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LTE uses single carrier-frequency division multiple access (SC-FDMA) scheme for the uplink transmission which limits the flexibility of the allocation process as the sub carriers assigned to a single user have to be contiguous. We propose an LTE uplink interference-aware search-tree based scheduling scheme using the high interference indicator (HII) and the overload indicator (OI) messages that are...
In this paper, we investigate the effects of interference among the cell edge users under cooperative non-orthogonal multiple access (NOMA) system. The base stations (BSs) cooperative with each other for downlink transmission. The information rate of cell-edge users (CEU) are derived for two system models: first model with inter-user (i.e., Users on the same cell edge) interference only and second...
The concept of Device-to-Device (D2D) communication has been introduced for local area connectivity as a means to improve the cellular spectrum utilization and to reduce the energy consumption of user equipments. The performance of D2D communication is practically limited due to large distance and/or poor channel conditions between the D2D transmitter and receiver. To overcome these issues, a relay-assisted...
We describe a deterministic and a randomized distributed algorithm for computing a spanning tree over a wireless network whose weight approximates the weight of a Minimum Spanning Tree (MST). The network is composed of n static nodes embedded in a 2-dimensional Euclidean space which communicate according to the Signal-to-Interference- and-Noise Ratio (SINR) model. Under the assumption that each node...
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