Nejib Ammar

Title: Innovations of Nejib Ammar

Introduction

Nejib Ammar is a notable inventor based in Vernon Hills, IL (US). He has made significant contributions to the field of cryptography and mobile communication systems. With a total of 2 patents, his work reflects a commitment to advancing technology and improving system efficiencies.

Latest Patents

Nejib Ammar's latest patents include a "Method and apparatus for asymmetric cryptosystem based on quasi-cyclic moderate density parity-check codes over GF(q)." This invention generalizes the framework of Quasi-Cyclic Moderate-Density Parity-Check (QC-MDPC) Code-Based cryptography from the binary domain to an arbitrary size of Galois Field. It provides an apparatus for implementing the cryptosystem with simplified computational complexity for key generation, encryption, and decryption components, along with reduced sizes of public and private security keys.

Another significant patent is "Adaptive low complexity channel estimation for mobile OFDM systems." This invention presents an adaptive low complexity minimum mean square error (MMSE) channel estimator for OFDM systems operating over mobile channels. The complexity of the estimator is reduced by partitioning sub-carriers into optimized windows, considering channel model mismatch error. The patent outlines three types of adaptive windowed MMSE estimators that enhance the performance of mobile communication systems.

Career Highlights

Nejib Ammar is currently employed at Zenith Electronics Corporation, where he continues to innovate and contribute to technological advancements. His work at Zenith has allowed him to apply his expertise in cryptography and communication systems to real-world applications.

Collaborations

Nejib has collaborated with notable coworkers, including Ning Sun and Wayne E Bretl. These collaborations have fostered an environment of innovation and shared knowledge, further enhancing the impact of his inventions.

Conclusion

Nejib Ammar's contributions to the fields of cryptography and mobile communication systems demonstrate his dedication to innovation. His patents reflect a deep understanding of complex systems and a commitment to improving technology for future applications.