Efficient channelized technology based on filter banks

With the appearance of novel radar signal with low intercept probability, the bandwidth of radar receiver is wider and wider. Wideband digital receiver becomes a research hotspot in the field of communication, radar and electronic reconnaissance, etc. As one of wideband digital receiver systems, digital channelized receiver has become a research emphasis due to the characteristics of full probability receiving and processing multiple signals. Digital channelized technology and signal sampling theory are deeply studied and an efficient channelized model is derived based on filter banks. The correctness of the model is verified by computer simulation The model has less computation compared with the traditional model, which is suitable for engineering application

Invited Paper: Antenna Selection in Energy Efficient MIMO Systems: A Survey

With the explosive growth and need for high-speed wireless communications, more and more energy is consumed to support the required quality of service. Therefore, energy efficient or green communication has become a very hot topic under the ground of limited energy resource and environmentally friendly transmission schemes. MIMO technique is capable of reducing the transmission power thanks to its diversity and multiplexing gain. Moreover, antenna selection(AS) is an alternative to extract many of the benefits in MIMO systems with a reduced cost of complexity and power. Although many works including several survey papers have investigated AS in MIMO systems, the goal of these works is only the capacity maximization or error rate minimization, which fails to guarantee the optimality of the energy efficiency in MIMO systems. In this paper, we overview the state of the art in the AS schemes in energy efficient MIMO systems, the goal of which is to optimize the energy efficiency of the whole system. Specifically, we introduce energy efficient AS in point-to-point MIMO, cooperative MIMO, multiuser MIMO and largescale MIMO systems, respectively. Several challenging and practical issues in this area are also addressed.

Recent Progress in High-speed and High Spectral Efficiency Optical Transmission Technology

Increasing the spectral efficiency and per channel data rate have historically been shown to be the most cost-effective method to meet the need of ever growing capacity demand in the core network. In this paper we review recent progress in high-speed and high-spectral-efficient optical transmission technology. We discuss spectrally efficient modulation and detection technologies that have been experimentally explored for future 100-Gb/s and above optical transmission system. Emerging methods aiming at extending system reach for noise and nonlinearity-stressed high spectral efficiency optical transmission systems have also been reviewed. We show that spectrallyefficient multilevel coding coupled with polarization multiplexing and digital coherent detection has the potential to enable 400Gb/s per channel WDM system operating with existing 50GHzspaced WDM infrastructure at a spectral efficiency of 8b/s/Hz.

An Advanced Spectrum Allocation Algorithm for The Across-Cell D2D Communication in LTE Network with Higher Throughput

In the hybrid LTE cellular network with D2D(Device-to-Device) communication, D2D communication technologies can improve the spectral efficiency significantly. However, the D2D users have to reutilize the spectrum which is allocated to the cellular users. Therefore, the co-channel interference will be more complicated in the case of crosscell D2D communications. In this article, a novel spectrum allocation algorithm for inter-cell D2D communication considering the traffic load is proposed. The traffic load can be balanced by the proposed algorithm. Meanwhile D2D users can multiplex the spectrum allocated to a number of cellular users with a certain percentage to meet the requirements of Qo S of D2D communications and reduce the interference to cellular users. Finally, the simulation results demonstrate that the proposed algorithm can meet the needs of D2D users, balance the traffic load and improve the overall throughput of the system.

Design and realization of a high productivity cluster-based network application reconfigurable accelerator board

Improving processor frequency to strengthen massive data processing capability will lead to incremen-tal server marginal costs and bring about a series of problems such as power consumption,managementcomplexity,etc.Based on the field programmable gate array(FPGA),TCP offload engine(TOE),zero-copy and other key technologies,this paper describes the design and realization of a reconfigurable accel-erator board.In this board,TCP/IP protocol will be moved to high-speed reconfigurable acceleratorboard.The packets will be labeled according to the protocol and submitted to the upper data processingsoftware after IP-quintuple filtering in hardware.Reconfigurable accelerator board obtains higher perfor-mance speed-up compared with ordinary NIC card.

Universities and Global Market

The article interested in the universities in the global market. Author briefly describes the situation of the many universities of the point of view of education, research, orientation, system of financing and management of the universities. The whole article is based on the author＇s practical experiences. The research objective was to determine how the professional community is looking at private universities and state universities. It was based on the opinion of the quality of graduates and the number of academic staff who are working at state universities These academics have mostly negative view of private universities as well as the knowledge of graduates of these private schools. However, the opinion ofstaffin practice, especially managers in manufacturing companies, trading companies, companies selling services, as well as senior officials in government, are not so negative. By contrast in certain areas such as marketing, business, management, Information and Communication Technology etc., was rather neutral or positive. The politicians were interested about these information with regard to educational reform （reform of universities is still not actual--note the author） and the expected necessary cuts of spending to higher education from the state budget. Unfortunately, the research project due to political changes in 2009 was not completed and obtained only partial results. Despite of this fact the author decided to process the article below Opinions on the topic of public vs. private univeristies were mainly obtained informally from experts from academic area （both public and private）, managers, various specialists, but also from the students themselves. In conclusion man can say that the demand for people who are able to quickly demonstrate their knowledge in practice is still stronger. The title becomes second-rate （unfortunately not quite in the public and state administration）. Very strong demand is the active practice of communication in English （it fulfilles especially private universities） Graduates of technical universities in the classical fields are sought less in the labor market. Very high pressure is developed by state universities to private. This implies a lack of professors and associate professors who can work in full time at private universities which are more flexible and better adapt to labor market requirements. Stronger position have private universities that are in any way connected with foreign partners from developed countries

Perpetual Professor： Changing Patterns of Faculty-Student Interaction in the Twenty-First Century

Current communication technologies have provided new modalities for students to contact professors outside of the normal office settings and regulated office hours traditionally found in higher education. This study concentrates on the faculty perceptions of how the usage of e-mail and cell phones has changed interactions with students over the past decade. General levels of usage are analyzed as well as correlation to curricular disciplines, An online survey of faculty members at Indiana University of Pennsylvania found maior changes in the type and frequency of contact between professors and students as well as a shift from personal contact to e-mail and telephone usage. The expanded level of communication opportunities has placed faculty in the position of having to extend direct student-oriented time outside of the classroom, while continuing to maintain academic scholarship and other professional responsibilities.

Rankings of Universities and Power in the Digital Age

This paper will discuss one topic in the current debate on higher education： How power is exercised between universities？ How do colleges determine what the best college is？ What are the differences in the excersise of power in the digital age？ The authors analyze one of the mechanisms of relationship and contact between different universities： the rankings. They will discuss the practices that allow certain values and organizations they are becoming central nodes between universities and the influences of the information and communication technologies in the measurement mechanisms. The authors seek to show the rankings serve as mechanisms to exercise power among universities. These measurements become a tool and justification in competition between universities for resources such as funding, prestige, and student demand. The analysis is based on the University of Mexico, the authors use the ranking of the best universities in Latin America and the best universities in Mexico.

ICT Paradox： Cost Efficiency of Web Based Learning

Indonesia government in this term Directorate General of Higher Education providing grants for ICT infrastructttres supplied through all bequest competitions. The kinds and amount of the grants are various which can be used to provide hardware to make ICT based teaching materials. The government issued a huge amount of funds, therefore, it must be balanced with an optimal utilization. This research aims to analyze cost efficiency of dual mode web-based learning in Indonesia. The object of this research is four higher educations in Indonesia. The analysis is done by comparing the average cost per student and the average cost per subject among 4 institutions. The result showed that there are institutions that issued higher cost compared with the others in producing the same learning media.