Beamforming Robust in Interferer Direction of Arrival Uncertainties with Side lobes Level Control

Message:
Article Type:
Research/Original Article (بدون رتبه معتبر)
Abstract:

One of the ways to deal with the effect of jammers, especially intra-band jammers, is to use beamforming (BF) in multi-antenna systems. In this method, based on the DOA of desired signal and DOA of interference, it is tried to design peak of beam pattern in the direction of the desired source and null of pattern in the direction of interferer. Since the depth of null and its location depend on the direction of interferer and in practice, it is not possible to obtain accurate information from electronic support measure (ESM) system, in this paper, a beamforming method which is robust to DOA estimation error has been proposed. Furthermore, nulling the interferer’s direction results in side lobes level increment. This can decreas communication systems performance. So, in adition to robust jammer nulling, the side lobe level of considered directions is controlled, too. In this paper, three BF weights optimization from three points of view are defined and solved analytically based on convex optimization framework. Simulation results show that proposed method is more efficient than previous and traditional methods. The proposed method keeps SINR in the order of SNR which can be obtained by DOA estimation error free methods.

Language:
Persian
Published:
Journal of Innovations of Aplied Information and Communication Technology, Volume:1 Issue: 4, 2023
Pages:
45 to 59
magiran.com/p2601923  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 1,390,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!