نتایج جستجو برای: internet and broadcast channels

تعداد نتایج: 16875267  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده علوم انسانی 1389

abstract poor reading comprehension can result in failure in using references, benefiting from professional gatherings and resources, keeping up with the growing body of knowledge in the virtual world of the internet, and failing to achieve in efl programs. the purpose of the present quasi-experimental study was to explore the effects of background knowledge and previewing narrative and expos...

Journal: :CoRR 2017
Vincent Y. F. Tan Si-Hyeon Lee

We consider a covert communication scenario where a legitimate transmitter wishes to communicate simultaneously to two legitimate receivers while ensuring that the communication is not detected by an adversary, also called the warden. The legitimate receivers and the adversary observe the transmission from the legitimate transmitter via a three-user discrete or Gaussian memoryless broadcast cha...

2004
Nihar Jindal Andrea J. Goldsmith

In this thesis we investigate the capacity of multi-user wireless communication channels. We first establish a duality relationship between the Gaussian broadcast and multiple-access channels. This relationship allows us to characterize the capacity region of the Gaussian broadcast channel in terms of the dual Gaussian multiple-access channel, and vice versa. This relationship holds for constan...

Journal: :IEEE MultiMedia 1998
Borko Furht Raymond Westwater Jeffrey Ice

is coming of age. In addition to reprocessed audio or video that's transferred from radio or TV to the Internet, webcasting now also means broadcasting new, original content—sometimes live— on the Web. Taking advantage of streaming audio and video technology, site producers can bring real-time sound and vision to the Web. With the present technology, audio and video must be compressed almost to...

2011
Hung-Jen Tu

The emergence of the Internet has forced a wealth of firms to explore a new form of channels of distribution, i.e., Internet channels. Nevertheless, empirical studies evaluating the values to firms from the adoption of Internet channels are limited. In order to fill in the literature gap, an empirical study to assess the effect of Internet channels on the market value was conducted in Taiwan. B...

2008
Anant Sahai David Tse Changho Suh

First we consider compound channels which have common messages to all the receivers. The best-well known example is TV broadcast. Notice that compound channels are different from broadcast channels with independent messages to different receivers. Fig. 18.1 illustrates the encoding and decoding operations for the compound channel. Since the message is common, we have only one message w. From w,...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1392

the present paper investigates how far ideologies can be tease out in discourse by examining the employed schemata by two ideologically opposed news media, the bbc and press tv, to report syria crisis during a period of nine months in 2011. by assuming that news is not a valuefree construction of facts and drawing on micro structural approach of schema theory, for the first time in discours...

Journal: :CIT 2008
Muthuswamy Vijayalakshmi Arputharaj Kannan

The rapid development of wireless communication technology and battery-powered portable devices is making mobile information services increasingly popular. Since the bandwidth resource of wireless networks is scarce and the mobile devices have a limited battery capacity, any solution for information access must be devised in such a way that time and power consumption for the devices are minimiz...

Babak Vaziri, Reza Ravanmehr, Shiva Zendehdelan

Wireless mesh networks (WMNs) which mediates the broadband Internet access, have been recently received many attentions by the researchers. In order to increase capacity in these networks, nodes are equipped with multiple radios tuned on multiple channels emerging multi radio multi-channel WMNs (MRMC WMNs). Therefore, a vital challenge that poses in MRMC WMNs is how to properly assign channels ...

1999
Sohail Hameed Nitin H. Vaidya

With the increasing acceptance of wireless technology, mechanisms to efficiently transmit information to wireless clients are of interest. The environment under consideration is asymmetric in that the information server has much more bandwidth available, as compared to the clients. It has been proposed that in such systems the server should broadcast the information periodically. A broadcast sc...

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