Channel phase distortion and its influence on PLC systems

Author

Liu, Wenqing ; Sigle, Martin ; Dostert, Klaus

Author_Institution

Inst. of Ind. Inf. Technol., Karlsruhe Inst. of Technol., Karlsruhe, Germany

fYear

2012

fDate

27-30 March 2012

Firstpage

268

Lastpage

273

Abstract

Phase response is an important part of channel characteristics. However, its behavior and its influence on communication systems have not been well investigated for narrowband powerline communications (NB-PLC). This paper reveals time-variant and frequency-selective phase distortions for frequency range below 500 kHz. The influence of the phase response on preamble-based synchronization and on correlation-based modulations is investigated. Four different phase distortion profiles are emulated and used to evaluate a differential code shift keying (DCSK)-based PLC system. Evaluation results show that noise margins can be reduced by non-linear phase distortions. The influence of channel phase distortions should also be considered in design and implementation of PLC systems.

Keywords

carrier transmission on power lines; modulation; time-varying channels; DCSK; NB-PLC system; channel phase distortion; correlation-based modulation; differential code shift keying; frequency-selective phase distortion; narrowband powerline communication system; noise margin; nonlinear phase distortion; preamble-based synchronization; time-variant phase distortion; Correlation; Delay; Frequency measurement; Noise; Phase distortion; Pollution measurement; Receivers; Channel Phase Response; DCSK; Group delay; PLC; Performance Testing; Phase distortion;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Line Communications and Its Applications (ISPLC), 2012 16th IEEE International Symposium on

Conference_Location

Beijing

ISSN

PENDING

Print_ISBN

978-1-4673-0359-0

Electronic_ISBN

PENDING

Type

conf

DOI

10.1109/ISPLC.2012.6201341

Filename

6201341