Robust frequency offset estimator for OFDM over fast varying multipath channel

TL;DR

This paper introduces a robust CFO estimation algorithm for OFDM systems that operates effectively in fast varying multipath channels by combining time-domain and frequency-domain techniques.

Contribution

The paper proposes a novel CFO estimation method that achieves high accuracy and large estimation range in rapidly changing multipath environments.

Findings

High accuracy in CFO estimation in fast varying channels

Large estimation range demonstrated

Effective in multipath scenarios

Abstract

This paper presents a robust carrier frequency offset(CFO) estimation algorithm suitable for fast varying multipath channels. The proposed algorithm estimates CFO both in time-domain and frequency-domain using two carefully designed sequences. This novel technique possesses high accuracy as well as large estimation range and works well in fast varying channels.