Results 21 to 30 of about 1,180,225 (167)
DronesThis paper investigates the use of adaptive beamforming algorithms for communication systems and sensing networks using motion-dynamic distributed random arrays. These distributed arrays include swarms of unmanned aerial vehicles (UAVs) and are formed by
Rio King +3 more
doaj +1 more source
, 2008 —We consider beamforming assisted detection for multiple antenna aided multiuser systems that employ the bandwidth efficient quadrature amplitude modulation scheme.
Chen, Sheng +3 more
core +1 more source
CMA and soft decision-directed scheme for semi-blind beamforming of QAM systems
, 2008 We propose a semi-blind adaptive beamforming approach for wireless systems that employ high-throughput quadrature amplitude modulation signalling schemes.
Chen, Sheng, Hanzo, Lajos, Yao, Wang
core +2 more sources
Fast and robust adaptive beamforming method based on complex-valued RBF neural network
The Journal of Engineering, 2019 The adaptive beamforming is one of the key techniques for array signal processing. However, the matrix inversion operation in the existing methods will cost a large amount of computational complexity, which results in poor real-time processing ability ...
Yuqing Li, Xiaopeng Yang, Feifeng Liu
doaj +1 more source
Adaptive Minimum Bit Error Rate Beamforming Assisted QPSK Receiver
, 2004 A novel adaptive beamforming technique is proposed for wireless communication with quadrature phase shift keying signalling based on the minimum bit error rate (MBER) criterion.
S. Chen +7 more
core +2 more sources
Ultrasound nondestructive evaluation (NDE) imaging with transducer arrays and adaptive processing [PDF]
, 2012 This paper addresses the challenging problem of ultrasonic non-destructive evaluation (NDE) imaging with adaptive transducer arrays. In NDE applications, most materials like concrete, stainless steel and carbon-reinforced composites used extensively in ...
Hayward, G., Li, M. H.
core +4 more sources
Multi‐Dimensional Physical‐Layer Security via Digitally Mediated Space–Time Modulation
Advanced Science, EarlyView.Digitally mediated space–time modulation moves radiation control beyond hardware‐bound switching. Multiple information‐bearing and masking waveforms are jointly synthesized at baseband and coherently coupled to simple periodic time modulation, enabling programmable, independently directed multi‐beam radiation without increasing switching‐state ...
Kejin Chen +8 more
wiley +1 more source
Comparison of robust Capon beamforming based on weighted sparse constraints
上海师范大学学报. 自然科学版, 2020 The performance of several Capon adaptive beamforming algorithms which used the weighted sparse constraints were analyzed and compared.These algorithms using the sparse distribution characteristics of the antenna array gain would suppress side lobes ...
LIN Zhen, LI Li, WEI Shuang, LIANG Yan
doaj +1 more source
Advanced Science, EarlyView.Recent advances in metasurface‐enabled low‐observable technologies are reviewed from the perspective of cross‐scale material–structure synergy. Electromagnetic, thermal, optical, and acoustic stealth are highlighted together with dynamic tuning, programmable coding, data‐driven inverse design, artificial intelligence, multispectral compatibility, and ...
Shuhao Wang +5 more
wiley +1 more source
Beamforming Algorithm of LEO Satellite Communication System
天地一体化信息网络, 2022 The rapid development of broadband satellite internet has brought satellite communication into a new era.The establishment of large-scale low-orbit satellite constellations has gradually saturated spectrum resources, and the high overlap in frequency use
Haiwang WANG +5 more
doaj +2 more sources