Paul R Milligan

Title: Paul R. Milligan: Innovator in Multicode Spread Spectrum Communications

Introduction

Paul R. Milligan is a notable inventor based in Calgary, Canada. He has made significant contributions to the field of communications technology, particularly through his innovative work on multicode spread spectrum systems. With a total of 2 patents to his name, Milligan's inventions have the potential to enhance communication efficiency and reliability.

Latest Patents

One of Milligan's latest patents is the Multicode Spread Spectrum Communications System. This modulation scheme assigns a number N of Spread Spectrum (SS) codes to an individual user, where the number of chips per SS code is M. When viewed as Direct Sequence Spread Spectrum, the system requires up to N correlators (or equivalently up to N Matched Filters) at the receiver, with a complexity of the order of NM operations. The patent addresses the challenges posed by non-ideal communication channels, which can cause InterCode Interference (ICI). Milligan introduces three new types of MCSS: Type I, which allows detection using a sequence of partial correlations with a complexity of the order of M operations; Type II, which enables detection through low complexity parallel operations that reduce ICI; and Type III, which utilizes a filter suitable for ASIC implementation or on Digital Signal Processors, effectively reducing the impact of multipath. In addition to low complexity detection and reduced ICI, MCSS is also spectrally efficient.

Career Highlights

Milligan is currently associated with Wi-Lan Inc., a company known for its advancements in wireless communication technologies. His work at Wi-Lan has allowed him to further develop his innovative ideas and contribute to the company's success in the industry.

Collaborations

Throughout his career, Milligan has collaborated with notable colleagues, including David L. Snell and Michel T. Fattouche. These collaborations have likely enriched his work and led to further advancements in the field of communications.

Conclusion

Paul R. Milligan is a distinguished inventor whose work in multicode spread spectrum communications has the potential to revolutionize the way we approach wireless communication. His innovative patents and contributions to Wi-Lan Inc. highlight his commitment to advancing technology in this critical field.