Title :
DWDM-based FTTC access network
Author :
Park, Soo-Jin ; Kim, Sangin ; Song, Kil-Ho ; Lee, Jong-Rak
Author_Institution :
Access Network Lab., Korea Telecom, Daejeon, South Korea
fDate :
12/1/2001 12:00:00 AM
Abstract :
This paper proposes a dense wavelength division multiplexing (DWDM)-based fiber-to-the-curb (FTTC) access network architecture for broad-band services. The reaches of four carrierless amplitude phase (4-CAP)-modulated very high-speed digital subscriber line (VDSL) signals over the hybrid-fiber twisted pair (HFTP) were simulated. The simulation results show that the effect of noise from the optical link is negligible as long as the signal-to-noise ratio (SNR) of the optical link output signal is 9-10 dB greater than the required SNR of a VDSL modem. The bit error rate (BER) of the VDSL transmission over HFTP was measured. Measurement results show that insertion of the optical link between the modem and twisted pair has no adverse effect on the transmission
Keywords :
broadband networks; digital subscriber lines; optical fibre subscriber loops; optical noise; wavelength division multiplexing; DWDM-based FTTC access network; DWDM-based fiber-to-the-curb access network architecture; VDSL modem; VDSL transmission; broad-band services; carrierless amplitude phase; dense wavelength division multiplexing; digital subscriber line signals; hybrid-fiber twisted pair; optical link; optical link output signal; signal-to-noise ratio; Costs; DSL; High speed optical techniques; Modems; Optical fiber communication; Optical filters; Optical modulation; Optical network units; Signal to noise ratio; Wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
