Orthogonal frequency division multiple access (OFDMA) is a promising technique for high data rate communications in future cellular systems. Since frequency resources are universally reused in every cell in a system, a typical OFDMA system tries to maximize the spectral efficiency. Users located near the cell-edge tend to have the weakest signal strength. So they might experience severe inter-c...

In the context of multi-hop cellular communications, user equipment devices (UEs) with relaying capabilities provide a virtual infrastructure that can enhance the cell spectral efficiency. UE relays, which are generally transparent to the destination user and lack channel state information, mainly operate in an open-loop mode. Most open-loop transmission techniques for relaying are based on ort...

Code-division multiple-access is a promising technique for communication systems. Recently, many demodulation schemes have been proposed which take account of inherent multiple-access interference. In this paper, linear interference suppression as proposed in, e.g., [1], is compared with conventional demodulation based on power-bandwidth plane. This approach is much more general than the compar...

Millimeter wave (mmWave) communication is expected to have an important role in next generation cellular networks, aiming to cope with the bandwidth shortage affecting conventional wireless carriers. Using side-information has been proposed as a potential approach to accelerate beam selection in mmWave massive MIMO (m-MIMO) communications. However, in practice, such information is not error-fre...

A bstmctInternet and cellular technologies are merging to decrease transport costs and enable IP-based applications t o hundreds of millions of cellular users. Real time voice services will continue t o be dominant in future cellular systems and t o reduce system costs it is desirable t o base all services, including voice, on IP. However, the radio spectrum must be efficiently used to provide ...

Introduction: Job satisfaction and organizational commitment are considered prerequisites of internal and external efficiency of an organization. This study was aimed at investigating the relationship between job satisfaction and organizational commitment of health educators of high schools in Hormozgan Province. Methods: In this descriptive-correlational study with respect to data analysis, 11...

although the research on organizational citizenship behaviors (ocbs) has increased dramatically in diverse fields during the past decade, little is known about the ocbs in the information systems area. the purpose of this study was to explore the effect of ocbs on information systems success. in order to perform empirical analyses, measurements on the ocbs constructs based on the five dimension...