Search for dissertations about: "mattias andersson"

Showing result 1 - 5 of 29 swedish dissertations containing the words mattias andersson.

2. 1. Approximation Algorithms for Geometric Networks

   Author : Mattias Andersson; Data Vetenskap; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; control; systems; numerical analysis; Computer science; Geometric Networks; Computational Geometry; Approximation Algorithms; Datalogi; numerisk analys; system; kontroll; Systems engineering; computer technology; Data- och systemvetenskap;

   Abstract : The main contribution of this thesis is approximation algorithms for several computational geometry problems. The underlying structure for most of the problems studied is a geometric network. READ MORE

4. 2. Coding for the Wiretap Channel

   Author : Mattias Andersson; Mikael Skoglund; Michael Lentmaier; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

   Abstract : We consider code design for Wyner’s wiretap channel. Optimal coding schemes for this channel require an overall code that is capacity achieving for the main channel, partitioned into smaller subcodes, all of which are capacity achieving for the wiretapper’s channel. READ MORE

5. 3. Continuous-Time Delta-Sigma Modulators for Wireless Communication

   Author : Mattias Andersson; Institutionen för elektro- och informationsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; return-to-zero; A D converter; loop delay; delta-sigma; ADC; CMOS; STF; continuous-time; sigma; delta; filtering; CT; RZ;

   Abstract : The ever increasing data rates in wireless communication require analog to digital converters (ADCs) with greater requirements on speed and accuracy, while being power efficient to prolong battery life. This dissertation contains an introduction to the field and five papers that focus on the continuous-time (CT) Delta-Sigma modulator (DSM) as ADC. READ MORE

6. 4. Coding and Transmission Strategies for Secrecy

   Author : Mattias Andersson; Mikael Skoglund; Matthieu Bloch; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

   Abstract : In this thesis we consider several problems relating to information theoretic security. The wiretap channel is the simplest information theoretic setting which takes security into account, and in the first chapters of the thesis we design some practical coding schemes for this channel model. READ MORE

7. 5. Colour Calibration of Trichromatic Capturing Devices

   Author : Mattias Andersson; Olle Inganäs; Nir Tessler; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polymer; fullerene; field-effect transistor; solar cell; electrical transport; mobility; Physics; Fysik;

   Abstract : In a time where there is an increasing demand for easily accessible and up-to-date information, digital printing has become a link between traditional printed media and electronic media. Over the last years, applications such as variable data printing, personalised printing and print on demand have changed the way in which printed matter is produced and handled. READ MORE