New approach to equalizing antenna elements: analysis and performance evaluation
Journal Title: Wireless Communication Technology - Year 2018, Vol 2, Issue 1
Abstract
The antenna face of a phased array radar typically consists of several hundred of antenna elements, and they degrade independently. This poses a challenging problem to radar target detection, discrimination, and classification, which rely on adaptive beamforming and assume that the channels are matched to each other. In this research, a channel equalization algorithm is developed compensating for the mismatch between the reference and testing channels using the least-squares error (LSE) criterion. The equalized output is precisely the projection of the reference channel data onto the columns of the equalization matrix, which is solely a function of the testing channel output. Through the analysis of the equalization matrix, the performance metrics including the squares error, instantaneous correlation coefficient, and cancellation ratio (CR) of the proposed equalizer are expressed in closed forms. The analysis also allows us to postulate on the effect of system parameters including: window size, equalizer length, and input signal-to-noise ratio (SNR) on the performance metrics. Extensive Monte Carlo simulations show that higher values of the equalizer length, input SNR, or window size improves the CR; however, once a system parameter approaches a certain threshold, further incrementing the size of these parameters has a diminishing return on system performance. Simulations also reveal that an equalizer with good CR or correlation coefficient results into the equalized testing channel output being almost a replica of the reference channel’s output. Correspondingly, degradation in the CR or correlation coefficient affects the equalized testing channel output. The simulation results agree closely with known theoretical analyses. The research in this paper demonstrates the importance of channel equalization and system parameter selection in obtaining a satisfactory antenna elements/subarrays output.
Authors and Affiliations
Pierre-Richard Cornely
Keywords
Related Articles
- EP ID EP679060
- DOI -
- Views 238
- Downloads 0
New approach to equalizing antenna elements: analysis and performance evaluation
The antenna face of a phased array radar typically consists of several hundred of antenna elements, and they degrade independently. This poses a challenging problem to radar target detection, discrimination, and classifi...
Multimodal biometric authentication algorithm at score level fusion using hybrid optimization
Biometric is emerging technology in identification and authentication of human being with more reliable and accurate. Combining multiple biometric systems is a promising solution to provide more security. It eliminates t...
Separable Reversible Data Hiding in an Encrypted Image
Since times immemorial, security of data to maintain its confidentiality, proper access control, integrity and availability has been a major issue in data communication. Today images and data transfer in mobile phone com...
Design and Performance Analysis of Blind Algorithm in Wireless Communication
In this paper, the concept of blind algorithm with automatic gain control (AGC) is introduced in adaptive antenna system for signal optimization with an aim is to estimate the desired response in adaptive fashion. Blind...
Single Fault tolerance Method for Protection Data Flow in the MPLS Network
This paper presents efficient methods for rerouting traffic in the Multiprotocol Label Switching (MPLS) network, when a fault occurs in the working link. The proposed methods have been designed to handle single fault bas...