Interference Aware Algorithm For D2D Communications Underlay Cellular Network A Mixed Strategy Approach

2019 ◽  
Author(s):  
Sawsan Selmi ◽  
Ridha Bouallegue
Keyword(s):  
Cellular Network ◽  
Mixed Strategy ◽  
D2d Communications

scholarly journals A Novel Resource Allocation Scheme in NOMA-Based Cellular Network with D2D Communications

2020 ◽  
Vol 12 (1) ◽  
pp. 8 ◽  
Author(s):  
Jingpu Wang ◽  
Xin Song ◽  
Yatao Ma
Keyword(s):  
Resource Allocation ◽  
Power Allocation ◽  
Interference Cancellation ◽  
Cellular Network ◽  
System Throughput ◽  
Search Rate ◽  
D2d Communications ◽  
Selection Scheme ◽  
Allocation Algorithm ◽  
Complexity Cost

Non-orthogonal multiple access (NOMA) has become a promising technology for 5G. With the support of effective resource allocation algorithms, it can improve the spectrum resource utilization and system throughput. In this article, a new resource allocation algorithm in the NOMA-enhanced cellular network with device-to-device (D2D) communications is proposed, in which we use two new searching methods and an optimal link selection scheme to maximize the system throughput and limit the interferences of the NOMA-based cellular network. In the proposed joint user scheduling, tree-based search power allocation and link selection algorithm, we simplify the solving process of previous methods and set up the optimization function, which does not need to be derivable. With successive interference cancellation (SIC) technology, we give conditions for the D2D devices accessing into the network. We also propose a suboptimal scheme to schedule cellular users and D2D devices into multiple subchannels, which reduces the complexity of the exhaustive search method. Through consistent tree-based searching for the power allocation coefficients, we can get the maximum arithmetic average of the system sum rate. Meanwhile, for the existence of the part of interferences from larger power users which can be canceled by the SIC in NOMA systems, the search options are decreased for increasing the search rate of the power allocation algorithm. Moreover, we propose a distance-aware link selection scheme to guarantee the quality of communications. In summary, the proposed algorithm can improve the system throughput, has a low complexity cost and potentially increases spectral utilization. Numerical results demonstrate that the proposed algorithm achieves a higher data transmission rate than some of the traditional methods and we also investigate the convergence and the computational complexity cost of the joint algorithm.

scholarly journals Performance Analysis for Downlink MIMO-NOMA in Millimeter Wave Cellular Network with D2D Communications

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Jianguo Li ◽  
Xiangming Li ◽  
Aihua Wang ◽  
Neng Ye
Keyword(s):  
Outage Probability ◽  
Millimeter Wave ◽  
Cellular Network ◽  
High Reliability ◽  
Multiple Input Multiple Output ◽  
Ergodic Capacity ◽  
Base Station ◽  
Transmission Power ◽  
D2d Communications ◽  
Radio Access

Enabling nonorthogonal multiple access (NOMA) in device-to-device (D2D) communications under the millimeter wave (mmWave) multiple-input multiple-output (MIMO) cellular network is of critical importance for 5G wireless systems to support low latency, high reliability, and high throughput radio access. In this paper, the closed-form expressions for the outage probability and the ergodic capacity in downlink MIMO-NOMA mmWave cellular network with D2D communications are considered, which indicates that NOMA outperforms TDMA. The influencing factors of performance, such as transmission power and antenna number, are also analyzed. It is found that higher transmission power and more antennas in the base station can decrease the outage probability and enhance the ergodic capacity of NOMA.

scholarly journals Resource Allocation for D2D Communications Underlaying a NOMA-Based Cellular Network

2018 ◽  
Vol 7 (1) ◽  
pp. 130-133 ◽  
Author(s):  
Yijin Pan ◽  
Cunhua Pan ◽  
Zhaohui Yang ◽  
Ming Chen
Keyword(s):  
Resource Allocation ◽  
Cellular Network ◽  
D2d Communications

scholarly journals Operational Region of D2D Communications for Enhancing Cellular Network Performance

2015 ◽  
Vol 14 (11) ◽  
pp. 5984-5997 ◽  
Author(s):  
Stelios Stefanatos ◽  
Antonis G. Gotsis ◽  
Angeliki Alexiou
Keyword(s):  
Cellular Network ◽  
Network Performance ◽  
D2d Communications
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