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A comparative investigation on channel estimation algorithms for OFDM in mobile communications

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3 Author(s)
Seog Geun Kang ; Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore ; Yong Min Ha ; Eon Kyeong Joo

A comparative investigation on various channel estimation algorithms for OFDM system in the mobile communication environment is presented and analyzed in terms of computational complexity, mean square error, and bit error rate in this paper. As a result, Wiener filter estimation shows the best error performance. Concerning the computational complexity as well as the performance, however, the piecewise linear estimator is considered as a proper choice when the reference signal spacing is relatively narrow. And the cubic-spline estimator is a good alternative to the Wiener filter estimation if the reference signal spacing is wider than the coherent bandwidth of transmission channel.

Published in:

IEEE Transactions on Broadcasting  (Volume:49 ,  Issue: 2 )