Patent ID: 8194761

Claim:
A method of calculating an estimated sampling frequency offset (ε s ) in a digital radio mondiale (DRM) system, comprising: using a relationship between a first pilot (P m and P m-cycle ) received in a symbol (m and m-cycle) and a second pilot (P trm and P trm-cycle and transmitted in the symbol (m and m-cycle) to calculate the estimated sampling frequency offset (ε s ), wherein the relationship is given by: ɛ s = linearfit ⁡ ( angle ⁡ ( P m P tr m P m ⁢ - ⁢ cycle P trm ⁢ - ⁢ cycle ) , l ) × N 2 ⁢ π × cycle × ( N + L ) wherein the P m is the pilot received in the m th symbol and P trm is the pilot transmitted in the m th symbol, the P m-cycle is the pilot received in (m-cycle) th symbol, the P trm-cycle is the pilot transmitted in (m-cycle) th symbol, the 1 is the index of the sub-carrier associated with the pilot, the N is a factor of a sample point number of a useful symbol, the L is a sample point number of a guard interval, and the cycle is the interval of two symbols in which the pilots are inserted at the same index of the sub-carriers (I).