Patent ID: 7675977

Claim:
A method for processing a signal using pilot based coding (PBC), the method comprising: obtaining, by a data coding apparatus, data coding identification information which identifies a data coding scheme from among at least a pilot coding scheme and a differential coding scheme, wherein the differential coding scheme comprises at least one of a frequency differential coding scheme and a time differential coding scheme; and decoding data elements of a current group included in a current frame according to the data coding scheme identified by the data coding identification information, using a pilot reference value and one or more pilot difference values which are generated using the data elements and the pilot reference value, wherein: the pilot reference value is dependent on each of the data elements of the current group, and is not dependent on the data elements of an other frame, a quantity of the pilot difference values is equal to a quantity of the data elements of the current group, the pilot reference value is a single value which applies to all of the data elements of the current group, and each pilot difference value corresponds to each data element of the current group.