Location History:
- San Diego, CA (US) (1999)
- L.A., CA (US) (2003)
Company Filing History:
Years Active: 1999-2003
Title: Innovations of David D. Feldman
Introduction
David D. Feldman is a notable inventor based in Los Angeles, California. He has made significant contributions to the field of telecommunications and signal processing. With a total of 2 patents, his work focuses on enhancing bandwidth and power efficiency in communication systems.
Latest Patents
Feldman's latest patents include "Two-dimensional constellation generation, pruning, and partial gray coding for bandwidth and power efficiency." This invention presents an improved method for generating constellations transmitted by a transmitter. The process involves determining the approximate symbol error rate (SER) for each possible subconstellation. Each subconstellation is then scaled in terms of power to ensure they all have the same symbol error rate. The subconstellation that requires the least power to generate is selected as the pruned constellation for use by the transmitter.
Another significant patent is "Power recycling for modulating array transmitters." This invention features a modulating array transmitter that employs a power recycling method and power recovery circuit. It utilizes multiple multiphase power stages to generate a multi-point QAM constellation. The outputs from these stages are combined in an output power combiner, which uses terminating resistors on its difference power port(s). The invention recovers power that would typically be dissipated in these resistors, converting it to DC power for use in power amplifiers, thus recycling the difference power for reuse.
Career Highlights
David D. Feldman is currently employed at Lockheed Martin Corporation, where he continues to innovate in the field of telecommunications. His work has been instrumental in developing technologies that improve communication efficiency and reliability.
Collaborations
Feldman collaborates with Frank Chethik, a fellow innovator in the industry. Their combined expertise contributes to advancements in their respective fields.
Conclusion
David D. Feldman's contributions to telecommunications through his innovative patents demonstrate his commitment to enhancing technology for better efficiency and performance. His work at Lockheed Martin Corporation continues to influence the industry positively.