Patent ID: 7916713

Claim:
A method of a receiver detecting a start symbol of a second zone in a frame, wherein the frame comprises at least one of a preamble symbol, a first zone and the second zone, the method comprising: the receiver deriving at least one of, at least one symbol index corresponding to at least one symbol of the second zone and at least one code corresponding to the at least one symbol index, the at least one symbol belonging to a plurality of symbols in the second zone of at least one first frame, the at least one code corresponding to at least one pilot sub-carrier of the at least one symbol; the receiver establishing a set of possible start symbol indices based on the at least one symbol index; the receiver receiving a second frame, the second frame comprising at least one of the preamble symbol, the first zone and the second zone; and determining a start symbol index of the second zone of the second frame based on the at least one code and the set of possible start symbol indices.