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Vol. 158, Issue 11, November 2013, pp. 209-213

 

Bullet

 

Frequency Offset Correction for OFDM Systems
 
1 Yuying ZHOU, 1,2 Ying NI, 1 Xiaojian GUO

1 College of Energy and Electronic Engineering, Nanjing Institute of Industry Technology, Nanjing, 210023, China

2 Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

1 Tel.: +86-025-85864260, fax: +86-025-85864260
E-mail: zhouyy@niit.edu.cn

 

Received: 25 August 2013   /Accepted: 25 October 2013   /Published: 30 November 2013

Digital Sensors and Sensor Sysstems

 

Abstract: In this paper, we propose a robust method to estimate carrier frequency offset (CFO) for orthogonal frequency division multiplexing (OFDM) systems. A training symbol with two identical halves is employed to measure the fractional part of the CFO. While the integral part is estimated by using a novel noise subspace based metric. Simulation results demonstrate that the proposed method can achieve an estimation range equal to the whole bandwidth of the OFDM signal.

 

Keywords: Carrier frequency offset, Noise subspace, OFDM, Wireless communications.

 

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