Acta Metallurgica Sinica(English letters) ›› 2007, Vol. 14 ›› Issue (2): 33-37.doi: 1005-8885 (2007) 02-0033-05

• Wireless • Previous Articles     Next Articles

Cell search algorithms for the 3G long-term evolution

SU Huan;ZHANG Jian-hua   

  1. Beijing University of Posts and Telecommunications
  • Received:2006-09-07 Revised:1900-01-01 Online:2007-06-30


This article presents downlink initial synchronization and cell identification algorithms for long term evolution (LTE) of third-generation (3G) mobile communication systems, which are based on synchronization channel (SCH) and cell specific pilot symbols, respectively. The key features of the proposed scheme are: it can improve performance of the frequency synchronization through oversampling of the SCH, it can support a large number of target cells by modulating a cell-specific pilot sequence over two symbols within a subframe, and it can guarantee cell identification performance by maximally ratio combining the frequency domain differential cross-correlation. Simulations show that the proposed scheme has a potential use in 3G LTE.

Key words:

3rd generation partnership project (3GPP); LTE;orthogonal frequency division multiple access (OFDMA); cell search; oversampling

CLC Number: