Location History:
- Belleville, NJ (US) (2006)
- Tyngsborough, MA (US) (2011)
Company Filing History:
2 out of 379 
1 out of 832,912 Years Active: 2006-2011
Title: The Innovative Contributions of Hangjun Chen
Introduction
Hangjun Chen, an accomplished inventor based in Tyngsborough, MA, has made significant contributions to the field of signal processing and communications. With a portfolio that includes three patents, Chen is recognized for his innovative approaches to overcoming challenges in orthogonal frequency division multiplexing (OFDM) and encoding methodologies.
Latest Patents
One of Chen's notable patents is titled "Clipping distortion canceller for OFDM signals." This invention provides methods and apparatus designed to reduce clipping noise from OFDM signals. The process involves transforming a received OFDM signal into the frequency domain, recovering data symbols while accounting for clipping noise, estimating the noise, and ultimately subtracting it from the transformed signal to enhance clarity and performance.
Another significant innovation is his patent describing a "Method and/or system for space-time encoding and/or decoding." This invention utilizes time-variant linear transformations for encoding and decoding, incorporating turbo coding techniques. The unique aspect of this method lies in the unitary nature of the transformations applied, which can enhance efficiency in data transmission.
Career Highlights
Throughout his career, Hangjun Chen has collaborated with prestigious institutions such as the New Jersey Institute of Technology. His work has contributed greatly to advancements in communications technology, demonstrating his commitment to pushing the boundaries of current methodologies.
Collaborations
Chen has had the opportunity to work alongside Alexander Mircea Haimovich, a noted professional in the communications field. Their collaboration has likely spurred innovative ideas and solutions that advance the understanding and application of signal processing.
Conclusion
In conclusion, Hangjun Chen's patents reflect his dedication to innovation and improvement in communication technologies. His expertise in addressing the challenges presented by OFDM signals and encoding processes showcases his position as a valuable inventor in the industry. As his work continues to influence the field, the impact of his inventions will likely be felt for years to come.