Rafay Iqbal Ansari

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This paper studies an energy-efficient scheme for cooperative multi-hop communications in a finite density opportunistic large array (OLA) network. In a cooperative OLA network, a group of nodes transmits the same message signal to another group of nodes, providing range extension and increased reliability by exploiting the spatial diversity in a wireless(More)
This paper studies an approach towards employing network coding in device-to-device (D2D) network. In a D2D network, the devices in proximity establish direct links for communication instead of utilizing the cellular links. In this paper, relay-aided network-coded (RANC) D2D network is compared with a simple relay-aided D2D network. A D2D network with three(More)
We consider nanonodes randomly distributed in a circular area and characterize the received signal strength when a pair of these nodes employ molecular communication. Two communication methods are investigated, namely free diffusion and diffusion with drift. Since the nodes are randomly distributed, the distance between them can be represented as a random(More)
This paper studies energy-efficient relay selection schemes for cooperative multi-hop device-to-device (D2D) networks. D2D networks exploit proximity gain by establishing direct links between devices instead of relying on cellular links for communication. We consider a D2D network with random deployment of relay nodes between the source and the destination.(More)
This thesis studies an energy-efficient scheme for cooperative multi-hop communications in a finite density opportunistic large array (OLA) network. In a cooperative OLA network, a group of nodes transmits the same message signal to another group of nodes, providing range extension and increased reliability by exploiting the spatial diversity in a wireless(More)
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