Summary
International Symposium on Electromagnetic Compatibility
2009
Session Number:23P3
Session:
Number:23P3-2
Investigation on the Influence on VDSL Transmission Speed and Radiated Electric Field Strength Due to Unbalance in Metallic Communication Lines
Y. Okugawa,
pp.641-644
Publication Date:2009/7/20
Online ISSN:2188-5079
Summary:
VDSL can provide low-cost broadband services by transmitting high frequency signals using existing metallic communication lines. However, because metallic communication lines were not originally installed with the intention of transmitting high-frequency signals, they may suffer from unbalance, which can affect the VDSL transmission speed and radiated electric field strength. In this paper, we report on an investigation into the influence of the Longitudinal Conversion Loss (LCL) of metallic communication lines on the VDSL transmission speed and radiated electric field strength. The results show that the degradation of the LCL caused by the capacitance between a communication line and the earth does not cause a reduction in the transmission rate. However, the electric field strength was increased by up to about 37 dB. In the case of inductance, the increase in the LCL caused by the inductance of a communication line caused both a reduction in transmission speed and an increase in radiated electric field strength of up to about 42 dB.