Resource Allocation Based on User Pairing and Subcarrier Matching for Downlink Non-Orthogonal Multiple Access Networks

2021 ◽  
Vol 8 (3) ◽  
pp. 679-689
Author(s):  
Zhixin Liu ◽  
Changjian Liang ◽  
Yazhou Yuan ◽  
Kit Yan Chan ◽  
Xinping Guan
Keyword(s):  
Resource Allocation ◽  
Multiple Access ◽  
Access Networks ◽  
User Pairing

scholarly journals Novel Resource Allocation Techniques for Downlink Non-Orthogonal Multiple Access Systems

2020 ◽  
Vol 10 (17) ◽  
pp. 5892 ◽  
Author(s):  
Zuhura J. Ali ◽  
Nor K. Noordin ◽  
Aduwati Sali ◽  
Fazirulhisyam Hashim ◽  
Mohammed Balfaqih
Keyword(s):  
Resource Allocation ◽  
Energy Efficiency ◽  
Power Allocation ◽  
Multiple Access ◽  
High Capacity ◽  
Kkt Conditions ◽  
Optimal Power Allocation ◽  
User Pairing ◽  
Optimal Power ◽  
Sum Rate

Non-orthogonal multiple access (NOMA) plays an important role in achieving high capacity for fifth-generation (5G) networks. Efficient resource allocation is vital for NOMA system performance to maximize the sum rate and energy efficiency. In this context, this paper proposes optimal solutions for user pairing and power allocation to maximize the system sum rate and energy efficiency performance. We identify the power allocation problem as a nonconvex constrained problem for energy efficiency maximization. The closed-form solutions are derived using Karush–Kuhn–Tucker (KKT) conditions for maximizing the system sum rate and the Dinkelbach (DKL) algorithm for maximizing system energy efficiency. Moreover, the Hungarian (HNG) algorithm is utilized for pairing two users with different channel condition circumstances. The results show that with 20 users, the sum rate of the proposed NOMA with optimal power allocation using KKT conditions and HNG (NOMA-PKKT-HNG) is 6.7% higher than that of NOMA with difference of convex programming (NOMA-DC). The energy efficiency with optimal power allocation using DKL and HNG (NOMA-PDKL-HNG) is 66% higher than when using NOMA-DC.

scholarly journals User Pairing for Downlink Non-Orthogonal Multiple Access Networks Using Matching Algorithm

2017 ◽  
Vol 65 (12) ◽  
pp. 5319-5332 ◽  
Author(s):  
Wei Liang ◽  
Zhiguo Ding ◽  
Yonghui Li ◽  
Lingyang Song
Keyword(s):  
Multiple Access ◽  
Access Networks ◽  
Matching Algorithm ◽  
User Pairing

A tutorial on cooperative non-orthogonal multiple access networks

2021 ◽  
pp. 154851292098662
Author(s):  
Bhanu Pratap Chaudhary ◽  
Ravi Shankar ◽  
Ritesh Kumar Mishra
Keyword(s):  
Resource Allocation ◽  
Multiple Access ◽  
Cooperative Relaying ◽  
Access Networks ◽  
Fifth Generation

In this paper, we explore the possibilities and advantages of cooperative relaying with the addition of non-orthogonal multiple access (NOMA). First, the possibilities of NOMA for fifth-generation (5G) and beyond networks is discussed followed by the generalized structures for the cooperative NOMA. Then, advanced NOMA communication is investigated where NOMA is integrated with advanced transmission technologies for the further improvement in cooperative NOMA. Hereinafter, resource allocation is investigated and, finally, the major challenges and issues are highlighted.

Resource Allocation for Non-Orthogonal Multiple Access-Enabled Fog Radio Access Networks

2020 ◽  
Vol 19 (6) ◽  
pp. 3867-3878
Author(s):  
Binghong Liu ◽  
Chenxi Liu ◽  
Mugen Peng ◽  
Yaqiong Liu ◽  
Shi Yan
Keyword(s):  
Resource Allocation ◽  
Multiple Access ◽  
Access Networks ◽  
Radio Access Networks ◽  
Radio Access
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