Subcarrier and power optimization for device-to-device underlay communication using auction games

An auction-based joint subcarrier and power allocation approach is investigated to improve the performance of device-to-device (D2D) communication underlay cellular networks with uplink (UL) resource sharing. To maximize the system sum rate over the resource reuse of multiple D2D pairs, we introduce a reverse iterative combinatorial auction to formulate the optimization problem. In the auction, cellular channels are viewed as bidders competing to obtain rate increase while packages of D2D pairs and the corresponding transmit power are auctioned as goods in each round. We first give the evaluation of bidders´ optimal value for packages, and then explain a descending price auction in detail, also give properties of convergency and low-complexity. The simulation results are finally provided to indicate the efficiency of the proposed auction-based algorithm.