William E L Leigh

Title: William E L Leigh: Innovator in Communication Technology

Introduction

William E L Leigh is a notable inventor based in Del Mar, California. He has made significant contributions to the field of communication technology, holding 2 patents that showcase his innovative approach to data transmission and processing.

Latest Patents

One of his latest patents is a "Channel encoding and decoding method and apparatus." This invention relates to a communication system where multiple remote units encode data bursts using a predetermined codeword set. The encoded data bursts are transmitted to a hub station over a multiple-access channel. Upon receiving a data burst, the hub station demodulates it and correlates it with each codeword in the set to identify the one with the maximum correlation. This correlation is then used to derive timing synchronization signals and carrier frequency adjustment signals, which are sent back to the remote unit. These signals help the remote unit synchronize its timing or adjust its carrier frequency for future transmissions. Additionally, the hub station can estimate the signal-to-noise ratio using this correlation.

Another significant patent by Leigh is the "Vectored demodulation and frequency estimation apparatus and method." This invention focuses on digitally demodulating QPSK signals. The process begins with resampling the digitally sampled data burst using various predetermined timing hypotheses. The timing offset is determined through an analysis of the resampled data. The data burst is then resampled based on this timing estimation. The modulation is removed by squaring the complex I/Q pairs, and the data is transformed into the frequency domain using a Chirp-Z Transform. The highest spectral power is utilized to determine the frequency offset, while the phase offset is also calculated to adjust the data burst accordingly.

Career Highlights

William E L Leigh has established himself as a key figure in the communication technology sector. His work at Tachyon, Inc. has allowed him to apply his innovative ideas in practical applications, contributing to advancements in data communication systems.

Collaborations

Leigh has collaborated with notable professionals in his field, including Donald Wesley Becker. Their combined expertise has furthered the development of innovative solutions in communication technology.

Conclusion

William E L Leigh's contributions to communication technology through his patents and work at Tachyon, Inc. highlight his role as an influential inventor. His innovative methods for data encoding and demodulation continue to impact the industry positively.