Shehadah, Nazmi M.2022-08-172022-08-17197113846270https://hdl.handle.net/10657/10810The effects of bandlimiting on the detection of amplitude shift keying (ASK) signals disturbed by additive Gaussian noise have been analyzed using the average threshold method and the average probability density function method, A sample detector is used. For a small signal-to-noise (S/N) ratio, both methods give almost the same probability of bit error for noncoherent detection, but for a large S/N, the average probability density function method gives a smaller probability of error than does the average threshold method. For coherent detection only the average probability density function method has been used. For the same energy of the signal, the results show that the probability of bit error using a sampler detector is optimum for BT = 0.6 for the noncoherent detection and for BT = 0.7 for the coherent detection of ASK signals. For BT £ 1.0, the sampling time t = 0.5T is optimum for the coherent and noncoherent detection. For BT > 1.0, the optimum sampling time t is variable as discussed in Chapter VI.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