Title :
Optimal channel capacity analysis for DMT VDSL system of various symbol rates
Author :
Lin, Sun-ting ; Wei, Che-Ho
Author_Institution :
Telecommun. Labs., Chunghwa Telecom Co. Ltd, Taiwan
Abstract :
In a DMT (discrete multitone) system, when the sampling rate is raised to increase the data transmission rate, the sub-channel spacing grows with the same ratio if the identical FFT is used. The sub-channel flatness and capacity for VDSL test loops are calculated, and the performance of various symbol rates, from 4 kHz to 20 kHz, are also analyzed to find the optimal solution of a DMT VDSL system
Keywords :
channel capacity; digital subscriber lines; fast Fourier transforms; quadrature amplitude modulation; signal sampling; twisted pair cables; DMT VDSL system; FFT; QAM signal; channel capacity; data transmission rate; discrete multitone system; sampling rate; sub-channel spacing; symbol rates; Amplitude modulation; Channel capacity; DSL; Frequency; OFDM modulation; Quadrature amplitude modulation; Sampling methods; System testing; Telephony; Topology;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.965145
