Jian Cheng

Title: Innovations by Inventor Jian Cheng

Introduction

Jian Cheng is a notable inventor based in Guangzhou, China. He has made significant contributions to the field of signal processing, particularly in the development of systems and methods for spread spectrum signal receivers. With a total of two patents to his name, Cheng's work has the potential to enhance the performance of navigational receivers.

Latest Patents

Cheng's latest patents include the "Correlator sum method for spread spectrum signal receivers." This invention provides systems and methods for faster acquisition and more stable tracking of spread spectrum signals with lower computational load requirements. Instead of relying solely on the Prompt correlator, the invention utilizes the sum of the powers of all the correlators of a channel to determine the acquisition or tracking of the signal. This approach improves signal acquisition speed, resulting in a reduced Time-To-First-Fix (TTFF) and enhances the acquisition and tracking sensitivity of the receiver.

Another significant patent is for "Methods and systems for acquisition, reacquisition, and tracking of weak navigational signals." This invention offers systems and methods for achieving long coherent integration in a navigational receiver, thereby improving the sensitivity of the receiver. It enables the receiver to acquire, reacquire, and track signals under very weak signal conditions. The phase compensation is computed based on estimated Doppler frequency and its rate of change, which is crucial for compensating samples of the input signal for changes in phase due to the Doppler frequency.

Career Highlights

Throughout his career, Jian Cheng has worked with prominent companies such as SiRF Technology Holdings, Inc. and CSR Technology Holdings Inc. His experience in these organizations has contributed to his expertise in signal processing and navigation technologies.

Collaborations

Cheng has collaborated with notable individuals in his field, including Chi-Shin Wang and Zhike Jia. These collaborations have likely enriched his work and contributed to the advancements in his inventions.

Conclusion

Jian Cheng's innovative contributions to signal processing and navigation technology demonstrate his expertise and commitment to improving the performance of navigational systems. His patents reflect a deep understanding of the challenges in the field and offer practical solutions for enhancing signal acquisition and tracking.