A method of PRACH detection threshold setting in LTE TDD femtocell system

Yanchao Hu*, Juan Han, Shan Tang, Huajie Gao, Yongtao Su, Jinglin Shi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

10 Citations (Scopus)

Abstract

Detection threshold is a crucial parameter in Physical Random Access Channel (PRACH) receiver and determines the detection performance and efficiency. A method of PRACH detection threshold setting in Long Term Evolution (LTE) Time Division Duplex (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.

Original languageEnglish
Title of host publication2012 7th International ICST Conference on Communications and Networking in China, CHINACOM 2012 - Proceedings
Pages408-413
Number of pages6
DOIs
Publication statusPublished - 2012
Event2012 7th International ICST Conference on Communications and Networking in China, CHINACOM 2012 - Kun Ming, China
Duration: 7 Aug 201210 Aug 2012

Other

Other2012 7th International ICST Conference on Communications and Networking in China, CHINACOM 2012
CountryChina
CityKun Ming
Period7/08/1210/08/12

Keywords

  • detection threshold
  • femtocell
  • LTE
  • PRACH
  • random access

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