TY - JOUR
T1 - Frequency-domain iterative block DFE using erasure zones and improved parameter estimation
AU - Pan, Jian Yu
AU - Lai, Kuei Chiang
AU - Li, Yi Ting
AU - Su, Szu Lin
N1 - Funding Information:
Manuscript received July 18, 2020. Manuscript revised January 13, 2021. Manuscript publicized March 22, 2021. †The author is with the Tainan City Police Department, Tainan City, Taiwan. ††The authors are with the Department of Electrical Engineering, National Cheng Kung University, Tainan City, Taiwan. †††The author is with the HTC Corporation, New Taipei City, Taiwan. ∗This work was supported by the Ministry of Science and Technology, Taiwan, R.O.C., under Contract MOST 109-2221-E-006-184. a) E-mail: [email protected] DOI: 10.1587/transcom.2020EBP3111
Publisher Copyright:
Copyright © 2021 The Institute of Electronics, Information and Communication Engineers
PY - 2021
Y1 - 2021
N2 - Iterative block decision feedback equalization with hard-decision feedback (HD-IBDFE) was proposed for single-carrier transmission with frequency-domain equalization (SC-FDE). The detection performance hinges upon not only error propagation, but also the accuracy of estimating the parameters used to re-compute the equalizer coefficients at each iteration. In this paper, we use the erasure zone (EZ) to de-emphasize the feedback values when the hard decisions are not reliable. EZ use also enables a more accurate, and yet computationally more efficient, parameter estimation method than HD-IBDFE. We show that the resulting equalizer coefficients share the same mathematical form as that of the HD-IBDFE, thereby preserving the merit of not requiring matrix inverse operations in calculating the equalizer coefficients. Simulations show that, by using the EZ and the proposed parameter estimation method, a significant performance improvement over the conventional HD-IBDFE can be achieved, but with lower complexity.
AB - Iterative block decision feedback equalization with hard-decision feedback (HD-IBDFE) was proposed for single-carrier transmission with frequency-domain equalization (SC-FDE). The detection performance hinges upon not only error propagation, but also the accuracy of estimating the parameters used to re-compute the equalizer coefficients at each iteration. In this paper, we use the erasure zone (EZ) to de-emphasize the feedback values when the hard decisions are not reliable. EZ use also enables a more accurate, and yet computationally more efficient, parameter estimation method than HD-IBDFE. We show that the resulting equalizer coefficients share the same mathematical form as that of the HD-IBDFE, thereby preserving the merit of not requiring matrix inverse operations in calculating the equalizer coefficients. Simulations show that, by using the EZ and the proposed parameter estimation method, a significant performance improvement over the conventional HD-IBDFE can be achieved, but with lower complexity.
UR - http://www.scopus.com/inward/record.url?scp=85114407504&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85114407504&partnerID=8YFLogxK
U2 - 10.1587/transcom.2020EBP3111
DO - 10.1587/transcom.2020EBP3111
M3 - Article
AN - SCOPUS:85114407504
SN - 0916-8516
VL - E104B
SP - 1159
EP - 1171
JO - IEICE Transactions on Communications
JF - IEICE Transactions on Communications
IS - 9
ER -