User assisted cooperative relaying in beamspace massive MIMO NOMA based systems for millimeter wave communications

Kaur, Jaipreet; Singh, Maninder

doi:10.23919/jcc.2019.06.009

Cited by 21 publications

(64 citation statements)

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“…To meet this demand, industry and academia must devise innovative technologies that can meet these requirements in smarter and innovative ways [ 2 ]. To achieve higher capacity, low latency, and low power consumption, it will be necessary to exploit the advantages of massive multiple-input multiple-output (mMIMO) and non-orthogonal multiple access (NOMA) technologies [ 3 ]. Millimeter wave (mmWave) technology is suitable for implementing mMIMO systems [ 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…To achieve higher capacity, low latency, and low power consumption, it will be necessary to exploit the advantages of massive multiple-input multiple-output (mMIMO) and non-orthogonal multiple access (NOMA) technologies [ 3 ]. Millimeter wave (mmWave) technology is suitable for implementing mMIMO systems [ 2 , 3 , 4 ]. It has a large number of unused frequencies and a small wavelength and has, thus, attracted considerable attention from both industry and academia [ 2 , 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Millimeter wave (mmWave) technology is suitable for implementing mMIMO systems [ 2 , 3 , 4 ]. It has a large number of unused frequencies and a small wavelength and has, thus, attracted considerable attention from both industry and academia [ 2 , 3 , 4 , 5 ]. It allows many antenna elements to fit in a small physical space and can improve the spectral efficiency [ 2 , 3 , 4 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…It has a large number of unused frequencies and a small wavelength and has, thus, attracted considerable attention from both industry and academia [ 2 , 3 , 4 , 5 ]. It allows many antenna elements to fit in a small physical space and can improve the spectral efficiency [ 2 , 3 , 4 , 6 ]. However, its high transceiver complexity and energy consumption make its practical application difficult to realize [ 2 , 3 , 4 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

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Threshold-Based User-Assisted Cooperative Relaying in Beamspace Massive MIMO NOMA Systems

Alimo

Hamamura

Sabuj

2022

Sensors

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The incorporation of user-assisted cooperative relaying into beamspace massive multiple-input multiple-output (mMIMO) non-orthogonal multiple access (NOMA) system can extend the coverage area and improve the spectral and energy efficiency for millimeter wave (mmWave) communications when a dynamic cluster of mobile user terminals (MUTs) is formed within a beam. We propose threshold-based user-assisted cooperative relaying into a beamspace mMIMO NOMA system in a downlink scenario. Specifically, the intermediate MUTs between the next-generation base station (gNB) and the cell-edge MUT become relaying MUTs after the successful decoding of the signal of the cell-edge MUT only when they meet the predetermined signal-to-interference plus noise ratio (SINR) threshold. A zero forcing (ZF) precoder and iterative power allocation are used to minimize both inter- and intra-beam interferences to maximize the system sum rate. We then evaluate the performance of this system in a delay-intolerant cell-edge MUT scenario. Moreover, the outage probability of the cell-edge MUT of the proposed scheme is investigated and an analytic expression is derived. Simulation results confirm that the proposed threshold-based user-assisted cooperative relaying beamspace mMIMO NOMA system outperforms the user-assisted cooperative relaying in beamspace mMIMO NOMA, beamspace MIMO-NOMA, and beamspace MIMO orthogonal multiple access (OMA) systems in terms of spectrum efficiency, energy efficiency, and outage probability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Threshold-Based User-Assisted Cooperative Relaying in Beamspace Massive MIMO NOMA Systems

Alimo

Hamamura

Sabuj

2022

Sensors

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“…In [13], a receive antenna selection scheme without feedback requirement for exploiting the advantages of MIMO is proposed. Cooperative diversity schemes for exploiting advantages of MIMO are proposed in [14][15][16][17][18][19][20] [21][22][23][24] for better performance. The drawbacks of these schemes are higher cost and complexity due to the feedback.…”

Section: Introductionmentioning

confidence: 99%

On the performance of code word diversity based quasi orthogonal space time block codes in multiple-input-multiple-output systems

Kumaraswamy¹,

Manickavel²,

Valimohamad

et al. 2020

IJECE

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In the recent past, a lot of researches have been put into designing a Multiple-Input-Multiple-Output (MIMO) system to provide multimedia services with higher quality and at higher data rate. On par with these requirements, a novel Quasi Orthogonal Space Time Block Code (QOSTBC) scheme based on code word diversity is proposed, which is a multi-dimensional approach, in this paper. The term code word diversity is coined, since the information symbols were spread across many code words in addition to traditional time and spatial spreading, without increasing transmission power and bandwidth. The receiver with perfect channel state information estimates the transmitted symbols with less probability of error, as more number of samples is available to estimate given number of symbols due to the extra diversity due to code words. The simulation results show a significant improvement in the Bit Error Rate (BER) performance of the proposed scheme when compared with the conventional schemes.

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Energy efficient power allocation for MIMO‐NOMA‐based integrated terrestrial‐satellite networks

Li,

Song

et al. 2023

Satell Commun Network

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SummaryMillimeter‐wave (mmWave) massive MIMO and non‐orthogonal multiple access (NOMA) are promising ways for improving energy efficiency of integrated terrestrial‐satellite networks. In this paper, we investigate the performance of integrated terrestrial‐satellite networks, in which MIMO‐NOMA‐based terrestrial networks and satellite network cooperatively provide ubiquitous services for ground users while reusing the entire bandwidth. Both base stations (BSs) and satellite are equipped with multiple antennas, and beamforming technology is utilized to serve multiple users simultaneously. First, a user selection scheme based on channel gain ratio is proposed to select satellite users. Then, we design a user clustering algorithm for reducing the intra‐beam and inter‐beam interference of BSs users. Analog and digital beamforming techniques are also adopted to further increase beam gain and improve system energy efficiency. The terrestrial networks and satellite networks energy efficiency are separately optimized through beamforming design and power allocation scheme, and then, a joint iterative algorithm is proposed to maximize the system energy efficiency. In addition, we introduce the interference temperature threshold to limit the satellite interference to BSs users. Finally, the performance of the proposed algorithm is simulated in comparison with the existing algorithm. The results indicate that the presented algorithm has high superiority in system energy efficiency and it can be applied to integrated terrestrial‐satellite networks.

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User assisted cooperative relaying in beamspace massive MIMO NOMA based systems for millimeter wave communications

Cited by 21 publications

References 0 publications

Threshold-Based User-Assisted Cooperative Relaying in Beamspace Massive MIMO NOMA Systems

Threshold-Based User-Assisted Cooperative Relaying in Beamspace Massive MIMO NOMA Systems

On the performance of code word diversity based quasi orthogonal space time block codes in multiple-input-multiple-output systems

Energy efficient power allocation for MIMO‐NOMA‐based integrated terrestrial‐satellite networks

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