研究了OFDM技术在TD-SCDMA第3代移动通信系统中应用OFDM的符号同步问题,并结合TD-SCDMA的帧结构,提出了一种基于多个OFDM符号联合实现符号定时同步和载波同步的算法。对其在“case3”信道的性能进行仿真,仿真结果表明,提出的算法有较高的精度。
This paper researches OFDM symbol synchronization in the TD-SCDMA system of 3GPP, and combines the frame slructure of TD-SCDMA system to propose an estimation algorithm for OFDM carrier and timing synchronization based on multi-symbols. The effect of addi- tive with Gaussian noise on the synchronization over a case3 channel is presented with computer simulation. The result showed that this arithmetic has relatively high precision.