Enhancement of system capacity is one of the objectives of the fifth generation (5G) networks in which deviceto-device (D2D) communications is anticipated to play a crucial role. This can be achieved by devising efficient resource allocation strategies for the D2D users. While most of the works in resource allocation assume full knowledge of the channel states, transmitting it in every time slo...

The Long term Evolution (LTE) and LTE – Advanced (LTE A) are provides the new communications such has Device to Device Communications (D2D), cellular networks direct transmission between the two are more devices. In this paper, we consider a system for D2D communication in cellular networks and minimizing the transmission power in Base station (BS). The D2D systems followed spectrum sharing pro...

During the last decade, the widespread use of smart devices and mobile applications has lead to a massive growth of the mobile traffic demand. Efficiency and scalability are therefore key criteria for the development of future cellular systems, in which device-to-device (D2D) communication is recognized as one of the promising technologies. D2D communication allows mobile users in physical prox...

Device-to-device (D2D) communication is a promising technology for the future wireless systems. It allows direct communication between devices, which provides improvements in terms of delay, throughput and energy consumption. Therefore, it can contribute to achieving the ambitious requirements of future 5G wireless system. In this sense, energy efficiency has become a key requirement in the des...

Device-to-device (D2D) communications have been identified by the Third Generation Partnership Project (3GPP) as a potential candidate technology to offload heavily used cellular communication systems. Even though D2D communications has been around in industry and research for the last two decades, the 3GPP decision to include this concept in the cellular context is groundbreaking. There are se...

Device-to-Device (D2D) communications are expected to improve user experience and network efficiency. Cellular and underlaying D2D communications will share the same cellular spectrum, and radio resource allocation policies are hence necessary to avoid their mutual interference. Most of the proposed policies are centralized schemes, and the base station decides the allocated radio resources. Ce...

In the evolution path towards the “Always-Connected” era and the trend for even more context-aware services, Device-to-Device communications (D2D) promise to be a key feature of the next-generation mobile networks. Despite remaining technical issues and uncertain business strategies, D2D-based services represent a new market opportunity for mobile operators that would manage to smoothly integra...

Device-to-device (D2D) communication is considered a promising technique to provide wireless peer-to-peer communication services. Due to increasing demand on mobile services, available spectrum for radio frequency (RF) based communications becomes scarce. Recently, visible light communications (VLC) has evolved as a high speed wireless data transmission technology for indoor environments with a...

For device-to-device (D2D) communications underlaying a cellular network with uplink resource sharing, both cellular and D2D links cause significant co-channel interference. In this paper, we address the critical issue of interference management in the network considering a practical path loss model incorporating both line-of-sight (LoS) and non-line-of-sight (NLoS) transmissions. To reduce the...

Offloading onto Device-to-Device (D2D) communications has been considered as a promising technology to alleviate the traffic load of cellular networks. However, the success of D2D communications actually relies on the willingness for users to share contents and operator’s incentives to tolerate interference in networks, which has been overlooked in most literature. We therefore propose an incen...