Publisher:Asian Research Publishing Network (ARPN)
Series Info:Journal of Theoretical and Applied Information Technology 52
Type:Article
Keywords:October University for Modern Sciences and Arts
,
University for Modern Sciences and Arts
,
MSA University
,
جامعة أكتوبر للعلوم الحديثة والآداب
,
October University for Modern Sciences and Arts
,
University for Modern Sciences and Arts
,
MSA University
,
جامعة أكتوبر للعلوم الحديثة والآداب
,
Doppler effect
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HAPs
,
IEEE802.16m
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Mobility
,
Wimax
Abstract:
Providing WiMax broadband services via high altitude platforms (HAPs) is still an open research issue. One of the major problems affecting the system performance on the link level is Doppler Effect caused by the mobility of the served users. This paper investigates the Doppler effects on the bit error rate of mobile users in the downlink of the WiMax802.16m standard. The system key parameters that affect the error bit rate performance are also studied. These parameters include the channel propagation model. The Bit Error Probability (BEP) is the performance metric used to evaluate the downlink performance. Numerical results provided through simulations show that providing WiMax through high altitude platforms enhances the BER performance over that expected from conventional terrestrial systems. � 2005-2013 JATIT& LLS. All rights reserved.
El-Sayed, Ashraf s; Ahmed A, Shindia; ShindiaAyman A, Diab; Amgad M, Rady(Pharmaceutical Society of Korea, 10/18/2014)
l-Arginase, hydrolyzing l-arginine to l-ornithine and urea, is a powerful anticancer, l-arginine-depleting agent, against argininosuccinate synthase expressing tumors. Otherwise, the higher antigenicity and lower thermal ...
Fractalkine (FKN) in its free and membrane bound-forms and its receptor CX3CR1are reported to have an atherosclerotic effect. The relationship of Single Nucleotide Polymorphisms (SNPs) in FKN and CX3CR1genes with the ...
Abdelaziz T.D.; Ezzeldin F.M.; El Batal H.A.; Abdelghany A.M.(European Journal of Economics, Finance and Administrative SciencesElsevier, 2014)
Combined optical and infrared absorption spectra of V2O 5-doped cadmium borate glasses were investigated before and after gamma irradiation with a dose of 8 Mrad (=8 � 104 Gy). The undoped base cadmium borate glass reveals ...