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Yanwei Li (Tianjin University), Gaotao Shi1
Estimated H-index: 1
(Tianjin University),
Xiaobo Zhou (Tianjin University)... more
Recently, RSS fingerprint-based location has been considered as a low-complexity solution for indoor localization. However, constructing a fingerprint map requires a great amount of manual effort to achieve a high location accuracy. In this paper, we present a refinement method to reduce the necessary manual effort without degrading the location accuracy. This method transforms a coarse-gained fingerprint map containing only a small number of offline samples into a high-density fingerprint map b...
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Jonghyun Kim4
Estimated H-index: 4
,
Stephan Bohacek16
Estimated H-index: 16
(University of Delaware)
Network flooding is the key mechanism designed to reach mobile nodes and disseminate the information in MANETs. Increasing the number of floods is a good way to improve coverage, namely, the fraction of nodes that receive the flooding message. However, this also will increase the overhead and hence the interference. In this paper, we used two different methods of refloods/retransmissions; originator-based retransmissions, where the originator of a message will retransmit the same message, and re...
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Pampa Sadhukhan4
Estimated H-index: 4
(Jadavpur University)
Localization is highly required to develop the smart-phone based pervasive computing applications. Because of very poor signal strength of global positioning system in indoor areas, various indoor localization systems have been proposed in literature. Among these, received signal strength (RSS) based fingerprinting localization systems are very popular. However, these localization systems at first, need to construct a fingerprint database by collecting RSS patterns at a set of known training loc...
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Yue Wang1
Estimated H-index: 1
,
Jilei Yan1
Estimated H-index: 1
,
Dandi Li ... more
This paper studies the energy efficient joint user scheduling and transmit beamforming in the downlink of a single-cell distributed antenna system. Due to the distributed nature of antenna units, traditional power consumption model cannot be applied without the backhauling power taken into account. Therefore, under the constraints of the minimum rate requirement of each user and the transmit power budget of each distributed antenna unit, we maximize the system energy efficiency through making a ...
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Siming Peng2
Estimated H-index: 2
(University of Science and Technology, Sana'a),
Zhigang Yuan (University of Science and Technology, Sana'a)
Nonlinear companding transform is a promising technique for the peak-to-average power ratio (PAPR) reduction in multicarrier transmission systems. However, conventional hard piecewise companding schemes often along with serious nonlinear distortion or complex companding parameters optimization embarrassment. In this paper, a novel designing criterion of nonlinear companding functions with more effective system performance is proposed. By transforming the Gaussian-distributed multicarrier signals...
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Subha Ghosh (Islamic Azad University), Debashis De5
Estimated H-index: 5
(Islamic Azad University),
Priti Deb1
Estimated H-index: 1
(Islamic Azad University)
... more
The rapid escalation of user traffic and service innovation has made the deployment of small cell base stations essential for eventually decreasing energy consumption in future generation wireless network. An energy efficient small cell zooming strategy is proposed using weighted majority cooperative game for two-tier fifth generation (5G) mobile network. The proposed strategy is referred as ‘5G-ZOOM-Game’. Small cells ‘zoom in’ and ‘zoom out’ dynamically according to the proposed ‘5G-ZOOM-Game’...
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Karim H. Moussa2
Estimated H-index: 2
,
Said E. El-Khamy14
Estimated H-index: 14
(Alexandria University)
The joint beam-forming and antenna selection problem encountered in modern multi-user massive multiple input multiple output (MIMO) communication systems is solved using the projected fast iterative shrinkage–thresholding algorithm (ISTA). The algorithm aim is to find the suboptimal set of transmitting antennas and to calculate the suboptimal beamforming weights which maximize the users’ achievable data rates. These requirements should be achieved quickly to maintain the system quality and relia...
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Nastooh Taheri Javan7
Estimated H-index: 7
(Amirkabir University of Technology),
Masoud Sabaei9
Estimated H-index: 9
(Amirkabir University of Technology),
Mehdi Dehghan65
Estimated H-index: 65
(Amirkabir University of Technology)
Any properly designed network coding technique can result in increased throughput and reliability of multi-hop wireless networks by taking advantage of the broadcast nature of wireless medium. In many inter-flow network coding schemes nodes are encouraged to overhear neighbour’s traffic in order to improve coding opportunities at the transmitter nodes. A study of these schemes reveal that some of the overheard packets are not useful for coding operation and thus this forced overhearing increases...
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Chung-Nan Lee (National Sun Yat-sen University), Jun-Hong Lin (National Sun Yat-sen University), Chih-Feng Wu (National Sun Yat-sen University)... more
With the ever-growing popularity of wireless multimedia services, wireless network base stations are increasingly likely to overload in high population density areas. An economical means exists for operators to establish more picocells in order to reduce the user traffic load on base stations and increase system capacity; however, inter-cell interference is a challenge in such heterogeneous networks. This study proposes a novel scheme that integrates dynamic cell range expansion (CRE) and dynami...
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Roger Immich5
Estimated H-index: 5
(National Council for Scientific and Technological Development),
Eduardo Cerqueira17
Estimated H-index: 17
(Federal University of Pará),
Marilia Curado14
Estimated H-index: 14
(University of Coimbra)
The adoption of video-equipped vehicles in Vehicular ad-hoc networks (VANETs) is experiencing a rapid growth. It is also anticipated a substantial increase in the video content distribution with the arrival of self-driving cars as both passengers and vehicles will be able to produce and consume this type of media. This unveils a set of challenges, especially in VANETs where the network resources tend to be scarce and the connections suffer from time-varying error conditions. Taking everything in...
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