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

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 base...

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Bibliographic Details
Published in2012 7th International ICST Conference on Communications and Networking in China pp. 408 - 413
Main Authors Yanchao Hu, Juan Han, Shan Tang, Huajie Gao, Yongtao Su, Jinglin Shi
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2012
Subjects
Antennas
Correlation
Delay
detection threshold
femtocell
Frequency domain analysis
LTE
Noise level
PRACH
random access
Receivers
Simulation
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ISBN9781467326988
1467326984
DOI10.1109/ChinaCom.2012.6417517

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Summary: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.
ISBN:9781467326988
1467326984
DOI:10.1109/ChinaCom.2012.6417517