Accurate Frequency Estimation of Real Sinusoid Signal

摘要：

Using the maximum likelihood estimation, the accuracy of frequency estimation can reach Cramer-Rao lower bound(CRLB) for a single complex sinusoid signal, but for the real sinusoid signal .accuracy can not reach CRLB, the reason is that real signal frequency spectrum include negative frequency, in addition, window function cause leakage of negative frequency spectrum, thus affecting the positive frequency part. In this paper, using Raise window to reduce the effect of the leakage of negative frequency, to improve the estimation accuracy, estimation accuracy can be close to CRLB. And for multiple frequencies estimation, Raise window can also reduce interaction effect of the frequency spectrum leakage, the computer simulation results show that this method is effective.

关键词： real sinusoid signal frequency estimation maximum likelihood estimation Cramer-Rao lower bound(CRLB) window function

作者: Shiwen Chen Donghai Li Xingping Wei

作者单位: Zhengzhou Information Science and Technology Institute Zhengzhou, China

会议类型: 国际会议

会议名称: 2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)

会议地点: 大连

会议语种:英文

页码: 2051-2053

在线出版日期: 2010-07-05（万方平台首次上网日期，不代表论文的发表时间）