Vinh, T.V. and Hiep, P.T. and Phuong, N.T. (2022) Combined Variable Active Antenna Spatial Modulation and NOMA to Enhance Spectral Efficiency for Multiple Users MIMO Systems. In: Conference of 15th International Conference on Advanced Technologies for Communications, ATC 2022, 20 October 2022 Through 22 October 2022, Hanoi.
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In multi-user multiple input multiple output (MIMO) systems, the non-orthogonal multiple access (NOMA) method based spatial modulation (SM) and generalized spatial modulation (GSM) can mitigate inter-user interference. However, the spectral efficiency of these methods is restricted because of antenna configuration. In this paper, a combination of the variable active antenna spatial modulation (VASM) scheme with the downlink power domain NOMA system, so-called NOMA-VASM, is proposed to improve spectral efficiency while main-taining mitigation of inter-user interference. In the novel NOMA-VASM, the antenna configuration is arbitrary and the number of enabled transmitting antennas (TAs) can be altered, so it is easier to increase spectral efficiency compared to NOMA-SM and NOMA-GSM. Monte Carlo simulations were performed under various scenarios, and the results showed that NOMA-VASM outperformed conventional NOMA-SM and NOMA-GSM in terms of spectral efficiency, average bit-error-rate (ABER) performance, and required number of TAs. © 2022 IEEE.
Item Type: | Conference or Workshop Item (Paper) |
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Divisions: | Faculties > Faculty of Radio-Electronic Engineering |
Identification Number: | 10.1109/ATC55345.2022.9943045 |
Uncontrolled Keywords: | Antennas; Bit error rate; Intelligent systems; MIMO systems; Modulation; Monte Carlo methods; Multiple access interference, Active antennas; Average bit-error rates; Average bit-error-rate; Multiple access; Multiple-Input Multiple- Output systems; Non-orthogonal; Non-orthogonal multiple access; Spatial modulations; Spectral efficiencies; Variable active antenna spatial modulation, Spectrum efficiency |
Additional Information: | Conference of 15th International Conference on Advanced Technologies for Communications, ATC 2022 ; Conference Date: 20 October 2022 Through 22 October 2022; Conference Code:184412 |
URI: | http://eprints.lqdtu.edu.vn/id/eprint/10616 |