Performance Comparison and Analysis of SC-FDMA Systems employing IB-DFE 


Vol. 34,  No. 9, pp. 906-914, Sep.  2009


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  Abstract

SC-FDMA is employed in the 3GPP-LTE standard as the uplink transmission scheme. SC-FDMA has advantages that the signal has a low PAPR property and a simple equalizer such as FD-LE can be implemented. But FD-LE has inferior performance to Hybrid-DFE composed of frequency-domain feedforward filter and time-domain feedback filter. Recently, several IB-DFE algorithms have been proposed to overcome the disadvantages of implementation and processing complexity of Hybrid-DFE and to obtain superior performance to FD-LE. In this paper, we apply several IB-DFE algorithms to 3GPP-LTE uplink system and compare their performance by calculating BER. We investigate the effects of channel estimation errors and Doppler shift on performance. Finally, by analyzing computational complexity of IB-DFEs, we present some criteria to choose appropriate algorithm and to decide the number of iterative processes.

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  Cite this article

[IEEE Style]

J. Cho and S. Ahn, "Performance Comparison and Analysis of SC-FDMA Systems employing IB-DFE," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 9, pp. 906-914, 2009. DOI: .

[ACM Style]

Jae-Deok Cho and Sang-Sik Ahn. 2009. Performance Comparison and Analysis of SC-FDMA Systems employing IB-DFE. The Journal of Korean Institute of Communications and Information Sciences, 34, 9, (2009), 906-914. DOI: .

[KICS Style]

Jae-Deok Cho and Sang-Sik Ahn, "Performance Comparison and Analysis of SC-FDMA Systems employing IB-DFE," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 9, pp. 906-914, 9. 2009.