Company Filing History:
Years Active: 2015
Title: Innovations of Ning Sun in Mobile OFDM Systems
Introduction
Ning Sun is an accomplished inventor based in Vernon Hills, IL (US). She has made significant contributions to the field of mobile communication systems, particularly through her innovative patent related to adaptive low complexity channel estimation for mobile OFDM systems.
Latest Patents
Ning Sun holds a patent titled "Adaptive low complexity channel estimation for mobile OFDM systems." This invention focuses on an adaptive low complexity minimum mean square error (MMSE) channel estimator designed for OFDM systems operating over mobile channels. The complexity of the estimator is reduced by partitioning sub-carriers into optimized windows, which take into account channel model mismatch error (MME). The patent describes three types of adaptive windowed MMSE (W-MMSE) estimators. The first type utilizes a simplified delay profile as a channel reference model, with an optimum window size that adapts to the estimated signal-to-noise ratio (SNR). The second type considers a group of candidate channel reference models, where the receiver estimates and selects the current reference model from the group, adapting the optimum window size based on the estimated SNR and selected channel model. The third type involves finely estimating current channel statistics and iteratively optimizing the window size at the receiver. The first two adaptive W-MMSE estimators are tolerant to channel model mismatch error, while the third captures channel variations for real-time estimation.
Career Highlights
Ning Sun is currently employed at Zenith Electronics Corporation, where she continues to work on advancements in mobile communication technologies. Her innovative approach to channel estimation has positioned her as a key contributor in her field.
Collaborations
Ning has collaborated with notable colleagues, including Wayne E Bretl and Nejib Ammar, who have contributed to her research and development efforts.
Conclusion
Ning Sun's work in adaptive low complexity channel estimation has made a significant impact on mobile OFDM systems. Her innovative solutions continue to enhance the efficiency and reliability of mobile communication technologies.