Jeffrey J Marrah

Title: Innovations and Contributions of Jeffrey J. Marrah

Introduction

Jeffrey J. Marrah, an inventive mind located in Kokomo, Indiana, has made significant strides in the field of communication technology. With 23 patents to his name, Marrah's work has had a profound impact on various aspects of wireless communication systems.

Latest Patents

Among his latest patents is the invention titled "Hierarchically modulated OFDM communication from a satellite-based transmitter with reduced secondary data loss from clipping." This innovative method focuses on transmitting high priority data and low priority digital data via hierarchically modulated, orthogonal frequency division multiplexing (OFDM) from an earth-orbiting satellite. The design allows the transmitter amplifier to operate with less back-off from saturation, minimizing data loss from clipping. By utilizing a first deterministic rule based on sample power comparisons, Marrah ensures that low priority samples are optimally concentrated on high priority samples with lower power, facilitating a more efficient communication process.

Another noteworthy invention is the "System and method of a stereo receiving system." This invention encompasses a stereo receiving system that integrates multiple antennas, a receiving device, summing devices, a phase lock loop device, a controllable phase shifter, and a gain-control device. By receiving RF signals with potentially different phases, the system is designed to enhance the signal-to-noise ratio, ultimately improving the clarity and reliability of wireless communications.

Career Highlights

Throughout his career, Marrah has contributed his talents to notable companies, including Delco Electronics Corporation and Delphi Technologies, Inc. His expertise in communication technologies has been instrumental in developing innovative systems that advance the industry.

Collaborations

Marrah's journey includes collaborations with talented individuals such as Richard A. Kennedy and Gregory J. Manlove. Working alongside such esteemed colleagues has allowed him to further refine his inventions and bring new ideas to life within the realm of communications.

Conclusion

Jeffrey J. Marrah exemplifies the spirit of innovation within the field of communication technology. His numerous patents demonstrate his commitment to improving wireless communication systems and paving the way for enhanced data transmission methods. As he continues to push the boundaries of technology, Marrah remains a prominent figure among inventors dedicated to advancing industry standards.