Digital Communication over Fading Channels

Simon, M.K.; Alouini, Mohamed‐Slim

doi:10.1002/0471715220

Cited by 2,247 publications

(2,475 citation statements)

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“…where m N and S,dB denote the Nakagami-m fading parameter and the log-normal shadowing parameter with the dB-spread, respectively, and ¼ 10= lnð10Þ [12]. Note that the channel between the typical ST and the typical SR is assumed to be Rayleigh fading channel for using (9).…”

Section: Numerical Evaluationmentioning

confidence: 99%

Performance analysis of secondary networks with multiple primary users for spectrum database system

et al. 2017

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This paper presents the performance evaluation for secondary networks with multiple primary users (PU) with a stochastic geometry approach. On the assumption that the secondary users (SUs) follow a Poisson hole process, we derive a PU's outage probability (OP) and SU's area spectral efficiency (ASE), where the PU's OP and SU's ASE are defined as the probability that the aggregate interference at a PU from transmitting SUs exceeds a threshold and the product of the transmitting SU's density and the SU's average throughput, respectively. The theoretical results agree with the simulation results, and these results show that both the PU's OP and SU's ASE decrease along with the primary exclusive region (PER) size, i.e., we quantitatively evaluate the trade-off between the PU's OP and SU's ASE.

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Section: Numerical Evaluationmentioning

confidence: 99%

Performance analysis of secondary networks with multiple primary users for spectrum database system

et al. 2017

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“…The end-to-end amount of fading (AF) is defined as the ratio of variance to the square average SNR [13].…”

Section: B Amount Of Fadingmentioning

confidence: 99%

On the Performance of Multihop-Intervehicular Communications Systems Over <italic>n</italic>*Rayleigh Fading Channels

Alghorani

Kaddoum

Muhaidat

et al. 2016

IEEE Wireless Commun. Lett.

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Abstract-We investigate the performance of multihop-intervehicular communication systems with regenerative and nonregenerative relaying. We consider the so-called "n*Rayleigh distribution" as an adequate multipath fading channel model for vehicle-to-vehicle communication scenarios. We derive a novel approximation for the outage probability of maximum ratio combining (MRC) diversity reception. In addition, we analyze the amount of fading and optimize the power allocation for the investigated scenario. Numerical results show that regenerative systems are more efficient than nonregenerative systems when the cascading order ( ) is small; however, for large , our results demonstrate that the performance of both relaying techniques is rather similar.

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“…In determining , the equal gain combining (EGC) spatial diversity technique is considered. The EGC combiner sets ; , and requires the knowledge of the propagation delay, (phase shift) [24] on each diversity branch in order to obtain , which is the coherent sum of the branch signals. This need for the knowledge of the phase shift/propagation delay on each diversity branch by the EGC combiner adds to the EGC receiver complexity but at the benefit of improved performance.…”

Section: B With Spatial Diversitymentioning

confidence: 99%

BPSK Subcarrier Intensity Modulated Free-Space Optical Communications in Atmospheric Turbulence

Popoola

Ghassemlooy

2009

J. Lightwave Technol.

492

290

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Abstract-Free-space optical communications (FSO) propagated over a clear atmosphere suffers from irradiance fluctuation caused by small but random atmospheric temperature fluctuations. This results in decreased signal-to-noise ratio (SNR) and consequently impaired performance. In this paper, the error performance of the FSO using a subcarrier intensity modulation (SIM) based on a binary phase shift keying (BPSK) scheme in a clear but turbulent atmosphere is presented. To evaluate the system error performance in turbulence regimes from weak to strong, the probability density function (pdf) of the received irradiance after traversing the atmosphere is modelled using the gamma-gamma distribution while the negative exponential distribution is used to model turbulence in the saturation region and beyond. The effect of turbulence induced irradiance fluctuation is mitigated using spatial diversity at the receiver. With reference to the single photodetector case, up to 12 dB gain in the electrical SNR is predicted with two direct detection PIN photodetectors in strong atmospheric turbulence.

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Digital Communication over Fading Channels

Cited by 2,247 publications

References 0 publications

Performance analysis of secondary networks with multiple primary users for spectrum database system

Performance analysis of secondary networks with multiple primary users for spectrum database system

On the Performance of Multihop-Intervehicular Communications Systems Over <italic>n</italic>*Rayleigh Fading Channels

BPSK Subcarrier Intensity Modulated Free-Space Optical Communications in Atmospheric Turbulence

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