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- Title
Joint MU-mMIMO-OFDM with Hybrid Beamforming System Spectral Efficiency Improvement based NOMA Technique.
- Authors
Mohammed, Raya K.; Khamiss, Nasser N.
- Abstract
Due to the increasing number of users and high data rate requirements for multimedia applications in fifth-generation (5G) and beyond wireless systems, it's necessary to incorporate spectral efficient techniques to overcome the limited available resources. The proposal of this paper is to employ a technique that improves the performance of a multi-user-massive multiple input multiple output orthogonal frequency division multiplexing (MUmMIMO-OFDM) system with hybrid beamforming (HBF). The spectral efficiency (SE) is enhanced by incorporating the non-orthogonal multiple access (NOMA) technique within each group of users. Multiple streams of users in a group are served with typical beams that could serve a single stream in existing MU-mMIMOOFDM systems. Two different scenarios are considered for performance analysis. The SE reaches about 60 bits/s/HZ at 5dB signal-to-noise ratio (SNR) when the base station (BS) is equipped with 64 antennas. The simulation results proved that the proposed MU-mMIMO-NOMA-OFDM system outperforms the existing models, where the user's SE is enhanced by 117% when 128 antennas are deployed at the BS.
- Subjects
ORTHOGONAL frequency division multiplexing; MULTIPLE access protocols (Computer network protocols); MIMO systems; ANTENNAS (Electronics); SIGNAL-to-noise ratio
- Publication
Journal of Communications Software & Systems, 2024, Vol 20, Issue 2, p165
- ISSN
1845-6421
- Publication type
Article
- DOI
10.24138/jcomss-2023-0181