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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wenlong Liu Shuxue Ding |
| Copyright Year | 2007 |
| Description | Author affiliation: Dalian Univ. of Technol., Dalian (Wenlong Liu) |
| Abstract | Minimum variance distortionless response (MVDR) beamformer are known to degrade due to the effects of imprecise knowledge about the steering vector and finite sample size. The diagonal loading method is a simple and efficient method that improves the robustness of beamformers. However, determining an ideal diagonal loading factor (DLF) is not a trivial problem, one that still has not been adequately addressed. Although beamformers are widely used in radar, sonar, and many other applications, in this paper, we consider only the pulse-amplitude modulation (PAM) digital communication applications. In this paper we take advantage of the binary feature in PAM digital communication system and present an effective method to determine the DLF. Since the binary feature is used, the new method does not require extra assumptions as in other methods. Numerical experiments show that the method improves the robustness of beamformers against mismatch caused by effects related to imprecise knowledge of the steering vector and finite sample size. |
| Starting Page | 116 |
| Ending Page | 121 |
| File Size | 279615 |
| Page Count | 6 |
| File Format | |
| ISBN | 9780769529837 |
| DOI | 10.1109/CIT.2007.114 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-10-16 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Degradation Uncertainty Sonar Digital communication Robustness Calibration Radar applications Pulse modulation Information technology Signal to noise ratio |
| Content Type | Text |
| Resource Type | Article |
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