DSL: Simulation Techniques and Standards Development for Digital Subscriber Line Systems
The next generation in modem technology is explored. ADSL is the next wave in communications technology designed to provide very high speeds over regular telephone lines. Far surpassing current modems and leaving ISDN in its wake, ADSL is designed to become the first real solution to high speed networking and communications backups.
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Fundamentals Transmission Environment
TELEPHONE SUBSCRIBER LOOP ENVIRONMENT
9 other sections not shown
26-Gauge Loop 26-gauge twisted-pair loop ABCD parameters ADSL analog bandwidth baseband baud rate Bellcore bridged taps bytes carrier channel capacity channel equalizer coding gain constellation crosstalk data symbols dBm/Hz decoder Digital Subscriber Lines downstream DSL system DSL transceiver echo canceller echo path equalizer coefficient error rate feedback FEXT filter coefficients fractionally spaced frame frequency HDSL hybrid circuit IEEE implementation impulse noise impulse response in-phase input impedance interface interleave ISDN kbps line code linear loop plant loss lowpass filter matrix Mbps mile Modulation noise level noise power density output parity check passband performance margin phase polynomial received signal receiver front-end noise shaping filter SHDSL shows signal level signal-to-noise ratio spectrum telephone subscriber loop transceiver transfer function transformer transmission throughput transmit power transmit signal Trellis code twisted pairs twisted-pair cable twisted-pair telephone loop two-port network VDSL vector voice channel voltage