This inventor holds 7 USPTO granted patents and 4 EPO patents. Top assignees: China Academy of Telecommunications Technology, Shanghai Ultimate Power Communications Technology Co., Ltd., Datang Mobile Communications Equipment Co., Ltd.. Active years: 2009-2014.
Location History:
- Qingpu District, CN (2010)
- Beijing, CN (2009 - 2014)
- Shanghai, CN (2011 - 2014)
Company Filing History:
3 out of 633 
3 out of 23 
1 out of 743 Years Active: 2009-2014
Title: Changguo Sun: Pioneering Innovations in Antenna Calibration and Beamforming
Introduction
Changguo Sun is a distinguished inventor based in Beijing, China, who holds 7 patents. His innovations significantly contribute to the fields of telecommunications and antenna technology, showcasing his expertise and commitment to advancing these industries.
Latest Patents
Among Changguo Sun's notable patents are two groundbreaking inventions. The first is a "Method and Device for Antenna Calibration." This invention provides a comprehensive approach to antenna calibration. It includes steps to obtain an updated calibration period, calculate calibration sequences, and calibrate antennas accordingly. The technology allows for real-time monitoring of various radio channels and reflects calibration precision through reported error parameters. Additionally, it enables adjustments to the calibration period based on real-time data, ensuring efficient antenna calibration.
The second patent, "Method and Apparatus for Downlink Beam Forming in TD-CDMA System," addresses the challenges in downlink beamforming. This innovation involves acquiring spatial covariance matrices to determine beam-forming weight coefficients for downlink user signals. Implementing this method enhances the performance of TD-CDMA systems, making them more effective in handling interference.
Career Highlights
Changguo Sun has worked with reputable organizations such as the China Academy of Telecommunications Technology and Shanghai Ultimate Power Communications Technology Co., Ltd. His experience in these esteemed companies has undoubtedly shaped his innovative approach and contributed to his successful patent portfolio.
Collaborations
Throughout his career, Changguo has collaborated with notable colleagues, including Yingmin Wang and Guiliang Yang. These partnerships have likely fostered knowledge sharing and contributed to the development of innovative solutions within their respective fields.
Conclusion
Changguo Sun stands out as a prominent inventor in the realm of telecommunications, with his patents reflecting a strong dedication to innovation and technological advancement. His work on antenna calibration and downlink beamforming not only enhances system performance but also paves the way for future developments in the industry.