Fast algorithm of LTE RACH detection based on Sparse Fourier Transform

Aleksei Fedorov, Vladimir Lyashev, Lev Rapoport

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Sammanfattning

In this paper, we present a fast algorithm of time synchronization between User Equipment (UE) and Base Station (BS) which is suitable for Long Term Evolution (LTE) Random Access Channel (RACH). The algorithm reduces the complexity more than 1.5 times. Further, if the SNR is above a threshold, the algorithm allows to extremely reduce the complexity of synchronization more than 3 times. The presented method uses the sparse nature of a time synchronization problem, where the spike of a cross-correlation between received signal and local RACH preamble indicates correct time delay.
Originalspråkengelska
Titel på värdpublikation2015 Third International Conference on Digital Information, Networking, and Wireless Communications (DINWC)
Antal sidor6
ISBN (elektroniskt)978-1-4799-6376-8
DOI
StatusPublished - 2015
Externt publiceradJa
EvenemangThird International Conference on Digital Information, Networking, and Wireless Communications (DINWC) - Moscow, Ryssland
Varaktighet: 2015 feb. 32015 feb. 5

Konferens

KonferensThird International Conference on Digital Information, Networking, and Wireless Communications (DINWC)
Land/TerritoriumRyssland
OrtMoscow
Period2015/02/032015/02/05

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