NDLI: Novel Adaptive Antenna Array Based on Robust Semidefinite Programming

Content Provider	IEEE Xplore Digital Library
Author	Zhu Liang Yu Wee Ser Meng Hwa Er
Copyright Year	2008
Description	Author affiliation: Sch. of EEE, Nanyang Technol. Univ., Singapore (Zhu Liang Yu; Wee Ser; Meng Hwa Er)
Abstract	In this paper, a novel robust adaptive beamformer is proposed based on semidefinite programming (SDP) and worst- case optimization. With the SDP formulation, the array output power and magnitude response can be expressed as linear functions. New constraints on magnitude response are introduced in the adaptive array. The proposed method can flexibly control the robust response region with a specific beamwidth and response ripple. In practical applications, the array suffers from having not only steering direction error, but also many other array imperfections. To make the adaptive beamformer robust against all kinds of array imperfections, the worst-case optimization technique is proposed to reconstruct the beamformer. By minimizing the array output power with respect to the worst-case effect of array imperfections, the resultant beamformer possesses superior robustness against arbitrary array imperfections. Since the constraints on magnitude response are inequality constraints, most of them are inactive in the optimization process so that few degrees of freedom (DOFs) of the adaptive beamformer are consumed. Consequently, the resultant beamformer has high performance on signal-to-interference-plus-noise ratio (SINR) improvement. Simple implementation, flexible performance control as well as significant SINR enhancement support the practicability of the proposed method.
Starting Page	825
Ending Page	829
File Size	158292
Page Count	5
File Format	PDF
ISBN	9781424420759
DOI	10.1109/ICC.2008.162
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Adaptive arrays Antenna arrays Robustness Sensor arrays Microphone arrays Power generation Robust control Signal to noise ratio Interference constraints Vectors
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in