Donald John Rasmussen

Title: Innovations of Donald John Rasmussen

Introduction

Donald John Rasmussen is a notable inventor based in Fort Wayne, Indiana. He holds a total of 12 patents, showcasing his significant contributions to the field of technology and engineering. His work primarily focuses on advanced waveform modulation techniques, which have applications in various communication systems.

Latest Patents

Among his latest patents is the "Phase mapping for QPSK/QBL-MSK waveform." This invention describes a method of pulse shaping a spread signal of serially formatted in-phase (I) and quadrature (Q) waveforms. The method involves examining adjacent chips of the I and Q waveforms at a symbol boundary. It determines if one of the waveforms includes two adjacent chips separated by a single chip period. If the chips are of the same value, the method extends a peak value between the chips and zeros the other waveform during the extended duration. Conversely, if the chips are of opposite values, one chip is zeroed while a chip is inserted into the other waveform.

Another significant patent is the "Synchronization technique for serial modulated waveforms." This invention provides methods and apparatus for synchronization detection of a received serial offset quadrature pulse shaped waveform. The waveform is demodulated into a serial baseband signal and correlated with segments of a symbol synchronization sequence. The correlation strength estimates are computed to detect a coarse synchronization, and the signals are phase corrected to detect a fine synchronization.

Career Highlights

Donald has worked with several prominent companies, including ITT Manufacturing Enterprises, Inc. and ITT Industries, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in communication technologies.

Collaborations

Throughout his career, Donald has collaborated with notable individuals such as Michael Mayor and Eric A Whitehill. These partnerships have likely enriched his work and led to further innovations in his field.

Conclusion

Donald John Rasmussen's contributions to technology through his patents and collaborations highlight his role as a significant inventor. His innovative methods in waveform modulation continue to influence the field of communication systems.