نتایج جستجو برای: شبکه مش wimax
تعداد نتایج: 39296 فیلتر نتایج به سال:
Deployment Video on Demand (VoD) over the next generation (WiMAX) has become one of the intense interest subjects in the research these days, and is expected to be the main revenue generators in the near future and the efficiency of video streaming over next generation 4G is the key to enabling this. We are considering video streaming for real time video was coded by different H.264.x codes (H....
Mobile WiMax security standards from IEEE specify some powerful standards-based security controls, including PKMv2 EAP-based authentication and over-the-air AES-based encryption. But encryption technique does not guarantee a powerful secure end-to-end image transmission, and, consequently, WiMax presents a range of security design and integration challenges. In this paper, two proposed chaos en...
Worldwide Interoperability for Microwave Access (WiMAX) is a technology that bridges the gap between fixed and mobile access and offer the same subscriber experience for fixed and mobile user. Demand for such type of mobile broadband servicesaccess, which is further extended to support portability and mobility based on IEEE 802.16e, also known as Mobile WiMAX. However, frequent topology changes...
Comparative Analysis of Estimation Techniques for IQ Imbalance for OFDM Based WiMAX System: A Review
Wireless communication is becoming very popular now a days. Worldwide Interoperability for Microwave Access (WiMAX) system in wireless communication plays an important role and has been attracting the researchers in the last decade. WiMAX system has provided anefficient solution for ‘last mile’ access technology to provide high data rate internet access for residential as well as small business...
wimax که مبتنی بر استاندارد ieee 802.16 می¬باشد، یک تکنولوژی بی سیم بر اساس روش دسترسی چندگانه ofdma است. ofdma منابع موجود (زمان و فرکانس) را به چندین زیرحامل متعامد در دامنه فرکانس و چندین سمبل مجاور در دامنه زمان تقسیم می کند. مساله تخصیص پهنای باند در ieee 802.16 این است که چگونه بلوک های دوبعدی در محدوده زمان و فرکانس (که burst نامیده می شود) به کاربران تخصیص داده شود. تخصیص منابع برای کار...
استفاده از مش پلی پروپیلن (Poly propylen mesh) از سال ۱۹۶۱ آغاز شد. نتایج یک مطالعه در سال ۱۹۷۰، بیانگر کاربرد این مش (mesh) برای ترمیم فتق مغبنی مستقیم و عودکننده می باشد. اخیره نیز چند محقق، نتایج استفاده از مش مارلکس (Marlex) (پلی پروپیلن) در ترمیم فتق مغبنی و رانی را بسیار خوب، توصیف کرده اند. در این مطالعه نتایج مقدماتی استفاده از مش مارلکس برای ترمیم تمام فتق های ناحیه گروئین (groin) مطرح...
IEEE 802.16 Worldwide Interoperability for Microwave Access (WiMAX) is an emerging broadband wireless communication standard used as a model of transmission and high speed Internet access. 3G Long Term Evolution (LTE) is the leading standard for wireless communication of high-speed data for mobile users. In this report we compare the performance of voice and video applications over WiMAX and LT...
The WiMAX Forum certifies and promotes the compatibility and interoperability of broadband wireless products where many testcases need to be developed for WiMAX procedures. In this paper, we develop a conformance test tool called ITRI-WiMAXT based on the TTCN-3 specifications. Then we show howWiMAX procedures are tested in ITRI-WiMAXT. Based on ITRI-WiMAXT, we have proposed several test procedu...
This article analyzes the performance of vertical handover between UMTS and WiMAX networks by defining development architecture for supporting mobility between these two technologies. First, architectures and principles of operation of networks UMTS and WiMAX are detailed and compared. Then the main protocols of mobility are considered as support of handover between UMTS and WiMAX (802.16). Fin...
In this paper, a research is described analyzing the solutions to the security issues in WiMAX (802.16e). At first a global overview of the technology WiMAX is given followed by an explanation of authentication and authorization for WiMAX. Then the security issues mentioned in literature are presented along with possible solutions. Next, the solutions are analyzed using criteria which are also ...
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