Search for dissertations about: "Nonlinearity"
Showing result 1 - 5 of 170 swedish dissertations containing the word Nonlinearity.
-
1. Nonlinearity in Broadband Wireless Communication Systems
Abstract : In the implementation of a digital communication system, there often exist imperfections that are not considered in the primary design. One such imperfection is the nonlinearity of the front-end devices. READ MORE
-
2. Nonlinearity mitigation in phase-sensitively amplified optical transmission links
Abstract : The fundamental limitations in fiber-optic communication are caused by optical amplifier noise and the nonlinear response of the optical fibers. The quantum-limited noise figure of erbium-doped fiber amplifier (EDFA) or any phase-insensitive amplifier is 3 dB. READ MORE
-
3. On Boolean Functions in Symmetric-Key Ciphers
Abstract : This thesis discusses new results on the design and the existence of cryptographically strong Boolean functions used in the design of stream and block ciphers. By interlinking theoretical results and computer search some open problems have been solved, that is, we have shown the existence of previously unknown classes of functions. READ MORE
-
4. Evaluation and Compensation of Nonlinear Distortion in Multicarrier Communication Systems
Abstract : In modern wireless communication systems with increasing data transfer rateand mobility, designing efficient transceivers is a key issue. Among differentchallenges, nonlinearity of high power amplifiers is a problem that has to beovercome by means of adding extra hardware or using more efficient signalprocessing algorithms. READ MORE
-
5. Nonlinear Propagation of Optical Pulses and Beams
Abstract : The propagation of optical beams and pulses under the influence of nonlinear effects is characterized by a rich variety of phenomena and many potentially important applications. We analyse two main topics in this context: nonlinear beam propagation, and nonlinear pulse propagation in optical fibers. READ MORE