Merge between cyclic prefix and training sequence for CFO estimation techniques on OFDM systems

Research output: Contribution to journalArticle

Abstract

Synchronization is the essential process between the transmitter and the receiver of wireless communication system, such as orthogonal frequency division multiplexing. Two essential factors, namely, carrier frequency offset (CFO) and symbol timing offset (STO) are related to synchronization. Each factor has several methods for solving the problems from synchronization in the time and the frequency domain. In this study, the work is performed in the time domain that handles CFO effect. It uses two techniques, namely, a training sequence and a cyclic prefix. Each technique hasadvantages and disadvantages. The proposed method uses a hybrid of these two techniques for CFO estimation. Simulation results corroborate that the proposed method has the combined benefits of both methods. The signal-to-noise ratio is used as the indicator. It plays substantial role with respect to bit error rate by transitioning from one technique to another as shown in the research results. MATLAB is used to set all simulation results.

Original languageEnglish
Pages (from-to)867-878
Number of pages12
JournalJournal of Theoretical and Applied Information Technology
Volume97
Issue number3
Publication statusPublished - 1 Feb 2019

Fingerprint

Cyclic Prefix
Carrier Frequency Offset
Orthogonal Frequency Division multiplexing (OFDM)
Orthogonal frequency division multiplexing
Synchronization
Bit error rate
MATLAB
Transmitters
Signal to noise ratio
Communication systems
Wireless Communication
Transmitter
Communication Systems
Frequency Domain
Error Rate
Time Domain
Timing
Simulation
Receiver
Training

Keywords

  • Carrier frequency offset
  • Cyclic prefix
  • OFDM
  • Training sequence

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

Cite this

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abstract = "Synchronization is the essential process between the transmitter and the receiver of wireless communication system, such as orthogonal frequency division multiplexing. Two essential factors, namely, carrier frequency offset (CFO) and symbol timing offset (STO) are related to synchronization. Each factor has several methods for solving the problems from synchronization in the time and the frequency domain. In this study, the work is performed in the time domain that handles CFO effect. It uses two techniques, namely, a training sequence and a cyclic prefix. Each technique hasadvantages and disadvantages. The proposed method uses a hybrid of these two techniques for CFO estimation. Simulation results corroborate that the proposed method has the combined benefits of both methods. The signal-to-noise ratio is used as the indicator. It plays substantial role with respect to bit error rate by transitioning from one technique to another as shown in the research results. MATLAB is used to set all simulation results.",
keywords = "Carrier frequency offset, Cyclic prefix, OFDM, Training sequence",
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