On the Achievable Spectral Efficiency of Spatial Modulation Aided Downlink Non-Orthogonal Multiple Access

Wang, Xuesi; Wang, Jintao; He, Longzhuang; Tang, Zihan; Song, Jian

doi:10.1109/lcomm.2017.2707068

Cited by 41 publications

(29 citation statements)

References 14 publications

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“…There were several prior works on SM-NOMA systems. The spectral efficiency was studied for SM-NOMA systems in the multiple-input single-output (MISO) scenario, but fixed power allocation and random user grouping were considered [6], [8]. The BER performance was investigated for SM-NOMA systems in the MIMO scenario, where the power allocation was calculated by assuming the same received signal-to-noise ratio (SNR) of the two users after the successive interference cancellation (SIC) procedure [7].…”

Section: A Related Workmentioning

confidence: 99%

“…It ensures that the users can exploit power domain resources at the same time, frequency, code domain. NOMA-based SM (SM-NOMA) systems have been well considered [6]- [8] because they have higher spectral efficiency while maintaining moderate complexity and fairness. However, the performance enhancement of the system is limited by only one chosen TA.…”

Section: Introductionmentioning

confidence: 99%

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User Grouping and Power Allocation for Downlink NOMA-Based Quadrature Spatial Modulation

Hong

et al. 2020

IEEE Access

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Conventional non-orthogonal multiple access (NOMA)-based spatial modulation (SM) systems utilize only the real part of amplitude-phase modulation (APM) symbols for transmission, but quadrature spatial modulation (QSM) can extend this to two orthogonal components to improve the spectral efficiency. In this way, we propose a NOMA-based QSM system in multiple-input multiple-output scenarios, where APM symbols are divided into real and imaginary components for transmission and then these two components are sent by real and imaginary transmit antennas, respectively. To further improve the performance of our proposed system, we also propose a user grouping and a power allocation with relatively low complexity. Different from previous schemes, the user grouping scheme is designed for considering channel conditions, user locations, and channel correlations jointly. Moreover, the power allocation scheme is performed in each group to meet users' quality-of-service requirements, i.e., target-rate requirements. Simulation results demonstrate the effectiveness of proposed schemes by comparing with existing ones. INDEX TERMS Quadrature spatial modulation, non-orthogonal multiple access, multiple-input multipleoutput, user grouping, power allocation. GUOQUAN LI (Member, IEEE) received the M.S. and Ph.D. degrees in electronic circuit and system

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Section: A Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

User Grouping and Power Allocation for Downlink NOMA-Based Quadrature Spatial Modulation

Hong

et al. 2020

IEEE Access

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“…On the other hand, the combination of NOMA and SM has also attracted growing attention. In particular, Wang et al proposed an SM aided NOMA (SM-NOMA) system in [9], where the BS transmits the superimposed SM symbols of users. In [10], a two-user SM-NOMA scheme was introduced, where the signal of one user is conveyed in the spatial domain and the signal of the other user is conveyed in the signal domain, and thus it completely cancels the intra-cluster interference.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Spatial Modulation Aided NOMA With Full-Duplex Relay

Jin

Chen

et al. 2020

IEEE Trans. Veh. Technol.

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A spatial modulation aided non-orthogonal multiple access with full-duplex relay (SM-NOMA-FDR) scheme is proposed for the coordinated direct and relay transmission in this paper. Specifically, the signal of the near user is mapped to an M -ary modulated symbol and the signal of the far user is mapped to an SM symbol. The base station first transmits signals to the near user and relay via SM-NOMA, and then the relay decodes and retransmits the signal of the far user. An SM-assisted FDR is used in this scheme to improve the spectral efficiency while reducing energy consumption and making full use of the antenna resources at the relay, since SM only activates one antenna in each transmission. We derive the ergodic capacity and bit error rate of the proposed scheme over independent Rayleigh fading channels. Numerical results validate the accuracy of the theoretical analysis and show the superior performance of the proposed SM-NOMA-FDR scheme.

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“…It has also a good backward compatability with other technologies and can be easily used in conjunction with other technologies like OFDMA, massive MIMO or spatial modulation [7]. In particular, in [8] the authors proposed a novel SM-aided NOMA system and used the mutual information metric to characterize its achievable spectral efficiency.…”

Section: Introductionmentioning

confidence: 99%

Distributed Spatial Modulation Aided NOMA

Shehni

Flanagan

2019

2019 European Conference on Networks and Communications (EuCNC)

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In this paper, a novel cooperative diversity protocol based on the association of non-orthogonal multiple access (NOMA) and distributed spatial modulation (DSM) is introduced. In the proposed protocol, two source symbols are multiplexed in the power domain, while one source symbol obtains a diversity gain due to its being relayed according to the DSM principle; this doubles the data rate for the source-to-destination link as compared with conventional DSM. We propose two demodulators for use at the destination: an error-aware demodulator which is robust to demodulation errors at the relays, and a suboptimal demodulator which assumes error-free demodulation at the relays. Simulation results demonstrate that while the proposed protocol achieves a source data throughput equal to that of a full-duplex system, its BER performance also significantly outperforms the full-duplex relaying benchmarks of successive relaying and virtual full-duplex DSM.

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On the Achievable Spectral Efficiency of Spatial Modulation Aided Downlink Non-Orthogonal Multiple Access

Cited by 41 publications

References 14 publications

User Grouping and Power Allocation for Downlink NOMA-Based Quadrature Spatial Modulation

User Grouping and Power Allocation for Downlink NOMA-Based Quadrature Spatial Modulation

Performance Analysis of Spatial Modulation Aided NOMA With Full-Duplex Relay

Distributed Spatial Modulation Aided NOMA

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