Abstract
In spectrum sharing cognitive radio networks, unauthorized users (secondary users) are allowed to use the spectrum of authorized users (primary users) to improve spectrum utilization. Due to limited spectrum resources, how to formulate a reasonable spectrum allocation scheme is very important. As a mathematical analysis tool, game theory can solve the problem of resource allocation well. In recent years, it has been applied to the research of resource allocation in spectrum sharing networks by some literatures. In a cellular network consisting of multiple cellular users and full-duplex end-to-end communication users D2D (device-to-device), the self-interference caused by full-duplex communication and the interference caused by the D2D users to the cellular users will significantly reduce system throughput. In order to reduce the interference in the network, this paper introduces a power control algorithm based on Stackelberg game, which sets the cellular users and D2D users as the leaders and followers, respectively. The cellular users and the D2D users compete with each other to minimize the cost, and we propose new utility functions. We build an optimization problem under the outage probability constraint and power constraint and the transmission power of the users is obtained by using the Lagrangian dual decomposition method. The simulation results show that the proposed game algorithm improves network performance compared with other existing schemes.
Highlights
With the rapid development of 5G technology, more and more mobile devices are required to access, making spectrum resources even poorer. e traditional spectrum sharing scheme is a static spectrum allocation mode
In order to improve the utilization rate of radio spectrum and make good use of radio spectrum resources reasonably, a dynamic sharing scheme must be proposed to allocate radio spectrum resources more efficiently. erefore, cognitive radio (CR) technology is proposed in this environment
Erefore, this paper proposes a power control algorithm for multiple cellular users and D2D users in full-duplex D2D communication with channel interruption constraints based on Stackelberg game
Summary
With the rapid development of 5G technology, more and more mobile devices are required to access, making spectrum resources even poorer. e traditional spectrum sharing scheme is a static spectrum allocation mode. Cognitive radio technology promotes the development of wireless communication industry, improves the utilization efficiency of spectrum resources, and provides a brand-new idea for realizing the sharing of spectrum resources. Is communication mode shares spectrum resources with cellular users in cellular networks to improve the capacity and spectrum utilization of network systems. It has become one of the most popular research technologies recently. Simultaneous fullduplex D2D communication technology can support two communication devices to transmit and receive at the same frequency band in the wireless cellular network, and further improve the spectrum utilization [1]. How to reduce power interference among users is a key problem, such as D2D user interference, D2D user interference to cellular users, and D2D user self-interference
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