SCMA Spectral and Energy Efficiency With QoS

IEEE Access

W. Chen¹  S. Jaber¹  K. Wang² 

[1] Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, China;School of Communications and Electronic Engineering, East China Normal University, Shanghai, China;

关键词: Dual method;    energy efficiency;    SCMA;    spectral efficiency;    QoS;   

DOI  :  10.1109/ACCESS.2021.3062887

来源: DOAJ

【 摘 要 】

Sparse code multiple access (SCMA) is one of the promising candidates for new radio access interface. The new generation communication system is expected to support massive user access with high capacity. However, there are numerous problems and barriers to achieve optimal performance, e.g., the multiuser interference and high power consumption. In this paper, we present optimization methods to enhance the spectral and energy efficiency for SCMA with individual rate requirements. The proposed method has shown a better network mapping matrix based on power allocation and codebook assignment. Moreover, the proposed method is compared with orthogonal frequency division multiple access (OFDMA) and code division multiple access (CDMA) in terms of spectral efficiency (SE) and energy efficiency (EE) respectively. Simulation results show that SCMA performs better than OFDMA and CDMA both in SE and EE.

【 授权许可】

Unknown