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Evaluations of Channel Capacity Under Various Adaptation Policies and Diversity Techniques
Published in Stefan R. Panić, Mihajlo Stefanović, Jelena Anastasov, Petar Spalević, Fading and Interference Mitigation in Wireless Communications, 2013
Stefan R. Panić, Mihajlo Stefanović, Jelena Anastasov, Petar Spalević
Cases when wireless channels are affected by general and nonlinear fading distributions are discussed in this chapter. The analytical study of the κ-μ fading channel capacity, for example, under the OPRA, ORA, CIFR, and TIFR adaptation policies and the MRC and SC diversity techniques, is performed. The main contributions are the expressions derived for the proposed adaptation policies and diversity techniques. Based on them, numerically obtained results are graphically presented to show the effects of various system parameters. Since the κ-μ model as a general physical fading model includes Rayleigh, Rician, and Nakagami- m fading models, as special cases, the generality and applicability of this analysis are more than obvious. The nonlinear fading scenario is discussed in a similar manner, as an analytical study of the Weibull fading channel capacity, under the OPRA, ORA, CIFR, and TIFR adaptation policies and the MRC diversity technique.
Statistical analysis of cascaded Rician fading channels
Published in International Journal of Electronics Letters, 2020
Ibrahim Ghareeb, Deemah Tashman
The concept of cascaded fading channel is employed in many popular wireless communication systems, such as keyhole channel and multihop communication system, where in the transmission of radio signals, the signal may be propagated through a multiple of clusters from the transmitter to destination. In this case, the resulting end-to-end compound channel is modelled as a product of component channels, each corresponding to a certain cluster (Andersen, 2002), (Kanjirathumkal, Mohammed, & Jacob, 2013) and (Bithas, Kanatas, Da Costa, Upadhyay, & Dias, 2018). In some of the previous works, cascaded fading channels have been studied in the literature over independent fading channels, where the statistics, probability density function (PDF) and cumulative distribution function (CDF) of the end-to-end channel for cascaded Rayleigh, Nakagami-m, Weibull, Generalised-K and α-μ distributions are derived. Specifically, in Salo, El-Sallabi, and Vainikainen (2006) and Ata (2018), the PDF and CDF of a product of n independent Rayleigh distributed random variables (RVs) have been studied. In Karagiannidis, Sagias, and Takis (2007), the statistics of n independent, but not necessarily identically distributed Nakagami cascaded fading channels have been studied. In Sagias and Tombras (2007), the cascaded Weibull fading channel and its capacity were studied. The statistics and the performance in terms of channel capacity and error probability of communication systems operating over cascaded generalised-K fading channel were studied in Peppas, Lazarakis, Alexandridis, and Dangakis (2010). In Leonardo and Yacoub (2015) and Kong, Kaddoum, and Da Costa (2018), the statistics, PDF and CDF of the end-to-end channel for cascaded of an arbitrary number of independent non-identically distributed α-μ RVs have been studied. Moreover, these models offer good fit to experimental data for mobile-to-mobile communications.
Performance Analysis of a Selection Combining System That Uses the Minimal Interference Algorithm
Published in IETE Journal of Research, 2022
Aleksandra D. Golubovic, Nikola M. Sekulovic, Mihajlo C. Stefanovic, Dejan N. Milic, Zorica B. Nikolic
Weibull fading channel model is a flexible model that confirms experimentally attained fading channel measurements for both indoor [6] and outdoor [7,8] environments. The model can describe wireless channels with different fading severity conditions characterized by the Weibull fading parameter. Dual-branch and multi-branch SC receivers operating over correlated Weibull fading channels in the presence of CCI and using the SIR algorithm are studied in [9] and [10], respectively.