Results 31 to 40 of about 13,625 (199)
IEEE Access, 2018 Device-to-device (D2D) communications, which can increase system throughput, allow two cellular devices to communicate directly with each other. Compared with half-duplex relay, full-duplex relay can significantly improve the spectrum efficiency if the ...
Ruirui Chen, Yanjing Sun, Tao Li
doaj +1 more source
Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage [PDF]
, 2017 Because of the short battery life of user equipments (UEs), and the requirements for better quality of service have been more demanding, energy efficiency (EE) has emerged to be important in device-to-device (D2D) communications.
Nguyen, Hoang-Sy +2 more
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D2D Communications Underlaying Wireless Powered Communication Networks
IEEE Transactions on Vehicular Technology, 2018 In this paper, we investigate the resource allocation problem for D2D communications underlaying wireless powered communication networks, where multiple D2D pairs harvest energy from a power station equipped with multiple antennas and then transmit information signals simultaneously over the same spectrum resource.
Haichao Wang +3 more
openaire +2 more sources
Performance Analysis of Network-Assisted Two-Hop D2D Communications
, 2014 Network-assisted single-hop device-to-device (D2D) communication can increase the spectral and energy efficiency of cellular networks by taking advantage of the proximity, reuse, and hop gains when radio resources are properly managed between the ...
Fodor, Gabor +2 more
core +1 more source
Device-to-Device Communications Enabled Energy Efficient Multicast Scheduling in mmWave Small Cells
, 2017 To keep pace with the rapid growth of mobile traffic demands, dense deployment of small cells in millimeter wave (mmWave) bands has become a promising candidate for next generation wireless communication systems.
Chen, Xinlei +5 more
core +1 more source
Secure communications with D2D cooperation
2015 International Conference on Communications, Signal Processing, and their Applications (ICCSPA'15), 2015 Device to Device (D2D) communications provides a promising technique for 5G wireless networks, supporting higher data rates. Security of data transmission over wireless clouds could put constraints on devices; whether to cooperate or not. Therefore, our aim is to provide analytical framework for the security at the physical layer and to define the ...
Samah A. M. Ghanem, Munnujahan Ara
openaire +3 more sources
IEEE Access, 2018 Device-to-device (D2D) communications is a promising approach for wireless communications in terms of energy and spectrum efficiency. However, such communications increase interferences in a cellular network.
Romain Chevillon +3 more
doaj +1 more source
Algorithms, 2015 In Long Term Evolution-Advanced (LTE-A) networks, Device-to-device (D2D) communications can be utilized to enhance the performance of multicast services by leveraging D2D relays to serve nodes with worse channel conditions within a cluster.
Yong Zhang, Fangmin Li
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Algorithms, 2021 Device-to-Device (D2D) communications, which enable direct communication between nearby user devices over the licensed spectrum, have been considered a key technique to improve spectral efficiency and system throughput in cellular networks (CNs). However,
Qiuqi Han, Guangyuan Zheng, Chen Xu
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Cellular-Base-Station Assisted Device-to-Device Communications in TV White Space
, 2015 This paper presents a systematic approach to exploit TV white space (TVWS) for device-to-device (D2D) communications with the aid of the existing cellular infrastructure.
Ding, Guoru +5 more
core +1 more source