Patent ID: 8675788

Claim:
A method of estimating frequency offset of a received signal in a terminal apparatus operating in a wireless communication system, the method comprising: a) determining a phase change between a first and a second reference symbol of the received signal, wherein a time distance t between the first and the second reference symbols is associated with an observation frequency f such that f=1/t; b) determining a preliminary frequency offset Δf based on the determined phase change, wherein the preliminary frequency offset Δf forms a frequency offset hypothesis Δf h ; c) decoding at least a part of the received signal with application of the frequency offset hypothesis Δf h , to a decoded signal; d) determining whether the decoded signal is a successful decoding, if the decoded signal is a successful decoding, determining the frequency offset hypothesis Δf h to be the estimated frequency offset, and if the decoded signal is not a successful decoding: adjusting the frequency offset hypothesis Δf h by an integer n times the observation frequency f such that Δf h =Δf+n·f, where nε[+/−1, 2, 3, . . . ], and repeating steps c) and d).