一种基于pss序列的ofdm系统低复杂高精度帧 同步方法跟其fpga实现.pdf

Hans Journal of Wireless Communications 无线通信, 2018, 8(2), 45-56 Published Online April 2018 in Hans. /journal/hjwc /10.12677/hjwc.2018.82005 A Low Complex and High Precision Frame Synchronization Method for OFDM System Based on PSS Sequence and Its FPGA Implementation Zhichao Huang, Kang Wang School of Information Science and Engineering, Southeast University, Nanjing Jiangsu th th th Received: Mar. 29 , 2018; accepted: Apr. 17 , 2018; published: Apr. 24 , 2018 Abstract Wireless frame synchronization is one of the key technologies in OFDM system. Only through frame synchronization between the base station and the user and the starting point of the wireless frame is found, communication signal can be successfully processed. Synchronization precision directly affects the performance of signal processing in the system. At the same time, how to re- duce the complexity of the algorithm and reduce the consumption of hardware resources is also a key problem that must be considered in the algorithm design. In view of the above problems, a low complex and high precision frame synchronization algorithm is proposed in this paper. On the ba- sis of traditional wireless frame synchronization, the algorithm only adds a plural multiplier, two accumulators and related logic modules. It can implement low complex and high precision wire- less frame synchronization based on PSS sequence. Meanwhile, this paper implements the algo- rithm in hardware using LabVIEW FPGA language and the algorithm is deployed in the actual MIMO-OFDM system, operating stably and effectively. Keywords OFDM, Frame Synchronization, Low Complex, PSS, LabVIEW FPGA