Patent ID: 8761276
Filing Date: 2014-06-24
Classification: H04B,H04J,H04L

Abstract:
1. A method for packing data for power line communication comprising: a) packing said data into symbol body; b) adding a first pad in front of said symbol body to form a full symbol; c) determining the time instance in which the peak absolute voltage point of the alternating current (AC) electric voltage occurs along a power line through which said data is to be transmitted; and d) sending said full symbol through said power line in a manner synchronized with said time instance wherein said first pad covers said time instance; wherein said first pad further comprises an initial pad and a pre-pad; wherein said adding step further comprises appending a post-pad behind said symbol body in said full symbol; and wherein said symbol body is an orthogonal frequency division multiplexing (OFDM) symbol body; said pre-pad duplicating the second half of said OFDM symbol body; said post-pad duplicating the first half of said OFDM symbol body, and said initial pad covers said time instance and is a cyclic prefix (CP) of said OFDM symbol body.