Title :
Reduced state Viterbi differential phase detection of MDPSK signals
Author_Institution :
R&D Dept., NTT Mobile Commun. Network Inc., Kanagawa, Japan
fDate :
3/14/1996 12:00:00 AM
Abstract :
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
Keywords :
Gaussian noise; Viterbi detection; differential phase shift keying; white noise; 4DPSK transmission; M-ary differential phase shift keying; MDPSK signals; RSVDPD; additive white Gaussian noise channels; bit error rate; branch metric; computer simulation; constellation points; reduced state Viterbi differential phase detection; trellis states;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960365
