Iterative Scheme for Multi-Antenna Systems with RIS
Research Paper#Wireless Communication, RIS, Channel Estimation🔬 Research|Analyzed: Jan 3, 2026 16:21•
Published: Dec 28, 2025 00:11
•1 min read
•ArXivAnalysis
This paper addresses the challenge of channel estimation in multi-user multi-antenna systems enhanced by Reconfigurable Intelligent Surfaces (RIS). The proposed Iterative Channel Estimation, Detection, and Decoding (ICEDD) scheme aims to improve accuracy and reduce pilot overhead. The use of encoded pilots and iterative processing, along with channel tracking, are key contributions. The paper's significance lies in its potential to improve the performance of RIS-assisted communication systems, particularly in scenarios with non-sparse propagation and various RIS architectures.
Key Takeaways
- •Proposes an Iterative Channel Estimation, Detection and Decoding (ICEDD) scheme for multi-antenna systems with RIS.
- •Develops an Iterative Code-Aided Channel Estimation (ICCE) technique using LDPC codes and encoded pilots.
- •Introduces an Iterative Channel Tracking (ICT) method to leverage temporal channel correlation.
- •Provides analytical evaluation and numerical results validating the performance in various scenarios.
Reference / Citation
View Original"The core idea is to exploit encoded pilots (EP), enabling the use of both pilot and parity bits to iteratively refine channel estimates."