Yihong Qi

Title: Yihong Qi: Innovator in Communication Technology

Introduction

Yihong Qi is a prominent inventor based in Schaumburg, IL (US). He has made significant contributions to the field of communication technology, particularly in the area of channel estimation for modulation systems. With a total of 4 patents to his name, Qi's work has advanced the efficiency and performance of communication protocols.

Latest Patents

One of Yihong Qi's latest patents is titled "Optimal blind channel estimation for DQPSK demodulation." This invention describes an apparatus and method that provide an optimal blind channel estimation approach for a differential quadrature phase shift keying (DQPSK) modulation communication receiving system. The technique leverages the characteristics of DQPSK constellations, focusing on estimates of relative channel phase distortion, which are sufficient for DQPSK demodulation. This approach is designed to be low in complexity while improving demodulation performance, making it particularly useful in existing DQPSK-based communications protocols that lack sufficient reference symbols for channel estimation.

Another notable patent by Qi is "Blind channel estimation for PSK and D-PSK modulated multicarrier communication systems." This invention outlines an efficient blind channel estimation approach for PSK and DPSK modulated multicarrier communication systems. The method requires that the channel phase difference between any two adjacent carriers is smaller than one half of the minimum phase difference between two symbols of the PSK or DPSK constellation. This low-complexity deterministic approach is robust and effective, especially for time-varying channels with low additive white Gaussian noise (AWGN).

Career Highlights

Yihong Qi is currently employed at Qualcomm Incorporated, a leading company in wireless technology and communication solutions. His work at Qualcomm has allowed him to focus on innovative solutions that enhance communication systems.

Collaborations

Throughout his career, Qi has collaborated with notable colleagues, including Azzedine Touzni and Feng Huang. These collaborations have contributed to the development of advanced technologies in the field of communication.

Conclusion

Yihong Qi's contributions to communication technology through his patents and work at Qualcomm have significantly impacted the industry. His innovative approaches to channel estimation continue to enhance the performance of communication systems.