Accurate spectral efficiency analysis for non orthogonal multiple access

Sedtheetorn, Pongsatorn; Chulajata, Tatcha

doi:10.23919/icact.2017.7890235

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…These multiplexed users are said to be in a user pair. Previous work from literature shown that high capacity gains can be attained if users with large channel gain difference are paired with each other [2,11,12].…”

Section: User Clusteringmentioning

confidence: 99%

“…Therefore, if the orthogonal multiple access (OMA) is adopted, the spectral efficiency of the system deteriorates with the increasing number of cell edge users. To overcome this issue, non-orthogonal multiple access (NOMA) can be employed [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, NOMA has gained great interest from both academia and industry due to its potential to improve the spectral efficiency of transmission significantly [2], [4][5][6]. The key idea of NOMA is to perform simultaneous transmission to multiple users over the same resources ( i.e., time, channel, space) at the expense of inter-user interference [7].…”

Section: Introductionmentioning

confidence: 99%

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User clustering and resource allocation in downlink CoMP with NOMA

Katiran¹,

Shah²,

Abdullah³

et al. 2019

Bulletin EEI

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In coordinated multipoint (CoMP) system, the cell-edge performance is improved by minimizing inter-cell interference (ICI) through coordination of resources. Additionally, the non-orthogonal multiple access (NOMA) has been introduced as a promising candidate to further enhance the throughput of next generation wireless communication systems. NOMA allows multiple users to access the wireless channel in the same bandwidth simultaneously, however at different transmit power. In joint transmission NOMA in CoMP (JT-NOMA-CoMP), multiple cells jointly transmit data to users using the same time-frequency resources, which significantly improves the system performance. In this paper, we present a low-complexity user clustering and resource allocation strategy in downlink JP-NOMA-CoMP system with multiple antenna. Based on computer simulation, we show that the proposed approach outperforms the conventional JP-OMA-CoMP and single antenna JP-NOMA-CoMP in terms of achievable sum rate.

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Section: User Clusteringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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User clustering and resource allocation in downlink CoMP with NOMA

Katiran¹,

Shah²,

Abdullah³

et al. 2019

Bulletin EEI

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“…They include several non-orthogonal multiple access (NOMA) forms: multi-user shared multiple access (MUSA) [145][146][147][148], resource spread multiple access (RSMA) [149], sparse code multiple access (SCMA) [150][151][152], pattern division multiple access (PDMA) [153][154][155], interleave-division multiple access (IDMA) [156,157], and NOMA by power domain [158]. The NOMA is a radio access technology design for enabling greater spectrum efficiency [56,[159][160][161][162]207], higher cell-edge throughput, relaxed channel feedback, and low transmission latency [99]. NOMA can be employed to enhance user fairness and to support massive connections with diverse QoS requirements [163].…”

Section: Multiple Access and Waveformsmentioning

confidence: 99%

IoT’s Tiny Steps towards 5G: Telco’s Perspective

Cero¹,

Husić

Baraković

2017

Symmetry

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Abstract:The numerous and diverse applications of the Internet of Things (IoT) have the potential to change all areas of daily life of individuals, businesses, and society as a whole. The vision of a pervasive IoT spans a wide range of application domains and addresses the enabling technologies needed to meet the performance requirements of various IoT applications. In order to accomplish this vision, this paper aims to provide an analysis of literature in order to propose a new classification of IoT applications, specify and prioritize performance requirements of such IoT application classes, and give an insight into state-of-the-art technologies used to meet these requirements, all from telco's perspective. A deep and comprehensive understanding of the scope and classification of IoT applications is an essential precondition for determining their performance requirements with the overall goal of defining the enabling technologies towards fifth generation (5G) networks, while avoiding over-specification and high costs. Given the fact that this paper presents an overview of current research for the given topic, it also targets the research community and other stakeholders interested in this contemporary and attractive field for the purpose of recognizing research gaps and recommending new research directions.

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“…Rayleigh fading channels. In [9], the authors propose closed‐form expressions of NOMA downlink and uplink spectral efficiency for i.i.d. Nakagami and Rayleigh fading with line‐of‐sight and non‐line‐of‐sight.…”

Section: Introductionmentioning

confidence: 99%