Research on PDMA communication system based on complete complementary sequence

EURASIP Journal on Wireless Communications and Networking

Baoxin Su¹  Libiao Jin¹  Shufeng Li¹ 

[1] School of Information and Communication Engineering, State Key Laboratory of Media Convergence and Communication, Communication University of China, 100024,

[2] Beijing, People’s Republic of China;

关键词: Non-orthogonal multiple access;    Pattern division multiple access;    Complete complementary sequence;    Spread spectrum coding;    Power allocation;    Dynamic;   

DOI  :  10.1186/s13638-020-01812-3

来源: Springer

【 摘 要 】

Pattern division multiple access (PDMA) is a new non-orthogonal multiple access (NOMA) technology. It is proposed to meet the challenge of 5G large-scale connectivity and high-frequency spectral efficiency. Compared with traditional orthogonal multiple access (OMA), PDMA can support more users through the allocation of non-orthogonal resources. Due to perfect aperiodic correlation, complete complementary sequence (CCS) greatly improves the spectrum efficiency of the system. It has been widely used in wireless communication and radar sensing, and it still has research value in 5G. In order to apply the advantages of CCS to NOMA communication system, this paper proposes a system model of CCS spread spectrum coding based on PDMA. CCS is used as spread spectrum code to improve the performance of PDMA communication system. At the same time, on the basis of spread spectrum technology, this paper analyzes the average power allocation algorithm and water-filling power allocation algorithm, and a dynamic power allocation algorithm based on the transmission rate and practical application is proposed. The simulation results show that the system model can effectively improve the performance of the system.

【 授权许可】

CC BY