Company Filing History:
Years Active: 2000-2001
Title: The Innovative Contributions of Sisay Yirga
Introduction
Sisay Yirga is a notable inventor based in Nepean, Canada. He has made significant contributions to the field of telecommunications and signal processing, holding a total of 6 patents. His work focuses on enhancing the efficiency and performance of modem technologies.
Latest Patents
One of Sisay Yirga's latest patents is titled "Clustering blind convergence process in an adaptive decision feedback equalizer." This invention introduces a blind convergence process for an adaptive decision feedback equalizer that utilizes a quadrature amplitude modulation (QAM) slicer. The process involves initializing forward and feedback tap coefficients with predetermined values and operates in two modes: clustering mode and decision-directed mode. This innovation allows for blind convergence of an equalizer across a wide range of QAM indexes, from 4 to 256.
Another significant patent is the "Method and apparatus for energy detection in a modem." This system is designed for energy detection to identify valid signals in a modem, thereby enabling power savings in both receiver and transmitter circuits. The method includes processing a specified number of signal samples, determining an average energy level, and comparing it with a prescribed energy level threshold. If the conditions are met, a valid signal is declared, activating the modem's transmitter.
Career Highlights
Sisay Yirga has worked with prominent companies in the telecommunications sector, including Nortel Networks Corporation and Northern Telecom Limited. His experience in these organizations has contributed to his expertise in developing innovative solutions in signal processing.
Collaborations
Sisay has collaborated with notable professionals in his field, including Edgar Velez and Ian Dublin. These collaborations have likely enriched his work and contributed to the advancements in his patents.
Conclusion
Sisay Yirga's contributions to the field of telecommunications through his innovative patents demonstrate his commitment to enhancing modem technologies. His work continues to influence the industry and showcases the importance of innovation in driving technological advancements.