Decorrelation Performance of Spatial Smoothing Preprocessing at Transmitter in the Presence of Multipath Coherent Waves
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- ENDO Natsumi
- the Graduate School of Science & Technology, Niigata University
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- YAMADA Hiroyoshi
- the Faculty of Engineering, Niigata University
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- YAMAGUCHI Yoshio
- the Faculty of Engineering, Niigata University
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Abstract
Direction of arrival estimation of coherent multipath waves by using superresolution technique often requires decorrelation preprocessings. Spatial smoothing preprocessings are the most popular schemes as the techniques. In mobile environment, position change of the target/transmitter often brings us decorrelation effect. In addition, multiple signals transmitted by an antenna array, such as a MIMO transmitter, can also cause the same effect. These effects can be categorized as the spatial smoothing preprocessing at the transmitter. In this paper, we analyze the spatial smoothing effect at the transmitter in the presence of multipath coherent waves. Theoretical and simulation results show that the spatial smoothing at the transmitter has a good feature in comparison with the conventional SSP at the receiving array. We also show that better decorrelation performance can be obtained when the SSPs at the transmitter and receiving array are applied simultaneously.
Journal
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- IEICE transactions on communications
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IEICE transactions on communications 90 (9), 2297-2302, 2007-09-01
The Institute of Electronics, Information and Communication Engineers
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Details 詳細情報について
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- CRID
- 1572824502386672256
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- NII Article ID
- 110007541037
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- NII Book ID
- AA10826261
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- ISSN
- 09168516
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- Text Lang
- en
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- Data Source
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- CiNii Articles