摘要
正交频分复用(OFDM)对同步偏差十分敏感,同步偏差的产生会使OFDM系统性能大大降低。通过对训练符号在时域乘以特殊伪随机序列来消除定时同步中的峰值平台问题,仿真结果表明,与传统算法相比,改进算法在同步位置具有很尖锐的峰值,同步性能更好,符号定时更精确。
Orthogonal Frequency Division Multiplexing（OFDM） is particularly sensitive to the synchronization errors that can greatly decrease the OFDM system performance.The plateau in timing synchronization is eliminated by multiplying the special pseudo random sequence in time domain.The simulation results show that the proposed scheme is more efficient in comparison with the conventional algorithm,the improved algorithm has a very sharp peak in synchronization position and a better performance in synchronization,and it is more accurate in symbol timing.
出处
《舰船电子工程》
2012年第3期36-37,67,共3页
Ship Electronic Engineering
