A Novel Cooperative Network Using Down-link Non-orthogonal Multiple Access Scheme

Syed Agha Hassnain Mohsan,Moqbel Ali Mohammed Hamood,Alireza Mazinani,Syed Muhammad Tayyab Shah

doi:10.1109/piers53385.2021.9694889

Abstract

A novel downlink cooperative non-orthogonal multiple access (DC-NOMA) scheme is proposed in this paper to achieve higher performance in the spectral efficiency compared to the classical NOMA schemes. The communication system consists of one base station and two users (e.g., strong user and weak user). In down link phase, the base station transmits a superimposed signal to both users, and in the cooperative phase, the weak user sends its decoded message to the strong user. The main idea is how the weak user can help the strong user to improve the performance of both users. This occurs by enabling the weak user to perform a cooperative transmission with the strong user during the cooperative phase. The outage probability, outage throughput, and diversity order are derived and analyzed. Numerical results are provided to show that the spectral efficiency gain achieved through our proposed scheme is better than the conventional cooperative NOMA schemes.

Highlights

The increase in the demands of the expected new services and data traffic, such as cloud-based architectural applications and among such, is the main challenge for the 5G wireless network
We proposed downlink cooperative non-orthogonal multiple access (DC-Non-orthogonal multiple access (NOMA)) scheme to increase the spectral efficiency and throughput of cooperative NOMA scheme
We proposed a similar, yet different approach to the other cooperative NOMA scheme

Summary

A Novel Cooperative Network Using Down-link Non-orthogonal

Syed Agha Hassnain Mohsan, Moqbel Ali Mohammed Hamood, Syed Muhammad Tayyab Shah, and Alireza Mazinani. Abstract— A novel downlink cooperative non-orthogonal multiple access (DC-NOMA) scheme is proposed in this paper to achieve higher performance in the spectral efficiency compared to the classical NOMA schemes. The communication system consists of one base station and two users (e.g., strong user and weak user). The base station transmits a superimposed signal to both users, and in the cooperative phase, the weak user sends its decoded message to the strong user. The main idea is how the weak user can help the strong user to improve the performance of both users. Numerical results are provided to show that the spectral efficiency gain achieved through our proposed scheme is better than the conventional cooperative NOMA schemes

INTRODUCTION

First Phase

Second Phase

Performance Analysis

Outage Probability

System Throughput

NUMERICAL RESULTS

Conclusion

Future Research Work