Polar subcodes for MIMO systems

Liudmila Karakchieva; Peter Trifonov

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arXiv · 2508.20684

Polar subcodes for MIMO systems

Liudmila Karakchieva·Peter Trifonov

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Abstract

Polar-coded multiple-input multiple-output systems are investigated. An advanced receiver implementing joint list decoding of polar codes and QR- and MMSE-based detectors is proposed. The approximate and exact path metrics are derived for joint list decoder of polar codes. A construction of polar subcodes for MIMO systems with cross-antenna dynamic freezing constraints is proposed. The obtained polar subcodes provide significant performance gain compared to LDPC-coded MIMO systems with the same rate allocation.

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Liudmila Karakchieva, Peter Trifonov. 2025-08-28. Polar subcodes for MIMO systems. https://arxiv.org/abs/2508.20684

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