Yun Ai

On Multi-Hop Decode-and-Forward Cooperative Relaying for Industrial Wireless Sensor Networks

Wireless sensor networks (WSNs) will play a fundamental role in the realization of Internet of Things and Industry 4.0. Arising from the presence of spatially distributed sensor nodes in a sensor network, cooperative diversity can be achieved by using the sensor nodes between a given source-destination pair as intermediate relay stations. In this paper, we investigate the end-to-end average bit error rate (BER) and the channel capacity of a multi-hop relay network in the presence of impulsive noise modeled by the well-known Middleton’s class-A model. Specifically, we consider a multi-hop decode-and-forward (DF) relay network over Nakagami-m fading channel due to its generality, but also due to the absence of reported works in this area. Closed-form analytical expressions for the end-to-end average BER and the statistical properties of the end-to-end channel capacity are obtained. The impacts of the channel parameters on these performance quantities are evaluated and discussed.

Performance Analysis of Hybrid-ARQ over Full-Duplex Relaying Network Subject to Loop Interference under Nakagami-m Fading Channels

This paper investigates the performance of cooperative relay networks in the presence of hybrid automatic repeat request (ARQ) with delay constraint. It analyzes the scenarios where the relay channels are asymmetric (i.e., the links of the wireless relay network follow different fading distributions) due to relaying position and/or due to time varying channel fading. The analytical expressions for the outage probability and throughput are derived for different asymmetric fading channels. The benefit of combined implementation of relaying and hybrid-ARQ is illustrated. Our results show that the performance in terms of outage probability and delay-limited throughput is better when the relay node is in line-of-sight (LoS) with respect to the source node compared to being close to the destination node. This performance difference is quantified and can be as large as several dB depending on the specific configuration. This difference in performance narrows when the maximum hybrid-ARQ transmission rounds increase or when the information transmission rate decreases.

Capacity Analysis of PLC over Rayleigh Fading Channels with Colored Nakagami-m Additive Noise

Power line communication (PLC) is an emerging technology for the realization of smart grid and home automation. It utilizes existing power line infrastructure for data communication in addition to the transmission of power. The PLC channel behaves significantly different from the wireless channel; and it is characterized by signal attenuation as well as by additive noise and multiplicative noise effects. The additive noise consists of background noise and impulsive noise; while the multiplicative noise results in fading of the received signal power. This paper investigates the impact of the channel characteristics on the capacity performance of a PLC system over Rayleigh fading channel with frequency-distance dependent attenuation and colored Nakagami-m distributed additive noise. We derive the exact closed-form expressions for the distribution of the instantaneous signal-to-noise ratio (SNR). Since closed-form expression of the capacity for channels with non-Gaussian noise is extremely difficult to obtain, we choose to use the lower limit of the PLC capacity to facilitate our analysis. Monte Carlo simulation results are used to verify the derived analytical expressions.

On Physical Layer Security of α-η-κ-μ Fading Channels

In this letter, we study the secrecy performance of the classic Wyner’s wiretap model, where the main and eavesdropper channels are modeled by a general and versatile

Performance Analysis of PLC over Fading Channels with Colored Nakagami-m Background Noise

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Game-Theoretical Analysis of PLC System Performance in the Presence of Jamming Attacks

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Path-Loss Prediction for an Industrial Indoor Environment Based on Room Electromagnetics

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Geometry-based modeling of wideband industrial indoor radio propagation channels

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Power delay profile analysis and modeling of industrial indoor channels

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Radio frequency measurements and capacity analysis for industrial indoor environments

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