Frequency-domain iterative block DFE using erasure zones and improved parameter estimation

Jian Yu Pan, Kuei Chiang Lai, Yi Ting Li, Szu Lin Su

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)1159-1171
Number of pages13
JournalIEICE Transactions on Communications
Issue number9
Publication statusPublished - 2021

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


Dive into the research topics of 'Frequency-domain iterative block DFE using erasure zones and improved parameter estimation'. Together they form a unique fingerprint.

Cite this