Power-domain non orthogonal multiple access (PD-NOMA) in cooperative networks: an overview

Liaqat, Mahrukh; Noordin, Kamarul Ariffin; Latef, Tarık Abdul; Dimyati, Kaharudin

doi:10.1007/s11276-018-1807-z

Cited by 125 publications

(82 citation statements)

References 123 publications

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“…Such practice reduces the processing delay at end-user and saves end-users decoder circuit power co k . 4 : When the power of the relay lies in the range L 4 , then mode 4 is selected. Here, the relay acts as a decode and forward relay.…”

Section: Adaptive Nomamentioning

confidence: 99%

“…As users are not required to make scheduling request from the transmitter, this makes it a low latency technique. 4 NOMA is also compatible with existing cellular communication schemes. Such advantages make NOMA a provoking field of interest for the researchers.…”

Section: Introductionmentioning

confidence: 99%

“…This scheme also provides reduced signaling cost as multiple users in a group are served simultaneously. As users are not required to make scheduling request from the transmitter, this makes it a low latency technique . NOMA is also compatible with existing cellular communication schemes.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive NOMA towards 5G green wireless network

Jain

Gupta

2020

Trans Emerging Tel Tech

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A nonorthogonal multiple access (NOMA) enabled downlink single‐cell communication network with cooperating relay nodes, is considered in this article. NOMA simultaneously transmits signals to a group of users. The formation of the group users, in NOMA, depends on their spatial restrictions. These spatial restrictions are defined by the transmission range of the relay equipment. Therefore, it is important to find the transmission range of the relay. This article presents a novel angle selection scheme for finding the transmission range of the relay. Ever‐increasing cellular traffic needs improvement in data rates and power saving. So, an adaptive NOMA scheme in which the system adaptively chooses its working model is proposed in this article. The adaptive NOMA scheme maximizes the sum rate and optimizes the energy efficiency of the fifth‐generation communication network. It also reduces the power consumption at the circuit of the end‐user equipment, hence, achieving power saving. Comprehensive numerical results emphasize that the proposed scheme achieves higher system energy efficient as compared to the conventional NOMA scheme. Such an adaptive framework also improves the average signal‐to‐interference noise ratio and the fairness factor, as shall be examined. The implications of proposing an adaptive NOMA network are evaluated through simulation results.

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Section: Adaptive Nomamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adaptive NOMA towards 5G green wireless network

Jain

Gupta

2020

Trans Emerging Tel Tech

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“…Thus NOMA has attracted the attention of researchers all over the world. Especially in the cellular network of the Internet of Things (IoT), NOMA provides the need for large-scale connection of IoT devices with low delay by accommodating multiple users in the same frequency spectrum [Liaqat, Noordin, Abdul Latef et al (2018); Liu, Song and Gui (2018); Borkar and Pande (2016)]. For example, in Ding et al [Ding, Dai and Poor (2016)], the authors consider a novel precoding and power allocation strategy to realize the potential of NOMA in IoT.…”

Section: Introductionmentioning

confidence: 99%

Outage Capacity Analysis for Cognitive Non-Orthogonal Multiple Access Downlink Transmissions Systems in the Presence of Channel Estimation Error

Zhang¹,

Dong²,

Wang³

et al. 2019

Computers, Materials &Amp; Continua

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In this paper, we propose a downlink cognitive non-orthogonal multiple access (NOMA) network, where the secondary users (SUs) operate in underlay mode. In the network, secondary transmitter employs NOMA signaling for downlink transmission, and the primary user (PU) is interfered by the transmission from SU. The expressions for the outage probabilities are derived in closed-form for both primary and secondary users in the presence of channel estimation error. Numerical simulation results show that the channel estimation error and the inter-network interference cause degradation of the downlink outage performance. Also the power allocation and the location have a significant impact on the outage probability. The numerical experiments demonstrate that the analytic expressions of the outage probabilities match with the simulation results.

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“…This growth is very much a consequence of rapid technological developments and ever-so increasing user demands. As a matter of fact, specifically from communication perspective, a lot of technological developments have been made recently and are in progress to cater the ever so increasing user demands, service requirements and quality of experience, such as, with the use of high-frequency mm-wave bands [1][2][3], Device to Device Communication (D2D) [4], Cooperative and Heterogeneous Network (HetNet) [5,6], Coordinated Multipoint (CoMP) [7], Internet of things (IoT) [8], Carrier Aggregation (CA) [9], Cognitive Radio (CR) [10], Passive Optical Network (PON) [11], Massive Multiple Input Multiple Output (MIMO) [12], Non-Orthogonal Multiple Access (NOMA) [13], Mobile Ad-hoc Network (MANET) [14], Vehicular ad-hoc networks (VANET) [15], Fog Computing [16]. Further, 5G will also be capable of incorporating existing technologies such as several advance power optimizations techniques [17,18] and optimal scheduling algorithms [19] required to cope with user demands meanwhile providing technology beyond fingertips.…”

Section: Introductionmentioning

confidence: 99%

Traffic Offloading in 5G Heterogeneous Networks using Rank based Network Selection

Gachhadar¹,

Qamar²,

Dong³

et al. 2019

JESTR

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The exponential growth of mobile data traffic and a limited number of spectrum resources has been a big challenge for cellular network providers, henceforth traffic offloading has become one of the most critical issues especially in 5G Heterogeneous Networks (HetNets). Further, network selection plays a vital role for traffic offloading in a cellular network to maintain Quality of Service (QoS), increasing offloading efficiency and throughput. In order to efficiently utilize spectral resources, a Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) algorithm is proposed to be used for ranking a candidate network. The proposed algorithm helps in alleviating the spectrum shortage by offloading the data traffic over Wi-Fi network using unlicensed spectrum. In this work, analysis of the performance of the proposed system model through simulation of an analytical framework has been made. The results have been accumulated in terms of cumulative handover, throughput, the extent of equilibrium & offloading efficiency with respect to residence time and the number of Wi-Fi Access Points (AP's). Analysis proves that the proposed algorithm improves the equilibrium extent and throughput as compared to traditional Load balancing (LB) and SDN based LB mechanisms. It also shows that offloading efficiency is highly improved over Wi-Fi density and residence time.

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Power-domain non orthogonal multiple access (PD-NOMA) in cooperative networks: an overview

Cited by 125 publications

References 123 publications

Adaptive NOMA towards 5G green wireless network

Adaptive NOMA towards 5G green wireless network

Outage Capacity Analysis for Cognitive Non-Orthogonal Multiple Access Downlink Transmissions Systems in the Presence of Channel Estimation Error

Traffic Offloading in 5G Heterogeneous Networks using Rank based Network Selection

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