7th International Conference on Communications and Networking in China

Research Article

A Method of PRACH Detection Threshold Setting in LTE TDD Femtocell System

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BibTeX Plain Text
  • @INPROCEEDINGS{10.1109/ChinaCom.2012.6417517,
    author={Yanchao Hu and Juan Han and Shan Tang and Huajie Gao and Yongtao Su and Jinglin Shi},
    title={A Method of PRACH Detection Threshold Setting in LTE TDD Femtocell System},
    proceedings={7th International Conference on Communications and Networking in China},
    publisher={IEEE},
    proceedings_a={CHINACOM},
    year={2012},
    month={10},
    keywords={lte random access femtocell prach detection threshold},
    doi={10.1109/ChinaCom.2012.6417517}
}
  • Yanchao Hu
    Juan Han
    Shan Tang
    Huajie Gao
    Yongtao Su
    Jinglin Shi
    Year: 2012
    A Method of PRACH Detection Threshold Setting in LTE TDD Femtocell System
    CHINACOM
    IEEE
    DOI: 10.1109/ChinaCom.2012.6417517
Yanchao Hu1,*, Juan Han1, Shan Tang2, Huajie Gao1, Yongtao Su2, Jinglin Shi2
  • 1: Wireless Communication Technology Research Center, Key Laboratory of Mobile Computing and Pervasive Device, Institute of Computing Technology, Chinese Academy Sciences
  • 2: Wireless Communication Technology Research Center, Institute of Computing Technology, Chinese Academy of Sciences
*Contact email: huyanchao@ict.ac.cn

Abstract

Detection threshold is a crucial parameter in PRACH receiver and determines the detection performance and efficiency. A method of PRACH detection threshold setting in LTE TDD femtocell system is proposed in this paper based on theoretical analysis. This method uses the frequency domain correlation calculation results, and benefits from multiple antennas diversity combing to adjust the relative detection threshold, which is the ratio of absolute detection threshold and time varying noise level. Cumulative Distribution Function (CDF) of the relative threshold is modified to obtain the absolute threshold. Simulation results show that the proposed method fulfills the requirements of the system and gets a promotion in performance under certain false alarm probability and channel conditions.

Keywords
lte random access femtocell prach detection threshold
Published
2012-10-24
Publisher
IEEE
http://dx.doi.org/10.1109/ChinaCom.2012.6417517
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