In Until recently, artificial intelligence researchers have frowned upon the application of probability propagation in Bayesian belief networks that have cycles. The probability propagation algorithm is only exact in networks that are cycle-free. However, it has recently been discovered that the two best error-correcting decoding algorithms are actually performing probability propagation in bel...

descriptave and causal methods-are compared.the population of the city and its staff includes experts in physical education official irib number 377 was the capital of kurdistan.the measuring instrument consisted of a questionnaire survey requires the establishment of private tv sport in which a pilot study reliability 0/824, respectively. to analyze the data from software spss version 19, t-te...

Merging the adaptive networks with the free space optical (FSO) communication technology is a very interesting field of research because by adding the benefits of this technology, the adaptive networks become more efficient, cheap and secure. This is due to the fact that FSO communication uses unregistered visible light bandwidth instead of the overused radio spectrum. However, in spite of all ...

ROGUE SIGNAL THREAT ON TRUST-BASED COOPERATIVE SPECTRUM SENSING IN COGNITIVE RADIO NETWORKS By David Scott Jackson, Ph.D. A dissertation proposal submitted in partial fulfillment of the requirements for the degree of Ph.D. at Virginia Commonwealth University. Virginia Commonwealth University, 2015. Major Director: Meng Yu, Ph.D. Associate Professor, Department of Computer Science Cognitive Radi...

In this article, the Multimedia Broadcast and Multicast Service (MBMS) as standardized in 3GPP is presented. With MBMS, multicast and broadcast capabilities are introduced into cellular networks. After an introduction into MBMS technology, MBMS radio bearer realizations are presented. Different MBMS bearer services like broadcast mode, enhanced broadcast mode and multicast mode are discussed. S...

COGnitive radio systems for efficient sharing of TV white spaces in EUropean context (COGEU) is a threeyear Specific Target Research Project (STREP) supported by the EU 7th Framework Program which concluded in 2013. This paper presents the COGEU TV white space (TVWS) radio transceiver, a key demonstrator and deliverable of the project. The demonstrator consists of a Software Defined Radio (SDR)...

Besides amateur-radio satellites, the most interesting satellites for radio amateurs are weather (imaging) satellites: radio amateurs have successfully built weather-satellite image reception equipment for all known weather satellites and all known image transmission standards. Radioamateurs also pioneered satellite TV reception using small antennas much earlier than this became a mass-produced...

Orthogonal frequency division multiplexing (OFDM) has been an effective technique to combat multipath fading in wireless communications. It has been successfully used for HF radio applications and has been chosen as the standard for digital audio broadcasting and digital terrestrial TV broadcasting in Europe and high-speed wireless local areas networks. In this paper an overview of a multiple c...