基于802.11a的OFDM系统同步算法的FPGA设计与实现
esign and implementation of synchronization algorithm for 802.11a OFDM system based on FPGA
同步技术是OFDM最关键的技术之一，它包括载波频率同步，帧同步和符号同步，载波频率同步是为了纠正接收端相对于发送端的载波频率偏移，以保证子载波间的正交性；帧检测是正确判断一帧数据的到来，符号同步确定OFDM符号有用数据信息的开始时刻，也就是确定FFT窗的开始时刻，本文介绍了基于短训练序列自相关实现帧同步，载波频率同步和符号同步的原理，完成了FPGA设计与实现。
s one of the most crucial technique of OFDM, synchronization technique includes carrier frequency synchronization, frame synchronization and symbol synchronization. Carrier frequency synchronization rectifies the carrier frequency offset between transmitter and receiver, ensuring the orthogonality among sub-carriers and symbol synchronization determinates the beginning of useful data in an OFDM symbol, which is also the starting moment of FFT window. In this paper, a carrier frequency synchronization algorithm and symbol synchronization algorithm based on autocorrelation of short training signals has been introduced and realized in FPGA.
陈娟
无线通信通信微电子学、集成电路
正交频分复用 现场可编程门阵列 帧检测 频偏估计 符号同步
Orthogonal frequency-division multiplexing FPGA frame detection frequency offset estimation symbol synchronization
陈娟.基于802.11a的OFDM系统同步算法的FPGA设计与实现[EB/OL].(2008-03-21)[2025-07-25].http://www.paper.edu.cn/releasepaper/content/200803-618.点此复制
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