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Performance analysis of channel estimation in OFDM systems

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3 Author(s)
Jihyung Kim ; Dept. of Electr./Electron. Eng., Yonsei Univ., Seoul, South Korea ; Jeongho Park ; Daesik Hong

We investigate an analysis of channel estimation using an interpolation technique in orthogonal frequency division multiplexing systems. Then a criterion for the adaptive interval of pilot subcarriers is derived. The mean-square error (mse) of comb-type estimators is dominated by the length of channel delay and the interval of pilot subcarriers. Analysis shows that the mse performance of comb-type estimators with the adequate interval of pilot subcarriers is better than that of block-type estimator for indoor channels.

Published in:

Signal Processing Letters, IEEE  (Volume:12 ,  Issue: 1 )