Broadband network for coaxial cable using multi-carrier...

Details Broadband network for coaxial cable using multi-carrier... Broadband network for coaxial cable using multi-carrier...

2007-11-13

2007-11-13

Qureshi, Afsar (Department: 2616)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S208000, C370S230100, C725S127000, C375S260000

Reexamination Certificate

active

10322834

ABSTRACT:
A broadband local area data network uses coaxial cable wiring for interconnection of terminal devices. Orthogonal frequency division multiplexing (OFDM) with bit loading is used to overcome channel impairments and provide a path for terminal devices to transmit to and receive from other terminal devices. Probe messages are sent between devices to characterize the communication channel and determine optimum bit loading. The data network shares the cable spectrum with other services and uses frequency bands not used by other services. Adaptive power control can be used to maintain signal to noise ratio in a communication between terminal devices. Frequency coordination can be used to avoid interference between the LAN communications and other services transmitted on the cable.

REFERENCES:
patent: 6886181 (2005-04-01), Dodds et al.
John A.C. Bingham, “Multiccarrier Modulation for Data Transmission; An idea whose time has come”, IEEE Communication Magazine, vol. 28, No. 5, pp. 5-14, May 1990.

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