Complexity effective cell search scheme for OFDM cellular system

A novel cell search scheme based on coherent sequence detection and sign decision is proposed in this paper. The given structure of the SCH (synchronization channel) allows the UE (user equipment) to detect cell ID with low complexity, and the adverse effects of the channel fading and frequency offset are eliminated in the three search steps. The performance of the scheme is investigated in various multi-path environments. The detection performances as well as the complexity of the proposed scheme are compared with those of the available sequence correlation based and reference signal aided schemes. The simulation results show that the proposed scheme offers the highest cell search performance with the lowest complexity.