Qidi Li

Title: Innovations by Qidi Li: Advancements in Angular Domain Channel Estimation

Introduction

Qidi Li is a notable inventor based in Chengdu, China. He has made significant contributions to the field of channel estimation, particularly through his innovative methods that enhance data transmission efficiency. His work is characterized by a focus on improving resolution and reducing errors in communication systems.

Latest Patents

Qidi Li holds a patent for an "Angular domain channel estimation method based on matrix reconstruction for symmetrical nonuniform array." This method combines a two-stage channel estimation and channel equalization scheme based on a Symmetrical Nonuniform Linear Array (SNLA) model. In the first stage, a matrix reconstruction method is employed to estimate the angle of arrival (AOA) of a path. Compared to traditional channel estimation methods based on Uniform Linear Arrays (ULA), this matrix reconstruction approach achieves a higher resolution ratio. In the second stage, a Least Squares (LS) method is utilized to obtain the path gain. The angular domain channel estimation method significantly reduces the mean square error (MSE) of channel estimation, the bit error rate (BER) of data transmission, and the complexity associated with traditional schemes. Simulation results indicate that this innovative method can achieve lower MSE and BER compared to conventional techniques.

Career Highlights

Qidi Li is affiliated with Southwest Jiaotong University, where he continues to engage in research and development in the field of communications. His academic background and ongoing projects reflect his commitment to advancing technology in channel estimation.

Collaborations

Qidi Li has collaborated with colleagues such as Yanyan Wang and Li Li, contributing to the development of innovative solutions in his field. Their joint efforts have further enhanced the impact of their research.

Conclusion

Qidi Li's contributions to angular domain channel estimation represent a significant advancement in communication technology. His innovative methods not only improve the efficiency of data transmission but also set a new standard for future research in this area.