A Stackelberg Game Approach for NOMA in mmWave Systems

In this paper, the joint design of user clustering and power allocation is investigated in a downlink non-orthogonal multiple access based millimeter wave (mmWave-NOMA) system. In order to maximize the sum rate of the system, the Stackelberg game based optimization problem is formulated. With the aid of game theory, a low complexity algorithm is proposed to dynamically allocate users into different clusters. By deriving the closed-form expressions, the optimal power allocation coefficients of the users in each cluster are obtained. The properties of the proposed joint algorithm, including complexity, convergence and stability, are analyzed. Simulation results demonstrate that: i) the proposed algorithm can significantly improve the sum rate and reduce the outage probability of the mmWave- NOMA system; ii) the application of NOMA in mmWave systems is capable of achieving promising gains over conventional orthogonal multiple access (OMA) based frameworks in both cases.

[1]  Shouyi Yang,et al.  Energy-Efficient Power Allocation in Millimeter Wave Massive MIMO With Non-Orthogonal Multiple Access , 2017, IEEE Wireless Communications Letters.

[2]  Theodore S. Rappaport,et al.  Millimeter Wave Mobile Communications for 5G Cellular: It Will Work! , 2013, IEEE Access.

[3]  Zhiguo Ding,et al.  Optimal User Scheduling and Power Allocation for Millimeter Wave NOMA Systems , 2017, IEEE Transactions on Wireless Communications.

[4]  Günes Karabulut-Kurt,et al.  Nonorthogonal Multiple Access for 5G and Beyond , 2018, Wirel. Commun. Mob. Comput..

[5]  George K. Karagiannidis,et al.  A Survey on Non-Orthogonal Multiple Access for 5G Networks: Research Challenges and Future Trends , 2017, IEEE Journal on Selected Areas in Communications.

[6]  Gee-Kung Chang,et al.  Non-Orthogonal Multiple Access With Successive Interference Cancellation in Millimeter-Wave Radio-Over-Fiber Systems , 2016, Journal of Lightwave Technology.

[7]  Debraj Ray.  A Game-Theoretic Perspective on Coalition Formation , 2007 .

[8]  Kyungwhoon Cheun,et al.  Millimeter-wave beamforming as an enabling technology for 5G cellular communications: theoretical feasibility and prototype results , 2014, IEEE Communications Magazine.

[9]  Robert W. Heath,et al.  MIMO Precoding and Combining Solutions for Millimeter-Wave Systems , 2014, IEEE Communications Magazine.

[10]  H. Vincent Poor,et al.  Random Beamforming in Millimeter-Wave NOMA Networks , 2016, IEEE Access.

[11]  Muhammad Imran,et al.  Non-Orthogonal Multiple Access (NOMA) for cellular future radio access , 2017 .

[12]  Zhiguo Ding,et al.  An Optimization Perspective of the Superiority of NOMA Compared to Conventional OMA , 2016, IEEE Transactions on Signal Processing.

[13]  H. Vincent Poor,et al.  Application of Non-Orthogonal Multiple Access in LTE and 5G Networks , 2015, IEEE Communications Magazine.