Alvin M Despain

Title: The Innovative Contributions of Alvin M Despain

Introduction

Alvin M Despain is a notable inventor based in Los Angeles, California. He has made significant contributions to the field of adaptive filtering and wireless communication systems. With a total of 13 patents to his name, Despain's work has had a lasting impact on technology.

Latest Patents

One of Despain's latest patents is the "Reduced Complexity Adaptive Multistage Wiener Filter." This invention represents a component of the multistage Wiener filter as an un-normalized vector of filter coefficients within a finite impulse response (FIR) filter. It avoids reliance on the 2-norm operation of the un-normalized vector of coefficients. By replacing the 2-norm operation with less expensive operations, the filter adds only a few additional addition, subtraction, and multiplication operations. This innovation allows for the elimination of square root and arithmetic division operations in some implementations of the multistage Wiener filter.

Another significant patent is for "Efficient Adaptive Filters for CDMA Wireless Systems." This invention utilizes an adaptive filter in a receiver to mitigate multipath radio propagation and filter out interfering signals. The characteristics of the initial stage of the filter are determined by cross-correlation of a generated pilot signal and the input signal. The integration of the correlation is performed over a time period selected to be an integral number of symbol periods, ensuring that the pilot channel signal correlation is the primary contribution to the signal used to establish the coefficients of the adaptive filter.

Career Highlights

Throughout his career, Alvin M Despain has worked with various companies, including Acorn Technologies, Inc. and Purchased Patent Management LLC. His expertise in adaptive filtering has positioned him as a key player in the development of advanced communication technologies.

Collaborations

Despain has collaborated with notable individuals in his field, including R Stockton Gaines and Petros A Ioannou. These collaborations have further enhanced his contributions to innovative technologies.

Conclusion

Alvin M Despain's work in adaptive filtering and wireless communication systems showcases his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving efficiency and performance in communication systems.