Performance of a Coded Frequency Hopping OFDMA System with an Iterative Receiver in Uplink Cellular Environments 


Vol. 30,  No. 11, pp. 1108-1115, Nov.  2005


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  Abstract

In this paper, we propose a practical iterative channel estimation and decoding method for an LDPC-coded frequency hopping OFDMA system in the uplink of a packet-based cellular system. In the method, the channel gain and noise variance are iteratively estimated with both pilot symbols and LDPC decoder outputs to provide more reliable decoding metrics in intercell interference (ICI) environments. In addition, the channel correlation coefficient is also estimated to select proper filter coefficients according to the channel variation rate. Through simulations under the various channel conditions and different receiver configurations, it is shown that the proposed iterative receiver improves the performance without boosting the pilot power and mitigates the adverse effects of the non-uniform ICI.

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  Cite this article

[IEEE Style]

Y. H. Kim and S. K. Kang, "Performance of a Coded Frequency Hopping OFDMA System with an Iterative Receiver in Uplink Cellular Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 11, pp. 1108-1115, 2005. DOI: .

[ACM Style]

Yun Hee Kim and Sung Kyo Kang. 2005. Performance of a Coded Frequency Hopping OFDMA System with an Iterative Receiver in Uplink Cellular Environments. The Journal of Korean Institute of Communications and Information Sciences, 30, 11, (2005), 1108-1115. DOI: .

[KICS Style]

Yun Hee Kim and Sung Kyo Kang, "Performance of a Coded Frequency Hopping OFDMA System with an Iterative Receiver in Uplink Cellular Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 11, pp. 1108-1115, 11. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880