Title :
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
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;
Conference_Titel :
Power Line Communications and Its Applications (ISPLC), 2012 16th IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-0359-0
Electronic_ISBN :
PENDING
DOI :
10.1109/ISPLC.2012.6201341
