2008•Unpublished venueRequires access

OFDM transform-domain channel estimation based on MMSE for underwater acoustic channels

Yonghuai Zhang, Haixin Sun, Fang Xu, Deqing Wang

Abstract

In this paper, we present a method of transform-domain channel estimation for orthogonal frequency division multiplexing (OFDM). The estimator based on minimum mean squared error (MMSE), and a process of FFT and IFFT is added. The system has been tested in a real underwater acoustic channel - the experimental pool in Xiamen University. The experimental result shows that the transform-domain channel estimation has improved the performance of the OFDM system in underwater acoustic channels.

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Available abstract

Key concepts: Orthogonal frequency-division multiplexing, Estimator, Fast Fourier transform, Minimum mean square error, Channel (broadcasting), Underwater acoustic communication, Frequency domain, Computer science