This paper tackles the intricate challenge of channel estimation (CE) and symbol detection in high-mobility scenarios for orthogonal time frequency space (OTFS) systems. We introduce a novel partially superimposed pilots (PSP) pattern, strategically balancing computational complexity and CE accuracy 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 determination, 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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Optimal Partially Superimposed Pilot Pattern for OTFS Communication




    Publication date :

    2024-06-24


    Size :

    576062 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Iterative Channel Estimation/Detection for DZT-OTFS Using Superimposed Pilot Frames

    Yogesh, Vineetha / Rao Mattu, Sandesh / Chockalingam, A. | IEEE | 2024




    HQAM-OTFS: Enhancing the Shaping Gain of OTFS

    Sangeeta, Nalluru / Sharma, Sanjeev / Deka, Kuntal et al. | IEEE | 2024


    Location-Aware and Superimposed-Pilot Based Channel Estimation of Sparse HAP Radio Communication Channels

    Nawaz, Syed Junaid / Mansoor, Babar / Sharma, Shree K. et al. | IEEE | 2017