Method and Receiver in a Wireless Communication System

Abstract

A receiver and method applied to the receiver, for estimating a normalized frequency offset value ε between a transmitter and the receiver in a wireless communication system, based on Orthogonal Frequency Division Multiplexing (OFDM), where the method includes receiving a first pilot signal (yr1) and a second pilot signal (yr2), from the transmitter, determining a correlation model to be applied based on correlation among involved sub-carrier channels at the yr1 and the yr2, computing three complex values μ−1, μ0, and μ1, by a complex extension of a log-likelihood function (λ(ε)), based on the determined correlation model, and estimating the ε by finding a maximum value of a Karhunen-Loeve approximation of the λ(ε), based on the computed three complex values μ−1, μ0, and μ1.

Dependencies are inferred from the claim text.