Patent ID: 7752053

Claim:
A method for processing a signal, the method comprising: obtaining, by a data coding apparatus, entropy decoded data representing two or more data elements; obtaining data grouping information indicating that the two or more data elements are bound in a frequency direction or a time direction; obtaining time grouping information and frequency grouping information for identifying a group of data elements including the two or more data elements; obtaining a pilot reference value and one or more pilot difference values, associated with the identified group of data elements; and obtaining data elements of the identified group using the pilot reference value and the pilot difference values, wherein: the pilot reference value is dependent on the data elements of the identified group, and is not dependent on data elements of an other group, a quantity of the pilot difference values is equal to a quantity of the data elements of the identified group, the pilot reference value is a single value which applies to all of the data elements of the identified group, and each pilot difference value corresponds to each data element of the identified group.