Location History:
- Lathan, NY (US) (1995)
- Latham, NY (US) (1994 - 1996)
Company Filing History:
Years Active: 1994-1996
Title: Innovations of Ravinder D Koilpillai
Introduction
Ravinder D Koilpillai is a notable inventor based in Latham, NY (US). He has made significant contributions to the field of communication technology, holding a total of 5 patents. His work primarily focuses on enhancing the performance of radio receivers and communication systems.
Latest Patents
One of his latest patents is a low complexity adaptive equalizer radio receiver. This invention is designed for use in U.S. digital cellular radios and effectively demodulates π/4-shifted differentially encoded quadrature phase shift keyed (DQPSK) encoding. It addresses intersymbol interference (ISI) while reducing decoding complexity by utilizing an estimated received constellation that accounts for channel changes over time. The complexity is minimized by tracking fewer estimated reference symbol constellation points and leveraging geometry to estimate the remaining points. Additionally, branch metrics are determined with fewer computations.
Another significant patent is the adaptive phase-locked loop employing channel state information. This method estimates the quality of a communication channel by analyzing the differential phase angle between a received signal and the corresponding transmitted phase angle. It determines a signal to impairment ratio (SIR) as an indicator of channel state information (CSI). A maximum likelihood estimation procedure is used to calculate this CSI metric based on the differential phase angle. This approach is particularly beneficial for differential detectors, phase-locked loops (PLLs), and hard-limited signals.
Career Highlights
Ravinder D Koilpillai is currently associated with General Electric Company, where he continues to innovate in the field of communication technologies. His work has had a profound impact on the efficiency and reliability of communication systems.
Collaborations
Throughout his career, he has collaborated with notable colleagues such as Sandeep Chennakeshu and Raymond L Toy. These collaborations have further enriched his contributions to the field.
Conclusion
Ravinder D Koilpillai's innovative work in communication technology has led to significant advancements in radio receiver design and performance. His patents reflect a commitment to improving communication systems, making him a valuable figure in the field of inventions.