Patent ID: 6246716
Filing Date: 2001-06-12
Classification: H04B,H04L,H04M

Abstract:
A method for simultaneously transmitting data at a symmetrical rate in two directions on a bidirectional medium subject to interference, the method comprising the steps of:(1) transmitting a first signal in one direction on said medium, said data modulating a first plurality of carriers thereby generating said first signal;(2) transmitting a second signal in the other direction on said medium said data modulating a second plurality of carriers thereby generating said second signal; and(3) spectrally shaping at least one passband of said generated signals prior to transmission such that the plurality of passbands of said signals are partially overlapped in such manner that performance margins due to interference caused by signals of the same kind being transmitted on said medium are greater than performance margins in a first design specification and further that interference caused by said first and second signals and said signals of the same kind does not reduce performance margins in different services being transmitted on said medium below performance margins in a second design specification.