Analysis of Communication Channels Based on Orthogonal Frequency Division Multiplexing

Authors

  • Liguo Zhao Department of Computer and Information Engineering, Luoyang Institute of Science and Technology, Luoyang, China
  • Hanlei Dong Department of Computer and Information Engineering, Luoyang Institute of Science and Technology, Luoyang, China

Abstract

Due to the complexity of the actual application environment of the communication channel system, channel information will be
affected by multi-path fading which seriously jeopardizes the system’s optimum performance. For this reason, research based on
orthogonal frequency-divisionmultiplexing is undertaken to improve the traditional evaluationmethods through Fourier transforms. A maximum likelihood criterion fractional frequency offset estimation algorithm for orthogonal frequency division multiplexing system based on FrFT is proposed. This algorithm uses chirp signal-based subcarriers as sinusoidal subcarriers to replace the traditional orthogonal frequency division multiplexing systems in the propagation of communication signals, and analyzes their effects through simulation. Previous studies have shown that this research method has a smaller frequency deviation estimation mean square error and lower error rate, and offers a useful theoretical reference for subsequent research.

Keywords: Orthogonal frequency division multiplexing; communication channel; carrier; power line

Cite As

L. Zhao, H. Dong, "Analysis of Communication Channels Based on Orthogonal Frequency Division Multiplexing",
Engineering Intelligent Systems, vol. 26 no. 4, pp. 161-167, 2018.







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Published

2018-12-01

Issue

Vol. 26 No. 4 (2018): International Journal of Engineering Intelligent Systems

Section

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