Results 91 to 100 of about 27,142 (205)

Adaptive Phase Rolling for Opportunistic Beamforming in OFDMA Systems with a Small Number of Users

The Scientific World Journal, 2014
The performance of opportunistic beamforming might be degraded if the number of users is small. This paper proposes an adaptive opportunistic beamforming technique for orthogonal frequency division multiple access systems, which can produce good results ...
Minjoong Rim
doaj   +1 more source

Sparsity-Based Non-Stationary Clutter Suppression Technique for Airborne Radar

IEEE Access, 2018
Conventional space-time adaptive processing (STAP) technique can achieve perfect performance when applied to side-looking airborne radar (SLAR), where the clutter is relatively stationary, whereas it suffers significant degradation for non-SLAR due to ...
Keqing Duan, Huadong Yuan, Hong Xu, Weijian Liu, Yongliang Wang   +4 more
doaj   +1 more source

Null Broadening Robust Adaptive Beamforming Algorithm Based on Power Estimation. [PDF]

Sensors (Basel), 2022
Yu Z, Cui W, Du Y, Ba B, Quan M.
europepmc   +1 more source

Adaptive Beamforming Based on Compressed Sensing with Smoothed l0 Norm

International Journal of Antennas and Propagation, 2015
An adaptive beamforming based on compressed sensing with smoothed l0 norm for large-scale sparse receiving array is proposed in this paper. Because of the spatial sparsity of the arriving signal, compressed sensing is applied to sample received signals ...
Yubing Han, Jian Wang
doaj   +1 more source

Adaptive Beamforming Approaches to Improve Passive Radar Performance in Sea and Wind Farms' Clutter. [PDF]

Sensors (Basel), 2022
Rosado-Sanz J, Jarabo-Amores MP, De la Mata-Moya D, Rey-Maestre N.   +3 more
europepmc   +1 more source

Distributionally Robust Adaptive Beamforming

IEEE Transactions on Signal Processing
As a fundamental technique in array signal processing, beamforming plays a crucial role in amplifying signals of interest (SoI) while mitigating interference plus noise (IPN). When uncertainties exist in the signal model or the data size of snapshots is limited, the performance of beamformers significantly degrades.
Shixiong Wang, Wei Dai, Geoffrey Ye Li
openaire   +2 more sources

Robust beamforming based on the worst-case performance optimization with positive semi-definite constraints

Tongxin xuebao, 2013
For the robust adaptive beamforming problem of the gen l signal models, a robust beamforming algorithm based on the worst-case performance optimization with positive semi-definite constraints was proposed.
Ding-jie XU, Rui HE, Feng SHEN
doaj   +2 more sources

Subaperture Processing-Based Adaptive Beamforming for Photoacoustic Imaging. [PDF]

IEEE Trans Ultrason Ferroelectr Freq Control, 2021
Mukaddim RA, Ahmed R, Varghese T.
europepmc   +1 more source

Robust Adaptive Beamforming Algorithm for Sparse Subarray Antenna Array Based on Hierarchical Weighting. [PDF]

Micromachines (Basel), 2022
Yang J, Liu X, Tu Y, Li W.
europepmc   +1 more source

Direction-of-Arrival Estimation for a Floating HFSWR Through Iterative Adaptive Beamforming of Focusing Concept

Remote Sensing
Floating high-frequency surface-wave radar provides an effective solution to widening the range of detection by such radar systems. However, for high-frequency radars with long coherence integration times, the yaw angle variations during this period can ...
Xianzhou Yi, Min Qu, Zhihui Li, Shuyun Shi, Li Wang, Xiongbin Wu, Liang Yu   +6 more
doaj   +1 more source