Channel Estimation Techniques for OFDM-based Cellular Systems with Transparent Multi-hop Relays 


Vol. 32,  No. 8, pp. 813-819, Aug.  2007


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  Abstract

In this paper, the effect of a propagation delay resulting from the use of an OFDM-based cellular system with a transparent mobile multi-hop relay (MMR) is initially analyzed. Then, channel estimation techniques, a least square (LS) method and a minimum mean square error (MMSE) method, for the OFDM systems with throughput enhancement (TE) MMR or cooperative MMR are proposed. The proposed channel estimation techniques can overcome the performance degradation caused by the propagation delay in TE MMR or cooperative MMR systems. It is demonstrated by computer simulation that the proposed channel estimation techniques for OFDM systems with transparent MMR are superior to the conventional techniques in terms of mean square error (MSE) and bit error rate (BER).

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  Cite this article

[IEEE Style]

K. S. Woo, H. I. Yoo, Y. J. Kim, H. Lee, Y. S. Cho, "Channel Estimation Techniques for OFDM-based Cellular Systems with Transparent Multi-hop Relays," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 8, pp. 813-819, 2007. DOI: .

[ACM Style]

Kyung Soo Woo, Hyun Il Yoo, Yeong Jun Kim, Heesoo Lee, and Yong Soo Cho. 2007. Channel Estimation Techniques for OFDM-based Cellular Systems with Transparent Multi-hop Relays. The Journal of Korean Institute of Communications and Information Sciences, 32, 8, (2007), 813-819. DOI: .

[KICS Style]

Kyung Soo Woo, Hyun Il Yoo, Yeong Jun Kim, Heesoo Lee, Yong Soo Cho, "Channel Estimation Techniques for OFDM-based Cellular Systems with Transparent Multi-hop Relays," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 8, pp. 813-819, 8. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880