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Conference Papers Year : 2024

Optimal partially superimposed pilot pattern for OTFS communication

Abstract

This paper tackles the intricate challenge of channel estimation (CE) and symbol detection in high-mobility scenar- ios for orthogonal time frequency space (OTFS) systems. We introduce a novel partially superimposed pilots (PSP) pattern, strategically balancing computational complexity and CE ac- curacy by partially superimposing pilots and data symbols in the delay-Doppler (DD) domain. Additionally, we propose a CE and symbol detection (CESD) algorithm, employing an iterative approach that combines low complexity minimum mean squared error (LMMSE) for CE and simplicity-based detection for data symbols. Key contributions encompass optimal pilot pattern de- termination, a comprehensive iterative algorithm, and a thorough performance evaluation. Comparative analyses with state-of-the- art methods underscore the superior trade-off achieved by CESD in terms of normalized mean square error for CE, bit error rate, spectral efficiency, and computational complexity.
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Dates and versions

hal-04588687 , version 1 (27-05-2024)

Identifiers

  • HAL Id : hal-04588687 , version 1

Cite

Rabah Ouchikh, Abdeldjalil Aissa El Bey, Thierry Chonavel, Nacerredine Lassami. Optimal partially superimposed pilot pattern for OTFS communication. VTC2024-Spring: IEEE 99th Vehicular Technology Conference, Jun 2024, Singapour, Singapore. ⟨hal-04588687⟩
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