Improving differential detection of MDPSK by noise prediction

Author

Schober, Robert ; Gerstacker, Wolfgang H. ; Huber, Johannes B.

Author_Institution

Lehrstuhl fur Nachrichtentech., Erlangen-Nurnberg Univ., Germany

Volume

1

fYear

1998

fDate

1998

Firstpage

567

Abstract

A new technique is proposed to improve the performance of differential detection of MDPSK (M-ary differential phase-shift keying) significantly by reducing the noise in the decision variable by means of noise prediction. A nonlinear time-variant FIR or IIR structure is used for the prediction-error filter. For both filter structures the optimum filter coefficients are derived, assuming transmission over an additive white Gaussian noise (AWGN) channel. For the IIR structure a setting for the filter coefficient exists which yields a high performance for both AWGN and flat fading (Rayleigh and Rician) channels. Moreover, a simple decision rule is derived for the IIR structure which allows an implementation with very low computational complexity

Keywords

AWGN channels; FIR filters; IIR filters; Rayleigh channels; Rician channels; computational complexity; decision theory; differential detection; differential phase shift keying; filtering theory; prediction theory; AWGN channel; M-ary differential phase-shift keying; MDPSK; Rayleigh channel; Rician channel; additive white Gaussian noise channel; decision rule; decision variable; differential detection; filter structures; flat fading channels; high performance; low computational complexity; noise prediction; noise reduction; nonlinear time-variant FIR filter; nonlinear time-variant IIR filter; optimum filter coefficients; prediction-error filter; AWGN; Additive white noise; Differential phase shift keying; Finite impulse response filter; Gaussian noise; IIR filters; Noise reduction; Phase detection; Phase noise; Rayleigh channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE

Conference_Location

Sydney,NSW

Print_ISBN

0-7803-4984-9

Type

conf

DOI

10.1109/GLOCOM.1998.775791

Filename

775791