Equalization of Rapidly Varying Channels for OFDM Systems Using Subblock Tracking

Qing Hua Zhong; Kai Yan Chen; Han Zhang

doi:10.4028/www.scientific.net/AMM.263-266.1044

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 263-266Equalization of Rapidly Varying Channels for OFDM...

Equalization of Rapidly Varying Channels for OFDM Systems Using Subblock Tracking

Abstract:

A novel equalization approach for rapidly time-varying channels of OFDM systems is presented,which we propose receiver windowing based ‘subblockwise’ tracking scheme to combat with intercarrier interference (ICI),whose aim is to force each subblock of one OFDM block as time-invariant such that channel equalization can be performed by a time-invariant structure. Meanwhile, signal-to-interference ratio (SIR) is numerically evaluated and derived as a close-form expression for performance analysis. Simulation results show that the proposed scheme outperforms the existing equalizers, while requiring a lower complexity.

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Periodical:

Applied Mechanics and Materials (Volumes 263-266)

Pages:

1044-1050

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.263-266.1044

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Online since:

December 2012

Authors:

Qing Hua Zhong, Kai Yan Chen, Han Zhang

Keywords:

Equalization, Orthogonal Frequency Division Multiplexing (OFDM), Rapidly Time-Varying Channel, Subblock-Tracking

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