Iterative Frequency Domain Combining Equalization Algorithm for Single Carrier Systems

Qiao Liang; Xin Ji-rong; Zheng Hui

doi:10.11999/JEIT141507

Volume 37 Issue 8

Aug. 2015

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Qiao Liang, Xin Ji-rong, Zheng Hui. Iterative Frequency Domain Combining Equalization Algorithm for Single Carrier Systems[J]. Journal of Electronics & Information Technology, 2015, 37(8): 1950-1956. doi: 10.11999/JEIT141507

Citation:

Qiao Liang, Xin Ji-rong, Zheng Hui. Iterative Frequency Domain Combining Equalization Algorithm for Single Carrier Systems[J]. Journal of Electronics & Information Technology, 2015, 37(8): 1950-1956. doi: 10.11999/JEIT141507

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Iterative Frequency Domain Combining Equalization Algorithm for Single Carrier Systems

doi: 10.11999/JEIT141507

1.
(National Key Laboratory of Science and Technology on Blind Signal Processing, Chengdu 610041, China)
2.

Received Date: 2014-11-27
Rev Recd Date: 2015-04-28
Publish Date: 2015-08-19

Abstract

Abstract

To combat the effect of InterSymbol Interference (ISI) while transmitting data over wireless fading channels, the issue of single carrier communication signal receiving with multiple antennas is studied and an iterative frequency domain combining equalization algorithm is proposed. The proposed algorithm derives the theoretical frequency domain transfer function of the combining equalizer with a priori information. An efficient implementation is proposed which employs the Fast Fourier Transform (FFT) to compute the combining equalizer coefficients and equalization filter. Numerical results show that the proposed algorithm reduces complexity enormously with nearly no performance loss compared with the time domain algorithm. Compared with Single Carrier Frequency Domain Equalization (SC-FDE), the Cyclic Prefix (CP) overhead can be avoided, and the computationally efficient frequency domain algorithm can be applied to the existing single carrier communication systems.
- Wireless communication,
- Spatial diversity,
- Frequency domain equalization,
- InterSymbol Interference (ISI)

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References(19)

References

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