naa a22 4500 510793193 CHVBK 20180411083327.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11277-012-0679-2 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0679-2 A New Approach of Channel Modeling in HAPS Based Networks and Their System Performance Analysis [Elektronische Daten] [Ali Khazaei, Paeiz Azmi] This paper concerns channel modeling for High Altitude Platform Systems (HAPS) and the performance evaluation of Hybrid_ARQ in the WiMAX network provided by HAPS. The stratospheric platform or HAPS is currently a new proposal for WiMAX technology. Firstly we study the HAPS channel behavior as a Finite State Markov Channel (FSMC). In this way, the range of magnitude of the fading channel gain is partitioned into a finite number of states; then based on level crossing rates, the state transition probabilities are derived. The validity of the proposed model is evaluated by theoretical and link level simulation results. Next, we use the derived state transition probabilities as channel model parameters in OPNET simulator for HAPS-WiMAX to calculate HARQ system level measures. The paper compares the performance obtained using two different models in fading effects, i.e. AWGN and our HAPS channel model. In addition, the influence of parameters is analyzed through comparison between our model and the Stanford University Interim (SUI) channel models, in terms of the Bit Error Rate (BER). Springer Science+Business Media, LLC., 2012 High Altitude Platform System (HAPS) nationallicence WiMAX nationallicence IEEE802.16 nationallicence SUI channel models nationallicence Finite State Markov Channel (FSMC) nationallicence HAPS : High Altitude Platform Systems nationallicence HARQ : Hybrid Automatic Repeat reQuest nationallicence TPM : Transition Probability Matrix nationallicence PDP : Power Delay Profile nationallicence TDL : Tapped Delay Line nationallicence K : Rician factor nationallicence Q m (.) : Generalized Marcum's Q function nationallicence N k : Level crossing rate nationallicence I 0 : Zeroth order modified bessel function of the first kind nationallicence SUI : Stanford University Interim nationallicence Khazaei Ali Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut Azmi Paeiz Electrical and Computer Engineering Department, Tarbiat Modares University, Tehran, Iran aut Wireless Personal Communications Springer US; http://www.springer-ny.com 70/1(2013-05-01), 69-84 0929-6212 70:1<69 2013 70 11277 https://doi.org/10.1007/s11277-012-0679-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0679-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Khazaei Ali Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran aut NATIONALLICENCE 700 1- Azmi Paeiz Electrical and Computer Engineering Department, Tarbiat Modares University, Tehran, Iran aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 70/1(2013-05-01), 69-84 0929-6212 70:1<69 2013 70 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer