The Engineering School of the National Autonomous University of Mexico (UNAM) opened the program of Telecommunications Engineering at 1991. One of the courses is Random Signals Analysis, a course about stochastic signals applied to communications engineering. This type of course is not common at bachelor level for engineers; however, the topics are essential for this program. Given the profile ...

The telecommunications environment is changing its face towards an open market of information services where the vision is "information any time, at any place, in any form". Within this electronic market the aspects of service customization and instant service provision are of fundamental importance. In this context a new paradigm is gaining momentum, referred to as "Intelligent Agents". This p...

Novel chiral Er complexes based on both enantiomers of extended iPrPyBox (2,6-Bis[4-isopropyl-4,5-dihydrooxazol-2-yl)]pyridine) show strong near-infrared circularly polarized luminescence (CPL) within the 1400 to 1600 nm spectral region under 450 irradiation. CPL activity in this region, despite being particularly rare, would open way potential applications domain, e.g., fiber-optic telecommuni...

Abstract Visible light communications (VLC) are an emerging technology that uses light-emitting diodes (LEDs) and photodiodes to provide high-speed communication between devices employing the visible spectrum. Taking advantage of a large unregulated spectrum with capacity for gigabit per second data rates, VLC has potential enable more recent future telecommunications technologies, such as IoT,...

Modern telecommunication systems are showing an increasing degree of complexity. This is especially true for projects actively engaged in the process of convergence between Internet-type of data communications, telecommunications and broadcast – often including several forms of mobility. While it is intuitively obvious that such complex systems and projects will probably benefit from formal mod...

Functioning and effective telecommunications are fundamental during and after disasters, be they natural or man-made, and it is specially in these particular situations that communications might congest at a very high rate. Therefore, emergency sessions need to be prioritized over non-emergency sessions to ensure the best coordination. For the more, it becomes clear that the control of Quality ...

Paper presents telecommunications security issues with dynamically changing networking. Paper also presents performance indicators of authentication as an integral part of the approach to non-public information. Expected level of security depend on relevant ITS services requirements, different solutions require different levels of quality. Data volumes transferred both in private data vehicle o...

The demand from social market for high speed broadband communications over wireless media is pushing the requirements of both the mobile and fixed networks. The past decade has witnessed tremendous advancement in the blooming development of mobile communications including mobile-to-mobile and mobile-to-fixed networks. Wireless fixed and cellular networks of future generation will need to suppor...

Since 1984, the Lifeline Assistance program (“Lifeline”) has been the centerpiece of efforts by U.S. telecommunications regulators to ensure that traditional local telephone service is affordable for low-income households. Lifeline reduces monthly local telephone bills for customers who sign up for the benefit through a credit on their basic service charge. The Federal Communications Commission...