Channel Capacity and Second-Order Statistics in Weibull Fading

Sagias, N.C.; Zogas, D.A.; Karagiannidis, George K.; Tombras, George S.

doi:10.1109/lcomm.2004.831319

Cited by 142 publications

(71 citation statements)

References 10 publications

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“…Useful incite-series expressions for LCR Table 1 Terms need to be summed in each sum of (14) to achieve accuracy at the 5th significant digit and AFD at the output of this system were derived. The effects of the various parameters such as shadowing and fading severity and the number of the diversity branches at the micro-combiners on the system's statistics were also presented.…”

Section: Resultsmentioning

confidence: 99%

“…In Table 1, the number of terms to be summed in (14), in order to achieve accuracy at the 5th significant digit, is presented for various values of system parameters.…”

Section: Second-order Statisticsmentioning

confidence: 99%

“…Macro-diversity over the shadowed fading channels was discussed by several researches [7][8][9]12]. Discussions about the second-order statistics of various diversity systems can be easily found in the literature [13][14][15]. Secondorder statistics analysis of macro-diversity system operating over Gamma shadowed Nakagami-m fading channels was recently proposed in [16].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Second-order statistics of selection macro-diversity system operating over Gamma shadowed κ-μ fading channels

Panić¹,

Stefanović

Petrović³

et al. 2011

J Wireless Com Network

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In this article, infinite-series expressions for the second-order statistical measures of a macro-diversity structure operating over the Gamma shadowed -μ fading channels are provided. We have focused on MRC (maximal ratio combining) combining at each base station (micro-diversity), and selection combining (SC), based on output signal power values, between base stations (macro-diversity). Some numerical results of the system's level crossing rate and average fading duration are presented, in order to examine the influence of various parameters such as shadowing and fading severity and number of the diversity branches at the micro-combiners on concerned quantities.

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Section: Resultsmentioning

confidence: 99%

“…In Table 1, the number of terms to be summed in (14), in order to achieve accuracy at the 5th significant digit, is presented for various values of system parameters.…”

Section: Second-order Statisticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Second-order statistics of selection macro-diversity system operating over Gamma shadowed κ-μ fading channels

Panić¹,

Stefanović

Petrović³

et al. 2011

J Wireless Com Network

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“…Finally, in Gong and Letaief [17] a systematic analysis for orthogonal stbcs in keyhole channels is presented and closed form expressions for error rate of space-time block codes are derived. However, to the best of the authors' knowledge, mimo systems performance has not yet been addressed under the assumption that the resulting envelope at both sides of the keyhole may be characterized as a non-linear function of the modulus of the sum of the multipath components, thus resulting to the so-called Weibull fading model [18][19][20][21][22][23].…”

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confidence: 99%

Performance Evaluation of Space–Time Block Codes Over Keyhole Weibull Fading Channels

Peppas

Maras

2008

Wireless Pers Commun

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It is well known that degenerate channel phenomena known as keyholes may significantly reduce the capacity of multiple-input and multiple-output (mimo) channels. Keyhole mimo channels were predicted theoretically and also observed experimentally. In this paper, a novel method of analyzing the performance of keyhole mimo channels is proposed. The proposed method is based on the assumption that the received signal at the keyhole encompasses an arbitrary number of multipath components and the propagation environment is such that the resulting signal is observed as a non-linear function of the modulus of the sum of these components. Based on this assumption, we initially introduce the double Weibull fading model, constructed by the product of two independent Weibull distributed fading envelopes. Closed-form expressions for its moments-generating function, probability density function, cumulative distribution function, and moments are also derived. Based on these formulas, we analytically evaluate the performance of a 2 × 2 mimo space-time block-coding (stbc) system, where performance metrics such as the average symbol error probability for several modulation schemes, outage probability, amount of fading and ergodic capacity are given in closed form. Various performance evaluation results are presented in order to verify the proposed analysis.

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“…The second order characteristics (average LCR and AFD) and average Shannon's channel capacity for channel with Weibull multipath fading are acquired in [19] as formulas in the closed form. In [20], the formulas for the average LCR and AFD at the output of SC combiner with two branches are obtained.…”

Section: Related Workmentioning

confidence: 99%

Level crossing rate of SC receiver over gamma shadowed Weibull multipath fading channel

et al. 2016

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Original scientific paper The wireless telecommunication system consisting of selection combining (SC) receiver which works in Gamma shadowed Weibull multiple-faded channel is discussed in this work. The received signal suffers Weibull small scale fading which leads in variation of the signal envelope and Gamma large scale fading which results in variation of the SC receiver output signal envelope power. SC receiver is utilized to abate the impact of Gamma large scale fading effects and Weibull small scale fading effects on system characteristics. The formula for average level crossing rate (LCR) of signal envelope at SC combiner output is performed in the closed shape. The result we get can be applied to calculate the average fade duration (AFD) of such wireless systems. The obtained solutions are plotted in a few graphs to point out the impact of Weibull fading envelope severity parameter and Gamma shadowing severity parameter on system features. Keywords: Gamma shadowing; level crossing rate (LCR); selection combining (SC); Weibull fading Srednji broj osnih presjeka kod SC prijemnika u kanalu s Weibull-ovim fedingom i Gamma sjenkomIzvorni znanstveni članak U ovom radu je razmotren bežični telekomunikacijski sustav sa SC prijemnikom koji radi u prisustvu Weibull-ovog fedinga i Gamma sjenke. Utjecaj Weibull-ovog fedinga na primljeni signal se ogleda u promjeni anvelope signala, a utjecaj Gamma sjenke u promjeni snage izlaznog signala. SC prijemnik se koristi za smanjenje utjecaja fedinga i sjenke na karakteristike sustava. Izraz za srednji broj osnih presjeka izlaznog signala iz SC prijemnika je izveden u zatvorenom obliku. Dobiveni rezultati se mogu koristiti za izračunavanje prosječnog trajanja otkaza bežičnog sustava. Numerički rezultati su predstavljeni grafički, kako bi se prikazao utjecaj parametara fedinga i sjenke na karakteristike sustava.

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Channel Capacity and Second-Order Statistics in Weibull Fading

Cited by 142 publications

References 10 publications

Second-order statistics of selection macro-diversity system operating over Gamma shadowed κ-μ fading channels

Second-order statistics of selection macro-diversity system operating over Gamma shadowed κ-μ fading channels

Performance Evaluation of Space–Time Block Codes Over Keyhole Weibull Fading Channels

Level crossing rate of SC receiver over gamma shadowed Weibull multipath fading channel

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