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Message Passing-Based mmWave MIMO-NOMA With User Grouping and Power Allocation.
- Source :
- IEEE Transactions on Vehicular Technology; Nov2022, Vol. 71 Issue 11, p12356-12361, 6p
- Publication Year :
- 2022
-
Abstract
- In this paper, we investigate a downlink non-orthogonal multiple access (NOMA) transmission scheme for hybrid millimeter-wave (mmWave) system and study its user grouping and power allocation. In order to maximize the weighted sum-rate (WSR) of the system, we first propose a user grouping algorithm based on min-sum message passing (MSMP) strategy under the limited number of radio frequency (RF) chains. Then, with the zero-forcing (ZF) digital precoding, we propose a power allocation scheme for multiple-RF-chain NOMA (MRFC-NOMA) structure based on a non-convex transformation method, and design a low-complexity algorithm. The simulation results show that the proposed joint user grouping and power allocation method with lower complexity can achieve better WSR performance than the traditional schemes. [ABSTRACT FROM AUTHOR]
- Subjects :
- MESSAGE passing (Computer science)
RADIO frequency
MILLIMETER waves
Subjects
Details
- Language :
- English
- ISSN :
- 00189545
- Volume :
- 71
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Vehicular Technology
- Publication Type :
- Academic Journal
- Accession number :
- 160652311
- Full Text :
- https://doi.org/10.1109/TVT.2022.3192990