Differential detection with IIR filter for improving DPSK detection performance

Author

Hamamoto, Naokazu

Author_Institution

Commun. Res. Lab., Minist. of Posts & Telecommun., Tokyo, Japan

Volume

44

Issue

8

fYear

1996

fDate

8/1/1996 12:00:00 AM

Firstpage

959

Lastpage

966

Abstract

This paper presents a method for improving the performance of differential detection of differentially encoded phase shift keying (DPSK). The structure of the proposed detection scheme consists of a conventional differential detection circuit equipped with an infinite impulse response (IIR) filter combined with decision feedback. The results of theoretical analysis and computer simulation show that performance of the proposed detection method can approach that of coherent detection of DPSK under additive white Gaussian noise (AWGN) conditions without any increase in architectural complexity. Furthermore, a parameter of the proposed detector can be varied to optimize performance for static or fading conditions. An adaptive scheme suitable for time varying Rician-fading channel conditions is presented, and performance results obtained by computer simulation are given

Keywords

Gaussian noise; IIR filters; Rician channels; adaptive signal detection; differential phase shift keying; fading; time-varying channels; white noise; AWGN; DPSK detection performance; IIR filter; adaptive scheme; additive white Gaussian noise; computer simulation; decision feedback; differential detection; differentially encoded phase shift keying; fading conditions; infinite impulse response filter; static conditions; time varying Rician-fading channel; AWGN; Additive white noise; Computer simulation; Detectors; Differential quadrature phase shift keying; Feedback circuits; IIR filters; Performance analysis; Phase detection; Phase shift keying;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.535436

Filename

535436