Rapid cell search in OFDM-based cellular systems

Abstract

Cell search is one of the most important issues in cellular systems. There have been large efforts on the synchronization problem in OFDM systems. However, conventional OFDM-based cellular schemes may have problems in initial timing acquisition and cell identification, requiring a large cell search time. In this paper, we propose a novel three-step cell search scheme using a new preamble for OFDM-based cellular systems. Simulation results show that the proposed cell search scheme can provide fast cell search performance in multi-cell environment, while reducing the computational complexity.