Location History:
- Santa Clara, CA (US) (2006)
- Singapore, SG (2007 - 2013)
Company Filing History:
6 out of 1,476 
1 out of 3 
1 out of 4,709 
Years Active: 2006-2013
Title: Ying-Chang Liang: Innovator in Wireless Communication Technologies
Introduction
Ying-Chang Liang is a prominent inventor based in Singapore, known for his significant contributions to the field of wireless communication. With a total of eight patents to his name, Liang has developed innovative technologies that enhance data transmission and signal processing.
Latest Patents
Among his latest patents is a groundbreaking invention titled "Two-dimensional code spreading for interleaved FDMA system." This patent describes a transmitter that utilizes a first spreading unit to multiply multiple data symbols with a first spreading code sequence. It also includes a compression and repetition unit that compresses the output signals in the time domain and repeats the compressed signal multiple times. Additionally, a phase modulation unit is employed to multiply the compressed signal with a user-dependent phase, resulting in a data block consisting of several sub-blocks. The invention further details a second spreading unit that replicates the data block and produces a two-dimensionally spread signal for wireless transmission.
Another notable patent is the "Method for determining as to whether a received signal includes a data signal." This method involves determining values based on the cyclic auto-correlation of the received signal to ascertain whether it contains a data signal. The innovative approach enhances the reliability of data communication systems.
Career Highlights
Ying-Chang Liang has had a distinguished career, working with esteemed organizations such as the Agency for Science, Technology and Research and the National University of Singapore. His work in these institutions has allowed him to push the boundaries of research and development in wireless technologies.
Collaborations
Liang has collaborated with notable colleagues, including Yonghong Zeng and Francois Po Shin Chin. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Ying-Chang Liang's innovative work in wireless communication technologies has made a significant impact on the field. His patents reflect a deep understanding of complex systems and a commitment to enhancing data transmission methods. His contributions continue to influence the future of communication technology.