摘要
分析了现有TD-SCDMA系统中下行同步序列(SYNC_DL)搜索方法的频率鲁棒性和计算复杂度方面存在的问题。针对系统帧结构特点,提出了一种基于特征窗的低复杂度SYNC_DL频域搜索方法,数值仿真结果表明该方法能够减小大初始载波频率误差对下行同步性能的影响。
The problem is analyzed which lies in the existing downlink synchronization sequence（SYNC_DL） search method in TDSCDMA system that the robustness is poor and the computational complexity is high.Aimed at the characteristics of the system frame structure,a kind of SYNC_DL search scheme based on the characteristic window realized in frequency domain is put forward.The simulation results reveal that this method can eliminate the influence of great initial carrier frequency error to the downlink synchronization performance.Furthermore,the computational complexity of this method is reduced.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第24期125-126,148,共3页
Computer Engineering and Applications
关键词
下行同步特征窗初始频率误差分段相关
downlink synchronization
characteristic window
initial carrier frequency error
partial correlation
