Performance Analysis of Multihop Relaying Caching for Internet of Things under Nakagami Channels

Ji, Baofeng; Xing, Bingbing; Song, Kang; Chunguo, Li; Wen, Hong; Yang, Liu

doi:10.1155/2018/2437361

Cited by 14 publications

(5 citation statements)

References 26 publications

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“…Various types of multi-hop communication systems have been investigated [14]- [19]. The wireless transmission for internet of things under Nakagami channels has been studied.…”

Section: B Motivation and Literature Surveymentioning

confidence: 99%

“…The wireless transmission for internet of things under Nakagami channels has been studied. The caching wireless transmission with direct link and multihop relaying from the transmitter to the receiver has been considered [14]. Another study that shows the impact of high power amplifiers and phase noise problems on the performance of multi-pair massive antenna relaying communication system is investigated in [15], where multi-pair massive relay equipped with very large antenna arrays.…”

Section: B Motivation and Literature Surveymentioning

confidence: 99%

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Design of Multihop Communication Systems Under Hardware Manufacturing Defects and Self Interference

et al. 2022

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Most studies on multi-hop communication systems are actually based on the assumption that hardware parts are built with high quality transmit/receive radio frequency chains, which are expensive and power-hungry. In practice, low cost hardware components are employed, which are prone to hardware manufacturing defects (e.g., phase noise, nonlinear power amplifier, inphase/quadrature imbalance, nonlinear low noise amplifier and analog to digital converter impairments). This paper focuses on the design of the transmitter, relay stations (RSs) and receiver for multi-hop communication systems under hardware defects. This paper analyzes the hardware defects and their impacts o n the performance of multi-hop communication system. In addition, the impact of self-interference at the RSs is considered. The effect of hardware defects is modeled using distortion noises. A closed-form expression for the signal to noise and distortion ratios (SNDRs) is mathematically derived, then the performance metrics (i.e., SNDR, outage probability (OP) and ergodic capacity) are calculated, accounting for hardware defects. In addition, exact form expression of the average bit error probability is derived. To facilitate comparison, performance metrics of the proposed multi-hop relaying system and ideal system are illustrated. We also propose a linear minimum mean square error (LMMSE) and self-interference cancellation technique to mitigate the hardware defects. The results reveal that hardware defects can degrade the system performance. In addition, SNDR ceiling is inversely proportional to the summation of the square of hardware defect lev el. Also, the proposed mitigation technique can enhance the syst em performance.INDEX TERM Multi-hop system, hardware defects, self-interference, outage, ergodic capacity, bit error probability. I. INTRODUCTION A. BackgroundTransmission-based multi-hop is a promising scheme to obtain wider coverage and to overcome wireless channels impairment. The main goal is that communication is verified via relaying the data from the transmitter to the receiver through many intermediate relays in between. Multi-hop communication systems have a number of features over classical communication systems in the fields of capacity, deployment, and connectivity, enhanced coverage, throughput, and power/battery life while decreasing the demand for specific infrastructureRelaying schemes enable network connectivity where classical architectures are difficult to implement because of constraints of the location, and can also be implemented to wireless local area networks, cellular networks , and hybrid networks. In multi-hop systems, the transmitter can communicate with the receiver via a number of relay stations (RSs). Therefore, multi-hop systems have the property of extending the coverage without applying higher transmission power.

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“…Various types of multi-hop communication systems have been investigated [14]- [19]. The wireless transmission for internet of things under Nakagami channels has been studied.…”

Section: B Motivation and Literature Surveymentioning

confidence: 99%

Section: B Motivation and Literature Surveymentioning

confidence: 99%

Design of Multihop Communication Systems Under Hardware Manufacturing Defects and Self Interference

et al. 2022

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“…Thus, [31] presented an Error-free system model that can provide balance energy and delay transmission data for a unidirectional AF relay. However, in many network applications, it is an impractical scenario to consider Error-free reception in two-hop networks with varying channel conditions [32].…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancements for Air-based Networks

Khalil¹

2022

Preprint

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<p>Power allocation is essential to maximise network throughput and minimise energy consumption and bit error rate performance. Thus, a new power allocation scheme for enhancing the performance of the air-based network, named Unmanned Aerial Vehicle (UAV) networks, is presented in this paper. The proposed power allocation allows the total power to be distributed optimally among the UAV network's nodes, including source relay and destination nodes. Then, energy consumption, transmission delay, and bit error rate in UAV networks are simultaneously enhanced. The typical UAV comprises three parts: remotely controllable flight platform (fixed wing or rotary wing), transmitter and receiver wireless nodes. In the proposed UAV networks, a wireless relay is fitted with a flight platform to extend network coverage and increase transmission throughput. The downside of mobile flight communication is the delay in data transmission caused by the UAV's movement. A consequence of this delay is increased total energy consumption, causing further degradation in bit error rate performance, especially at high <em>SNR</em> levels. Fortunately, delay and energy consumption can be traded off to improve communication performance in wireless communication. The proposed power allocation in this paper is achieved using the Scalarization optimisation method, which enables the best trade-off between energy consumption and data transmission delay and enhances the bit error rate. </p>

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“…Their approach can be implemented in a distributed manner without acquiring full channel state information (CSI) at the relay node. Meanwhile, some authors also investigate other key technologies about 5G except the full-duplex system [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of two-way full-duplex relay with antenna selection under Nakagami channels

Meng

et al. 2018

J Wireless Com Network

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This paper focuses on a full-duplex (FD) two-way relay network with one base station (BS), one FD amplify-andforward (AF) relay, and one user, and the BS is equipped with massive multiple-input multiple-output (MIMO) antennas. To reduce the complexity and cost of BS, the paper proposes a practical antenna selection way in BS to complete transmission in two-way FD relay networks to optimize the system performance of outage probability or bit error ratio (BER). In the proposed scheme, BS can implement transmit antenna selection (AS) based on the instantaneous channel state information (CSI), thereby improving the system performance compared to the traditional FD relay networks. Furthermore, closed-form expressions for the outage probability and average BER are derived under Nakagami-m channels. The analytical results show that the superiority of proposed scheme compared with the conventional AF relay scheme and the correctness of the theoretical analysis verified by the Monte Carlo simulations.

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Performance Analysis of Multihop Relaying Caching for Internet of Things under Nakagami Channels

Cited by 14 publications

References 26 publications

Design of Multihop Communication Systems Under Hardware Manufacturing Defects and Self Interference

Design of Multihop Communication Systems Under Hardware Manufacturing Defects and Self Interference

Performance Enhancements for Air-based Networks

Performance analysis of two-way full-duplex relay with antenna selection under Nakagami channels

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