Abstract
Based on software-defined radio (SDR) architecture, a multiple-null digital beam former (DBF) that can adjust the number, width and depth of the nulls in accordance with the environment requirements is realized using the field programmable gate array (FPGA) to improve the interference cancellation capability of the two-dimensional array antennas. The hardware reconfiguration feature of SDR architecture can support multiple modes of the DBF striving for compactness and efficient processing power. The Howells-Applebaum algorithm, eigen value decomposition (EVD) and principal component methods are employed to derive the optimal weighting matrix of the multiple-null DBF and simplify the computation of inverse interference covariance matrix, which can be implemented with the parallel processing architecture. If there is no jamming occurred, the DBF returns to its normal beam pattern. Finally, the simulations demonstrate the robustness of the interference cancellation of the multiple-null DBF for a 16 by 16 phase array antenna.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
