Virtual user pairing based non-orthogonal multiple access in downlink coordinated multipoint transmissions

被引:3
作者
Hendraningrat, Denny Kusuma [1 ]
Shahab, Muhammad Basit [2 ]
Shin, Soo Young [3 ]
机构
[1] Natl Standardizat Agcy Indonesia, Stand Dev, Jakarta 10340, Indonesia
[2] Univ Newcastle, Sch Elect Engn & Comp, Callaghan, NSW, Australia
[3] Kumoh Natl Inst Technol KIT, Dept IT Convergence Engn, Gumi 39177, South Korea
基金
新加坡国家研究基金会;
关键词
interference suppression; cellular radio; intercell interference; multi-access systems; JT-CoMP VP-NOMA; ESC; virtual user pairing; nonorthogonal multiple access; downlink coordinated multipoint transmissions; multicell coordination scheme; common cell edge users; user pairing scheme; cell centre user; inter-cell interference; achieved performance gains; three-cell scenario; ergodic sum capacity; CAPACITY MAXIMIZATION; POWER ALLOCATION; UNPAIRED USERS; NOMA; CHALLENGES; NETWORKS; SPECTRUM; UTILIZE; SCHEME;
D O I
10.1049/iet-com.2019.0955
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this study, joint transmission coordinated multi-point (JT-CoMP) is integrated with virtual user pairing based non-orthogonal multiple access (VP-NOMA), termed as JT-CoMP VP-NOMA. JT-CoMP is a multi-cell coordination scheme, where base stations of neighbouring cells coordinate with each other to improve the performance of their common cell edge users (CEUs). On the other hand, VP-NOMA is a one-to-many user pairing scheme in non-orthogonal multiple access (NOMA), where one cell centre user (CCU) within a cell can be paired/multiplexed with multiple CEUs for better spectrum utilisation. The proposed scheme combines both VP-NOMA for enhancing ergodic sum capacity (ESC) within a cell and JT-CoMP for mitigating inter-cell interference (ICI) between neighbouring cells. To demonstrate the achieved performance gains, ESC of a three-cell scenario is analysed as a key performance metric, where each cell contains two users; a CCU and a CEU. Closed-form expressions for ESC of the considered system are derived, and validated through simulations. Furthermore, the analytical and simulation results of JT-CoMP VP-NOMA are compared with orthogonal multiple access, NOMA, and VP-NOMA to show the achieved performance gains. It is shown that the proposed JT-CoMP VP-NOMA outperforms the other schemes in the viewpoint of ESC.
引用
收藏
页码:1910 / 1917
页数:8
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