Pilot Assisted Channel Frequency Response Estimation for an OFDM System with a Comb-Type Pilot Pattern 


Vol. 39,  No. 6, pp. 333-342, Jun.  2014


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  Abstract

The pilot assisted channel frequency response (CFR) estimation schemes for an OFDM-based system with virtual subcarriers are analyzed under the assumption that pilot symbols are located according to a comb-type pattern in the OFDM block. In particular, as the minimum mean square error (MMSE) based scheme aiming to directly predict the channel impulse response and the MMSE based scheme aiming to suppress the leakage have not been clearly compared, by proving that the mean square errors (MSEs) of the latter scheme is always larger than that of the former scheme, this paper shows that the former scheme is superior to the latter scheme. Moreover, the impact of the number of pilots on the performances of the MMSE and least-square based channel estimation schemes are investigated. The performance analyses of the presented schemes are confirmed by computer simulation.

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  Cite this article

[IEEE Style]

Y. Kim, N. Kim, E. Yoon, "Pilot Assisted Channel Frequency Response Estimation for an OFDM System with a Comb-Type Pilot Pattern," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 6, pp. 333-342, 2014. DOI: .

[ACM Style]

Youngwoong Kim, Namhoon Kim, and Eunchul Yoon. 2014. Pilot Assisted Channel Frequency Response Estimation for an OFDM System with a Comb-Type Pilot Pattern. The Journal of Korean Institute of Communications and Information Sciences, 39, 6, (2014), 333-342. DOI: .

[KICS Style]

Youngwoong Kim, Namhoon Kim, Eunchul Yoon, "Pilot Assisted Channel Frequency Response Estimation for an OFDM System with a Comb-Type Pilot Pattern," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 6, pp. 333-342, 6. 2014.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880