Research on OTFS Performance Based on Joint-Sparse Fast Time-Varying Channel Estimation

  • Wenjing GaoEmail author
  • Shanshan Li
  • Lei Zhao
  • Wenbin Guo
  • Tao Peng
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 312)


Contraposing the problem of high pilot overhead and poor estimation performance for OFDM system in fast time-varying channels, a novel channel estimation method based on joint-sparse basis expansion model is proposed. In order to resist the inter-carrier interference (ICI) of OFDM system over fast time-varying channel, we introduce the OTFS (Orthogonal Time Frequency Space) technique and propose an implementation scheme of OTFS system based on time-frequency domain channel estimation. Simulation results demonstrate that the proposed OTFS system has higher reliability and better adaptability than the OFDM system in high dynamic scenarios.


Time-varying channel estimation OTFS Joint-sparse basis expansion model Compressed sensing 



This work was partially supported by National Natural Science Foundation of China (NSFC 61271181, 61571054) and the Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory Foundation


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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2020

Authors and Affiliations

  • Wenjing Gao
    • 1
    • 2
    Email author
  • Shanshan Li
    • 1
  • Lei Zhao
    • 1
  • Wenbin Guo
    • 1
    • 2
  • Tao Peng
    • 1
  1. 1.Wireless Signal Processing and Network LaboratoryBeijing University of Posts and TelecommunicationsBeijingChina
  2. 2.Science and Technology on Information Transmission and Dissemination in Communication Networks LaboratoryBeijingChina

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