tailieunhanh - Báo cáo hóa học: " Research Article Blind PARAFAC Signal Detection for Polarization Sensitive Array"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Blind PARAFAC Signal Detection for Polarization Sensitive Array | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 12025 7 pages doi 2007 12025 Research Article Blind PARAFAC Signal Detection for Polarization Sensitive Array Xiaofei Zhang and Dazhuan Xu Electronic Engineering Department Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Received 27 September 2006 Revised 22 January 2007 Accepted 16 April 2007 Recommended by Nicola Mastronardi This paper links the polarization-sensitive-array signal detection problem to the parallel factor PARAFAC model which is an analysis tool rooted in psychometrics and chemometrics. Exploiting this link it derives a deterministic PARAFAC signal detection algorithm. The proposed PARAFAC signal detection algorithm fully utilizes the polarization spatial and temporal diversities and supports small sample sizes. The PARAFAC algorithm does not require direction-of-arrival DOA information and polarization information so it has blind and robust characteristics. The simulation results reveal that the performance of blind PARAFAC signal detection algorithm for polarization sensitive array is close to nonblind MMSE method and this algorithm works well in array error condition. Copyright 2007 X. Zhang and D. Xu. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Polarization sensitive arrays have some inherent advantages over traditional antenna arrays since they have the capability of separating signals based on their polarization characteristics as well as spatial diversity. Intuitively polarization sensitive antenna arrays will provide significant improvements for signals which have different polarization characteristics. Polarization sensitive arrays are used widely in the communication radio and navigation 1 2 . Maximum likelihood signal .