Performance of Multi-Cell mmWave NOMA Networks With Base Station Cooperation

Zhang, Yangying; Mu, Junsheng; Jing, Xiaojun

doi:10.1109/lcomm.2020.3029572

Cited by 20 publications

(12 citation statements)

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“…It is because mmWave communication systems use frequency from 30 GHz to 300 GHz. Thus, they can support ultra-high transmission rate and massive connectivity [3], [4]. Consequently, the propagation characteristics as well as the applied scenarios of the mmWave communications have been intensively determined [5], [6].…”

Section: Introductionmentioning

confidence: 99%

“…[3]- [6], [11]- [13]. Specifically, the energy efficiency, outage probability (OP), and sum rate were derived in mmWave-NOMA system with multiple base stations [4]. Compared with traditional NOMA systems, mmWave-NOMA communications lead to a significant increase in computational complexity.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with traditional NOMA systems, mmWave-NOMA communications lead to a significant increase in computational complexity. It is because the OP expression of mmWave-NOMA communications is very complex [4]. Moreover, the performance of mmWave-NOMA and mmWave-OMA systems were compared [13].…”

Section: Introductionmentioning

confidence: 99%

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Performance Assessment of Millimeter-Wave NOMA System With Intelligent Reflecting Surface

Vinh

Tri

2022

IEEE Access

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This paper analyzes the performance of millimeter-wave (mmWave) non-orthogonal multiple access (NOMA) system with the aid of an intelligent reflecting surface (IRS). We derive the outage probability (OP) expressions at two users D 1 and D 2 of the IRS aided mmWave-NOMA system (the IRS-mmWave-NOMA system in the following). We validate the derived expressions via computer simulations. By considering the Nakagami-m fading channels and the path loss model proposed for 5G standard in the IRS-mmWave-NOMA system, our results are more suitable in practical scenarios. Specifically, numerical results observe that even the carrier frequency is extremely high (f c = 90 GHz) and the transmitter-receiver distances are further than 50 m, the OPs at D 1 and D 2 can achieve 10 −4 when the transmit power of base station (BS) is 30 dBm (dB in the following). Moreover, the OPs at D 1 and D 2 with IRS are greatly lower than OPs without IRS. This result demonstrates the huge benefits of utilizing IRS in mmWave-NOMA system. In addition, we can use an IRS with larger number of reflecting elements to maintain the OP performance at D 1 and D 2 when the distances are increased and f c is higher. On the other hand, we should choose a suitable value of power allocation coefficients to obtain the same performance at D 1 and D 2 .INDEX TERMS Non-orthogonal multiple access, millimeter-wave, intelligent reflecting surface, moment function, outage probability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance Assessment of Millimeter-Wave NOMA System With Intelligent Reflecting Surface

Vinh

Tri

2022

IEEE Access

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“…The system performance analysis of the mmWave-NOMA transmission scheme is introduced in [22,23]. To improve the system performance, the authors suggested a cooperative mmWave-NOMA multicast scheme in [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

A New Cooperative and Distributed Antenna Structure in Massive MIMO-NOMA Based on mmWave Transmission Scheme

Salehi

Parhizgar

Pesaran

2021

Wireless Communications and Mobile Computing

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In this paper, we propose a new massive multiple-input multiple-output (MIMO) nonorthogonal multiple access (NOMA) system with a cooperative and distributed antenna structure based on a millimeter-wave (mmWave) transmission system. We proposed this method to obtain high energy efficiency (EE) and spectrum efficiency (SE) by using the mmWave transmission scheme. In the proposed system, the user selects a few nearby base stations (BS) to create a virtual cell to own the serving BS antenna set. We concentrate on the mmWave massive MIMO-NOMA scheme. In this scheme, a large number of BS antennas and users by uniform distributions (UD) are considered in a specific area. Also, we combine our proposed method by interleaving division multiple access (IDMA) and utilize the IMDA benefits for high-rate applications. The proposed transmission scheme significantly improves the performance output in terms of SE, EE, sum rate, and log sum rate, according to our simulation results.

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“…In data transmission systems, the dead zone problem has been addressed in various ways, including relays and cooperative communications for both radio frequency (RF) systems using mmWave and THz [6]- [13] and optical communication systems [14]- [24]. Recently, reconfigurable intelligent surfaces (RISs) have emerged as one of the most effective solutions for solving skip-zone situations, in which an obstacle exists between a transmitter and receiver, preventing the LoS path of the transmitted signal from reaching the receiver [25]- [33].…”

mentioning

confidence: 99%

RIS-Assisted Visible Light Communication Systems: A Tutorial

Aboagye¹,

Ndjiongue²,

Ngatched³

et al. 2022

Preprint

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Recent intensive and extensive development of the fifth-generation (5G) of cellular networks has led to their deployment throughout much of the world. As part of this implementation, one of the challenges that must be addressed is the skip-zone problem, which occurs when objects such as trees, people, animals, and vehicles obstruct the transmission of signals.In free-space optical (FSO) and radio frequency (RF) systems, dead zones are most often caused by buildings and trees, while in visible light communications (VLC), obstructions are caused by individuals moving around a room or objects placed in the room. A signal obstruction can significantly reduce the signal-to-noise ratio in RF and indoor VLC systems, whereas in FSO systems, where the transmitted signals are directional, the obstruction can completely disrupt data transmission. Therefore, the skipzone dilemma must be resolved to ensure the smooth and efficient operation of 5G and beyond networks. By placing a relay between a transmitter and a receiver, the effects of obstacles can be mitigated. As a result, the signal from the transmitter will reach the receiver. In recent years, reconfigurable intelligent surfaces (RISs) that are more efficient than relays have become widely accepted as a method of mitigating skip-zones and providing reconfigurable radio environments. However, there have been limited studies on RISs for optical wireless communication (OWC) systems. Through the RIS technology, OWC and RF communication channels can be reconfigured. This paper aims to provide a comprehensive tutorial on indoor VLC systems utilizing RIS technology. The article discusses the basics of VLC and RISs and reintroduces RISs for OWC systems, focusing on RIS-assisted indoor VLC systems. We also provide a comprehensive overview of optical RISs and examine the differences between optical RISs, RF-RISs, and optical relays. Furthermore, we discuss in detail how RISs can be used to overcome line-of-sight blockages and the device orientation issue in VLC systems while revealing key challenges such as RIS element orientation design, RIS elements to access point/user assignment design, and RIS array positioning design problems that need to be studied. Moreover, we discuss and propose several research problems on integrating optical RISs with other emerging technologies, including non-orthogonal multiple access, multiple-input multiple-output systems, physical layer security, and simultaneous lightwave and power transfer in VLC systems. Finally, we highlight other important research directions that can further improve the performance of RISassisted VLC systems.

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Performance of Multi-Cell mmWave NOMA Networks With Base Station Cooperation

Cited by 20 publications

References 12 publications

Performance Assessment of Millimeter-Wave NOMA System With Intelligent Reflecting Surface

Performance Assessment of Millimeter-Wave NOMA System With Intelligent Reflecting Surface

A New Cooperative and Distributed Antenna Structure in Massive MIMO-NOMA Based on mmWave Transmission Scheme

RIS-Assisted Visible Light Communication Systems: A Tutorial

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