Jae-Choong Han

Title: Jae-Choong Han and Signal Estimation for MIMO-OFDM Communications.

Introduction

Jae-Choong Han is an inventor associated with Suwon, South Korea. His patent work addresses signal estimation in wireless communication systems, particularly systems that combine multiple-input and multiple-output (MIMO) technology with orthogonal frequency division multiplexing (OFDM).

Latest Patents

Han is associated with 1 patent: “Method and Apparatus for Estimating a Signal Sequence in a MIMO-OFDM Mobile Communication System.” The invention describes an expectation-maximization-based iterative method for estimating transmitted quadrature amplitude modulation (QAM) signals and space-time block-coded signals. It uses pilot sub-carriers to generate an initial estimate, normalizes received signals channel by channel using the orthogonality of received OFDM signals, and iteratively refines the estimate. When the estimate converges after the prescribed iterations, the system designates it as the final sequence estimate.

Career Highlights

The information provided associates Han with Samsung Electronics Co., Ltd. and Seoul National University. His patent reflects work on improving signal-sequence estimation for mobile communication systems.

Collaborations

Jong-Ho Lee and Chan-Soo Hwang are identified as Han’s coworkers. The supplied information does not specify their roles in the patent or their particular contributions.

Conclusion

Jae-Choong Han’s documented invention focuses on iterative signal estimation for MIMO-OFDM communications, a technical approach intended to support the recovery of transmitted signals in mobile systems.