Investigation of Device-to-Device Communication in 5G mmWave Network using an Uplink Channel
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Date
2022
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Department of Electronics and Communication Engineering, NITS
Abstract
The exponentially growing need for higher data rates and the ubiquitous usage of smartphones has arisen unprecedented issues in providing seamless communication while satisfying band width constraints. Enabling device-to-device (D2D) communication in the mmWave network enhances throughput and bandwidth but at the cost of higher pathloss attenuation. Also, D2D communication introduces interference in the traditional cellular network, thereby lowering system performance. Thus, the proposed work applies dynamic mode selection criteria for effi cient D2D communication in 5G mmWave cellular network. Radius of coverage of D2D users are derived for switching of inner mode to outer mode. It switches to the outer mode when the D2D users suffer from extensive pathloss attenuation along with an increase in radius of cover age. Furthermore, power optimization is done for obtaining optimal D2D transmit power which in turn enhances the data rate, solved by Lagrangian dual optimization technique. The perfor mance metric, coverage probability is derived which depicts the capability of the proposed scheme at higher pathloss attenuation by maintaining the quality-of-service (QoS) constraint. Simulation results prove the efficacy of the proposed scheme. Furthermore, the work also con siders a multicell scenario-based resource allocation for interference mitigation for D2Ds in the edge region. Thus, based on our system model and assuming that only outer region D2Ds can share the resources of inner region cellular users found, the signal-to-interference-ratio (SINR) calculation is done. Furthermore, the coverage probability is calculated using cumulative dis tribution function (CDF) and also the mathematical analysis of area spectral efficiency (ASE) is calculated to maximize the throughput