Douglas R Anderson

Title: Innovations of Douglas R Anderson

Introduction

Douglas R Anderson is an accomplished inventor based in Van Nuys, CA (US). He holds a total of 2 patents that showcase his expertise in signal processing and digital communication technologies. His innovative contributions have significantly impacted the fields of modulation detection and coded digital transmission.

Latest Patents

One of Anderson's latest patents is a "Modulation detector and classifier." This invention involves a signal detector and classifier designed for signals with inherent event periodicity, such as digital modulations. The process includes passing a band of frequencies through multiple paths with varying delays, combining pairs of bands, and applying Fourier transformation or filtering to produce signals that reflect the received signal content. This invention is capable of determining frequency, symbol rate, and symbol phase, and it can detect higher orders of modulation as well as hybrid modulation. The performance of this invention is enhanced through interstage filtering with decreasing bandwidth, and it introduces novel ambiguity transform circuits.

Another significant patent is the "Method of and apparatus for transmitting and receiving coded digital." This system is designed for transmitting digital information, such as audio or video, over a lossy or dispersive medium. It prioritizes the encoding of important bits using a (7,k) 8-ary Reed Solomon code, while less important bits are encoded into (7,k+1) or (7,k+2) codes. The modulation of code words onto multiple tones or subcarriers is a key feature, and the decoding process involves demodulating subcarriers and generating candidate code words from demodulated symbols. The completion of decoding relies on maximizing an adaptive maximum likelihood test statistic.

Career Highlights

Throughout his career, Douglas R Anderson has worked with notable companies, including Psr Products, Inc. and TRW Limited. His experience in these organizations has contributed to his development as an inventor and innovator in the technology sector.

Collaborations

Anderson has collaborated with several professionals in his field, including Patrick J Ready and William B Adams. These collaborations have likely enriched his work and led to further advancements in his inventions.

Conclusion

Douglas R Anderson's contributions to the fields of signal processing and digital communication are noteworthy. His innovative patents reflect his dedication to advancing technology and improving communication systems.