نتایج جستجو برای: wireless network
تعداد نتایج: 731541 فیلتر نتایج به سال:
به دنبال توسعه شبکه های بی سیم محلی، نیاز به شبکه های بی سیم شهری روز به روز افزون تر گردید. تا آنجا که برای اولین بار استاندارد شبکه بی سیم شهری در سال 2001 تدوین گشت و با نام تجاری wimax و با استفاده از استاندارد ieee 802.16-2001 وارد بازار گردید. شبکه بی سیم شهری دارای دو قسمت اصلی بی سیم و با سیم است. قسمت بی سیم این شبکه از استاندارد ieee 802.16 تبعیت می کند. از آنجا که چالش اصلی در شبکه ب...
In this paper, the outage performance of wireless networks with unstructured topologies is investigated. The network reliability perspective graph theory used to obtain polynomial generalized for both uncorrelated and correlated channels. A relationship established between max-flow min-cut theo...
This paper presents a survey on various aspects of Wireless Body Area Network (WBAN) and its utility in healthcare system. Along with applications WBAN different areas research other prospective opportunities prominent challenges are also discussed. Development the field wireless communication, particularly Personal mobile networks, has lead to development As essentially consist body sensors se...
چکیده ندارد.
To increase reliability and fault tolerance in wireless sensor network, using spare nodes is a useful method. In this article, we survey the influence of using single-type and multi-type spare nodes on the fault tolerance in the low density. To achieve this, we use single-type and multi-type spare nodes and construct the network reliability graph for one, two and three-node densities. Then, we ...
We propose a novel hybrid optical wireless access network architecture that is designed for highly populated metropolitan area. This hybrid access network consists of an optical grid network providing broadband backhauling, and many wireless mesh networks penetrating into the neighborhoods to provide low cost, ubiquitous links. This hybrid access network architecture is scalable and flexible en...
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