Improved Algorithm of LTE Random Access Preamble Detection under the High Speed Condition

Liu Jinhu (Lanzhou Jiao Tong University)
Ma Jian Ting (Lanzhou Jiao Tong University)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 11, No 8: August 2013

This paper improves the algorithm of preamble detection in LTE system random access under the condition of high speed. Improved algorithm mainly adopts peak filter to estimate noise and to set dynamic threshold, concerning that the constrained cyclic shift ZC array used in high speed subdistrict accumulate the useful correlated energy in incoherent way in order to avoid missing condition caused by frequency offset to increase detection rate. DOI: http://dx.doi.org/10.11591/telkomnika.v11i8.3091