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 and Signal Processing
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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 channel impulse response coding gain constellation crosstalk data symbols dBm/Hz decoder Digital Subscriber Lines DSL system DSL transceiver echo canceller equalizer coefficient equivalent circuit error rate FEXT filter coefficients fractionally spaced frequency HDSL hybrid circuit IEEE implementation impulse noise impulse response in-phase input impedance interface ISDN kbps line code loop plant loss lowpass filter matrix Mbps mile noise level noise power density output parity check passband phase polynomial quadrature received signal receiver front-end noise shaping filter shows signal level signal-to-noise ratio simplified channel models telephone subscriber loop transceiver transformer transmission throughput transmit power transmit signal Trellis code twisted pairs twisted-pair cable twisted-pair telephone loop two-port network VDSL vector voice band voice channel voltage