TY - JOUR
T1 - Hybrid-Domain Parallel Decision Feedback Equalization for Single-Carrier Block Transmission
AU - Jia, Jiun Jie
AU - Lai, Kuei Chiang
AU - Pan, Jian Yu
N1 - Funding Information:
Manuscript received August 21, 2016; revised May 18, 2017; accepted September 14, 2017. Date of publication October 9, 2017; date of current version February 12, 2018. This work was supported in part by the Ministry of Science and Technology, Taipei City, Taiwan, under contract MOST 104-2221-E-006-074, and in part by the Ministry of Education, Taipei City, Taiwan, through the Headquarters of University Advancement at the National Cheng Kung University. The review of this paper was coordinated by Dr. C. Cozzo. (Corresponding author: Kuei-Chiang Lai.) J.-J. Jia is with the MediaTek, Inc., Hsinchu 30078, Taiwan (e-mail: chia1112@hotmail.com).
Publisher Copyright:
© 1967-2012 IEEE.
PY - 2018/2
Y1 - 2018/2
N2 - To combat intersymbol interference (ISI) in single-carrier block transmission systems, the hybrid decision feedback equalizer (HDFE) is a low-complexity, symbol-by-symbol detector that combines a frequency-domain feedforward filter and a time-domain feedback filter. To mitigate the error propagation effect of HDFE while preserving the implementation advantages of frequency-domain equalization, we propose the parallel HDFE (P-HDFE) algorithm that operates, based on the reliability of the decision variable, as an ordinary HDFE or a sequence detector that consists of multiple HDFEs running in parallel. Our study shows that, at moderate to high signal-to-noise ratios (SNRs), P-HDFE outperforms HDFE with little increase in complexity. We analyze the symbol error rate of P-HDFE at high SNRs for the case of quaternary phase-shift keying and static ISI channels, accounting for error propagation and residual ISI. Simulations demonstrate the accuracy of the analysis.
AB - To combat intersymbol interference (ISI) in single-carrier block transmission systems, the hybrid decision feedback equalizer (HDFE) is a low-complexity, symbol-by-symbol detector that combines a frequency-domain feedforward filter and a time-domain feedback filter. To mitigate the error propagation effect of HDFE while preserving the implementation advantages of frequency-domain equalization, we propose the parallel HDFE (P-HDFE) algorithm that operates, based on the reliability of the decision variable, as an ordinary HDFE or a sequence detector that consists of multiple HDFEs running in parallel. Our study shows that, at moderate to high signal-to-noise ratios (SNRs), P-HDFE outperforms HDFE with little increase in complexity. We analyze the symbol error rate of P-HDFE at high SNRs for the case of quaternary phase-shift keying and static ISI channels, accounting for error propagation and residual ISI. Simulations demonstrate the accuracy of the analysis.
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U2 - 10.1109/TVT.2017.2760837
DO - 10.1109/TVT.2017.2760837
M3 - Article
AN - SCOPUS:85031820452
SN - 0018-9545
VL - 67
SP - 1454
EP - 1469
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 2
ER -