2023•IEEJ Transactions on Electrical and Electronic EngineeringOpen access

Adaptive Carrier Frequency Offset Estimation in Interference Environments for OFDMA Uplink Systems

Nan‐Hung Cheng, Chien‐Chung Chen, Yi‐Fan Wang, Yung‐Fang Chen

Abstract

In orthogonal frequency division multiple access (OFDMA) systems, carrier frequency offsets (CFOs) influence the different users. In this paper, we proposed a CFO estimation algorithm with strong interference resistant capability for OFDMA systems. The first part of the proposed algorithm processes the received signals so as to deal with the CFO estimation problem. And the second part of the proposed algorithm is to use the proposed adaptive process to obtain the updated CFO estimation and track the parameters' time‐variations. Simulations demonstrate the effectiveness of this method and show that its performance is to the Cramer‐Rao Bounds (CRB). © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

Open-access reader

About this research paper

What this paper is about

Why it matters

OpenAlex reports 3 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Carrier frequency offset, Orthogonal frequency-division multiple access, Telecommunications link, Frequency offset, Interference (communication), Computer science, Orthogonal frequency-division multiplexing, Frequency-division multiple access