Wireless broadband access networks have been positioning themselves as a good solution for manufacturers and users of IoT (internet of things) devices, due mainly to the high data transfer rate required over terminal devices without restriction of information format. In this work, a review of two Radio over Fiber strategies is presented. Both have excellent performance and even offer the possibility to extend wireless area coverage where mobile networks do not reach or the 802.11 network presents issues. Radio Frequency over Fiber (RFoF) and intermediate Frequency over Fiber (IFoF) are two transmission strategies compatible with the required new broadband services and both play a key role in the design of the next generation integrated optical–wireless networks, such as 5G and Satcom networks, including on RAU (Remote Antenna Unit) new functionalities to improve their physical dimensions, employing a microelectronic layout over nanometric technologies.

The main objective of the proposed linear laser driver (LLD) is to reduce signal distortion in an analog direct modulation laser configuration used for intermediate frequency over fiber links. This work draws on an open-loop configuration featuring two differential pair blocks in a cascade arrangement to achieve a bandwidth measurement of 415 MHz at the half-power point, a total harmonic distortion of 4.57% for a fundamental frequency of 100 MHz, and an amplitude of 100 mV_pp. The LLD provides a gain of 12.3 dB for a differential output and an output impedance of 46 $\Omega$. The design, layout, and integration correspond to the process design kit for TSMC 65-nm CMOS technology. Experimental results show the advantage over other previously reported laser drivers.

Online education in developing countries is limited by reduced access to new information technologies that reduce the number of attendants to online courses and high quality interactive teaching material, this condition makes difficult to improve learning results. Globalization must allow to children, young and adult people to be able to develop new skills and competences in learning environments in an universal language to process and share knowledgement around the world. This document proposes a technical and technological solution for the installation of a digital television studio that can be used in an online educational framework no licensed, in order to generate learning environments and methodologies for the production of interactive and didactic material to provide a solution for online education and build strategies of cooperation for the diffusion of didactic contents in national and international educational centers.

Wireless Network Access in Ecuador are used to provide connectivity for rural areas, this document analyze a particular case in the province of Pichincha in Ecuador, where there are several populations that does not access to telecommunication services due to irregular land and geographical location in Andean region, for this reason this article consider the design of a wireless access network using CDMA 450 in order to provide to subscribers broadband convergent telecommunication services over the same wireless communication channel.

At present time Universidad de Las Américas (UDLA) is processing a huge amount of information between their campuses. An alternative network technology can provide communications to main offices and data center. Wireless networks have limits for area coverage and bit rates including spectrum licensing. FSO technology (Free Space Optics) allows configuring a dedicated link with high bit rates and no licensing, to provide University a redundant communications system. The deployment of a FSO network discards utilization of telecommunications carrier network due to all campuses can be connected with their own communications infrastructure.