Novel Expressions and Applications for the Level Crossing Rate of Maximal Ratio Combining in the Presence of Cochannel Interferers

Ali, Ahmed O. D.; Yetis, Cenk M.; Torlak, Murat

doi:10.1109/tvt.2017.2718563

Cited by 11 publications

(7 citation statements)

References 31 publications

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“…From Fig. 2(a), we can observe that for correlated Rayleigh faded interferers, SER computed by means of (17) and (18) matches the simulated values. We can also see that the approximation for σ 2 ≈ 0 computed using (24) gives good match with the simulated results for higher values of SNR.…”

Section: Numerical Resultssupporting

confidence: 68%

“…This is because we have to use the zonalpolynomial based eigenvalue distribution from [32] to simplify the Laplace transform, which is not mathematically tractable. Nevertheless, we arrive at a mathematically tractable solution, wherein we propose to approximate the non-central Wishart matrix by a central Wishart matrix through moment matching and then use the derived expression given in (17).…”

Section: Laplace Transform For Correlated Interferers and Unequal Pow...mentioning

confidence: 99%

“…Existing 4G and emerging 5G systems are both interference-limited. Hence, receiver techniques like OC and MRC will play a key role in the performance analysis of these systems [17]. However, SER and/or outage probability (OP) expressions when OC is employed and when both the user and interferers undergo Rician fading have not been studied.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Optimal Combining in Rician Fading With Co-Channel Interference

Srinivasan

Kalyani

2019

IEEE Trans. Veh. Technol.

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Approximate Symbol error rate (SER), outage probability and rate expressions are derived for receive diversity system employing optimum combining when both the desired and the interfering signals are subjected to Rician fading, for the cases of a) equal power uncorrelated interferers b) unequal power interferers c) interferer correlation. The derived expressions are applicable for an arbitrary number of receive antennas and interferers and for any quadrature amplitude modulation (QAM) constellation. Furthermore, we derive a simple closed form expression for SER in the interference-limited regime, for the special case of Rayleigh faded interferers. A close match is observed between the SER, outage probability and rate results obtained through the derived analytical expressions and the ones obtained from Monte-Carlo simulations.

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Section: Numerical Resultssupporting

confidence: 68%

Section: Laplace Transform For Correlated Interferers and Unequal Pow...mentioning

confidence: 99%

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Analysis of Optimal Combining in Rician Fading With Co-Channel Interference

Srinivasan

Kalyani

2019

IEEE Trans. Veh. Technol.

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“…Examining the statistical characteristics of fading time intervals is very critical for designing wireless communications systems. In fact, studying the LCR and the AOD is of major importance when it comes to evaluating adaptive communication systems in terms of the optimum packet length and the packet error rate (PER) [4]- [5]. Second-order statistics are also more meaningful when analyzing the performance of a communication system in a cellular environment with co-channel interference where the AOD is more important than the probability of outage itself [6].…”

Section: Introductionmentioning

confidence: 99%

“…Second-order statistics are also more meaningful when analyzing the performance of a communication system in a cellular environment with co-channel interference where the AOD is more important than the probability of outage itself [6]. In [4], the authors derived the expression of the LCR for a multi-antenna system employing maximum ratio This work was supported by the KAUST Office of Sponsored Research. combining (MRC) in the presence of additive white Gaussian noise and co-channel interferers with unequal received powers and Doppler shifts.…”

Section: Introductionmentioning

confidence: 99%

Level Crossing Rate and Average Outage Duration of Free Space Optical Links

Issaid

Alouini

2019

IEEE Trans. Commun.

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The level crossing rate (LCR) and the average outage duration (AOD) are two important second order statistics that allow a deeper understanding of the behavior of the channel. In this paper, we study these metrics in order to assess the performance of free space optical (FSO) communication links in the presence of weak atmospheric turbulence and Rice-induced pointing errors. More specifically, we derive an integral and a Gauss-Laguerre quadrature representation for both the LCR and the AOD in the single hop case and for their respective bounds in the multihop case. Selected numerical simulations are presented to show the accuracy of the derived results and to study the effect of certain system parameters on these two performance metrics.

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