Symbol timing synchronization of π / 4 - DQPSK signals using polyphase filterbanks

Author

Danesfahani, Reza ; Naser-Moghaddasi, Mohammad ; Mahlouji, Mahmoud

Author_Institution

Azad Univ., Tehran

fYear

2007

fDate

9-12 Sept. 2007

Firstpage

882

Lastpage

887

Abstract

In this paper, the use of a polyphase filterbank with the Gardner timing error detection (TED) algorithm for symbol timing synchronization of the π / 4-shifted differentially encoded quadrature phase shift keying (π / 4-DQPSK) modulation signal is investigated. The open loop S-curve and normalized power spectral density (PSD) of the simulated baseband modem incorporating the Gardner TED are presented. Acquisition and tracking performance indicate that this algorithm can also be used with the π / 4-DQPSK modulation scheme to detect the timing error in the presence of additive white Gaussian noise (AWGN).

Keywords

AWGN; channel bank filters; modulation coding; quadrature phase shift keying; synchronisation; AWGN; DQPSK signals; Gardner timing error detection; additive white Gaussian noise; modulation signal; normalized power spectral density; open loop S-curve; polyphase filterbanks; shifted differentially encoded quadrature phase shift keying; simulated baseband modem; symbol timing synchronization; timing error; AWGN; Clocks; Filters; Frequency synchronization; Interpolation; Phase detection; Phase modulation; Quadrature phase shift keying; Signal processing algorithms; Timing; π/4-DQPSK modulation; Gardner timing error detector; polyphase filterbank; timing synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON, 2007. The International Conference on "Computer as a Tool"

Conference_Location

Warsaw

Print_ISBN

978-1-4244-0812-2

Electronic_ISBN

978-1-4244-0813-9

Type

conf

DOI

10.1109/EURCON.2007.4400284

Filename

4400284