DocumentCode :
586124
Title :
Iterative Block Decision Feedback Equalizer for Time-Frequency Interleave Diversity Scheme
Author :
Mao, Hongliang ; Pei, Yukui ; Ge, Ning
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fYear :
2012
fDate :
3-6 Sept. 2012
Firstpage :
1
Lastpage :
5
Abstract :
The time-frequency interleave (TFI) diversity scheme for single carrier block transmission with frequency domain equalization (SC-FDE) has been proposed. For single antenna wireless communication systems, it can provide frequency diversity in frequency selective channels by interleaving and retransmitting. In this article, the iterative block decision feedback equalization (IBDFE) structure for TFI diversity scheme is proposed. Both the feed-forward filter (FFF) and feed-backward filter (FBF) work in the frequency domain, which makes the implementation complexity low. The FFF and FBF coefficients based on minimum mean square error (MMSE) criterion are derived. The correlation between the transmitted symbols and the detected symbols are estimated in a simple iterative manner. Simulation results show that for TFI diversity scheme with IBDFE, a much better bit error rate (BER) performance can be obtained than TFI with frequency domain linear equalizer (FD-LE) only for one more iteration. Compared to IBDFE without TFI diversity, the performance gain is impressive.
Keywords :
antennas; decision feedback equalisers; error statistics; iterative methods; least mean squares methods; time-frequency analysis; wireless channels; BER performance; FBF coefficient; FDLE; FFF coefficient; IBDFE structure; MMSE criterion; SC-FDE; TFI diversity scheme; bit error rate; feed-backward filter; feed-forward filter; frequency domain linear equalizer; frequency selective channels; iterative block decision feedback equalizer; minimum mean square error; single antenna wireless communication systems; single carrier block transmission with frequency domain equalization; time-frequency interleave diversity scheme; Bit error rate; Decision feedback equalizers; Field-flow fractionation; OFDM; Time frequency analysis; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
ISSN :
1090-3038
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
Type :
conf
DOI :
10.1109/VTCFall.2012.6398936
Filename :
6398936
Link To Document :
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