TY - GEN
T1 - Demodulation of CPM signals using piecewise polynomial-phase modeling
AU - Barbarossa, S.
AU - Scaglione, A.
PY - 1998
Y1 - 1998
N2 - We propose a novel approach for demodulating continuous phase modulation (CPM) signals based on the modeling of the instantaneous phase as a piecewise polynomial-phase function. The polynomial modeling can be a good approximation for currently used modulations or it can be exact if the shaping pulse is chosen to be a piecewise polynomial function. The crucial step in the demodulation process is then the estimation of the polynomial coefficients, which is carried out using the so called product high order ambiguity function (PHAF). The proposed approach is suboptimal with respect to the optimal maximum likelihood sequence estimation (MLSE) method, but is much simpler to implement and offers important advantages such as independence of initial phase, tolerance to Doppler shift, and time-offset, blind channel identification. We show theoretical results concerning the minimum distance among sequences, which leads to a lower bound on the error probability, together with some simulation results.
AB - We propose a novel approach for demodulating continuous phase modulation (CPM) signals based on the modeling of the instantaneous phase as a piecewise polynomial-phase function. The polynomial modeling can be a good approximation for currently used modulations or it can be exact if the shaping pulse is chosen to be a piecewise polynomial function. The crucial step in the demodulation process is then the estimation of the polynomial coefficients, which is carried out using the so called product high order ambiguity function (PHAF). The proposed approach is suboptimal with respect to the optimal maximum likelihood sequence estimation (MLSE) method, but is much simpler to implement and offers important advantages such as independence of initial phase, tolerance to Doppler shift, and time-offset, blind channel identification. We show theoretical results concerning the minimum distance among sequences, which leads to a lower bound on the error probability, together with some simulation results.
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U2 - 10.1109/ICASSP.1998.679565
DO - 10.1109/ICASSP.1998.679565
M3 - Conference contribution
AN - SCOPUS:0031642308
SN - 0780344286
SN - 9780780344280
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 3281
EP - 3284
BT - Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998
T2 - 1998 23rd IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998
Y2 - 12 May 1998 through 15 May 1998
ER -