Results 21 to 30 of about 137,716 (306)
Multiple access spatial modulation [PDF]
EURASIP Journal on Wireless Communications and Networking, 2012 In this study, we seek to characterise the behaviour of Spatial modulation (SM) in the multiple access scenario. By only activating a single transmit antenna for any transmission, SM entirely avoids inter-channel interference, requires no synchronisation between the transmit antennas and a single radio frequency chain at the transmitter.
Nikola Serafimovski +3 more
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ISPRS International Journal of Geo-Information, 2022 Assessing park accessibility plays an essential role in providing rational recreational services for residents in a city. The perceptions and comments of residents are also important nonspatial factors for accessibility.
Shijia Luo +6 more
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ISPRS International Journal of Geo-Information, 2023 With the rapid growth of aging populations in South Korea, it is important to assess spatial accessibility to healthcare resources as older adults may need frequent visits to hospitals.
Jeon-Young Kang +4 more
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Spatial Spectrum Access Game [PDF]
IEEE Transactions on Mobile Computing, 2015 A key feature of wireless communications is the spatial reuse. However, the spatial aspect is not yet well understood for the purpose of designing efficient spectrum sharing mechanisms. In this paper, we propose a framework of spatial spectrum access games on directed interference graphs, which can model quite general interference relationship with ...
Xu Chen 0004, Jianwei Huang 0001
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International Journal for Equity in Health, 2020 Background Spatial accessibility to healthcare facilities has drawn much attention in health geography. In China, central and local governments have aimed to develop a well-organized hierarchical system of healthcare facilities in recent years.
Zhuolin Tao, Yang Cheng, Jixiang Liu
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IEEE Access, 2021 Equitable access to efficient medical services via public transport has always been one of the most important issues of healthcare in urban development.
Xin Fu +5 more
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Spatially-coupled random access on graphs [PDF]
2012 IEEE International Symposium on Information Theory Proceedings, 2012 In this paper we investigate the effect of spatial coupling applied to the recently-proposed coded slotted ALOHA (CSA) random access protocol. Thanks to the bridge between the graphical model describing the iterative interference cancelation process of CSA over the random access frame and the erasure recovery process of low-density parity-check (LDPC ...
G. Liva +3 more
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Optimizing memory accesses for spatial computation [PDF]
International Symposium on Code Generation and Optimization, 2003. CGO 2003., 2003 We present the internal representation and optimizations used by the CASH compiler for improving the memory parallelism of pointer-based programs. CASH uses an SSA-based representation for memory, which compactly summarizes both control-flow- and dependence information.
Mihai Budiu, Seth Copen Goldstein
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Land, 2023 As a type of public land, park green spaces (PGSs) carry the daily recreation and social communication of urban residents, and the inequity of their space accessibility has been widely confirmed. However, the optimized suggestions based on evaluations of
Lei Mu +3 more
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Analysis of social and spatial accessibility of educational services in the municipalities of Płock district [PDF]
Acta Scientiarum Polonorum. Formatio Circumiectus, 2018 The issue addressed in the present paper deals with spatial accessibility of the basic public education services, which is an important element determining the level of social development of a region and the quality of life of the residents.
Konrad Podawca, Agata Pawłat-Zawrzykraj
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