Localization MSE Analysis for Cooperative OFDM-ISAC

Kaitao Meng; Kawon Han; Christos Masouros

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arXiv · 2611.02783

Localization MSE Analysis for Cooperative OFDM-ISAC

Kaitao Meng·Kawon Han·Christos Masouros

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Abstract

This paper develops a receiver-specific mean-squared-error (MSE) framework for cooperative integrated sensing and communication (ISAC) localization using random orthogonal frequency-division multiplexing (OFDM) payloads. It captures local peak perturbations and incorrect ambiguity-peak acquisition for two classical receiver processing schemes: matched filtering (MF) and reciprocal filtering (RF). For scatterers well separated in delay, we quantify how frequency spread and interference induced by symbol-energy fluctuations affect local delay errors under MF. RF removes symbol-dependent weighting but amplifies noise for low-energy symbols. Payload-conditioned joint Gaussian delay profiles yield peak-selection probabilities, which combine with nonlinear multistatic fusion errors to approximate position MSE while accounting for network geometry. Numerical results illustrate receiver-dependent estimation errors and the benefits of frequency-dependent constellation allocation.

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Kaitao Meng, Kawon Han, Christos Masouros. 2026-11-02. Localization MSE Analysis for Cooperative OFDM-ISAC. https://arxiv.org/abs/2611.02783

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