摘要
定时同步和频率同步是影响MIMO-OFDM系统性能的关键因素。提出一种改进的帧同步算法并分析其仿真结果。仿真结果表明:该算法能够消除传统帧定时算法的平台效应,在提高帧同步精度的同时,对系统小数倍频偏估计性能也有所提高。
The combination of multiple input muhiple output （MIMO） and orthogonal frequency division multiplexing （OFDM） can well solve the most serious problems about broadband wireless communication system in future, which are muhipath fading and the utilization of frequency band. At the same time, it can also improve the system capacity and trans- mission reliability. However, timing synchronization and frequency synchronization is the key factor affecting the perform- ance of MIMO-OFDM system. This paper proposes an improved frame synchronization algorithm, and this algorithm can e- liminate the platform effects and improve the accuracy of the frame synchronization. Meanwhile, the fractional frequency shift estimation performance has also improved.
出处
《数字通信》
2012年第2期28-31,共4页
Digital Communications and Networks
