Title :
A modified CA-CFAR method for LTE random access detection
Author :
de Figueiredo, Felipe A. P. ; Miranda, Joao Paulo C. L. ; Cardoso, Fabbryccio A. C. M. ; Lenzi, Karlo G. ; Bianco Filho, Jose A. ; Figueiredo, Fabricio L.
Author_Institution :
Convergent Networks Dept., CPqD - R&D Center, Campinas, Brazil
Abstract :
Random Access is an important aspect of mobile systems where multiple users are always competing for resources. However, noise imposes a significant problem to those systems causing them to falsely detect access requests. In consequence, unnecessary processing and air traffic are generated based upon these unreal request events. This paper presents a modified Cell-Average Constant False Alarm Rate (CA-CFAR) strategy used for random access detection of CAZAC preambles in the presence of noise. Simulation results indicate that the proposed method performs well even in the case of low SNR.
Keywords :
Long Term Evolution; air traffic; cellular radio; frequency division multiple access; signal detection; CA-CFAR method; CAZAC; LTE random access detection; SNR; air traffic; cell-average constant false alarm rate strategy; Correlation; Detectors; Frequency-domain analysis; Long Term Evolution; Receivers; Signal to noise ratio; CA-CFAR; CAZAC; LTE; PRACH; Random Access Preamble Detection; Zadoff-Chu Sequence;
Conference_Titel :
Signal Processing and Communication Systems (ICSPCS), 2013 7th International Conference on
Conference_Location :
Carrara, VIC
DOI :
10.1109/ICSPCS.2013.6723992
