摘要
Schmidl&Cox算法是OFDM同步中的经典方法,该文提出在Schmidl&Cox算法的基础上,加入循环前缀对同步性能的影响,将Schmidl&Cox训练符号和循环前缀CP结合起来同时完成符号定时同步.同时采用滑动窗口取平均的方法对Schmidl&Cox方法进行改进,并对改进的算法进行了仿真.结果表明,由于滑动窗口取平均可以减少随机噪声对同步的影响,同步性能得到明显提高.
Schmidl＆Cox algorithm is classical in the synchronization technique of OFDM. On the basis of Schmidl＆Cox algorithm, we propose a new method that takes account of the effect of CP on the synchronization. The method completes the symbol timing synchronization by joint application of Schmidl＆Cox training symbol and CP. Also, the sliding windows time estimator is employed to reduce the influence of random noise synchronization. Computer simulation was made, suggesting that the performance of synchronization is improved.
出处
《应用科技》
CAS
2008年第9期26-28,共3页
Applied Science and Technology
