Performance Analysis of Device-to-Device Communications in Cellular Networks Under Varying Load Conditions Priyadarshi Ashok Dahat 1 • Suvra Sekhar Das 1 Ó Springer Science+Business Media New York 2015 Abstract Device-to-device (D2D) communications is identified as potential technology for future cellular networks. It is a promising concept to provide the high data rate re- quirements for bandwidth hungry applications like social networking, multimedia services etc. It facilitates better utilization of radio resources and shorter transmitter receiver delays and therefore better user performance. In this paper framework for studying performance of D2D communications in orthogonal frequency division multiple access based multi- cellular scenario is developed using downlink cellular resources. The load condition of D2D mode in addition to that of cellular mode plays an important role. The performance of both modes for their respective load conditions have been analyzed. The key parameters analysed are ratio of signal power to noise plus interference power (SINR), outage pro- babilty, effect of variation in D2D transmitter power, capacity, mode selection and D2D mode switching distance. The goal of the paper is to find the optimum distance for switching to D2D mode from cellular mode for loads with different power ratios. The results shows that D2D communications is beneficial for cellular edge UEs and improves their capacity. It is seen that with increase in load in both the cellular and D2D modes the corresponding link capacity falls. It is also seen that as the cellular load increases, the switching distance moves away from BS while it moves towards the BS when the D2D load increases. Keywords Cellular load Device-to-device communications D2D load Mode selection Multicellular system Switching distance & Priyadarshi Ashok Dahat [email protected]; [email protected]Suvra Sekhar Das [email protected]1 G. S. Sanyal School of Telecommunications, Indian Institute of Technology, Kharagpur, India 123 Wireless Pers Commun DOI 10.1007/s11277-015-2501-4
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Performance Analysis of Device-to-DeviceCommunications in Cellular Networks Under VaryingLoad Conditions
Priyadarshi Ashok Dahat1• Suvra Sekhar Das1
� Springer Science+Business Media New York 2015
Abstract Device-to-device (D2D) communications is identified as potential technology
for future cellular networks. It is a promising concept to provide the high data rate re-
quirements for bandwidth hungry applications like social networking, multimedia services
etc. It facilitates better utilization of radio resources and shorter transmitter receiver delays
and therefore better user performance. In this paper framework for studying performance
of D2D communications in orthogonal frequency division multiple access based multi-
cellular scenario is developed using downlink cellular resources. The load condition of
D2D mode in addition to that of cellular mode plays an important role. The performance of
both modes for their respective load conditions have been analyzed. The key parameters
analysed are ratio of signal power to noise plus interference power (SINR), outage pro-
babilty, effect of variation in D2D transmitter power, capacity, mode selection and D2D
mode switching distance. The goal of the paper is to find the optimum distance for
switching to D2D mode from cellular mode for loads with different power ratios. The
results shows that D2D communications is beneficial for cellular edge UEs and improves
their capacity. It is seen that with increase in load in both the cellular and D2D modes the
corresponding link capacity falls. It is also seen that as the cellular load increases, the
switching distance moves away from BS while it moves towards the BS when the D2D
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Priyadarshi Ashok Dahat received his B.E. degree in Electronics andCommunications Engineering in 1999 from the Malaviya NationalInstitute of Technology, Jaipur - India and M.E. degree in ElectronicsEngineering (spl. Digital Communication) from Devi Ahilya Univer-sity Indore in 2008. He has been Assistant Professor at Devi AhilyaUniversity Indore. He is currently a Ph.D. scholar at G.S.Sanyal Schoolof Telecommunications, Indian Institute of Technology Kharagpur -India since 2011. His research interests is wireless communication andincludes OFDM based systems, adhoc networks and device-to-devicecommunications (D2D) in cellular systems.
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Dr. Suvra Sekhar Das obtained his B.Eng. degree in Electronics andCommunication Engineering from Birla Institute of Technology,Mesra, Ranchi, India in the year 2000. He completed PhD at AalborgUniversity in 2007. He worked as senior scientist at Innovation Lab ofTata Consultancy Services (TCS), from 2000 to 2008. He is currentlyAssistant Professor in the Department of Electronics and ElectricalCommunication Engineering as well as in the G. S. Sanyal School ofTelecommunications at IIT Kharagpur. His research interest is in crosslayer optimization of mobile broadband cellular networks.
Performance Analysis of Device-to-Device Communications...