| Based on an overview of wireless communication, this paper presents the theory of multi-carrier modulation-OFDM technology and OFDM synchronization scheme. On the basis of synchronization theory in multi-carrier modulation, it analyzes the method of frequency-offset, symbol timing recovery and sampling clock offset estimation in principle. The algorithm of MIMO-OFDM synchronization is also proposed with improved training sequences including frame synchronization and frequency synchronization. Simulation of some algorithms with Matlab has been done and a design scheme of OFDM synchronization based on FPGA is proposed. This paper also makes a simulation of circuits with Quartus and implement of hardware reality with FPGA. |
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