Results 11 to 20 of about 17,613 (262)
Sparse array of sub-surface aided blockage-free multi-user mmWave communication systems
Digital Communications and Networks, 2020 Recently, Reconfigurable Intelligent Surfaces (RISs) have drawn intensive attention in the realization of the smart radio environment. However, existing works mainly consider the RIS as a whole uniform plane, which may be unrealistic to be installed on ...
Weicong Chen +3 more
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All-Optical Distributed MIMO for LiFi: Spatial Diversity Versus Spatial Multiplexing
IEEE Access, 2022 LiFi or networked optical wireless communication is likely to play an important role in offloading mobile data traffic from radio into the optical spectrum.
Sepideh Mohammadi Kouhini +7 more
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Applied Sciences, 2016 We present a spatial frequency domain multiplexing method for extending the imaging depth range of a spectral domain optical coherence tomography (SDOCT) system without any expensive device. This method uses two galvo scanners with different pivot-offset
Tong Wu +5 more
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MIMO Channel Gain Mechanisms Relative to SISO Channel
The Journal of Engineering Research, 2010 In contrast to the rest of wireless communication technologies, multiple-input multiple-output (MIMO) technology enjoys different gain mechanisms that make it very attractive for reliable high data rate wireless communications.
A. A. Abouda, N.G. Tarhuni
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MIMO-OFDM equaliser for spatial multiplexing transmission modes [PDF]
Advances in Radio Science, 2010 In search for faster and more reliable communication, multiple-input multiple-output (MIMO) in conjuction with Orthogonal Frequency Division Multiplexing (OFDM) are subject of extensive research. In spatial multiplexing transmission an instantaneous rise
P. Beinschob, U. Zölzer
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Sensors, 2023 In the domain of optical fiber distributed acoustic sensing, the persistent challenge of extending sensing distances while concurrently improving spatial resolution and frequency response range has been a complex endeavor.
Zhengyang Li +5 more
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Design of Joint Spatial and Power Domain Multiplexing Scheme for Massive MIMO Systems
International Journal of Antennas and Propagation, 2015 Massive Multiple-Input Multiple-Output (MIMO) is one of the key techniques in 5th generation wireless systems (5G) due to its potential ability to improve spectral efficiency. Most of the existing works on massive MIMO only consider Time Division Duplex (
Zheng Jiang +4 more
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Photonic Discrete-time Quantum Walks and Applications
Entropy, 2018 We present a review of photonic implementations of discrete-time quantum walks (DTQW) in the spatial and temporal domains, based on spatial- and time-multiplexing techniques, respectively.
Leonardo Neves, Graciana Puentes
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Analysis and Evaluation of Performance Gains and Tradeoffs for Massive MIMO Systems
Applied Sciences, 2016 Massive MIMO technique offers significant performance gains for the future of wireless communications via improving the spectral efficiency, energy efficiency and the channel quality with simple linear processing such as maximum-ratio transmission (MRT ...
Saba Qasim Jabbar, Yu Li
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Compact spatial multiplexers for mode division multiplexing
Optics Express, 2014 Spatial multiplexer (SMUX) for mode division multiplexing (MDM) has evolved from mode-selective excitation, multiple-spot and photonic-lantern based solutions in order to minimize both mode-dependent loss (MDL) and coupler insertion loss (CIL). This paper discusses the implementation of all the three solutions by compact components in a small footprint.
Chen, Haoshuo +3 more
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