Comparative Study of Two Signal-to-Noise Ratio Calculation Methods in LTE Downlink Simulations

  • Yu-Sun LiuEmail author
  • Shingchern D. You
  • Zong-Ru Jhan
  • Meng-Fan Li
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 264)


It is well-known that the bit error rate (BER) of a mobile communication system is strongly affected by the signal-to-noise ratio (SNR). Because the term SNR is so fundamental that most papers did not explain how SNR is calculatd in simulations. In this paper, we report the BER perfomrance for Long Term Evolution (LTE) downlink simulations with two different SNR calculation methods. It is found that using short-term SNR not only yields much smaller BER than using ensemble-average SNR, but also reverses the ordering of BER performance among the channel models. We thus suggest that in order to fully disclose their implications on performance, the BERs measured against the two SNRs should be presented side by side in LTE downlink simulation studies.


Long term evolution Signal-to-noise ratio Simulated channel 



This work was supported by the Ministry of Science and Technology, Taiwan, under Project 104-2221-E-027-034.


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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2019

Authors and Affiliations

  • Yu-Sun Liu
    • 1
    Email author
  • Shingchern D. You
    • 2
  • Zong-Ru Jhan
    • 3
  • Meng-Fan Li
    • 1
  1. 1.Department of Electronic EngineeringNational Taipei University of TechnologyTaipeiTaiwan
  2. 2.Department of Computer Science and Information EngineeringNational Taipei University of TechnologyTaipeiTaiwan
  3. 3.Quanta Computer Inc.TaipeiTaiwan

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