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Reduced state Viterbi differential phase detection of MDPSK signals

Reduced state Viterbi differential phase detection of MDPSK signals

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© IEE
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An improved differential phase detection scheme that uses a reduced state Viterbi algorithm (RSVDPD) is proposed for the reception of M-ary differential phase shift keying (MDPSK) signals. The transmitted sequence is estimated from the received signal phases only. The number of trellis states equals that of the signal constellation points M. The branch metric is computed by tracing back the surviving path connected to each state. The bit error rate (BER) performance with RSVDPD is evaluated using computer simulation for 4DPSK transmission in additive white Gaussian noise (AWGN) channels.

Inspec keywords: white noise; Gaussian noise; Viterbi detection; differential phase shift keying

Other keywords: 4DPSK transmission; M-ary differential phase shift keying; branch metric; RSVDPD; additive white Gaussian noise channels; computer simulation; constellation points; reduced state Viterbi differential phase detection; bit error rate; MDPSK signals; trellis states

Subjects: Modulation and coding methods; Signal processing and detection

References

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      • A. Deul-Hallen , C. Heegard . Delayed decision-feedback sequence estimation. IEEE Trans. Commun. , 428 - 436
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      • F. Adachi . MLSE differential phase detection for M-ary DPSK. IEE Proc. Commun. , 407 - 412
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      • D. Divsalar , M. K. Simon . Multiple-symbol differential detection of MPSK. IEEE Trans.Commun. , 300 - 308
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      • D. Makrakis , K. Feher . Optimal noncoherent detection of PSK signals. Electron. Lett. , 398 - 400
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19960365
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