Company Filing History:
Years Active: 1990-1993
Title: **Jan-Erik Stiernvall: Innovator in Signal Processing**
Introduction
Jan-Erik Stiernvall, based in Sollentuna, Sweden, is a prominent inventor known for his contributions to the field of signal processing. With two patents to his name, Stiernvall has made significant advancements that are vital for modern communication technologies. His innovative approaches have been pivotal in addressing challenges associated with signal fading and frequency correction in coherent receivers.
Latest Patents
Stiernvall's latest patents showcase his expertise in enhancing communication systems. The first patent involves a **System for Reducing the Effects of Signal Fading on Received Signals**. This technology involves transmitting signals in synchronizing sequences and data sequences over a fading channel to a Viterbi receiver. The methodology revolves around creating part channel estimates for individual antennas and forming metric values essential for Viterbi state transitions using received signals. The process ensures improved reliability in communication despite challenging fading conditions.
His second patent, **Apparatus for Correcting Frequency in a Coherent Receiver**, is focused on radio communication installations, such as mobile phone systems. This apparatus includes a controllable local oscillator that generates a mixing signal for frequency conversion of received signals. By calculating frequency errors and generating control signals, the system effectively eliminates significant parts of frequency errors, optimizing performance in the transmission of digital information.
Career Highlights
Jan-Erik Stiernvall has established a notable career at **Telefonaktiebolaget LM Ericsson**. His work at Ericsson has allowed him to be at the forefront of technological advances in mobile communications. The impact of his inventions extends beyond patents, influencing the industry standards and protocols that govern modern telecommunications.
Collaborations
Throughout his career, Stiernvall has collaborated with esteemed colleagues, including Tomas O. Backstrom and Ragnar E. Kahre. These collaborations have fostered an environment of innovation and technical excellence, leading to groundbreaking solutions that enhance the performance and reliability of communication systems.
Conclusion
Jan-Erik Stiernvall exemplifies the spirit of innovation within the field of signal processing. His inventions not only address pressing challenges in the industry but also pave the way for future advancements in communication technology. With a strong track record and a commitment to excellence, Stiernvall continues to contribute to the evolution of telecommunications, making a lasting impact on how we connect and communicate.