Search for dissertations about: "symbol error rate"

Showing result 21 - 25 of 46 swedish dissertations containing the words symbol error rate.

2. 21. Design and analysis of estimators for multicarrier modulation and ultrasonic imaging

   Author : Magnus Sandell; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signal Processing;

   Abstract : This thesis deals with two areas: multicarrier modulation and ultrasonic imaging. Although different in application, these fields have a lot in common. For instance, synchronization and channel estimation in communication systems correspond to time-delay estimation and system identification in ultrasonic imaging. READ MORE

4. 22. Study of Six-Port Modulators and Demodulators for High-Speed Data Communications

   Author : Joakim Östh; Shaofang Gong; Magnus Karlsson; Robert Weigel; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : There is an increasing demand for high-speed wireless data communications to support consumers’ need for, among other things, real time streaming of high definition video and fast file transfers. One radio architecture that has a potential to meet the increasing demand for high-speed data communications is a radio technique based on the six-port architecture. READ MORE

5. 23. Towards the Limits of Nonlinearity Compensation for Fiber-Optic Channels

   Author : Naga Vishnukanth Irukulapati; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Viterbi algorithm; fiber-optic channel; stochastic digital backpropagation; performance limits; factor graphs; near-MAP detector; Digital backpropagation; nonlinear compensation; mutual information;

   Abstract : The performance of long-haul coherent optical systems is fundamentally limited by fiber nonlinearity and its interplay with chromatic dispersion and noise. Due to nonlinearity, the signal propagating through the fiber interacts with itself and with the noise generated from the inline amplifiers. READ MORE

6. 24. Design of multi-standard baseband processors

   Author : Anders Nilsson; Viktor Öwall; Linköpings universitet; []
   Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : Efficient programmable baseband processors are important in order to enable true multi-standard radio platforms and software defined radio systems. The ever changing wireless network industry also requires flexible and versatile baseband processors to be able to adapt quickly to new and updated standards. READ MORE

7. 25. Constellation Shaping in Optical Communication Systems

   Author : Ali Mirani; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coherent receiver; constellation shaping; multidimensional modulation format; optical communications; probabilistic shaping; geometric shaping;

   Abstract : Exploiting the full-dimensional capacity of coherent optical communication systems is needed to overcome the increasing bandwidth demands of the future Internet. To achieve capacity, both coding and shaping gains are required, and they are, in principle, independent. READ MORE