Iterative Decision-Feedback Hybrid Equalization Method in Uplink SIMO SC-FDMA
Journal
2025 International Conference on Future Communications and Networks, FCN 2025 - Proceedings
Start Page
1
End Page
6
ISBN (of the container)
979-833159440-4
Date Issued
2025-12-23
Author(s)
Abstract
In this paper, an iterative decision-feedback hybrid equalization (IDFHE) method is integrated with post-equalization equal-gain combining (EGC) to enhance equalized symbol decision over multipath channels in uplink single-input multipleoutput (SIMO) single-carrier frequency-division multiple-access (SC-FDMA) systems. By use of decision-feedback equalization and hybrid equalizers in different iterations, the IDFHE method can suppress equalization-induced residual intersymbol interference progressively over iterations, while preventing noise enhancement at the last iteration. With SIMO reception, post-equalization EGC is integrated with equalized symbol decision at each iteration to exploit spatial diversity. By simulation, the SIMO IDFHE method is shown to outperform conventional SIMO methods remarkably in error performance and performance robustness against carrier frequency offsets and channel estimation errors.
Event(s)
2025 International Conference on Future Communications and Networks, FCN 2025
Subjects
Equal-gain combining
iterative decision-feedback equalization
multipath channel
single-carrier frequency-division multiple access
single-input multiple-output
Publisher
IEEE
Type
conference paper