans. , 2 , 71 - 77
    2. 2)
      • F. Adachi . Reduced state Viterbi differential phase detectionof MDPSK signals. Electron. Lett. , 6 , 527 - 529
    3. 3)
      • D. Divsalar , M.K. Simon . Multiple-symbol differential detection of MPSK. IEEE Trans. Commun. , 3 , 300 - 308
    4. 4)
      • F. Adachi . MLSE differential phase detection for M-aryDPSK. IEE Proc. Commun. , 6 , 407 - 412
    5. 5)
      • D. Makrakis , K. Feher . Optimal noncoherent detection of PSK signals. Electron. Lett. , 6 , 398 - 400
    6. 6)
      • F. Adachi . Reduced state transition Viterbi differentialdetection of M-ary DPSK signals. Electron. Lett. , 12 , 1064 - 1066
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19961460
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