Jun-Hee Jang
ABSTRACT
An enhanced discrete Fourier transform (DFT)-based channel estimation for OFDM system is proposed. Conventional DFT-based channel estimations improve the performance by suppressing time domain noise. However, the disadvantage is that the effect of noise reduction is dependent upon the number of pilot signals. In order to overcome the disadvantage, the proposed algorithm improves performance by using the decision directed method for data subcarriers, and it is confirmed by computer simulation. Simulation results demonstrate that the proposed algorithm outperforms the conventional DFT-based estimation in terms of BER and MSE performance.
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Digital Library
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Index Terms
- DFT-based decision directed channel estimation algorithm for OFDM systems
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