Derivation of CRB and Refined SINR Expressions for OTFS-RSMA LEO ISAC Systems

2025/06/03 by Bruno Felipe Costa, Costa, Bruno Felipe, Taufik Abrão +1 · 1 citation
Engineering · #PAPR reduction in OFDM #Optical Wireless Communication Technologies #Advanced Wireless Communication Techniques

paper · pdf · doi:10.48550/arxiv.2506.02771

Abstract

This document provides detailed step-by-step derivations for the Cramér-Rao Bounds (CRB) for sensing parameters and the refined Signal-to-Interference-plus-Noise Ratio (SINR) expressions under imperfect Channel State Information (CSI) and imperfect Successive Interference Cancellation (SIC) for the Orthogonal Time Frequency Space (OTFS) Rate-Splitting Multiple Access (RSMA) framework presented in our main work "An Integrated OTFS-RSMA Framework for LEO Satellite ISAC: Modeling, Metrics, and Potential". These derivations support the analytical expressions and models in the broad main discussion.

Citations

• Refined Metrics, Sensing Limits, and Resource Allocation in OTFS-RSMA LEO ISAC
• Uplink Rate Splitting Multiple Access with Imperfect Channel State Information and Interference Cancellation
• Optimal BER Minimum Precoder Design for OTFS-Based ISAC Systems
• Robust Design of Rate-Splitting Multiple Access With Imperfect CSI for Cell-Free MIMO Systems
• Rate-Splitting Multiple Access for Downlink Multiuser MIMO: Precoder Optimization and PHY-Layer Design
• Orthogonal Time Frequency Space Modulation
• Fundamentals of Statistical Signal Processing: Estimation Theory

Cited by

• Refined Metrics, Sensing Limits, and Resource Allocation in OTFS-RSMA LEO ISAC

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