العلاقة بين التعرض للمضامين السياسية بالصحف والقنوات الفضائية المتاحة عبر مواقع التواصل الاجتماعي والمزاج العام نحو قضايا الوطن العربي: [PDF]
المجلة المصرية لبحوث الرأى العام, 2015 تمکنت حالات المزاج أو الانطباع العام وتأثيراتها على العملية الاتصالية من جذب انتباه بعض الباحثين الإعلاميين الغربيين، وقامت نتيجة لذلک بحوث کثيره في هذا المجال لکشف تأثيرات الحالة المزاجية للفرد في عملية تلقي الرسالة الإعلامية والتفاعل مع محتواها ...
ممدوح عبدالله +1 more
doaj +1 more source
Iterative Predistortion of the Nonlinear Satellite Channel [PDF]
IEEE Transactions on Communications, 2014 Digital Video Broadcasting-Satellite-Second Generation (DVB-S2) is the current European standard for satellite broadcast and broadband communications. It relies on high-order modulations up to 32 amplitude/phase-shift keying (APSK) in order to increase the system spectral efficiency.
Thibault Deleu +3 more
openaire +1 more source
Современная наука и инновации, 2022 Predictive methods and models are used to identify the state of satellite communication channels. However, they evaluate their condition only at a qualitative level, which does not allow fine-tuning the characteristics and parameters of satellite ...
G. I. Linets, S. V. Melnikov
doaj +1 more source
Impact of Imperfect Channel State Information on RS Coding Aided Hybrid-ARQ in Rayleigh Fading Channels [PDF]
, 2010 Hybrid Automatic-Repeat-reQuest (ARQ) schemes are capable of maintaining reliable communications for transmission over hostile wireless channels. In coherent detection aided schemes, the achievable performance substantially depends on the accuracy of ...
H. A. Ngo +3 more
core +1 more source
Characterization of Bias in Fengyun-4B/AGRI Infrared Observations Using RTTOV
Remote Sensing, 2023 As China’s first operational second-generation geostationary satellite, Fengyun-4B carries the newly developed Advanced Geostationary Radiation Imager (AGRI), which adds a low-level water vapor detection channel and an adjusted spectrum range of four ...
Zhi Zhu, Chunxiang Shi, Junxia Gu
doaj +1 more source
An Enhanced Multiple Random Access Scheme for Satellite Communications [PDF]
, 2012 In this paper, we introduce Multi-Slots Coded ALOHA (MuSCA) as a multiple random access method for satellite communications. This scheme can be considered as a generalization of the Contention Resolution Diversity Slotted Aloha (CRDSA) mechanism. Instead
Bui, Huyen-Chi +6 more
core +1 more source
إدراك محرري الديسك المركزي في وسائل الإعلام المصريَّة التقليديَّة والرقميَّة للوظائف والمعايير الصحفية وانعكاسها على أدائهم المهني: دراسة ميدانية [PDF]
المجلة المصرية لبحوث الإعلامهدف الدراسة إلى: "التعرف على بيئة عمل محررو الديسك المركزي بوسائل الإعلام المصرية التقليدية والرقمية، واعتمدت الدراسة على منهج المسح الإعلامي لمسح عينة عمدية بلغت (86) محررًا بالديسك المركزي بوسائل الإعلام المصرية التقليدية: (وتضم صحف)، ورقمية: تضم ...
محمود اسماعيل عبد الرؤف الضبع
doaj +1 more source
On the Queuing Delay of Time-Varying Channels in Low Earth Orbit Satellite Constellations
IEEE Access, 2021 Low Earth Orbit (LEO) satellite constellations are envisioned as a complementary or integrated part of 5G and future 6G networks for broadband or massive access, given their capabilities of full Earth coverage in inaccessible or very isolated ...
Nestor J. Hernandez Marcano +3 more
doaj +1 more source
Error-bound formulation for multichannel reception of M-DPSK and pilot-aided M-PSK over Rayleigh-fading channels with postdetection combining [PDF]
, 2004 Upper bounds for symbol-error probability are developed for multichannel reception of M-ary phase-shift keying (M-PSK) over frequency-flat Rayleigh-fading channels.
Chow, YC, McGeehan, JP
core +1 more source
The application of modern media with an emphasis on satellite: media use and gratification approach [PDF]
Management Science Letters, 2012 Satellite channels play an important role on building a connection among people with the same nationality who live in different parts of the world. The primary question is on how to serve various people with appropriate programs.
Ali Akbar Farhangi +2 more
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