Results 51 to 60 of about 190,116 (291)

Through-the-Wall Image Reconstruction via Reweighted Total Variation and Prior Information in Radio Tomographic Imaging

IEEE Access, 2020
This paper focuses on the application of radio tomographic imaging in through-the-wall image reconstruction. By using the simple wireless communication devices, e.g., Wi-Fi cards, the whole building layout can be reconstructed with only the received ...
Qichang Guo, Yanlei Li, Xingdong Liang, Jiawei Dong, Ruichang Cheng   +4 more
doaj   +1 more source

Optimal Tx-BF for MIMO SC-FDE Systems

, 2013
Transmit beamforming (Tx-BF) for multiple-input multiple-output (MIMO) channels is an effective means to improve system performance. In frequency-selective channels, Tx-BF can be implemented in combination with single-carrier frequency-domain ...
Bhargava, Vijay K., Schober, Robert, Wu, Peiran   +2 more
core   +1 more source

Robust MMSE beamforming for multiantenna relay networks [PDF]

, 2016
In this paper, we propose a robust minimum mean square error (MMSE) based beamforming technique for multiantenna relay broadcast channels, where a multi-antenna base station transmits signal to single antenna users with the help of a multiantenna relay ...
Chen, Hsiao-Hwa, Cumanan, Kanapathippillai, Ding, Zhiguo, Mortazawi Molu, Mehdi, Rahulamathavan, Yogachandran   +4 more
core   +2 more sources

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Multidimensional Optimal Signal Constellation Sets and Symbol Mappings for Block-Interleaved Coded-Modulation Enabling Ultrahigh-Speed Optical Transport

IEEE Photonics Journal, 2014
In this paper, we introduce the optimal signal constellation design (OSCD) in both 2-D and multidimensional cases, which is obtained by minimization of mean square error of optimal source distribution.
Tao Liu, Ivan B. Djordjevic
doaj   +1 more source

An Efficient Interference-Aware Constrained Massive MIMO Beamforming for mm-Wave JSDM

IEEE Access, 2021
Low-complexity beamformer design with practical constraints is an attractive research area for hybrid analog/digital systems in mm-wave massive multiple-input multiple-output (MIMO).
Murat Bayraktar, Gokhan M. Guvensen
doaj   +1 more source

Improved Linear Precoding over Block Diagonalization in Multi-cell Cooperative Networks [PDF]

, 2012
In downlink multiuser multiple-input multiple-output (MIMO) systems, block diagonalization (BD) is a practical linear precoding scheme which achieves the same degrees of freedom (DoF) as the optimal linear/nonlinear precoding schemes.
Guan, Yong Liang, Gunawan, Erry, Zeng, Yong   +2 more
core  

LOFAR Sparse Image Reconstruction [PDF]

, 2015
Context. The LOw Frequency ARray (LOFAR) radio telescope is a giant digital phased array interferometer with multiple antennas distributed in Europe. It provides discrete sets of Fourier components of the sky brightness.
Anderson, J., Avruch, I., Beck, R., Bentum, M., Best, P., Breitling, F., Broderick, J., Brüggen, M., Butcher, H., Ciardi, B., Corbel, S., de Gasperin, F., de Geus, E., de Vos, M., Duscha, S., Eislöffel, J., el, J., Engels, D., ey, V., ey-Pommier, M., Falcke, H., Fallows, R., Fender, R., Ferrari, C., Frieswijk, W., Garrett, M., Garsden, H., Girard, J., Grießmeier, J., Gunst, A., Hassall, T., Heald, G., Hoeft, M., Hö,, Juette, E., Karastergiou, A., Kondratiev, V., Kramer, M., Kuniyoshi, M., Kuper, G., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., McKean, J., Mulcahy, D., Munk, H., Norden, M., Orru, E., Paas, H., Pietka, G., Pizzo, R., Polatidis, A., Renting, A., Rowlinson, A., Röttgering, H., Schwarz, D., Sluman, J., Smirnov, O., Stappers, B., Starck, J., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Tang, Y., Tasse, C., Tasse, C., Thoudam, S., Toribio, C., van Amesfoort, A., van der Horst, A., van Weeren, R., Vermeulen, R., Vocks, C., Wijnholds, S., Wise, M., Woiselle, A., Wucknitz, O., Yatawatta, S., Zarka, P., Zensus, A.   +81 more
core   +4 more sources

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Energy efficiency optimization method for multi-user simultaneous wireless information and power transfer

Dianxin kexue, 2016
Joint transceiver design for achieving energy efficiency maximization was studied in multi-user downlink systems with simultaneous wireless information and power transfer. An improved Dinkelbach method was proposed. Specifically, the problem is converted
Chao CHEN, Cheng PENG, Shengli ZHOU, Bo PAN   +3 more
doaj   +2 more sources