Tap-Configured Time-Domain Precoder for MIMO-OFDM Systems with Channel Estimation Errors

Leveraging the correlation in the frequency domain is essential for channel estimation in a multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) system. However, precoding can impair the channel correlation, making channel estimation more challenging. This paper proposes a space-time estimator mismatch compensation precoding (ST-EMCP) method to maximize spectral efficiency. This approach explicitly introduces the mismatch between the estimator and the true channel, modeling the resulting estimation errors as interference and compensating for the mismatch within the framework of sum-rate maximization. By utilizing space-time precoding, ST-EMCP ensures the smoothness of the frequencydomain channel and compensates uniformly for the channel estimation mismatch across the entire frequency band, ultimately reducing the overall channel estimation error. Numerical simulations demonstrate that the proposed ST-EMCP achieves better channel estimation and higher throughput than existing methods.

• Publication year

  2025

• Venue

  2025 IEEE/CIC International Conference on Communications in China (ICCC)

• Publication date

  2025-08-10

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1109/ICCC65529.2025.11148730
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• Channel Estimation Considerate Precoder Design for Multi-User Massive MIMO-OFDM Systems: The Concept and Fast Algorithms

  2024influential reference
• An Introduction to Optimization on Smooth Manifolds

  2023cited by this paper
• Phase Rotations of SVD-Based Precoders in MIMO-OFDM for Improved Channel Estimation

  2021cited by this paper
• Channel Shortening by Large Multiantenna Precoding in OFDM

  2021cited by this paper
• Bounds on the Information Rate of Intersymbol Interference Channels Based on Mismatched Receivers

  2012cited by this paper
• Smooth beamforming for OFDM

  2009cited by this paper
• Smooth Beamforming and Efficient Beamforming Weight Computation

  2007cited by this paper
• Capacity and power allocation for fading MIMO channels with channel estimation error

  2006cited by this paper
• WLC42-3: MIMO-OFDM Beamforming for Improved Channel Estimation

  2006cited by this paper
• Zero-forcing methods for downlink spatial multiplexing in multiuser MIMO channels

  2004cited by this paper
• Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels

  2003cited by this paper
• Robust channel estimation for OFDM systems with rapid dispersive fading channels

  1998cited by this paper
• Two-dimensional pilot-symbol-aided channel estimation by Wiener filtering

  1997cited by this paper

• No citing papers are available for this paper.