Title :
The range of HDSLs and ADSLs in NTT´s local networks
Author_Institution :
NTT Transmission Syst. Labs., Yokosuka, Japan
Abstract :
This coverage of scheme candidates given the environment of NTT´s local networks. The bit rate of HDSL is bidirectional 768 kbit/s per pair. The bit rates for the downstream ADSL channel are 1.6-9.2 Mbit/s. ADSL signals are transceived over either POTS or burst-mode BRA signal. Crosstalk characteristics for several ranks of line conditioning are shown in consideration of cable pair-binding structure. Intersystem crosstalk interference with burst-mode BRA is also considered. It is shown HDSL with 2B1QPAM and ADSL with 16-QAM over BRA yield the better performance than the other candidates
Keywords :
crosstalk; subscriber loops; twisted pair cables; 1.6 to 9.2 Mbit/s; 16-QAM; 2B1QPAM; 768 kbit/s; ADSL signals; HDSL; NTT; POTS; bit rate; burst-mode BRA signal; cable pair-binding structure; crosstalk; downstream ADSL channel; intersystem crosstalk interference; line conditioning; local networks; performance; Bit rate; Cable insulation; Conductors; Crosstalk; DSL; Intelligent networks; Interference; Power cable insulation; Power cables; Telecommunication services;
Conference_Titel :
Communications, 1994. ICC '94, SUPERCOMM/ICC '94, Conference Record, 'Serving Humanity Through Communications.' IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-1825-0
DOI :
10.1109/ICC.1994.368864
