Design of Hybrid Wireless and Power Line Sensor Networks With Dual-Interface Relay in IoT

Qian, Yuwen; Yan, Jiahui; Guan, Haibing; Li, Jun; Zhou, Xiangwei; Guo, Shengjie; Jayakody, Dushantha Nalin K.

doi:10.1109/jiot.2017.2725451

Cited by 47 publications

(24 citation statements)

References 26 publications

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“…x The source-to-relay, relay-to-near user and relay-to-far user channels are denoted by h SR , h RN and h RF , respectively. We assume all channels experience independent and identically distributed log-normal fading which is common in the PLC literature [25][26][27]. The PDF of the PLC log-normal fading channel is given by…”

Section: S R Nmentioning

confidence: 99%

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Cooperative Non-Orthogonal Multiple Access over Log-Normal Power Line Communication Channels

2019

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In this paper, we analyze the performance of cooperative power domain non-orthogonal multiple access (NOMA) in power line communication (PLC) networks. Due to the high signal attenuation of the source to user links, a relay aids communication from the source to two users. With half-duplex transmission, the source transmits a superimposed symbol in the first phase. The relay utilizes amplify-and-forward (AF) and decode-and-forward (DF) protocol on the received superimposed signal and forwards it to the users in the second phase. We derive analytic expressions for the outage probability and the system throughput of the proposed system under a PLC log-normal channel with impulsive noise. Based on the results for AF NOMA relaying case, we analyze the system performance at high signal-to-noise ratio (SNR) and derive closed-form lower and upper bounds for the outage probability. Simulation results show an improvement in the outage probability and the system throughput performance of the AF and DF NOMA schemes compared to the NOMA without relaying transmission and conventional orthogonal multiple access scheme. Furthermore, the impact of the channel variance is highlighted in the results. It is shown that the DF NOMA has a better outage probability than the AF NOMA scheme for low channel variance scenarios (i.e., less branches and connected loads in the PLC network). However, as the channel variance increases, AF NOMA scheme has similar outage probability performance as the DF NOMA scheme. In addition, it is shown that the system throughput is enhanced when the relay employs DF relaying compared to AF relaying.

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Section: S R Nmentioning

confidence: 99%

“…This is in contrast to the system model studied in References [21,24], where a direct link exists between the source and the near user. We study the system model under a log-normal fading assumption with impulsive noise characteristic to PLC networks [25][26][27][28][29]. Data communication is executed in two equal phases.…”

Section: Introductionmentioning

confidence: 99%

Cooperative Non-Orthogonal Multiple Access over Log-Normal Power Line Communication Channels

2019

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“…distribution, the Joint Opt. distribution, the (3,6) code, the (4,8) code and the code used in 802.11 and 802.16e wireless standards [38] are compared in terms of BER and waterfall area characteristic. The chosen LDPC codes of 802.11 and 802.16e are with the same frame length of 1944 and the same code rate of 0.5.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Wireless communication, PLC, and other communication methods have their own characteristics. The combined power line and wireless dual-media parallel communication technology can integrate resources, complement each other, save construction costs, and improve overall system performance [8]. Cooperative communication technology is one of the hotspots in academic research as an effective means of anti-fading and improving the reliability of communication systems.…”

Section: Introductionmentioning

confidence: 99%

Improved EXIT Algorithm Based on Gaussian Mixture Model and its Application to LDPC Construction in Coding Cooperative Systems With Hybrid Fading

Chen

et al. 2020

IEEE Access

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In this study, an EXIT algorithm based on Gaussian mixture coding and multi-dimensional node information calculation is proposed. The objective is to solve the problem of performance analysis of cooperative communication and LDPC code construction under hybrid fading and impulse noise. First, Gaussian mixture model estimation of the decoding initialization information is performed by the expectation maximized algorithm. In addition, key parameters, such as weight, mean, and variance of the Gaussian mixture model are obtained. Then, the multi-dimensional information processing is performed on the variable node and the check node information in the traditional EXIT algorithm based on the multi-dimensional Gaussian mixture model and system symmetry analysis. Finally, the objective function of LDPC code optimization is constructed, the constraints are given, and the optimal LDPC code degree distribution is obtained by the differential evolution algorithm. The simulation results show that compared with the traditional regular and other irregular LDPC codes, the newly constructed degree distribution has better performance in waterfall characteristics and error floor characteristics. Such distribution provides a necessary method to analyze and optimize the performance of cooperative coding system under hybrid media or hybrid fading. INDEX TERMS Expectation maximization (EM), Gaussian mixture, hybrid fading, low-density paritycheck (LDPC) codes, multi-dimensional EXIT.

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“…Taking household IoT as an example, in rooms far from the router, people often find that the signal strength of WLAN is relatively weak, thus a usage of PLC and wireless hybrid network may increase the coverage area and reliability of the access network. Power line and wireless cooperative communication technology [2][3][4][5] can integrate advantageous resources and save construction cost. Using diversity combining technologies, such as dual-media parallel communication, [2][3][4] maximal-ratio combining (MRC), 3 and dual-hop hybrid relay, 5 can improve the remote and reliable communication ability of the system.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of dual-media cooperative communication based on wireless and power line under hybrid fading

Chen

Jing

Han

et al. 2019

International Journal of Distributed Sensor Networks

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Wireless communication and power line communication are extensively applied in various fields, such as household Internet of things. For cooperative communication of amplify-forward relay using wireless access and power line transmission, the hybrid model of universal Nakagami wireless fading and lognormal power line fading was used in this study. A comparative analysis of similarities between Gamma and lognormal distributions and lognormal distribution characteristics of relay link signal-to-noise ratio was also carried out. Given the deficiencies of lognormal variable add approximation method, lognormal distribution parameters combined computing method based on moment generation function was proposed. Theoretical formulas of outage probability and bit error rate after amplify-forward relay and maximalratio combining was derived on the basis of moment generation function of the total output signal-to-noise ratio of the system. Effectiveness and reliability of the algorithm and theoretical formula were verified through simulation, and influence rules of hybrid channel fading and power distribution on the system performance were analyzed.

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Design of Hybrid Wireless and Power Line Sensor Networks With Dual-Interface Relay in IoT

Cited by 47 publications

References 26 publications

Cooperative Non-Orthogonal Multiple Access over Log-Normal Power Line Communication Channels

Cooperative Non-Orthogonal Multiple Access over Log-Normal Power Line Communication Channels

Improved EXIT Algorithm Based on Gaussian Mixture Model and its Application to LDPC Construction in Coding Cooperative Systems With Hybrid Fading

Performance analysis of dual-media cooperative communication based on wireless and power line under hybrid fading

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