Shehadah, Nazmi M.2022-08-172022-08-17197013848784https://hdl.handle.net/10657/10763The performance of an EM demodulator can be defined in terms of the threshold phenomenon which determines the minimum acceptable input SNR for the system. The presence of high-amplitude noise impulses ('click' noise) in the demodulator output is a primary factor contributing to the occurrence of threshold in an EM system. Certain distinguishing characteristics of click noise provide a basis for practical techniques which can be implemented at the output of an EM demodulator to improve its threshold performance. A threshold extension device has been developed which operates on the principle of click detection and elimination. Previous work in the area of EM demodulator improvement has concentrated on the design of specialized demodulation schemes which provide optimum performance for one set of channel parameters. However, EM systems use several channels having different characteristics in terms of required channel bandwidth, maximum frequency deviation, and range of modulation frequencies. The click-noise eliminator offers an advantage in flexibility since it is not a demodulator but rather a device which can be implemented at the output of any EM discriminator to provide improved system performance.application/pdfenThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.Thesisreformatted digital