WIRED COMMUNICATIONS SYSTEMS WITH IMPROVED CAPACITY AND SECURITY

摘要

Provided are methods and systems of using division-free duplexing (DFD) in a cable communication network. Techniques for applying DFD in a cable communication network may enable data to be transmitted and received over a coaxial cable without using division duplexing techniques. For example, the cable communication network may include DFD enabled network nodes and each subscriber to the cable network may be equipped with a DFD system configured to operate in a DFD mode. In some embodiments, oppositely propagating signals may be transmitted over one frequency channel, and DFD techniques may be used to recover originally transmitted signals. Further, in some embodiments, DFD techniques may be used with encryption methods to increase the security of data transmitted in the cable communication network.

主权项

1. A method comprising:
transmitting first data comprising a cryptovariable in a first direction from a first device to a second device over a cable in a cable communication network; receiving the first data comprising the cryptovariable at a second device; transmitting second data from the second device over the cable in a second direction, using a division-free duplexing (DFD) technique, and wherein transmitting the second data from the second device comprises transmitting broadband noise from the second device while the first device transmits the cryptovariable to the second device; and removing the broadband noise from the first data received at the second device using the DFD techniques to recover the cryptovariable.