Patent ID: 8542759

Claim:
A method for transmitting a signal between a transmitter and a receiver over a channel of a Power Line Network (PLN), wherein said signal is orthogonal frequency division multiplex (OFDM) modulated on a set of sub-carriers, and said PLN includes at least phase, neutral and protective line wires so that said PLN establishes multiple wired transmission paths, the method comprising: determining OFDM tonemap information and eigenbeamforming encoding information both based on a channel estimation for each sub-carrier; grouping eigenbeamforming encoding information of neighboring sub-carriers; generating an eigenbeamforming feedback signal, which is descriptive of said grouped eigenbeamforming encoding information; generating a tonemap feedback signal, which is descriptive of said OFDM tonemap information; and transmitting, over said PLN, information based on said eigenbeamforming feedback signal and said tonemap feedback signal from said receiver to said transmitter.