Francisco Javier Jimenez Marquina

Title: Francisco Javier Jimenez Marquina: Innovator in Digital Communication Systems

Introduction

Francisco Javier Jimenez Marquina is a notable inventor based in Valencia, Spain. He has made significant contributions to the field of digital communication systems, particularly in the area of multi-user transmission over electric networks. With a total of 3 patents, his work has advanced the capabilities of communication technologies.

Latest Patents

One of his latest patents is an "Automatic gain control system for multi-user digital OFDM transmission systems over the electric network." This innovative system includes multiple user kits and a head-end kit that communicate bi-directionally over the electricity network. Its essential features include carrier-by-carrier treatment of transmission and reception signals, as well as control of transmission power in each kit. This system maximizes the number of users, enhances transmission capacity, accommodates signals from users at varying distances, prevents overflow production, optimizes average power for communication range, and minimizes the bits required for analog/digital conversion during reception.

Another significant patent is the "Process for synchronization in the downstream of multiple users in a point multipoint system with OFDM modulation." This invention is applicable to bi-directional communication over the electricity network and allows for synchronization in time and frequency among multiple users in a multi-carrier OFDM communication system. It is characterized by the generation of synchronization sequences using two identical synchronization symbols, which are periodically transmitted from the head-end to the users. This process helps estimate and correct the sampling frequency while simultaneously determining the start time of each OFDM symbol.

Career Highlights

Throughout his career, Francisco has worked with companies such as Diseño de Sistemas en Silicio, S.A. and Diseno de Sistemas En Silicio. His experience in these organizations has contributed to his expertise in developing advanced communication systems.

Collaborations

Francisco has collaborated with notable professionals in his field, including Juan Carlos Riveiro Insua and Nils Hakan Fouren. These collaborations have further enriched his work and innovations.

Conclusion

Francisco Javier Jimenez Marquina is a distinguished inventor whose contributions to digital communication systems have paved the way for advancements in multi-user transmission technologies. His innovative patents reflect his commitment to enhancing communication capabilities over electric networks.