Performance evaluation of PLC with log-normal channel gain over Nakagami-m additive background noise
01 Aug 2015-pp 824-829
TL;DR: This paper uses a novel gamma approximation to log- normal distribution to evaluate the performance of a PLC system over log-normal fading channel under Nakagami-m distributed additive background noise assuming binary phase shift keying modulation scheme.
Abstract: Power line communication (PLC) utilizes power lines for the purpose of electronic data transmission. The performance of a PLC system is significantly affected by the additive and multiplicative power line noises; the additive noises are of two types, namely background noise and impulsive noise. Whereas, the multiplicative PLC noise leads to fading in the received signal strength. In this paper, we evaluate the performance of a PLC system over log-normal fading channel under Nakagami-m distributed additive background noise assuming binary phase shift keying modulation scheme. The analysis involving log-normal fading is very complicated. Hence we use a novel gamma approximation to log-normal distribution for our analysis. We evaluate the probability density function of the decision variable. A closed-form expression of the analytical average bit error rate of the considered system is derived. We also compute the diversity order of the considered PLC system. The validity of the derived analytical expressions is closely verified by the simulation results.
Citations
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TL;DR: In this article, the bit error rate (BER) performance of a free space optical (FSO) communication system was evaluated in the presence of amplified spontaneous emission (ASE) noise under weak, moderate to strong, and very strong atmospheric turbulence regimes and PEs.
Abstract: The performance of a free space optical (FSO) communication system is significantly affected by various atmospheric turbulence conditions and pointing errors (PEs) apart from the additive noise, which is assumed to be Gaussian Optical pre-amplifiers are an essential component of FSO systems for improving the receiver sensitivity However, optical pre-amplification results in amplified spontaneous emission (ASE), which dominates the receiver thermal and shot noises The square law photodetection process at the receiver in a FSO system necessitates the consideration of chi-square statistics for the decision variable contrary to the Gaussian approximation that is widely used in the literature In this paper, we evaluate the bit error rate (BER) performance of a FSO system assuming non-return-to-zero on–off keying modulation in the presence of ASE noise under weak, moderate to strong, and very strong atmospheric turbulence regimes and PEs We also derive asymptotic BER expressions for the considered FSO system for large values of the signal-to-noise ratio in terms of simple elementary functions Further insight into the system is provided by performing a diversity analysis
43 citations
Additional excerpts
...[24] has been widely used in the literature [27] and is known to give accurate results....
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TL;DR: In this paper, a unified methodology which takes into account the advantages and disadvantages of different Power Line Communication (PLC) technologies suitable for Smart Metering deployment is presented. But this methodology is not suitable for large-scale deployment.
Abstract: The paper describes a unified methodology which takes into account the advantages and disadvantages of different Power Line Communication (PLC) technologies suitable for Smart Metering deployment. The methodology should provide a detailed evaluation of PLC technologies based on a clear definition of the different parameters and their measurement. Based on this methodology, we should be able to provide a comparison of the selected technologies and the methodology should also provide data for the design of a telecommunication infrastructure for Smart Metering/Smart Grids. In this paper and based on this methodology, we also present the performance tests carried out in laboratory environment on low voltage and in on-field conditions on medium voltage.DOI: http://dx.doi.org/10.5755/j01.eie.24.3.20983
20 citations
01 May 2017
TL;DR: A general framework for the coexistence of broadband satellite system and terrestrial cellular networks with distinct geometry, configuration, and channel characteristics is defined, and closed-form expression for the outage probability of the cognitive cellular user is derived.
Abstract: This paper investigates the outage performance of cognitive broadband satellite systems and terrestrial cellular network in millimeter wave (nunWave) scenario. Considering the state-of-art standard recommendations and nun Wave propagation model, we first define a general framework for the coexistence of broadband satellite system and terrestrial cellular networks with distinct geometry, configuration, and channel characteristics. Then, by employing a interference temperature constraint at the fixed satellite service (FSS) receiver to limit the interference below an acceptable level, closed-form expression for the outage probability (OP) of the cognitive cellular user is derived, which is general and applicable to various channel parameters and geometric scenarios. Eventually, simulation results are carried out to verify the theoretical derivations, and shows the impact of key system parameters on the performance of the terrestrial cellular user with the coexistence of FSS.
17 citations
TL;DR: It is analytically prove that MIMO doubles the Diversity order with different combining schemes while the diversity order of a system under Nakagami-like noise is only half the diversity orders that would have been obtained under Gaussian noise.
Abstract: This work targets a comprehensive understanding of the impact of the serial-relaying and multiple-input-multiple-output (MIMO) fading mitigation techniques on the performance of indoor power line communication (PLC) systems. While these techniques were studied extensively under additive Gaussian noise, we aim at highlighting the implications of Nakagami-like noise on the achievable performance levels. The author derive approximate closed-form expressions for the bit error rate (BER) under Rayleigh fading and Nakagami-m background noise where the obtained approximations are very close to the exact BERs. The derived expressions are useful for evaluating the achievable diversity orders and for relating the BER to the main parameters of the PLC system in a direct and intuitive way. In this context, we analytically prove that MIMO doubles the diversity order with different combining schemes while the diversity order of a system under Nakagami-like noise is only half the diversity order that would have been obtained under Gaussian noise. The author also shows that multi-hop relaying does not enhance the diversity order.
17 citations
TL;DR: This letter provides the performance evaluation of a PLC system assuming DBPSK modulation under the combined effect of Nakagami-m background noise and impulsive noise and utilizes a simple, yet accurate approximation available in literature to derive the probability density function of the sum of two NakagAMI-m random variables.
Abstract: Power line communication (PLC) utilizes power lines for the purpose of electronic data transmission. Differential binary phase shift keying (DBPSK) is a popular modulation scheme proposed in the PLC standards like G3, PRIME, and IEEE P1901.2. This letter provides the performance evaluation of a PLC system assuming DBPSK modulation under the combined effect of Nakagami- $m$ background noise and impulsive noise. We utilize a simple, yet accurate approximation available in literature to derive the probability density function of the sum of two Nakagami- $m$ random variables. Closed-form expressions of the analytical average bit error rate and the outage probability of the system are derived. Validity of the derived analytical expressions is closely verified by simulated results.
12 citations
Cites background from "Performance evaluation of PLC with ..."
...The background noise in PLC is known to follow the Nakagami-m distribution [2]–[5], [17], [18]....
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References
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TL;DR: Simulation results show that the proposed statistical modelling method, which integrates the impact of network topology presents the PLC channel features as the underlying transmission line theory model.
Abstract: This paper proposes a new channel modelling method for powerline communications networks based on the multipath profile in the time domain. The new channel model is developed to be applied in a range of Powerline Communications (PLC) research topics such as impulse noise modelling, deployment and coverage studies, and communications theory analysis. To develop the methodology, channels are categorised according to their propagation distance and power delay profile. The statistical multipath parameters such as path arrival time, magnitude and interval for each category are analyzed to build the model. Each generated channel based on the proposed statistical model represents a different realisation of a PLC network. Simulation results in similar the time and frequency domains show that the proposed statistical modelling method, which integrates the impact of network topology presents the PLC channel features as the underlying transmission line theory model. Furthermore, two potential application scenarios are described to show the channel model is applicable to capacity analysis and correlated impulse noise modelling for PLC networks.
32 citations
TL;DR: In this paper, the authors compared the analytical and simulated BER (bit error rate) performances of QPSK (quadrature phase shift keying) transmission system with Gray encoding.
Abstract: Power line communication (PLC) technology is used in various areas of a smart grid. The extensive use of PLC technology has proved its key role in smart grids throughout the world. Despite PLC's advantages, it suffers from a difficulty in modeling and analysis of its power line channel. Many researchers have experimented and proposed channel models for their own defined environments; as a result, a unified model for the power line has not been presented. To overcome this problem partially, we used a Nakagami-m distribution like background noise and analyzed the performance of the binary transmission system in our previous work. In this paper, we compare the analytical and simulated BER (bit error rate) performances of QPSK (quadrature phase shift keying) transmission system with Gray encoding. We verify that the analyzed and simulated performances are well matched for different values of m.
29 citations
22 May 2011
TL;DR: The analytical and simulated BER (bit error rate) performances of QPSK (quadrature phase shift keying) transmission system with Gray encoding are compared and it is verified that the analyzed and simulated performances are well matched for different values of m.
27 citations
"Performance evaluation of PLC with ..." refers background in this paper
...Although, the detector in (6) is not an optimal detector in the presence of Nakagami-m additive background noise, but this threshold based detector is sufficient for our analysis of the effects of log-normal fading in PLC systems that was not included in [4] and [20]....
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...We also assume that, θ, the phase of the background noise given by (3) is uniformly distributed over the interval [−π, π] [3], [20], [21]....
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...The background noise in the PLC system is known to follow the Nakagami-m distribution [3], [20]–[22]....
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TL;DR: In this paper, a closed-form expression for the real part of background noise is derived for the power-line channel modeled by Nakagami probability density function, which facilitates the design of optimum receiver and its performance evaluation.
Abstract: A closed-form expression for the real part of background noise is derived for the power-line channel modeled by Nakagami probability density function. Simulation with various parameters shows the derived expression's validity. The closed-form expression can be of benefit to communication system designers in that it facilitates the design of optimum receiver and its performance evaluation.
24 citations
"Performance evaluation of PLC with ..." refers background in this paper
...We also assume that, θ, the phase of the background noise given by (3) is uniformly distributed over the interval [−π, π] [3], [20], [21]....
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TL;DR: This paper presents detailed guidelines for building emulation hardware, so that channel adapted PLC system design for MT networks can now be successfully started without further expensive field trials.
Abstract: The rapid progress of power line communications (PLC) for data transmission over electric power supply systems is now opening ways for special applications such as train automation in local transportation and mass transit (MT) systems. These DC-powered traction networks can be used as communication links between wayside equipment and the moving trains. As MT networks significantly differ from usual electricity supply systems, the usage of existing models and communication equipment for conventional PLC channels turns out infeasible. Therefore, the work reported in this paper focuses on MT channel investigation and modeling, in order to develop novel adapted solutions. The outcome is a stochastic MT channel model, which-besides multipath and time-variance-also includes peculiar properties such as the behavior of ring structures and the impact of the Doppler effect invoked by moving trains. In addition, a very special interference scenario is treated, caused by the rectifiers in these DC-powered environments. Besides a complete simulation model, this paper presents detailed guidelines for building emulation hardware, so that channel adapted PLC system design for MT networks can now be successfully started without further expensive field trials.
21 citations