Power Control in D2D-Based Vehicular Communication Networks

This paper studies how to efficiently apply device-to-device (D2D) communications underlaying a cellular system to support vehicle-to-vehicle (V2V) connection (termed D2D-V). By considering the geographic features of the D2D-V system, the authors propose a D2D-V grouping, reuse channel selection (RS), and power control (PC) framework to achieve the optimal performance of the D2D-V system, in terms of either maximized sum rate or maximized minimally achievable rate. First, in a full channel state information (CSI) scenario, the authors apply difference of two convex functions (D.C.) programming to obtain the optimal PC. However, because the CSI between some terminals is hard to obtain and some interference can be appropriately inhibited by taking advantage of the vehicles' geographic features, they make a series of simplifications to the PC problem to reduce the requirement of full CSI, the dependence of centralized control, and the computational complexity. The suitable conditions of each simplification are elaborated. Each step of the simplifications are shown as a certain tradeoff between performance and complexity. Furthermore, the authors provide an investigation into the service quality that one vehicle can achieve when it passes through the covered segment of the highway and propose the location–service curve to portray this. They use numerical simulations to verify the accuracy and feasibility of each step of their suboptimal PC and specific features embedded in the location–service curve.

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01587878
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 27 2016 5:12PM