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5G for the connected world
\"After the considerable success of LTE, why do we need a new system with a new radio and a new core? First, 5G will boost some of the LTE key performance indicators to a new horizon: capacity, latency, energy efficiency, spectral efficiency and reliability. We will describe the relevant radio and core features to enable optimizations (5G to be 10, 100 or 1000 times better than LTE) in these areas in respective chapters of the book\"-- Provided by publisher.
Book
interview: Dan Sievenpiper
In an interview, Dan Sievenpiper of the University of California in the US, talked about the work behind the paper \"Experimental demonstration of nonlinear waveform-dependent metasurface absorber with pulsed signals.\" He said that their work is focused on the integration of active electronics with electromagnetic structures. They believe that the limits of passive electromagnetic structures have already been reached with many very well-engineered designs. They have reported a new kind of absorbing surface based on a printed periodic structure (a metasurface) that contains nonlinear circuit elements. It is designed specifically for suppressing surface currents generated by high-power pulsed signals. He added that the system is important because it allows absorbers to be tailored to the specific signal of interest. The state-of-the-art includes broadband absorbers, which simply absorb everything, as well as absorbers that can select a particular frequency band.
Journal Article
Broadband networks in the Middle East and North Africa
Just as the steam engine was the driving force behind the Industrial Revolution, broadband Internet is today seen as critical to the transition to knowledge-intensive economies across the world. As a general purpose technology, broadband Internet is considered as a fundamental driver of economic growth and social development, releasing the innovative potential and energy of previously disenfranchised members of the population. Many of the countries in the Middle East and North Africa region (MENA) now recognize that broadband Internet is crucial to their efforts to reduce poverty and create job opportunities, especially for their young populations and for women. The report re-emphasizes the important contribution that broadband Internet can make and assesses the status of existing infrastructure in at least 18 MENA countries. While there is significant potential across the region, however, the take-up of broadband Internet has been slow, and the price of broadband service is high in many countries. In large part, this stems from market structures that, too often, reflect the past when telecommunications were treated as a monopoly utility service. The report finds that there are gaps in infrastructure regionally with no connectivity between neighboring countries in some cases. Similarly, there are gaps within countries exacerbating the (digital) divide between rural and urban areas. The report examines the regulatory and market bottlenecks that are hampering the growth of the Internet in these and other MENA countries: the five North African countries (Algeria, Egypt, Morocco, Libya, Tunisia); the six Mashreq countries (the Islamic Republic of Iran, Iraq, Jordan, Lebanon, Syria, and the West Bank and Gaza economy); the six Gulf countries (Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, the United Arab Emirates); and Djibouti and the Republic of Yemen. The report provides policy and regulatory options for increasing effective use of existing fixed and mobile infrastructure as well as alternative infrastructure networks such as power grids and railroads. It explains the benefits of effective cross-sector infrastructure construction frameworks, highlighting the need to adjust market structures to foster competitive behavior among service providers to bring down prices and stimulate the demand for value-added services to drive future broadband development.
eBook