Patent ID: 6938192

Claim:
A method for increasing reliability of data packet transmission against impulsive noise in powerline communication systems, comprising the steps of: (a) constructing a data packet by a first node; (b) modulating a first copy of the data packet on a first frequency and a second copy of the data packet on a second frequency; (c) transmitting the modulated first and second copies of the data packet on a powerline, wherein the modulated second copy of the data packet is shifted in time by at least one bit from the modulated first copy of the data packet; (d) receiving the modulated first and second copies of the data packet by a second node; (e) demodulating the first and second copies of the data packet; and (f) comparing the demodulating first and second copies of the data packet to determine if any bits of the first or second copies of the data packet was destroyed in transmission, wherein the comparing comprises: (f1) performing a bit-by-bit comparison of the first and second copies of the data packet, and (f2) determining if at least one bit of the first and second copies of the data packet is mismatched.