On Differential Detection of M-ary DPSK with Intersymbol Interference and Noise Correlation

In this paper we study differential detection of M -ary differential phase-shift-keyed (DPSK) signals with intersymbol interference and noise correlation. With these impairments there can be a wide variation in the error rate of the individual symbols, with this variation increasing with M . However, by adding a phase shift offset and adjusting the decision boundaries in the detector, this variation can be reduced and the average symbol error rate can be decreased. For example, for quaternary DPSK with a signal to adjacent (from the previous and next symbols) intersymbol interference power ratio of 17 dB, these methods can reduce the variation in symbol error rates by more than two orders of magnitude and decrease the required signal-to-thermal noise ratio for a 10-6symbol error rate by more than 2 dB.

[1]  M. Celebiler,et al.  Performance Analysis of DPSK Systems in Both Thermal Noise and Intersymbol Interference , 1971 .

[2]  Vasant K. Prabhu,et al.  Performance of coherent phase-shift-keyed systems with intersymbol interference , 1971, IEEE Trans. Inf. Theory.

[3]  Jack H. Winters.  Differential Detection with Intersymbol Interference and Frequency Uncertainty , 1984, IEEE Trans. Commun..

[4]  W. Hubbard.  The effect of intersymbol interference on error rate in binary differentially-coherent phase-shift-keyed systems , 1967 .

[5]  V. K. Prabhu,et al.  On the performance of phase-shift-keying systems , 1981, The Bell System Technical Journal.

[6]  R. Pawula,et al.  The Effects of Noise Correlation and Power Imbalance on Terrestrial and Satellite DPSK Channels , 1983, IEEE Trans. Commun..

[7]  Robert F. Pawula.  On M-ary DPSK Transmission Over Terrestrial and Satellite Channels , 1984, IEEE Trans. Commun..

[8]  Jhong S. Lee,et al.  Correction to 'Error Performance of Differentially Coherent Detection of Binary DPSK Data Transmission on the Hard-Limiting satellite Channel' , 1981, IEEE Trans. Inf. Theory.

[9]  R. F. Pawula.  Offset DPSK and a Comparison of Conventional and Symmetric DPSK with Noise Correlation and Power Imbalance , 1983, MILCOM 1983 - IEEE Military Communications Conference.

[10]  B. T. Tan,et al.  On Binary DPSK Error Rates Due to Noise and Intersymbol Interference , 1983, IEEE Trans. Commun..

[11]  Jhong Lee,et al.  On the Binary DPSK Communication Systems in Correlated Gaussian Noise , 1975, IEEE Trans. Commun..