Summary
International Symposium on Antennas and Propagation
2006
Session Number:3A1b
Session:
Number:3A1b-3
DOA Estimation of Coherent Waves by Using Spatial Smoothing Preprocessings in Transmitter
Natsumi ENDO, Hiroyoshi YAMADA, Yoshio YAMAGUCHI,
pp.1-6
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
Direction of arrival estimation in coherent multipath environment by using the superresolution technique often requires decorrelation techniques. Spatial smoothing preprocessings are the most popular scheme as the techniques. In mobile environment, position change of the target/transmitter often brings us decorrelation effect. Multiple transmitting signals by an antenna array like a MIMO transmitter also realize the same effect. These effects can be categorized as a spatial smoothing preprocessing in transmitter. In this report, we analyze the spatial smoothing effect by transmitter in multipath environments. Theoretical and simulation results show that the transmitting-SSP has a good feature in comparison with the conventional (receiving) SSP. Furthermore, when we apply the transmitting-SSP and the receiving-SSP, we can obtain further decorrelation performance.