Meng-Chang Doong

Title: Innovations by Meng-Chang Doong

Introduction

Meng-Chang Doong is a notable inventor based in Sunnyvale, CA (US). He has made significant contributions to the field of communication systems, particularly in the areas of channel tracking and frequency offset compensation. With a total of 2 patents, his work has advanced the capabilities of wireless communication technologies.

Latest Patents

One of his latest patents is titled "Method and apparatus of iterative channel tracking for MIMO-OFDM system." This invention discloses methods and systems for channel estimation using an iterative channel tracking algorithm. It combines multiple input multiple output (MIMO) technology with orthogonal frequency division multiplexing (OFDM). The initial channel estimation of a data packet utilizes the first preamble inserted in front of the OFDM blocks. After demodulating subsequent OFDM blocks, the iterative channel tracking method is employed for channel estimation until the next preamble is received. This method is based on the received signals and the demodulated results of the subsequent OFDM blocks.

Another significant patent is "System and method of frequency offset compensation for radio system with fast Doppler shift." This invention provides a system and method for frequency offset compensation in a wireless system involving a fast-moving radio terminal associated with a locomotive and a stationary radio terminal linked to a base station. The invention utilizes advanced frequency offset prediction to quickly track Doppler Shift caused by the fast-moving locomotive. In one embodiment, the frequency offset prediction is based on a first plurality of coarse frequency offsets, first-order derivatives, and second-order derivatives of these offsets. In another embodiment, it relies on a plurality of previous frequency offsets according to a Doppler shift model.

Career Highlights

Meng-Chang Doong is currently employed at Lilee Systems, Ltd., where he continues to innovate in the field of wireless communication. His work has been instrumental in developing technologies that enhance the performance and reliability of communication systems.

Collaborations

He has collaborated with notable colleagues such as Jia-Ru Li and Yu-Wei Lee, contributing to the advancement of their shared projects and innovations.

Conclusion

Meng-Chang Doong's contributions to communication technology through his patents demonstrate his expertise and commitment to innovation. His work continues to influence the field and pave the way for future advancements in wireless communication systems.