Decision Feedback Differential Phase Detection of M-ary DPSK Signals

Fumiyuki Adachi; Mamoru Sawahashi

doi:10.1109/25.385910

Decision Feedback Differential Phase Detection of M-ary DPSK Signals

Fumiyuki Adachi, Mamoru Sawahashi

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Multiple-symbol differential phase detection (DF-DPD) based on decision feedback of past detected symbols is presented for M-ary DPSK modulation. Adopting a Gaussian phase noise assumption, we obtain the a posteriori joint probability density function (pdf) of the outputs of L DPD detectors of orders of 1 to L symbols and derive a DF-DPD algorithm which is based on feeding back the L—1 past detected symbols and minimizing the sum of phase errors of L DPD detectors. A practical implementation of the DF-DPD receiver is presented that uses a single conventional (one-symbol) DPD detector. The bit error rate (BER) performance in an additive white Gaussian noise (AWGN) channel is analyzed taking into account decision error propagation. Performance improvements are evaluated by computer simulations in AWGN and Rayleigh fading channels.

Original language	English
Pages (from-to)	203-210
Number of pages	8
Journal	IEEE Transactions on Vehicular Technology
Volume	44
Issue number	2
DOIs	https://doi.org/10.1109/25.385910
Publication status	Published - 1995 May
Externally published	Yes

ASJC Scopus subject areas

Automotive Engineering
Aerospace Engineering
Electrical and Electronic Engineering
Applied Mathematics

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abstract = "Multiple-symbol differential phase detection (DF-DPD) based on decision feedback of past detected symbols is presented for M-ary DPSK modulation. Adopting a Gaussian phase noise assumption, we obtain the a posteriori joint probability density function (pdf) of the outputs of L DPD detectors of orders of 1 to L symbols and derive a DF-DPD algorithm which is based on feeding back the L—1 past detected symbols and minimizing the sum of phase errors of L DPD detectors. A practical implementation of the DF-DPD receiver is presented that uses a single conventional (one-symbol) DPD detector. The bit error rate (BER) performance in an additive white Gaussian noise (AWGN) channel is analyzed taking into account decision error propagation. Performance improvements are evaluated by computer simulations in AWGN and Rayleigh fading channels.",

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AU - Adachi, Fumiyuki

AU - Sawahashi, Mamoru

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AB - Multiple-symbol differential phase detection (DF-DPD) based on decision feedback of past detected symbols is presented for M-ary DPSK modulation. Adopting a Gaussian phase noise assumption, we obtain the a posteriori joint probability density function (pdf) of the outputs of L DPD detectors of orders of 1 to L symbols and derive a DF-DPD algorithm which is based on feeding back the L—1 past detected symbols and minimizing the sum of phase errors of L DPD detectors. A practical implementation of the DF-DPD receiver is presented that uses a single conventional (one-symbol) DPD detector. The bit error rate (BER) performance in an additive white Gaussian noise (AWGN) channel is analyzed taking into account decision error propagation. Performance improvements are evaluated by computer simulations in AWGN and Rayleigh fading channels.

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