Hybrid wireless wire-line network integration and management
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United States of America Patent
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-
Feb 1, 2000
Issued Date -
N/A
app pub date -
Oct 31, 1996
filing date -
May 9, 1996
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A modem that operates selectively in the voice-band frequency band and at higher frequency bands is provided. This modem supports multiple line codes, like DMT and CAP. The modem uses a Digital Signal Processor (DSP), so that different existing ADSL line codes, such as Discrete MultiTone (DMT) and Carrierless AM/PM (CAP), can be implemented on the same hardware platform. The modem negotiates in real-time, for a desired line transmission rate to accommodate line condition and service-cost requirement. The line code and rate negotiation process may be implemented at the beginning of each communication session through the exchange of tones between the modems. A four-step MDSL modem initialization process is provided for line code and rate compatibility.
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