06275990 is referenced by 247 patents and cites 27 patents.

A bidirectional multipoint-to-point communications system for sending payload information over a distribution network is provided. The system includes a head-end terminal coupled to the distribution network to a plurality of service units. The head-end terminal includes a head-end controller for sending payload data to and from an external communications network and for producing and processing control messages at the head-end terminal, a head-end multicarrier transmitting modem coupled to the head-end controller for modulating downstream payload information and downstream control messages onto multiple orthogonal carriers spread throughout substantially all of a first frequency band, and a head-end multicarrier receiving modem coupled to the head-end controller for demodulating multiple orthogonal carriers spread throughout substantially all of a second frequency band and carrying upstream payload information and control messages. Each of the service units receives the downstream control messages and downstream payload information over only a portion of the first frequency band, and each of the service units transmitting only a portion of the upstream control messages and upstream payload information. Each of the service units includes a service-unit controller, a service-unit multicarrier receiving modem, and a service-unit multicarrier transmitting modem.

Title
Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith
Application Number
9/396137
Publication Number
6275990 (B1)
Application Date
September 15, 1999
Publication Date
August 14, 2001
Inventor
Michael J Geile
Loveland
OH, US
Mark J Dapper
Cincinnati
OH, US
Agent
Fogg Slifer & Polglaze PA
US
Assignee
ADC Telecommunications
MN, US
IPC
H04N 7/10
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